This document defines terms and testing standards related to earthworks and slope protection materials. It discusses soil classification systems, definitions of fill materials like borrow fill and base course materials. It also summarizes standard tests for properties like liquid limit, plastic limit and plasticity index. Finally, it describes various slope protection technologies like riprap, gabion systems, geosynthetics, geotextiles and geocomposites.
This document discusses various topics related to wood used in architecture, including:
- Classification of wood into softwoods and hardwoods. The structure of wood includes the sapwood and heartwood.
- Properties of wood such as hardness, flexibility, strength and durability. Defects include decay, checks, shakes, knots, pitchpockets and wane.
- Methods of sawing wood including plainsawing and quartersawing. Plainsawing results in lumber cut tangent to the growth rings, while quartersawing cuts perpendicular to the growth rings.
Concrete is a versatile building material made by mixing portland cement, water, aggregates like sand and gravel, and sometimes admixtures. It can be easily formed and customized for different uses. Freshly mixed concrete must be workable, meaning it can be easily transported, placed, compacted, and finished without segregating. Workability depends on factors like water content, mix design, and temperature.
This document provides information on building technology related to mortars, plasters, and unit masonry. It defines mortars and plasters, and describes different types of cement mortars, plasters, and their uses. It also defines key terms related to unit masonry such as bed, course, and wythe/tier.
The document discusses building technology related to waterproofing, roofing, and joint sealants. It covers various methods of waterproofing concrete including using dense concrete mixes, coatings, integral compounds, and membrane barriers. It also describes different types of preformed roofing materials like sheet metal, plastic, tiles, and shingles. Finally, it mentions bituminous cement and silicone sealants as examples of joint sealants.
Timber can be used as a structural material for construction. It is wood that has been processed after felling trees and before use in construction. Timber is used in housing, commercial buildings, and for interior fittings. There are two main types - alternative timbers which are remanufactured and conventional woods. Timber provides advantages like flexibility, lower costs, and sustainability compared to other materials like steel. However, it is susceptible to decay if exposed to moisture and requires additional design considerations.
The document discusses different types and uses of concrete. It describes three ways concrete can be classified: by binding material (cement or lime concrete), design (plain, reinforced, or pre-stressed concrete), and purpose (vacuum, air entrained, or light weight concrete). For each type, the key ingredients and common uses are provided. The document also covers mix design ratios, water-cement ratios, slump and workability tests, and the compaction factor test for evaluating concrete workability.
Flooring materials are selected based on factors like cost, appearance, durability, etc. Tile is a common flooring material made from stone or other hard materials. For tile flooring, a sub-floor provides support, tiles are set in mortar and grout is applied between tiles to strengthen the bond and finish. Proper slope, spacing, curing and installation techniques ensure durable and clean tile flooring.
This document discusses various topics related to wood used in architecture, including:
- Classification of wood into softwoods and hardwoods. The structure of wood includes the sapwood and heartwood.
- Properties of wood such as hardness, flexibility, strength and durability. Defects include decay, checks, shakes, knots, pitchpockets and wane.
- Methods of sawing wood including plainsawing and quartersawing. Plainsawing results in lumber cut tangent to the growth rings, while quartersawing cuts perpendicular to the growth rings.
Concrete is a versatile building material made by mixing portland cement, water, aggregates like sand and gravel, and sometimes admixtures. It can be easily formed and customized for different uses. Freshly mixed concrete must be workable, meaning it can be easily transported, placed, compacted, and finished without segregating. Workability depends on factors like water content, mix design, and temperature.
This document provides information on building technology related to mortars, plasters, and unit masonry. It defines mortars and plasters, and describes different types of cement mortars, plasters, and their uses. It also defines key terms related to unit masonry such as bed, course, and wythe/tier.
The document discusses building technology related to waterproofing, roofing, and joint sealants. It covers various methods of waterproofing concrete including using dense concrete mixes, coatings, integral compounds, and membrane barriers. It also describes different types of preformed roofing materials like sheet metal, plastic, tiles, and shingles. Finally, it mentions bituminous cement and silicone sealants as examples of joint sealants.
Timber can be used as a structural material for construction. It is wood that has been processed after felling trees and before use in construction. Timber is used in housing, commercial buildings, and for interior fittings. There are two main types - alternative timbers which are remanufactured and conventional woods. Timber provides advantages like flexibility, lower costs, and sustainability compared to other materials like steel. However, it is susceptible to decay if exposed to moisture and requires additional design considerations.
The document discusses different types and uses of concrete. It describes three ways concrete can be classified: by binding material (cement or lime concrete), design (plain, reinforced, or pre-stressed concrete), and purpose (vacuum, air entrained, or light weight concrete). For each type, the key ingredients and common uses are provided. The document also covers mix design ratios, water-cement ratios, slump and workability tests, and the compaction factor test for evaluating concrete workability.
Flooring materials are selected based on factors like cost, appearance, durability, etc. Tile is a common flooring material made from stone or other hard materials. For tile flooring, a sub-floor provides support, tiles are set in mortar and grout is applied between tiles to strengthen the bond and finish. Proper slope, spacing, curing and installation techniques ensure durable and clean tile flooring.
This document provides details on the construction of an apartment block using an Industrialized Building System (IBS). It discusses the use of precast concrete and prefabricated timber components. These include precast foundations, columns, beams, floors, walls and stairs. Timber trusses are used for the roof structure. Connection methods between components like columns, beams, walls and slabs are described. The production process and installation procedures are outlined in 13 steps. Drawings of the building plans and IBS score are also included.
This document discusses various surface finishing materials used in construction including stone, plaster, ceramic tiles, facing tiles, ACP sheets, wood, and glass. It then provides details on properties of different types of exterior cladding such as timber cladding, stone cladding, weatherboard cladding, vinyl cladding, metal cladding, concrete cladding, and stucco. The document also discusses types of exterior paints, properties of ceramic tiles, brick tiles, ACP, wood, fiber reinforced plastics, strength and aesthetic properties of glass.
The document discusses rubber, including its properties, types (natural and synthetic), production processes, and applications. It describes how natural rubber is obtained from rubber trees by tapping latex and coagulating it. It also explains various synthetic rubbers like SBR, butyl, EPDM, and nitrile. Key applications mentioned include rubber flooring, adhesives, expansion joints, and bearing pads.
Veneer, laminate, cement fiber board, and mineral fiber board are common construction and material options. Veneer is thin slices of wood glued to panels, available in raw, paper, or phenolic backed varieties. Laminates are bonded paper layers creating durable, decorative sheets. Cement fiber board uses cement, fibers, and cellulose for durability and moisture resistance. Mineral fiber board uses mineral wool and other materials for strength and noise reduction. Each has advantages for different applications like furniture, walls, or ceilings depending on thickness and properties.
13 construction material from the futureMasoud Fayeq
The document summarizes 13 emerging construction materials, including translucent concrete that uses glass fibers to allow light transmission, sensiTiles with embedded fiber optics that twinkle as people walk on them, and electrified wood that incorporates wiring to power devices. It also discusses flexible honeycomb structures, paper-based countertops, self-repairing cement with microcapsules that seal cracks, strong yet lightweight carbon fiber, and bendable concrete reinforced with fibers.
Brick masonry uses bricks and mortar as primary building materials. There are traditional and modular bricks that vary in size, and mortars can be cement, lime, or cement-lime. Good brick earth for making bricks contains approximately 20-30% alumina, 50-60% silica, less than 5% lime, and 5-6% iron oxide. There are different bonds used like stretcher, header, English, and Flemish bonds. Walls can be load bearing like solid masonry or cavity walls, or non-load bearing like partition walls. Reinforcement, lintels, and arches are also discussed.
