This document provides an overview of various earth construction techniques. It begins by explaining that earth structures are made primarily from soil and may include additives like straw or cement to add strength. Common earth building materials include mud, cob, adobe bricks, rammed earth, and compressed earth blocks.
The document then discusses soil composition and types, explaining that clay, silt, sand and gravel can be used alone or combined in earth construction. It provides details on testing soil properties through methods like the biscuit test. Stabilizers like lime, cement or plant fibers can be added to improve soil suitability.
Construction techniques covered include mud construction, cob building, adobe brick making, wattle and daub,
Fundamentals of Soil Science, Types of soils, Principles of Soil Stabilization, Characteristics of
core, Types of Stabilizers, Requirements and Types of mudwall building and surface protection.
Mud has been used as a building material for thousands of years. It provides a sustainable construction option that requires minimal energy and resources. Various mud construction techniques are described, including stacked earth (COB), rammed earth, adobe, wattle and daub, formed earth, earth filled in, compressed earth blocks, extruded earth, and cut earth. Mud construction provides benefits like natural temperature regulation, low costs, and environmental friendliness compared to other materials. However, mud buildings require regular maintenance and can be susceptible to damage from water or pests.
Timber - Types of Woods, Plywood, Veneer, Laminate, Blockboard with Market Su...Uma Pandey
Presentation for Interior Students. Market survey on Timber (Plywood, Veneer, Laminate etc) with their prices, thickness and Sizes available in the market
Low cost building materials and construction techniquesYash Kotgirwar
This document discusses low cost building materials and construction techniques to reduce costs. It describes using natural materials like bamboo, compressed earth blocks, mud plaster and straw which are sustainable and have low embodied energy. Manufactured materials discussed include fly ash bricks and coal washery reject bricks. Construction techniques to reduce costs include rat trap bond, cob construction, wattle and daub, jack arch roofs and using jali brickwork. The document emphasizes using local, recycled and non-toxic materials to minimize costs while ensuring longevity and environmental friendliness of structures.
The document discusses traditional earth construction techniques that have been used for over 9,000 years around the world, outlines different types of soils used for construction, and examines contemporary innovations that can help optimize earth as a building material and make it more viable for modern architecture. It explores how studying traditional methods and addressing issues like shrinkage can help earth construction be better utilized today through improved designs, materials, and techniques.
This document discusses partition walls, which divide interior spaces without carrying structural loads. It defines partition walls and lists their advantages such as dividing spaces, providing privacy, and being lightweight. It describes requirements for good partition walls and various types including brick, hollow block, concrete, glass, wood, strawboard, plaster, metal, and asbestos cement. Movable and portable partition walls are also discussed. Common applications include offices, schools, hotels, and event spaces.
Earth structure materials may be as simple as mud, or mud mixed with straw to make cob. Sturdy dwellings may be also built from sod or turf. Soil may be stabilized by the addition of lime or cement, and may be compacted into rammed earth. Construction is faster with pre-formed adobe or mudbricks, compressed earth blocks, earthbags or fired clay bricks.
Special Thanks to Sarthak Tapasvi for sharing his experiences and work.
Fundamentals of Soil Science, Types of soils, Principles of Soil Stabilization, Characteristics of
core, Types of Stabilizers, Requirements and Types of mudwall building and surface protection.
Mud has been used as a building material for thousands of years. It provides a sustainable construction option that requires minimal energy and resources. Various mud construction techniques are described, including stacked earth (COB), rammed earth, adobe, wattle and daub, formed earth, earth filled in, compressed earth blocks, extruded earth, and cut earth. Mud construction provides benefits like natural temperature regulation, low costs, and environmental friendliness compared to other materials. However, mud buildings require regular maintenance and can be susceptible to damage from water or pests.
Timber - Types of Woods, Plywood, Veneer, Laminate, Blockboard with Market Su...Uma Pandey
Presentation for Interior Students. Market survey on Timber (Plywood, Veneer, Laminate etc) with their prices, thickness and Sizes available in the market
Low cost building materials and construction techniquesYash Kotgirwar
This document discusses low cost building materials and construction techniques to reduce costs. It describes using natural materials like bamboo, compressed earth blocks, mud plaster and straw which are sustainable and have low embodied energy. Manufactured materials discussed include fly ash bricks and coal washery reject bricks. Construction techniques to reduce costs include rat trap bond, cob construction, wattle and daub, jack arch roofs and using jali brickwork. The document emphasizes using local, recycled and non-toxic materials to minimize costs while ensuring longevity and environmental friendliness of structures.
The document discusses traditional earth construction techniques that have been used for over 9,000 years around the world, outlines different types of soils used for construction, and examines contemporary innovations that can help optimize earth as a building material and make it more viable for modern architecture. It explores how studying traditional methods and addressing issues like shrinkage can help earth construction be better utilized today through improved designs, materials, and techniques.
This document discusses partition walls, which divide interior spaces without carrying structural loads. It defines partition walls and lists their advantages such as dividing spaces, providing privacy, and being lightweight. It describes requirements for good partition walls and various types including brick, hollow block, concrete, glass, wood, strawboard, plaster, metal, and asbestos cement. Movable and portable partition walls are also discussed. Common applications include offices, schools, hotels, and event spaces.
Earth structure materials may be as simple as mud, or mud mixed with straw to make cob. Sturdy dwellings may be also built from sod or turf. Soil may be stabilized by the addition of lime or cement, and may be compacted into rammed earth. Construction is faster with pre-formed adobe or mudbricks, compressed earth blocks, earthbags or fired clay bricks.
Special Thanks to Sarthak Tapasvi for sharing his experiences and work.
The document provides an overview of different types of cladding systems. It defines cladding as an exterior finishing system that protects the underlying structure and provides decorative finish. There are many types of cladding including dry wall, wet wall, weatherboard, timber, stone, external foam, metal, concrete, and brick cladding. The major purpose of cladding is to separate the indoor and outdoor environments to maintain suitable indoor conditions by keeping water out, preventing air leakage, controlling light, heat radiation and conduction, and controlling sound.
Bamboo is a versatile building material with several advantages such as strength, flexibility, earthquake resistance, low cost and minimal environmental impact. However, untreated bamboo has low durability. Various treatments like borax-boric acid preservation, neem oil treatment can improve the durability. Bamboo can be used for walls, foundations, columns, beams and roofing. It provides cost and energy benefits compared to concrete while maintaining structural strength. However, limitations include jointing techniques, flammability and lack of codified design guidance.
This presentation is an overview of Governments role in propagating the different types of Cost Effective technologies on several Government and local levels through various organisations.
Traditional building materials like wood, stone, clay, and thatch allow moisture to pass through and evaporate freely, keeping structures dry. Modern materials discussed include fired bricks, concrete blocks, stone, wood, fabric, paper, ceramics, metals, insulation, and polymers. Traditional materials were chosen based on local availability and function, and allowed buildings to "breathe".
This document discusses timber flooring. It begins by defining timber flooring as flooring made of wood. It then discusses the history of timber flooring from the Baroque Era to modern trends. It describes different types of timber flooring like strip, wood block, parquet and plank flooring. It also discusses joists, construction details, joinery details, characteristics, advantages and disadvantages of timber flooring. In the end, it provides sketches illustrating different timber floor constructions and common joint types used in timber flooring.
The document summarizes an interview with the architect Prashant Dupare about the Brick House he designed in Wada, Mumbai. The Brick House takes inspiration from vernacular architecture, using local materials and techniques like rat-trap brickwork. It is curved in form and flows organically with the landscape. Openings are positioned to ensure natural light, ventilation and passive cooling appropriate to the climate. The architect was interviewed about the design process and how he combined vernacular traditions with modern approaches like built-in furniture. The client was also interviewed about why they chose this site and style, and their experience living in the house.
WALL FINISHES - MATERIALS AND APPLICATIONSSoumya Sharma
This document discusses various types of wall finishing systems. It describes 13 different types of wall finishes including wahoo walls, wood wainscoting, OSB, textured paints, wallpapers, wood paneling, veneer plaster, leather panels, tile wainscoting, stone veneer, mosaic tiling, stainless steel panels, and laminate sheets. Each type is briefly described in terms of materials used, applications, and availability. The document provides an overview of common wall finishing options for both interior and exterior applications.