Asbestos is a naturally occurring mineral found in rock formations. There are two main varieties: chrysotile and amphibole. Chrysotile is the only type still in production. Asbestos is used to make asbestos cement sheets and pipes, as well as products like floor tiles and insulation. Cork, felt, mica, adhesives, bakelite, and china clay are other natural and synthetic materials used in construction for purposes like insulation, waterproofing, and binding materials together. Bricks, fire resistant glass, concrete, plaster, and gypsum are some of the most common fire resistant building materials used due to their heat resistance and durability.
This document defines roof and roofing materials. It discusses traditional Philippine roof designs like "dos aguas" and "quatro aguas". It then describes different types of roofing materials used in the Philippines like fiber, wood, slate tiles, metal, plastics, and reinforced concrete. For each material, it provides details on characteristics, common types, advantages, disadvantages and maintenance needs. The goal is to educate on roof designs and choices of roofing materials for Philippine buildings.
The document discusses flooring materials and their properties. It provides information on various types of flooring materials including ceramic tiles, marble, terrazzo tiles, and vitrified tiles. For each material, it describes the manufacturing process, characteristics, advantages, disadvantages, common uses, and costs. Ceramic tiles are made from clay, sand and other natural materials that are fired at high temperatures. Marble is a natural stone that comes in various colors and grades. Terrazzo involves pouring a composite material that is ground and polished smooth. Vitrified tiles are made through a process that makes them non-porous and highly durable.
This document discusses different types of light weight concrete, including light weight aggregate concrete, aerated concrete, and no-fines concrete. Light weight concrete has lower density than normal concrete, ranging from 300-1850 kg/m3 compared to 2200-2600 kg/m3. It has advantages like reduced dead load, improved workability, and applications in pre-stressed concrete and high-rise buildings. The main methods to produce light weight concrete are using porous aggregates, incorporating air bubbles, or omitting fine aggregates. Properties depend on the type and density, with compressive strengths ranging from 0.3-40 MPa.
Fabric structures are constructed from engineered fibers that provide aesthetic, free-form building designs. They are custom-designed to meet structural and weather requirements. The selection of materials, design, engineering, fabrication, and installation all work together to ensure a sound structure. Common fabric materials include polyesters, vinyl-coated polyester, fiberglass, PTFE-coated fiberglass, woven PTFE, and ETFE foil. Properties of these materials like strength, weather-resistance, temperature tolerance, and recyclability determine their suitability for different applications.
Plastic is a synthetic material made from organic polymers that can be molded while soft and set into a rigid form. It is classified based on its behavior with heat (thermoplastics soften with heat, thermosetting plastics harden permanently), structure (homogeneous or heterogeneous), and properties (rigid, semi-rigid, soft, elastic). Common thermoplastics include polyethylene, PVC, and nylon, while epoxies, phenolics, and polyesters are thermosetting plastics. Plastics are composed of polymers, carbon, oxygen, and other elements, and may include additives like fillers, pigments, plasticizers, and catalysts to modify their properties.
Ferrocement is a type of thin reinforced concrete made of cement mortar reinforced with closely spaced wire mesh. It has a higher ratio of steel to cement than conventional concrete. Ferrocement was invented in France in the 1840s and provides high tensile strength, durability, and versatility due to its composition and thin walls. It can be cast into various shapes using different techniques like hand plastering, semi-mechanized processes, centrifuging, or guniting. Ferrocement has applications in water tanks, boats, roofs, and other prefabricated structures due to its properties and ease of production.
Laminated boards are made from thin sheets of wood or veneers glued together with adjacent plies crossed at right angles for strength. They have a protective plastic layer on one or both sides, making them resistant to weather, moisture and impacts. Common types include plywood with ABS or FRP laminate. They are used for floors, walls, furniture and other applications requiring durable, weatherproof materials. Laminated composites use a core of wood fibers or particles bonded with resin while plywood or veneers use a wood core.
The document discusses different types of ceiling and flooring materials used in interior design. It describes dropped ceilings, exposed ceilings, tightly attached ceilings, suspended ceilings, and other ceiling types. It also outlines various flooring options like hardwood, ceramic tiles, bamboo, laminate, vinyl and linoleum. Details are provided on the composition, advantages, and applications of each material type.
The document discusses different types of concrete hollow blocks used in construction. It describes concrete hollow blocks as large rectangular bricks made of cast concrete containing Portland cement and aggregates. The document outlines five main types of concrete hollow blocks: hollow load-bearing blocks, solid load-bearing blocks, hollow non-load bearing blocks, concrete building tiles, and concrete bricks. It also discusses different block arrangements used in masonry structures and defines terms like stretcher, corner, double corner, bull nose, and jamb blocks.
This document provides details on various concrete surface finish techniques and materials. It discusses stucco/cement plaster finishes applied in scratch, brown, and finish coats. Other concrete finishes discussed include rubbed finish, brushed finish, tooled finish, sand-blasted finish, exposed aggregate finish, steel-troweled finish, and integral colored-cement finish. Granolithic and terrazzo floor finishes are also summarized. The document concludes with sections on tile finishes including cement tile, ceramic tile, and resilient floor finishes such as asphalt and vinyl tiles and sheets.
قازانج و خراپییەکانی کۆنکریت
Concrete is a composite material composed of coarse aggregate bonded together with a fluid cement that hardens over time. Most concretes used are lime-based concretes such as Portland cement concrete or concretes made with other hydraulic cements, such as ciment fondu. However, asphalt concrete, which is frequently used for road surfaces, is also a type of concrete, where the cement material is bitumen, and polymer concretes are sometimes used where the cementing material is a polymer.
When aggregate is mixed together with dry Portland cement and water, the mixture forms a fluid mass that is easily molded into shape. The cement reacts chemically with the water and other ingredients to form a hard matrix that binds the materials together into a durable stone-like material that has many uses.[2] Often, additives (such as pozzolans or superplasticizers) are included in the mixture to improve the physical properties of the wet mix or the finished material. Most concrete is poured with reinforcing materials (such as rebar) embedded to provide tensile strength, yielding reinforced concrete.
Famous concrete structures include the Hoover Dam, the Panama Canal, and the Roman Pantheon. The earliest large-scale users of concrete technology were the ancient Romans, and concrete was widely used in the Roman Empire. The Colosseum in Rome was built largely of concrete, and the concrete dome of the Pantheon is the world's largest unreinforced concrete dome.[3] Today, large concrete structures (for example, dams and multi-storey car parks) are usually made with reinforced concrete.
After the Roman Empire collapsed, use of concrete became rare until the technology was redeveloped in the mid-18th century. Today, concrete is the most widely used man-made material (measured by tonnage).
Good brick earth is composed of 20-30% alumina, 50-60% silica, and small amounts of lime, iron oxide, and magnesia. Alumina provides plasticity while silica prevents cracking. Lime reduces shrinkage and iron oxide provides color. Bricks are classified as sundried or burnt. Burnt bricks are further divided based on quality, with first class being highest quality. Good bricks are uniformly shaped, hard, low absorbing, and have a high crushing strength. Standard tests evaluate properties like absorption, strength, hardness, shape, and soundness.
Soil Stabilization, Soil Exploration, Foundation in expansive Soil.pdfabhishekgupta557534
The document discusses soil stabilization and provides methods to increase the strength and durability of soil. It describes mechanical methods like compaction and chemical methods like using calcium chloride, sodium silicate, bitumen, cement, and lime to stabilize different soil types. Foundation design for expansive soils is also covered, identifying tests to determine swelling potential and guidelines like providing impervious surfaces and drainage. Different soil exploration techniques like boreholes, probing, and sampling methods are outlined.
The document discusses geotextiles, which are permeable synthetic textile materials commonly made from polyester or polypropylene polymers. Geotextiles are used in construction applications such as road work, drainage, and coastal protection to increase soil stability, provide erosion control, and aid in drainage. They function by separating soils, filtering water, reinforcing soils, draining water, protecting soils from erosion, relieving stress, and acting as moisture barriers. Common materials used include polypropylene and polyester. Geotextiles are formed through weaving or non-woven processes like needle punching or heat bonding.
This document provides details on the construction of an apartment block using an Industrialized Building System (IBS). It discusses the use of precast concrete and prefabricated timber components. These include precast foundations, columns, beams, floors, walls and stairs. Timber trusses are used for the roof structure. Connection methods between components like columns, beams, walls and slabs are described. The production process and installation procedures are outlined in 13 steps. Drawings of the building plans and IBS score are also included.
This document discusses various surface finishing materials used in construction including stone, plaster, ceramic tiles, facing tiles, ACP sheets, wood, and glass. It then provides details on properties of different types of exterior cladding such as timber cladding, stone cladding, weatherboard cladding, vinyl cladding, metal cladding, concrete cladding, and stucco. The document also discusses types of exterior paints, properties of ceramic tiles, brick tiles, ACP, wood, fiber reinforced plastics, strength and aesthetic properties of glass.
The document discusses rubber, including its properties, types (natural and synthetic), production processes, and applications. It describes how natural rubber is obtained from rubber trees by tapping latex and coagulating it. It also explains various synthetic rubbers like SBR, butyl, EPDM, and nitrile. Key applications mentioned include rubber flooring, adhesives, expansion joints, and bearing pads.
Veneer, laminate, cement fiber board, and mineral fiber board are common construction and material options. Veneer is thin slices of wood glued to panels, available in raw, paper, or phenolic backed varieties. Laminates are bonded paper layers creating durable, decorative sheets. Cement fiber board uses cement, fibers, and cellulose for durability and moisture resistance. Mineral fiber board uses mineral wool and other materials for strength and noise reduction. Each has advantages for different applications like furniture, walls, or ceilings depending on thickness and properties.
13 construction material from the futureMasoud Fayeq
The document summarizes 13 emerging construction materials, including translucent concrete that uses glass fibers to allow light transmission, sensiTiles with embedded fiber optics that twinkle as people walk on them, and electrified wood that incorporates wiring to power devices. It also discusses flexible honeycomb structures, paper-based countertops, self-repairing cement with microcapsules that seal cracks, strong yet lightweight carbon fiber, and bendable concrete reinforced with fibers.
Brick masonry uses bricks and mortar as primary building materials. There are traditional and modular bricks that vary in size, and mortars can be cement, lime, or cement-lime. Good brick earth for making bricks contains approximately 20-30% alumina, 50-60% silica, less than 5% lime, and 5-6% iron oxide. There are different bonds used like stretcher, header, English, and Flemish bonds. Walls can be load bearing like solid masonry or cavity walls, or non-load bearing like partition walls. Reinforcement, lintels, and arches are also discussed.
Asbestos is a naturally occurring mineral found in rock formations. There are two main varieties: chrysotile and amphibole. Chrysotile is the only type still in production. Asbestos is used to make asbestos cement sheets and pipes, as well as products like floor tiles and insulation. Cork, felt, mica, adhesives, bakelite, and china clay are other natural and synthetic materials used in construction for purposes like insulation, waterproofing, and binding materials together. Bricks, fire resistant glass, concrete, plaster, and gypsum are some of the most common fire resistant building materials used due to their heat resistance and durability.
This document defines roof and roofing materials. It discusses traditional Philippine roof designs like "dos aguas" and "quatro aguas". It then describes different types of roofing materials used in the Philippines like fiber, wood, slate tiles, metal, plastics, and reinforced concrete. For each material, it provides details on characteristics, common types, advantages, disadvantages and maintenance needs. The goal is to educate on roof designs and choices of roofing materials for Philippine buildings.
The document discusses flooring materials and their properties. It provides information on various types of flooring materials including ceramic tiles, marble, terrazzo tiles, and vitrified tiles. For each material, it describes the manufacturing process, characteristics, advantages, disadvantages, common uses, and costs. Ceramic tiles are made from clay, sand and other natural materials that are fired at high temperatures. Marble is a natural stone that comes in various colors and grades. Terrazzo involves pouring a composite material that is ground and polished smooth. Vitrified tiles are made through a process that makes them non-porous and highly durable.
This document discusses different types of light weight concrete, including light weight aggregate concrete, aerated concrete, and no-fines concrete. Light weight concrete has lower density than normal concrete, ranging from 300-1850 kg/m3 compared to 2200-2600 kg/m3. It has advantages like reduced dead load, improved workability, and applications in pre-stressed concrete and high-rise buildings. The main methods to produce light weight concrete are using porous aggregates, incorporating air bubbles, or omitting fine aggregates. Properties depend on the type and density, with compressive strengths ranging from 0.3-40 MPa.
Fabric structures are constructed from engineered fibers that provide aesthetic, free-form building designs. They are custom-designed to meet structural and weather requirements. The selection of materials, design, engineering, fabrication, and installation all work together to ensure a sound structure. Common fabric materials include polyesters, vinyl-coated polyester, fiberglass, PTFE-coated fiberglass, woven PTFE, and ETFE foil. Properties of these materials like strength, weather-resistance, temperature tolerance, and recyclability determine their suitability for different applications.
Plastic is a synthetic material made from organic polymers that can be molded while soft and set into a rigid form. It is classified based on its behavior with heat (thermoplastics soften with heat, thermosetting plastics harden permanently), structure (homogeneous or heterogeneous), and properties (rigid, semi-rigid, soft, elastic). Common thermoplastics include polyethylene, PVC, and nylon, while epoxies, phenolics, and polyesters are thermosetting plastics. Plastics are composed of polymers, carbon, oxygen, and other elements, and may include additives like fillers, pigments, plasticizers, and catalysts to modify their properties.
Ferrocement is a type of thin reinforced concrete made of cement mortar reinforced with closely spaced wire mesh. It has a higher ratio of steel to cement than conventional concrete. Ferrocement was invented in France in the 1840s and provides high tensile strength, durability, and versatility due to its composition and thin walls. It can be cast into various shapes using different techniques like hand plastering, semi-mechanized processes, centrifuging, or guniting. Ferrocement has applications in water tanks, boats, roofs, and other prefabricated structures due to its properties and ease of production.
Laminated boards are made from thin sheets of wood or veneers glued together with adjacent plies crossed at right angles for strength. They have a protective plastic layer on one or both sides, making them resistant to weather, moisture and impacts. Common types include plywood with ABS or FRP laminate. They are used for floors, walls, furniture and other applications requiring durable, weatherproof materials. Laminated composites use a core of wood fibers or particles bonded with resin while plywood or veneers use a wood core.
The document discusses different types of ceiling and flooring materials used in interior design. It describes dropped ceilings, exposed ceilings, tightly attached ceilings, suspended ceilings, and other ceiling types. It also outlines various flooring options like hardwood, ceramic tiles, bamboo, laminate, vinyl and linoleum. Details are provided on the composition, advantages, and applications of each material type.
The document discusses different types of concrete hollow blocks used in construction. It describes concrete hollow blocks as large rectangular bricks made of cast concrete containing Portland cement and aggregates. The document outlines five main types of concrete hollow blocks: hollow load-bearing blocks, solid load-bearing blocks, hollow non-load bearing blocks, concrete building tiles, and concrete bricks. It also discusses different block arrangements used in masonry structures and defines terms like stretcher, corner, double corner, bull nose, and jamb blocks.