Bamboo (Bambuseae) is a tribe of flowering perennial evergreen plants in the grass family Poaceae, subfamily Bambusoideae, tribe Bambuseae; although, the forestry services and departments of many countries where bamboo is utilized as a building material consider bamboo to be a forestry product, and it is specifically harvested as a tree exclusively for the wood it produces, which in many ways is a wood superior in strength and resilience to other natural, fibrous building materials.In fact it is often referred to as a tree by cultures who harvest it as wood. Giant bamboos are the largest members of the grass family. In bamboos, the internodal regions of the stem are hollow and the vascular bundles in the cross section are scattered throughout the stem instead of in a cylindrical arrangement. The dicotyledonous woody xylem is also absent. The absence of secondary growth wood causes the stems of monocots, even of palms and large bamboos, to be columnar rather than tapering.Bamboos are some of the fastest-growing plants in the world,due to a unique rhizome-dependent system. Certain species of bamboo can grow 35 inches within a 24-hour period, at a rate of 3 cm/h (a growth of approximately 1 millimeter (or 0.02 inches) every 2 minutes). Bamboos are of notable economic and cultural significance in South Asia, Southeast Asia and East Asia, being used for building materials, as a food source, and as a versatile raw product. Bamboo has a higher compressive strength than wood, brick or concrete and a tensile strength that rivals steel.
The word bamboo comes from the Kannada term bambu, which was introduced to English through Malay.
Construction
Further information: Bamboo construction
Bamboo, like true wood, is a natural composite material with a high strength-to-weight ratio useful for structures.
In its natural form, bamboo as a construction material is traditionally associated with the cultures of South Asia, East Asia and the South Pacific, to some extent in Central and South America, and by extension in the aesthetic of Tiki culture. In China and India, bamboo was used to hold up simple suspension bridges, either by making cables of split bamboo or twisting whole culms of sufficiently pliable bamboo together. One such bridge in the area of Qian-Xian is referenced in writings dating back to 960 AD and may have stood since as far back as the third century BC, due largely to continuous maintenance.
Bamboo has also long been used as scaffolding; the practice has been banned in China for buildings over six stories, but is still in continuous use for skyscrapers in Hong Kong.In the Philippines, the nipa hut is a fairly typical example of the most basic sort of housing where bamboo is used; the walls are split and woven bamboo, and bamboo slats and poles may be used as its support.
Folded plates and space truss structuresRajesh Kolli
The document discusses folded plates and space trusses. It defines folded plates as 3D structures made of straight pieces joined at sharp edges, and notes they are best constructed from reinforced concrete. Space trusses, also called space frames, are lightweight rigid structures made of interlocking struts in a geometric pattern that derive strength from triangular frames transmitting loads as tension and compression. Examples given are the Yokohama passenger terminal roof's folded plates and the Aspen Art Museum's long-span wood space frame roof.
A cavity wall consists of two masonry walls separated by a continuous air space. The outer wall faces outside and is typically brick. The inner wall faces inside and can also be brick or concrete block. The walls are connected by metal ties. Weep holes are placed in the outer wall to allow water in the cavity to drain out. Flashing is installed to direct water out through the weep holes. The cavity helps drain water and improves insulation.
The document discusses different types of partition walls used to divide interior spaces. It defines partition walls and lists their requirements. The main types described include brick, hollow block, clay block, concrete, glass, wooden, strawboard, plaster slab, asbestos cement, metal and portable partitions. Details are provided on the construction and materials used for each type. Advantages of partitions walls are that they divide space into rooms while being lighter and less expensive than load-bearing walls.
The document discusses several cost effective building materials including fly ash bricks, concrete masonry units, and soil cement blocks. Fly ash bricks are made from fly ash and water and cost 20% less than traditional clay bricks. Concrete masonry units use 1/3 less energy than burnt bricks and allow for steel reinforcement. Soil cement blocks are made from locally available soil, cement, and quarry dust and provide insulation without needing plaster.
Framed structures are building skeleton frameworks formed by columns and beams. There are two main types: in-situ reinforced concrete frames and prefabricated frames. Rectangular framed structures use columns and beams arranged at right angles to support floors, walls, and roofs. They are commonly used for multi-story buildings like offices, schools, and hospitals. Framed structures provide large open floor plans and are adaptable to different shapes. Earthquake-resistant features in framed structures include shear walls, moment-resisting frames, and braced structures which resist lateral forces during seismic activity.
This document provides information about timber as a vernacular construction material. It discusses the properties, advantages, and disadvantages of timber. It describes various uses of timber in construction including roofing, floors, framing, staircases, walls, doors, and windows. The document also examines the kath-khuni architecture of the Himalayan vernacular, including its materials, construction techniques, and aesthetic elements like carving. Examples of some of the oldest wooden buildings and structures from around the world are also mentioned.