This document provides details on various concrete surface finish techniques and materials. It discusses stucco/cement plaster finishes applied in scratch, brown, and finish coats. Other concrete finishes discussed include rubbed finish, brushed finish, tooled finish, sand-blasted finish, exposed aggregate finish, steel-troweled finish, and integral colored-cement finish. Granolithic and terrazzo floor finishes are also summarized. The document concludes with sections on tile finishes including cement tile, ceramic tile, and resilient floor finishes such as asphalt and vinyl tiles and sheets.
قازانج و خراپییەکانی کۆنکریت
Concrete is a composite material composed of coarse aggregate bonded together with a fluid cement that hardens over time. Most concretes used are lime-based concretes such as Portland cement concrete or concretes made with other hydraulic cements, such as ciment fondu. However, asphalt concrete, which is frequently used for road surfaces, is also a type of concrete, where the cement material is bitumen, and polymer concretes are sometimes used where the cementing material is a polymer.
When aggregate is mixed together with dry Portland cement and water, the mixture forms a fluid mass that is easily molded into shape. The cement reacts chemically with the water and other ingredients to form a hard matrix that binds the materials together into a durable stone-like material that has many uses.[2] Often, additives (such as pozzolans or superplasticizers) are included in the mixture to improve the physical properties of the wet mix or the finished material. Most concrete is poured with reinforcing materials (such as rebar) embedded to provide tensile strength, yielding reinforced concrete.
Famous concrete structures include the Hoover Dam, the Panama Canal, and the Roman Pantheon. The earliest large-scale users of concrete technology were the ancient Romans, and concrete was widely used in the Roman Empire. The Colosseum in Rome was built largely of concrete, and the concrete dome of the Pantheon is the world's largest unreinforced concrete dome.[3] Today, large concrete structures (for example, dams and multi-storey car parks) are usually made with reinforced concrete.
After the Roman Empire collapsed, use of concrete became rare until the technology was redeveloped in the mid-18th century. Today, concrete is the most widely used man-made material (measured by tonnage).
Good brick earth is composed of 20-30% alumina, 50-60% silica, and small amounts of lime, iron oxide, and magnesia. Alumina provides plasticity while silica prevents cracking. Lime reduces shrinkage and iron oxide provides color. Bricks are classified as sundried or burnt. Burnt bricks are further divided based on quality, with first class being highest quality. Good bricks are uniformly shaped, hard, low absorbing, and have a high crushing strength. Standard tests evaluate properties like absorption, strength, hardness, shape, and soundness.
Soil Stabilization, Soil Exploration, Foundation in expansive Soil.pdfabhishekgupta557534
The document discusses soil stabilization and provides methods to increase the strength and durability of soil. It describes mechanical methods like compaction and chemical methods like using calcium chloride, sodium silicate, bitumen, cement, and lime to stabilize different soil types. Foundation design for expansive soils is also covered, identifying tests to determine swelling potential and guidelines like providing impervious surfaces and drainage. Different soil exploration techniques like boreholes, probing, and sampling methods are outlined.
The document discusses geotextiles, which are permeable synthetic textile materials commonly made from polyester or polypropylene polymers. Geotextiles are used in construction applications such as road work, drainage, and coastal protection to increase soil stability, provide erosion control, and aid in drainage. They function by separating soils, filtering water, reinforcing soils, draining water, protecting soils from erosion, relieving stress, and acting as moisture barriers. Common materials used include polypropylene and polyester. Geotextiles are formed through weaving or non-woven processes like needle punching or heat bonding.
This document discusses different types and functions of geotextiles. It describes three main types of geotextiles - woven, non-woven, and knitted. Woven geotextiles are manufactured using weaving techniques and are the most common. Non-woven geotextiles are bonded together using thermal, chemical or mechanical processes. The document outlines six main functions of geotextiles: separation, filtration, drainage, reinforcement, sealing and protection. It provides examples of how geotextiles are used in various civil engineering applications such as roads, railways, river banks, drainage and agriculture.
This document discusses the applications of geotextiles. It provides an introduction to geotextiles and discusses the materials used to make them such as polypropylene and polyester. It then describes the different types of geotextiles including woven, non-woven and knitted. The document outlines various applications of geotextiles such as in roadworks, river banks, drainage, reinforcement and separation. Finally, it discusses the advantages of geotextiles such as lighter weight but also disadvantages like installation challenges and flow rate limitations.
Woven and nonwoven geotextiles were first used in the 1950s and developed further in the late 1960s. Geotextiles, which are permeable textile materials, serve mechanical and hydraulic functions in civil engineering and environmental projects. They can provide separation, reinforcement, drainage, filtration, protection and erosion control depending on the application. Common types include woven, nonwoven, and knitted materials. Geotextiles are widely used to improve the performance of roads, railroads, drainage systems, slopes, landfills and walls by separating layers, reinforcing soils, and allowing fluid flow while preventing soil contamination.
soil stabilization using waste finber by RAJ S PYARArajkumar pyara
The document summarizes an experimental study on using waste plastic to stabilize soil. Key points:
- Tests were conducted on soil and plastic samples to determine properties like specific gravity, particle size distribution, Atterberg limits, and CBR value.
- Samples with varying percentages of mixed plastic (0-2%) were tested to find the optimum mix.
- Results showed that a 1.5% plastic mix achieved the highest CBR value of 5.98, improving strength over the natural soil CBR of 2.87.
- The study concluded that plastic can enhance soil stability up to a certain content but adding more plastic past the optimum amount has detrimental effects.
This document provides definitions and information about geosynthetics and fiber textiles. It defines geosynthetics as synthetic products used to stabilize terrain that are generally polymeric products used to solve civil engineering problems. It discusses the main types of geosynthetics including geotextiles, geogrids, geomembranes, geosynthetic clay liners, and more. It provides details on various geosynthetic materials, their constituents, applications, advantages, and disadvantages. It also discusses fiber textiles and their properties for making fabrics.
The document provides information about geo textiles, including:
- Their basic functions like separation, filtration, reinforcement, and drainage.
- Common types are woven and non-woven fabrics made of polypropylene or polyester.
- They are tested to standards like ASTM to ensure strength, permeability, and resistance to puncture, tearing, and UV degradation.
- Proper installation requires sewing machines, thread, and a three-person team to accurately place and stitch the geo textile materials.
This document discusses geotextiles, which are permeable textile materials used in geotechnical engineering and construction projects. It begins by defining geotextiles and their functions, which include separation, filtration, drainage, reinforcement, and sealing. It then describes the three main types of geotextiles - woven, non-woven, and knitted - and provides details on their manufacturing processes. The document also outlines the key properties tested in geotextiles and discusses their applications in areas like road works, railways, drainage, and agriculture. In summary, the document provides an overview of geotextile materials, manufacturing, testing and functions in civil engineering applications.
Geotextiles are permeable fabrics used with soil, rock, earth, and other geotechnical engineering related material as an interface. The document discusses the functions, classification, production process, forms, properties of fibers, and applications of geotextiles. Geotextiles are used for separation, filtration, drainage, reinforcement, protection, and erosion control in applications such as roads, railways, retaining walls, slopes, shorelines, and landfills. Common materials used include polypropylene, polyester, and natural fibers like jute. Geotextiles come in various forms like geomembranes, geogrids, geonets, and geocomposites.
This document discusses the functions and applications of geotextiles. It describes how geotextiles can be used for separation, reinforcement, filtration, drainage, and sealing. Some key applications mentioned include using geotextiles between dissimilar materials to prevent mixing, as reinforcement in weak soils, as filters to allow water flow while retaining soil, and as barriers to minimize water flow. The document also discusses a 35 year old test of a geotextile material's durability under extreme load and wet conditions in an unpaved road, finding it was still performing effectively after 35 years.
This document summarizes the various types of geosynthetics, their properties, and applications. Geosynthetics include geotextiles, geogrids, geonets, geomembranes, geocomposites, geocells, and geofoam. Each type has different characteristics making it suitable for various civil engineering purposes like soil reinforcement, separation, drainage, and containment. Common applications include roads, retaining walls, soil erosion control, and landfill construction. The document provides details on the material composition, manufacturing process, and functions of each geosynthetic type.
Geosynthetics in civil engineering (multifunctional uses of geosynthetics in ...Super Arc Consultant
This document discusses the use of geosynthetics in civil engineering. It begins with an introduction to geosynthetics, describing the different types including geotextiles, geogrids, geonets, geomembranes, geosynthetic clay liners, geopipes, geocomposites, and geocells. It then discusses the key functions of geosynthetics like separation, drainage, filtration, fluid barriers, reinforcement, and protection. The document provides examples of applications for geosynthetics in areas like pavements, retaining walls, drainage, erosion control, embankments, and reinforced foundations. It concludes by stating the benefits of geosynthetics like using local materials, employing un
124
مبادرة
#تواصل_تطوير
المحاضرة ال 124 من المبادرة مع
دكتور/ محمد الحسين
بعنوان
المركبات البوليمرية الجيوتقنية و تطبيقاتها في الهندسة المدنية
Geosynthetics in Civil Engineering (Multifunctional uses of geosynthetics in civil engineering)
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Components of highway pavement and materials used. Soil: Importance, Desirable properties, Index properties, Compaction, Strength evaluation tests. Aggregate: Functions, Desirable properties, Tests on road aggregates and quality control. Bituminous binders: Functions, Desirable properties, Tests on bitumen and quality control, Bitumen emulsion functions and classification, Modified bituminous binder functions and classification. Bituminous Mix: Desirable properties and requirement of design mix, general approach for design of bituminous mixes and introduction to Marshall Mix Design Method
The document discusses permeability and describes permeability as a property that measures how easily fluids can move through pore spaces in a material. It then discusses several methods to test permeability, including laboratory methods like the constant head and falling head permeability tests, and field methods like pumping tests. Finally, it outlines some common uses of permeability testing, such as determining suitability of soil for construction or wastewater treatment systems.
1. Geotextiles are permeable geosynthetics made solely of textiles that are used in geotechnical engineering and construction as an integral part of structures and systems. They serve separation, reinforcement, filtration, drainage, and sealing functions.
2. Geotextiles can be woven or nonwoven. Woven geotextiles have high strength in two directions and low elongation, while nonwoven geotextiles are thicker and have a felt-like structure formed through needle-punching, heat-bonding, resin-bonding, or a combination of methods.
3. Geotextiles are used widely in construction applications such as roads, railways, drainage systems
1. The document provides descriptions of 7 famous architectural structures in Chicago: Marina Towers, the Merchandise Mart, the Wrigley Building, Lake Point Tower, the Standard Oil Building (now AON Center), the House of Blues Hotel, and Soldier Field.
2. It also briefly mentions Frank Lloyd Wright's famous pattern design and the Willis Tower, formerly known as the Sears Tower, which was once the tallest building in the world.
3. The structures represent a variety of architectural styles and periods from Chicago's history.
The Building Envelope Subprogram aims to develop next-generation envelope technologies that reduce energy loss through walls, roofs, and foundations. The program focuses on low-cost insulation materials and air sealing systems for existing buildings. Active projects include an insulated vinyl siding with insulating panels, a composite board with high R-value insulation, and evaluations of air barrier technologies. Future opportunities include quick retrofit solutions, seamless envelope interfaces, and quantifying non-energy benefits of high performance envelopes.
The document discusses types of metals used in building technology, focusing on aluminum. It describes aluminum as a lightweight, corrosion-resistant metal that is used widely in construction for roofing, siding, doors, windows, and other fabricated forms. Various aluminum alloys and products are discussed, including sheet, foil, extrusions, and sandwich panels. Methods of working and joining aluminum are also covered, along with different surface finishes like anodized coatings.
The document discusses various architectural finishing systems including suspended light gauge ceiling systems, raised floor systems, light-gauge steel studs, and metal cladding. It provides details on the materials, applications, installation methods, and benefits of each system type for interior and exterior building construction finishes. Examples of commercial building projects utilizing metal cladding are also listed.
This document summarizes the key components and types of staircases. It defines a staircase as a set of steps that allows communication between levels. The main parts of a staircase are identified as the stringer, landings, tread, riser, nosing, and handrails. Proper angles and dimensions of treads and risers are provided. Finally, common types of staircases such as straight, spiral, curved, and L-shaped styles are briefly described.
This document discusses different types of walls and partitions. Walls are exterior building components that support loads and divide spaces, while partitions are interior. Both walls and partitions can be either load-bearing or non-load-bearing. There are four types: load-bearing walls, non-load-bearing walls, load-bearing partitions, and non-load-bearing partitions. The document uses a virtual construction example to illustrate each type and how their layout differs based on whether they are load-bearing or interior versus exterior.
This document discusses building materials, including their types, properties, compositions, and structures at different levels. It describes the responsibilities of material engineers in selecting appropriate materials based on compatibility, aesthetics, construction considerations, and economic factors. The basic physical, mechanical, durability and decorative properties of materials are examined. Material compositions include chemical and mineral compositions, which influence properties. Structures are analyzed at the macro, meso, and micro levels. A wide range of materials commonly used for construction are also outlined.
Structural steel is used to construct skeleton frames for structures ranging from one-story buildings to skyscrapers. Steel beams, girders, and columns are cut and assembled off-site into structural frames that can be quickly erected with precise connections. Various structural steel components and framing systems are described, including beams, columns, connections, open-web steel joists, metal decking, trusses, and rigid frames. Structural steel construction allows for relatively fast building of structural systems but requires fireproofing to achieve fire resistance.
1.1.2.A Principles and Elements of Design Applied to Architecture.pptbambang819101
Six components of design are discussed: line, color, form and shape, space, texture, and value. Different line types including vertical, horizontal, diagonal and curved lines are described. Color is said to have an immediate effect and warm and cool colors are mentioned. Form refers to 3D shape while shape is 2D. Space can be open or cramped. Texture can be smooth or rough. Value relates to lightness and darkness of a color. Seven principles of design - balance, rhythm, emphasis, proportion/scale, movement, contrast, and unity - are outlined.
Phenomics assisted breeding in crop improvementIshaGoswami9
As the population is increasing and will reach about 9 billion upto 2050. Also due to climate change, it is difficult to meet the food requirement of such a large population. Facing the challenges presented by resource shortages, climate
change, and increasing global population, crop yield and quality need to be improved in a sustainable way over the coming decades. Genetic improvement by breeding is the best way to increase crop productivity. With the rapid progression of functional
genomics, an increasing number of crop genomes have been sequenced and dozens of genes influencing key agronomic traits have been identified. However, current genome sequence information has not been adequately exploited for understanding
the complex characteristics of multiple gene, owing to a lack of crop phenotypic data. Efficient, automatic, and accurate technologies and platforms that can capture phenotypic data that can
be linked to genomics information for crop improvement at all growth stages have become as important as genotyping. Thus,
high-throughput phenotyping has become the major bottleneck restricting crop breeding. Plant phenomics has been defined as the high-throughput, accurate acquisition and analysis of multi-dimensional phenotypes
during crop growing stages at the organism level, including the cell, tissue, organ, individual plant, plot, and field levels. With the rapid development of novel sensors, imaging technology,
and analysis methods, numerous infrastructure platforms have been developed for phenotyping.
Or: Beyond linear.
Abstract: Equivariant neural networks are neural networks that incorporate symmetries. The nonlinear activation functions in these networks result in interesting nonlinear equivariant maps between simple representations, and motivate the key player of this talk: piecewise linear representation theory.