This document discusses mud as a building material. It provides details on different types of soils and tests to determine their suitability for construction. Various traditional earth building techniques are described such as cob, rammed earth, adobe and wattle and daub. Stabilizers that can improve soil properties for building are also outlined.
In this era of concrete, let's understand the impact on the environment and revive the old technique, construction and make the environment pollution-free.
Floors provide walking surfaces inside buildings and come in a variety of materials. They consist of subfloors for support topped with flooring or floor coverings. Common flooring materials include wood, stone, tile, vinyl, carpet and rugs. Proper installation is important and involves preparing a level base and adding underlayment before installing the flooring material. Each type of flooring has advantages like durability, maintenance needs, noise reduction and appearance that make some more suitable for different rooms and uses than others. Precautions like regular cleaning and protecting from moisture are needed to keep different flooring types in good condition long-term.
Gypsum board, also known as drywall or plasterboard, is a building material made of gypsum plaster pressed between two thick sheets of paper. It is used to make interior walls, ceilings, and partitions. Gypsum board provides a smooth, monolithic surface that can be decorated. To produce it, calcined gypsum is mixed with water and additives to form a slurry between the paper layers. As it dries, the gypsum recrystallizes and bonds to the paper. A false ceiling, or dropped ceiling, is a secondary ceiling hung below the main structural ceiling, creating a space to hide wiring and ductwork while allowing access. Exposed grid ceilings have visible grid systems into which panels
This document discusses bamboo as a building material, specifically for roof construction. It outlines three types of bamboo (monopodial, sympodial, climbing), and properties that make bamboo suitable for construction including being renewable, strong but light. Bamboo is mainly found in tropical and sub-tropical regions. The document then details various methods of constructing bamboo roofs, including using trusses, layering, and traditional methods using halves and whole culms. Bamboo roofs are described as being cooler, more insulating, and waterproof when properly treated and constructed.
The document discusses various earth-based building materials and techniques. It provides details on analyzing soil composition through various tests. Mud construction materials like cob, rammed earth, adobe, and stabilized mud bricks are explained. Cob involves shaping mud into egg-shaped masses and stacking them without forms. Rammed earth uses a form to compress damp soil mixtures into solid walls. Adobe involves shaping soil-straw mixtures into bricks that are sun-dried. Indigenous stabilizers like straw and plant juices can be used to improve soil properties for construction.
This document provides information on various mud construction techniques, including soil testing methods, stabilization techniques, and specific roofing methods like the Guna vault roof and Nubian dome. Some key points:
- Various field and lab tests are described to determine the composition and properties of soils for construction, including color, texture, biscuit, and sieve tests.
- Stabilization techniques can improve soil properties by adding materials like cement, straw or plant juices.
- The Guna vault roof is made from tapered burnt clay pipes socketed together in arches to form a strong, lightweight roof.
- The Nubian dome technique builds vaults and domes without centering by laying courses almost
The document provides an overview of different types of cladding systems. It defines cladding as an exterior finishing system that protects the underlying structure and provides decorative finish. There are many types of cladding including dry wall, wet wall, weatherboard, timber, stone, external foam, metal, concrete, and brick cladding. The major purpose of cladding is to separate the indoor and outdoor environments to maintain suitable indoor conditions by keeping water out, preventing air leakage, controlling light, heat radiation and conduction, and controlling sound.
Bamboo is a versatile building material with several advantages such as strength, flexibility, earthquake resistance, low cost and minimal environmental impact. However, untreated bamboo has low durability. Various treatments like borax-boric acid preservation, neem oil treatment can improve the durability. Bamboo can be used for walls, foundations, columns, beams and roofing. It provides cost and energy benefits compared to concrete while maintaining structural strength. However, limitations include jointing techniques, flammability and lack of codified design guidance.
This presentation is an overview of Governments role in propagating the different types of Cost Effective technologies on several Government and local levels through various organisations.
Traditional building materials like wood, stone, clay, and thatch allow moisture to pass through and evaporate freely, keeping structures dry. Modern materials discussed include fired bricks, concrete blocks, stone, wood, fabric, paper, ceramics, metals, insulation, and polymers. Traditional materials were chosen based on local availability and function, and allowed buildings to "breathe".