Disclaimer: No one is perfect, so please mind that there might be mistakes and typos.
dtubbenhauer@gmail.com
Corrected slides: dtubbenhauer.com/talks.html
hematic appreciation test is a psychological assessment tool used to measure an individual's appreciation and understanding of specific themes or topics. This test helps to evaluate an individual's ability to connect different ideas and concepts within a given theme, as well as their overall comprehension and interpretation skills. The results of the test can provide valuable insights into an individual's cognitive abilities, creativity, and critical thinking skills
Immersive Learning That Works: Research Grounding and Paths ForwardLeonel Morgado
We will metaverse into the essence of immersive learning, into its three dimensions and conceptual models. This approach encompasses elements from teaching methodologies to social involvement, through organizational concerns and technologies. Challenging the perception of learning as knowledge transfer, we introduce a 'Uses, Practices & Strategies' model operationalized by the 'Immersive Learning Brain' and ‘Immersion Cube’ frameworks. This approach offers a comprehensive guide through the intricacies of immersive educational experiences and spotlighting research frontiers, along the immersion dimensions of system, narrative, and agency. Our discourse extends to stakeholders beyond the academic sphere, addressing the interests of technologists, instructional designers, and policymakers. We span various contexts, from formal education to organizational transformation to the new horizon of an AI-pervasive society. This keynote aims to unite the iLRN community in a collaborative journey towards a future where immersive learning research and practice coalesce, paving the way for innovative educational research and practice landscapes.
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...Leonel Morgado
Current descriptions of immersive learning cases are often difficult or impossible to compare. This is due to a myriad of different options on what details to include, which aspects are relevant, and on the descriptive approaches employed. Also, these aspects often combine very specific details with more general guidelines or indicate intents and rationales without clarifying their implementation. In this paper we provide a method to describe immersive learning cases that is structured to enable comparisons, yet flexible enough to allow researchers and practitioners to decide which aspects to include. This method leverages a taxonomy that classifies educational aspects at three levels (uses, practices, and strategies) and then utilizes two frameworks, the Immersive Learning Brain and the Immersion Cube, to enable a structured description and interpretation of immersive learning cases. The method is then demonstrated on a published immersive learning case on training for wind turbine maintenance using virtual reality. Applying the method results in a structured artifact, the Immersive Learning Case Sheet, that tags the case with its proximal uses, practices, and strategies, and refines the free text case description to ensure that matching details are included. This contribution is thus a case description method in support of future comparative research of immersive learning cases. We then discuss how the resulting description and interpretation can be leveraged to change immersion learning cases, by enriching them (considering low-effort changes or additions) or innovating (exploring more challenging avenues of transformation). The method holds significant promise to support better-grounded research in immersive learning.
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...Sérgio Sacani
Context. With a mass exceeding several 104 M⊙ and a rich and dense population of massive stars, supermassive young star clusters
represent the most massive star-forming environment that is dominated by the feedback from massive stars and gravitational interactions
among stars.
Aims. In this paper we present the Extended Westerlund 1 and 2 Open Clusters Survey (EWOCS) project, which aims to investigate
the influence of the starburst environment on the formation of stars and planets, and on the evolution of both low and high mass stars.
The primary targets of this project are Westerlund 1 and 2, the closest supermassive star clusters to the Sun.
Methods. The project is based primarily on recent observations conducted with the Chandra and JWST observatories. Specifically,
the Chandra survey of Westerlund 1 consists of 36 new ACIS-I observations, nearly co-pointed, for a total exposure time of 1 Msec.
Additionally, we included 8 archival Chandra/ACIS-S observations. This paper presents the resulting catalog of X-ray sources within
and around Westerlund 1. Sources were detected by combining various existing methods, and photon extraction and source validation
were carried out using the ACIS-Extract software.
Results. The EWOCS X-ray catalog comprises 5963 validated sources out of the 9420 initially provided to ACIS-Extract, reaching a
photon flux threshold of approximately 2 × 10−8 photons cm−2
s
−1
. The X-ray sources exhibit a highly concentrated spatial distribution,
with 1075 sources located within the central 1 arcmin. We have successfully detected X-ray emissions from 126 out of the 166 known
massive stars of the cluster, and we have collected over 71 000 photons from the magnetar CXO J164710.20-455217.
ESR spectroscopy in liquid food and beverages.pptxPRIYANKA PATEL
With increasing population, people need to rely on packaged food stuffs. Packaging of food materials requires the preservation of food. There are various methods for the treatment of food to preserve them and irradiation treatment of food is one of them. It is the most common and the most harmless method for the food preservation as it does not alter the necessary micronutrients of food materials. Although irradiated food doesn’t cause any harm to the human health but still the quality assessment of food is required to provide consumers with necessary information about the food. ESR spectroscopy is the most sophisticated way to investigate the quality of the food and the free radicals induced during the processing of the food. ESR spin trapping technique is useful for the detection of highly unstable radicals in the food. The antioxidant capability of liquid food and beverages in mainly performed by spin trapping technique.
Unlocking the mysteries of reproduction: Exploring fecundity and gonadosomati...AbdullaAlAsif1
The pygmy halfbeak Dermogenys colletei, is known for its viviparous nature, this presents an intriguing case of relatively low fecundity, raising questions about potential compensatory reproductive strategies employed by this species. Our study delves into the examination of fecundity and the Gonadosomatic Index (GSI) in the Pygmy Halfbeak, D. colletei (Meisner, 2001), an intriguing viviparous fish indigenous to Sarawak, Borneo. We hypothesize that the Pygmy halfbeak, D. colletei, may exhibit unique reproductive adaptations to offset its low fecundity, thus enhancing its survival and fitness. To address this, we conducted a comprehensive study utilizing 28 mature female specimens of D. colletei, carefully measuring fecundity and GSI to shed light on the reproductive adaptations of this species. Our findings reveal that D. colletei indeed exhibits low fecundity, with a mean of 16.76 ± 2.01, and a mean GSI of 12.83 ± 1.27, providing crucial insights into the reproductive mechanisms at play in this species. These results underscore the existence of unique reproductive strategies in D. colletei, enabling its adaptation and persistence in Borneo's diverse aquatic ecosystems, and call for further ecological research to elucidate these mechanisms. This study lends to a better understanding of viviparous fish in Borneo and contributes to the broader field of aquatic ecology, enhancing our knowledge of species adaptations to unique ecological challenges.
Travis Hills' Endeavors in Minnesota: Fostering Environmental and Economic Pr...Travis Hills MN
Travis Hills of Minnesota developed a method to convert waste into high-value dry fertilizer, significantly enriching soil quality. By providing farmers with a valuable resource derived from waste, Travis Hills helps enhance farm profitability while promoting environmental stewardship. Travis Hills' sustainable practices lead to cost savings and increased revenue for farmers by improving resource efficiency and reducing waste.
2. 1.1 ACRONYMS
AASHTO American Association of State Highway and
Transportation Officials
ANSI American Nurserymen’s Specifications Institute
ASTM American Society for Testing Materials
DPWH Dept. of Public Works and Highways (Phil Govt)
USCS Unified Soil Classification System
1. EARTHWORKS
3. AASHTO SOIL CLASSIFICATION SYSTEM
• classifies inorganic soils for suitability as subgrade materials
in terms of good drainage and bearing capacity.
1. EARTHWORKS
1.2 DEFINITIONS, STANDARD TESTS
AASHTO defines particle sizes as:
• Boulders – above 75mm
• Gravel – 75mm to No.10 sieve
• Coarse Sand – No.10 to No.40 sieve
• Fine Sand – No.40 to No.200 sieve
• Silt-Clay Particles – passing No.200 sieve
4. ATTERBERG LIMITS
• are tests performed on soils passing the No.40 sieve as follows:
Liquid Limit (LL) The liquid limit is that moisture content at which a soil
changes from the liquid state to the plastic state,
measured when soil in a shallow dish flows to close a
12.5 mm groove after 25 drops from 1 cm.
Plastic Limit (PL) the water content at which a silt or clay material will just
begin to crumble when rolled into a tread approx 3.2mm
(1/8 inch) in diameter.
Plasticity Index (PI) is defined as the Liquid Limit minus the Plastic Limit :
LL – PL = PI , that is the range of water content over
which sediment behaves.
1. EARTHWORKS
1.2 DEFINITIONS, STANDARD TESTS
5. a. Fill materials - soil, crushed stone, and sand used to raise an
existing grade, or as a man-made-deposit; generally used under
footings, pavers, or concrete slabs on grade; classified under the
Unified Soil Classification System (USCS) as:
• GW, GM, GP – Gravels with >
50% retained on No. 200 sieve
and > 50% further retained on
No.40 sieve.
• SW, SM – or Sands with > 50%
are retained on No. 200 sieve
and 50% or more passes No.40
sieve.
1. EARTHWORKS
1.2 DEFINITIONS, STANDARD TESTS
6. b. Granular Fill or Filters – soil
materials with sand equivalent of
not less than 50%; used to prevent
the movement of fine particles out
of soils and other natural materials
through which seepage occurs;
conforming to ASTM C 33, size 67.
Under the ATTERBERG LIMITS,
shall have LL not exceeding 25%
when tested in accordance with
ASTM 423, and a PI not exceeding
12 % when tested in accordance
with ASTM 424.
1. EARTHWORKS
1.2 DEFINITIONS, STANDARD TESTS
7. c. Borrow Fill - selected
laboratory-approved pit-run
gravel, disintegrated granite,
sand, shale, cinders or other
similar materials with not more
than 35% fraction passing the No.
200 sieve.
1. EARTHWORKS
1.2 DEFINITIONS, STANDARD TESTS
Under the ATTERBERG LIMITS, the fraction passing the No. 40 sieve
shall have an LL not greater than 35% and a PI not greater than 12% ,
used as fill or subgrade conforming to the AASHTO Soil Classification
System
8. d. Base Course Materials - hard
durable fragments of stone and a filler of
sand or other finely divided mineral
matter, free from vegetable matter and
lumps of clay, complying with the
following AASHO METHODS T-11 and
T-26 Grading Requirements:
Sieve Designation
U.S. Standard Sieve
Percent Weight Passing
Type "B" Base Course
1 - 1/2" 100
1" 85 - 100
No. 4 20 - 45
No. 200 5 - 12
1. EARTHWORKS
1.2 DEFINITIONS, STANDARD TESTS
9. Local Borrow Fill materials:
BANDA Y BANDA
ESCOMBRO P5,000 per 15 16 cum
ESCOMBRO – BULIK (for Rip-rap)
1. EARTHWORKS
1.2 DEFINITIONS, STANDARD TESTS
10. 1. EARTHWORKS
1.4 RIPRAP (ROCK LINING)
- a constructed layer or facing
of stone, placed to prevent
erosion, scour or sloughing of
a structure or embankment.
- term "riprap" also is frequently
defined as the stone used to
construct such a lining.
- a special class of very large aggregate. Riprap gradations range in
diameter from 2 inches to 42 inches. Because riprap is subject to
significant energy, it is important that it be sound and free from defects or
entrained substances such soil shale or organic materials.
- resistance of riprap to displacement of moving water is a function of the
weight, size, and shape of the stone, the geometry of the channel or bank
it is protecting, and the filter blanket over which the riprap is placed.
11. - Wire-enclosed riprap
- consists of mats or baskets
fabricated from wire mesh,
filled with small riprap, and
anchored to a slope.
- Wrapping the riprap enables
use of smaller rocks for the
same resistance to
displacement by water energy
as larger unwrapped riprap.
1. EARTHWORKS
1.5 GABION SYSTEM
12. - is particularly advantageous in
areas inaccessible to trucks or
large construction equipment.
- wire baskets also allow steeper
(i.e., vertical) channel linings to
be constructed.
- gabion baskets or mattresses
can be from commercially
available wire units or from
available wire fencing material
or may be fabricated from No. 9
or No. 12 galvanized wire.
1. EARTHWORKS
1.5 GABION SYSTEM
13. Criteria for Gabion Thickness
Bank Soil Type
Maximum
Velocity (feet
per second)
Bank Slope
Minimum Required
Mattress
Thickness (inches)
Clays, heavy cohesive soils 10 <1:3 9
13-16 <1:2 12
any >1:2 18+
Silts, fine sands 10 <1:2 12
Shingle with gravel 16 <1:3 9
20 <1:2 12
any >1:2 18+
the erodibility of the bank soil
the maximum velocity of the water, and
the bank slope.
- According to FHA guidance, the thickness of wire mattresses used for
channel linings is determined by three factors:
1. EARTHWORKS
1.5 GABION SYSTEM
14. 1. EARTHWORKS
1.6 GEOSYNTHETICS
• Geotextiles
• Geomembranes
• Geocomposites
• Geonets and
• Geocells
Construction materials consisting of synthetic components made for use
with or within earth materials generally are referred to as geosynthetics.
Geosynthetics can be further categorized into the following components:
15. a. Geotextiles are the most common geosynthetics, and consist of
woven or nonwoven fabric made from polymeric materials such as
polyester or polypropylene generally used for separation, filtration, and
in-plane drainage.
Reinforcement
when the geotextile fabric lends its strength to low load-bearing soil
to increase the overall design strength and decrease the amount of
sub-base and base course material.
1. EARTHWORKS
1.6 GEOSYNTHETICS
16. Separation
when the geotextile is
placed between
dissimilar materials to
prevent migration of one
of the materials into the
other.
1. EARTHWORKS
a. Geotextiles
1.6 GEOSYNTHETICS
17. a. Geotextiles
Filtration
when the geotextile is used to prevent the movement of fine
particles from soil through which seepage occurs .
1. EARTHWORKS
1.6 GEOSYNTHETICS
18. Subsurface
those employed in sub-
surface drainage
applications, such as
filters around under-
drains or edge drains,
or under paving.
Filtration has three separate categories:
1. EARTHWORKS
a. Geotextiles
1.6 GEOSYNTHETICS
19. Erosion Control
those employed to protect
cut slopes or drainage
features. When used in
conjunction with a stone
lining or rip rap, and as such,
they would serve a
secondary function of
separation.
1. EARTHWORKS
a. Geotextiles
Filtration
1.6 GEOSYNTHETICS
20. Sediment Control
are exclusively those used
for silt fence applications.
While they serve the
purpose of "filtering" runoff,
the mechanism by which
they function is different than
subsurface drainage or
erosion control applications.
1. EARTHWORKS
a. Geotextiles
Filtration
1.6 GEOSYNTHETICS
21. a. Geotextiles
In-Plane Drainage
particular thick-needled
nonwoven geotextiles have
sufficient in-plane flow
capacity for use as flow
conduits in certain
applications.
1. EARTHWORKS
1.6 GEOSYNTHETICS
22. b. Geomembranes are continuous polymeric sheets that are
impermeable. The most frequently used for ground applications are:
thermoplastic products manufactured from high-density
polyethylene (HDPE) and polyvinyl chloride (PVC).
thermoset polymer Ethylene propylene diene monomer (EPDM)
frequently used for membrane roofing applications.
1. EARTHWORKS
1.6 GEOSYNTHETICS
23. Different types of geomembranes have significantly different properties
including :
Strength
Longevity
resistance to ultraviolet light
thermal expansion and contraction
chemical resistance, and
ease of installation
Geomembranes should not to be subjected to tensile stresses and
should be treated gently during installation and subsequent use.