This document discusses timber flooring. It begins by defining timber flooring as flooring made of wood. It then discusses the history of timber flooring from the Baroque Era to modern trends. It describes different types of timber flooring like strip, wood block, parquet and plank flooring. It also discusses joists, construction details, joinery details, characteristics, advantages and disadvantages of timber flooring. In the end, it provides sketches illustrating different timber floor constructions and common joint types used in timber flooring.
The document summarizes an interview with the architect Prashant Dupare about the Brick House he designed in Wada, Mumbai. The Brick House takes inspiration from vernacular architecture, using local materials and techniques like rat-trap brickwork. It is curved in form and flows organically with the landscape. Openings are positioned to ensure natural light, ventilation and passive cooling appropriate to the climate. The architect was interviewed about the design process and how he combined vernacular traditions with modern approaches like built-in furniture. The client was also interviewed about why they chose this site and style, and their experience living in the house.
WALL FINISHES - MATERIALS AND APPLICATIONSSoumya Sharma
This document discusses various types of wall finishing systems. It describes 13 different types of wall finishes including wahoo walls, wood wainscoting, OSB, textured paints, wallpapers, wood paneling, veneer plaster, leather panels, tile wainscoting, stone veneer, mosaic tiling, stainless steel panels, and laminate sheets. Each type is briefly described in terms of materials used, applications, and availability. The document provides an overview of common wall finishing options for both interior and exterior applications.
Bamboo (Bambuseae) is a tribe of flowering perennial evergreen plants in the grass family Poaceae, subfamily Bambusoideae, tribe Bambuseae; although, the forestry services and departments of many countries where bamboo is utilized as a building material consider bamboo to be a forestry product, and it is specifically harvested as a tree exclusively for the wood it produces, which in many ways is a wood superior in strength and resilience to other natural, fibrous building materials.In fact it is often referred to as a tree by cultures who harvest it as wood. Giant bamboos are the largest members of the grass family. In bamboos, the internodal regions of the stem are hollow and the vascular bundles in the cross section are scattered throughout the stem instead of in a cylindrical arrangement. The dicotyledonous woody xylem is also absent. The absence of secondary growth wood causes the stems of monocots, even of palms and large bamboos, to be columnar rather than tapering.Bamboos are some of the fastest-growing plants in the world,due to a unique rhizome-dependent system. Certain species of bamboo can grow 35 inches within a 24-hour period, at a rate of 3 cm/h (a growth of approximately 1 millimeter (or 0.02 inches) every 2 minutes). Bamboos are of notable economic and cultural significance in South Asia, Southeast Asia and East Asia, being used for building materials, as a food source, and as a versatile raw product. Bamboo has a higher compressive strength than wood, brick or concrete and a tensile strength that rivals steel.
The word bamboo comes from the Kannada term bambu, which was introduced to English through Malay.
Construction
Further information: Bamboo construction
Bamboo, like true wood, is a natural composite material with a high strength-to-weight ratio useful for structures.
In its natural form, bamboo as a construction material is traditionally associated with the cultures of South Asia, East Asia and the South Pacific, to some extent in Central and South America, and by extension in the aesthetic of Tiki culture. In China and India, bamboo was used to hold up simple suspension bridges, either by making cables of split bamboo or twisting whole culms of sufficiently pliable bamboo together. One such bridge in the area of Qian-Xian is referenced in writings dating back to 960 AD and may have stood since as far back as the third century BC, due largely to continuous maintenance.
Bamboo has also long been used as scaffolding; the practice has been banned in China for buildings over six stories, but is still in continuous use for skyscrapers in Hong Kong.In the Philippines, the nipa hut is a fairly typical example of the most basic sort of housing where bamboo is used; the walls are split and woven bamboo, and bamboo slats and poles may be used as its support.
Folded plates and space truss structuresRajesh Kolli
The document discusses folded plates and space trusses. It defines folded plates as 3D structures made of straight pieces joined at sharp edges, and notes they are best constructed from reinforced concrete. Space trusses, also called space frames, are lightweight rigid structures made of interlocking struts in a geometric pattern that derive strength from triangular frames transmitting loads as tension and compression. Examples given are the Yokohama passenger terminal roof's folded plates and the Aspen Art Museum's long-span wood space frame roof.
A cavity wall consists of two masonry walls separated by a continuous air space. The outer wall faces outside and is typically brick. The inner wall faces inside and can also be brick or concrete block. The walls are connected by metal ties. Weep holes are placed in the outer wall to allow water in the cavity to drain out. Flashing is installed to direct water out through the weep holes. The cavity helps drain water and improves insulation.
The document discusses different types of partition walls used to divide interior spaces. It defines partition walls and lists their requirements. The main types described include brick, hollow block, clay block, concrete, glass, wooden, strawboard, plaster slab, asbestos cement, metal and portable partitions. Details are provided on the construction and materials used for each type. Advantages of partitions walls are that they divide space into rooms while being lighter and less expensive than load-bearing walls.
The document discusses several cost effective building materials including fly ash bricks, concrete masonry units, and soil cement blocks. Fly ash bricks are made from fly ash and water and cost 20% less than traditional clay bricks. Concrete masonry units use 1/3 less energy than burnt bricks and allow for steel reinforcement. Soil cement blocks are made from locally available soil, cement, and quarry dust and provide insulation without needing plaster.
Framed structures are building skeleton frameworks formed by columns and beams. There are two main types: in-situ reinforced concrete frames and prefabricated frames. Rectangular framed structures use columns and beams arranged at right angles to support floors, walls, and roofs. They are commonly used for multi-story buildings like offices, schools, and hospitals. Framed structures provide large open floor plans and are adaptable to different shapes. Earthquake-resistant features in framed structures include shear walls, moment-resisting frames, and braced structures which resist lateral forces during seismic activity.
This document provides information about timber as a vernacular construction material. It discusses the properties, advantages, and disadvantages of timber. It describes various uses of timber in construction including roofing, floors, framing, staircases, walls, doors, and windows. The document also examines the kath-khuni architecture of the Himalayan vernacular, including its materials, construction techniques, and aesthetic elements like carving. Examples of some of the oldest wooden buildings and structures from around the world are also mentioned.
This document discusses mud as a building material. It provides details on different types of soils and tests to determine their suitability for construction. Various traditional earth building techniques are described such as cob, rammed earth, adobe and wattle and daub. Stabilizers that can improve soil properties for building are also outlined.
In this era of concrete, let's understand the impact on the environment and revive the old technique, construction and make the environment pollution-free.
Floors provide walking surfaces inside buildings and come in a variety of materials. They consist of subfloors for support topped with flooring or floor coverings. Common flooring materials include wood, stone, tile, vinyl, carpet and rugs. Proper installation is important and involves preparing a level base and adding underlayment before installing the flooring material. Each type of flooring has advantages like durability, maintenance needs, noise reduction and appearance that make some more suitable for different rooms and uses than others. Precautions like regular cleaning and protecting from moisture are needed to keep different flooring types in good condition long-term.
Gypsum board, also known as drywall or plasterboard, is a building material made of gypsum plaster pressed between two thick sheets of paper. It is used to make interior walls, ceilings, and partitions. Gypsum board provides a smooth, monolithic surface that can be decorated. To produce it, calcined gypsum is mixed with water and additives to form a slurry between the paper layers. As it dries, the gypsum recrystallizes and bonds to the paper. A false ceiling, or dropped ceiling, is a secondary ceiling hung below the main structural ceiling, creating a space to hide wiring and ductwork while allowing access. Exposed grid ceilings have visible grid systems into which panels
This document discusses bamboo as a building material, specifically for roof construction. It outlines three types of bamboo (monopodial, sympodial, climbing), and properties that make bamboo suitable for construction including being renewable, strong but light. Bamboo is mainly found in tropical and sub-tropical regions. The document then details various methods of constructing bamboo roofs, including using trusses, layering, and traditional methods using halves and whole culms. Bamboo roofs are described as being cooler, more insulating, and waterproof when properly treated and constructed.
The document discusses various earth-based building materials and techniques. It provides details on analyzing soil composition through various tests. Mud construction materials like cob, rammed earth, adobe, and stabilized mud bricks are explained. Cob involves shaping mud into egg-shaped masses and stacking them without forms. Rammed earth uses a form to compress damp soil mixtures into solid walls. Adobe involves shaping soil-straw mixtures into bricks that are sun-dried. Indigenous stabilizers like straw and plant juices can be used to improve soil properties for construction.
This document provides information on various mud construction techniques, including soil testing methods, stabilization techniques, and specific roofing methods like the Guna vault roof and Nubian dome. Some key points:
- Various field and lab tests are described to determine the composition and properties of soils for construction, including color, texture, biscuit, and sieve tests.