1. EARTHWORKS
b. Geomembranes :
1.6 GEOSYNTHETICS
24. c. Geocomposites
consist of a combination of
geosynthetic components; are
usually sheet or edge drains
consisting of a prefabricated
core to which a geotextile filter
is bonded.
The core provides void space to
which water can flow in-plane
while the geotextile filter keeps
soil from filling the voids
created by the core.
Geocomposite sheet drains are
available that allow flow in from
one or both faces.
1. EARTHWORKS
1.6 GEOSYNTHETICS
25. d. Geonet
is a type of geosynthetic that
consists of a continuous
extrusion of polymeric ribs that
form void space through which
provide in-plane flow capacity.
Geonets are available with or
without bonded geotextile
filters. Geonets with bonded
geotextile filters are sometimes
referred to as composite
drainage nets (CDNs).
1. EARTHWORKS
1.6 GEOSYNTHETICS
26. e. Geocells
are three-dimensional prefabricated
polymeric systems ranging from 100 to
200 mm (4 to 8 inches) high. The
geocell systems are collapsed for
delivery to the site. Upon arrival at a
site, they are spread open and filled to
form a three-dimensional reinforced
mattress.
Originally developed to rapidly stabilize
soft subgrades for mobilization of large
equipment, they are now frequently
used for protection and stabilization of
steep slop surfaces and protective
linings for channels.
1. EARTHWORKS
1.6 GEOSYNTHETICS
27. 1. EARTHWORKS
1.7 SLOPE-EROSION PROTECTION MATERIALS
These include materials used for both
temporary and permanent erosion
protection.
Temporary materials consist of open
mesh polymeric systems, biodegradable
mesh system (e.g., coir jute), or a
combination of polymeric and
biodegradable mesh.
The open mesh systems serve as a
semipermanent mulch, anchoring seeds
and soil particles subject to erosive
flows in channels. Greater flow rates
and volumes usually require denser
mesh and more durable construction.
28. 2. TERMITE AND BUKBOK PROOFING
2.1 TERMITE PROOFING – there are three types:
a. Physical barriers
b. Chemical barriers
c. Colony Elimination (Bait) System
29. 2. TERMITE AND BUKBOK PROOFING
2.1 TERMITE PROOFING
a. Physical barriers: prevent termites from accessing the wood in a
home. There are a variety of methods:
Termite Resistant Sand - a
layer of sand with uniform size
particles. The sand must be
large enough to prevent the
termite from moving through it
effectively and of a consistency
that prevents its use in "tunnel"
construction. Sometimes used
around the foundation of a home
during construction.
30. Termite Mesh - steel mesh product that is fine enough to keep even
tiny termites from passing through it. Termite Mesh is used in slab
construction (concrete slabs are poured over or with the mesh). It is
also used to wrap pipes and other access areas.
2. TERMITE AND BUKBOK PROOFING
2.1 TERMITE PROOFING
a. Physical barriers:
31. Home Construction - in particularly high-risk termite
environments, homes are sometimes designed on high concrete
pillars to physically separate the home from the distance termites
can travel from their colony.
2. TERMITE AND BUKBOK PROOFING
2.1 TERMITE PROOFING
a. Physical barriers:
32. 2. TERMITE AND BUKBOK PROOFING
2.1 TERMITE PROOFING
b. Chemical barriers: The objective of this method is to establish a
continuous termiticide barrier or treated area between potential soil
access routes and the structure to either kill or repel subterranean
termites that attempt to reach the structure. A termiticide is a type of
chemical used to control termites.
Pre-construction chemical barriers
are almost always applied during construction, to the soil and
foundation. There are also termite resistant building products, from
drywall to floor joists. These are often treated with borates before
use in home construction. Pre-construction applications must use
enough insecticide (often 100 gallons or more) at a sufficient
concentration to erect an adequate barrier.
33. 2. TERMITE AND BUKBOK PROOFING
2.1 TERMITE PROOFING
b. Chemical barriers
• Vertical barriers – are created by applying 4 gallons of termiticide
per 3 linear meters by rodding or trenching around the base of
foundations, plumbing, utility entrances, expansion joints, and where
two slabs will join.
If areas to be treated are more than 300mm (one foot) deep, then
each 300mm of depth should receive 16 liters (4 gallons) per 3 linear
meters.
Treatment of trenches involves digging a trench, no wider than
150mm (6 inches), applying termiticide to the trench, and mixing with
soil as the soil is replaced.
Hollow block voids of foundations should also be treated with 16 liters
(4 gallons) of termiticide per 3 linear meters .
34. 2. TERMITE AND BUKBOK PROOFING
2.1 TERMITE PROOFING
b. Chemical barriers
Horizontal barriers
are made by applying 4 liters (one
gallon) of termiticide per 3 square
meters. The treatment is usually
accomplished by applying a
coarse spray at low pressure. All
termite treatments to slab
construction should include
horizontal barriers, which are
relatively easy to apply.
Slab treatment - involves
drilling through the slab floor
and injecting termiticides into
the soil at regular intervals.
35. Basements and Crawl Spaces
- trenches are dug around the
foundation, termiticide applied
and the trench filled back in.
Chemicals may also be injected
into the soil in the crawl
space/basement and around
the foundation. The walls and
foundation of the home are also
treated, as well as around piers,
pipes, and other access point.
b. Chemical barriers
Horizontal barriers
2. TERMITE AND BUKBOK PROOFING
2.1 TERMITE PROOFING
36. c. Colony Elimination (Bait) System
The objective of this method is to
attract the termite workers to forage on
a slow-acting insect-growth regulator
(IGR) called hexaflumuron that will
work to eliminate the termite workers
population and eventually result in the
death of the queen and any
subsequent future queens, and
therefore the entire colony.
The system employs baiting and
monitoring devices, installed where
evidence of infestation is found: on the
ground outside the house, on walls,
floors, ceilings inside the house.
2. TERMITE AND BUKBOK PROOFING
2.1 TERMITE PROOFING
37. 3. ROADS AND PARKING
3.1 SUBGRADE AND BASE COURSE MATERIALS
a. Borrow Material
b. Base Course Material
c. Choker Aggregate:
A "choker" course is a filter
layer of finer material that is
installed over a coarse road
base material. The purpose
of the choker course is to
provide a stable foundation
of fine-grained aggregate for
the construction of a
pavement.
38. 3.2 SURFACE PAVING MATERIAL
a. Concrete (See Div 03 Concrete)
b. Bituminous Surfacing
3. ROADS AND PARKING
HOT MIX ASPHALT or
ASPHALTIC CONCRETE
– a dark brown to black
cementitious material,
solid or semi-solid,
composed of bitumens
which when mixed with
graded aggregates is used
as paving material by
placing, shaping, and
compacting while hot over
a prepared base.
39. COLD MIX ASPHALT OR ASPHALTIC CONCRETE – is asphaltic
concrete prepared with a relatively light and slow-curing asphalt, placed
over a prepared surface without heat. This hardens to a state that is
less firm and durable than hot-mix asphaltic concrete.
3.2 SURFACE PAVING MATERIAL
b. Bituminous Surfacing
3. ROADS AND PARKING
40. ASPHALTIC MACADAM – paving for roads and other surfaces
formed by grading and compacting layers of crushed stone or
gravel, then the top layer is bound by asphalt to stabilize the
stone, provide a smoother surface, and seal against water
penetration.
3.2 SURFACE PAVING MATERIAL
b. Bituminous Surfacing
3. ROADS AND PARKING
41. ASPHALT OVERLAY – when one or more courses or layers of
asphalt an asphalt leveling course made of an asphalt and
aggregate mixture of variable thickness to correct the contour of
existing surface, are placed on existing pavement.
3.2 SURFACE PAVING MATERIAL
b. Bituminous Surfacing
3. ROADS AND PARKING