- Stabilization techniques can improve soil properties by adding materials like cement, straw or plant juices.
- The Guna vault roof is made from tapered burnt clay pipes socketed together in arches to form a strong, lightweight roof.
- The Nubian dome technique builds vaults and domes without centering by laying courses almost
Sand is a naturally occurring granular material composed of finely divided rock and mineral particles. The most common constituent is silica. Sand is classified based on its formation, composition, and grain size. The main natural sources are pit sand, river sand, and sea sand. Artificial sources include recycled sand and crushed stones. Good sand is clean, coarse, chemically inert, and well graded. It is used widely in construction for mortar, concrete, and plastering. The composition and properties of sand determine its suitability for different construction applications.
Sand is a naturally occurring granular material composed of finely divided mineral particles. The most common constituent is silica in the form of quartz. Sand is classified based on its formation, size, and composition. Different types of sand like pit sand, river sand, sea sand, and masonry sand are used for various construction purposes like bricks, plastering, mortar, and concrete. Properties of good sand include being clean, coarse, chemically inert, durable, and well graded with a range of particle sizes. Sand is tested for quality using sieve analysis and tests for organic impurities and clay/silt content.
The document discusses different types of mortar used in construction. It defines mortar as a mixture of a binding material, fine aggregate, and water. Common binding materials include cement and lime. Mortars are classified by their binding material, such as cement mortar, lime mortar, and mud mortar. Specialty mortars include fire resistant mortar, lightweight mortar, and chemical resistant mortar which are formulated for specific applications. The document outlines the proper mixing and application of different mortars.
This document provides an overview of common construction materials. It begins by defining building materials as materials used for structures like buildings, dams, roads, and bridges. It then discusses the historical evolution of materials from the Stone Age to the Iron Age to modern times. The document primarily focuses on natural materials like stone, sand, wood, clay and their uses in construction. It provides classifications, properties, and examples of how these materials are used.
The document discusses bricks, including their composition, manufacturing process, types, and testing. It can be summarized as:
1. Bricks are made from clay and are manufactured through processes of preparation, molding, drying, and burning. This gives them strength and durability for construction uses.
2. Good brick composition includes appropriate amounts of clay, silt, and silica without harmful ingredients like lime. The manufacturing process involves shaping the clay and firing the bricks to high temperatures.
3. Bricks are tested for qualities like strength, water absorption, and efflorescence to ensure they meet standards for construction projects. Proper testing verifies the brick quality and suitability for different building applications.
Soil is made up of minerals, small rocks, gases, water and organic matter. It consists of layers including topsoil, subsoil and bedrock. An experiment is described to identify the texture of a soil sample by measuring the percentages of sand, silt and clay particles after shaking the sample in a jar of water. The thickness of each layer is measured after particles have settled to identify the soil texture on a texture triangle diagram. Examples of farming practices like contour plowing and terrace farming are given to protect topsoil from erosion by wind and water.
This document discusses the process of manufacturing clay bricks. It begins by describing the ideal properties and composition of brick-making clay, including the optimal percentages of key constituents like alumina, silica, lime, and iron oxide. It then outlines the four main steps in brick production: preparing the clay through weathering, blending, and tempering; moulding bricks by hand or machine; air drying the moulded bricks; and firing the dried bricks in clamps or kilns. The ideal plasticity and strength of the clay for shaping is emphasized.
This document discusses the process of manufacturing bricks. It begins by describing the composition of bricks, noting that good bricks should contain 20-30% alumina, 50-60% silica, and small amounts of lime, iron oxide, and magnesia. The document then outlines the key steps in brick manufacturing: preparation of clay, moulding, drying, and burning. For moulding, it describes hand and machine methods, and for burning it explains the three stages of dehydration, oxidation, and vitrification. The document provides details on each stage of the manufacturing process.
This document discusses the process of manufacturing bricks. It begins by describing the composition of bricks, noting that good bricks should contain 20-30% alumina, 50-60% silica, and small amounts of lime, iron oxide, and magnesia. The document then outlines the key steps in brick manufacturing: preparation of clay, moulding, drying, and burning. Moulding can be done by hand or machine, drying takes 3-10 days, and burning involves dehydration, oxidation and vitrification to harden the bricks. Proper composition and manufacturing process are necessary to produce durable bricks of consistent quality.
Mortar is a mixture of binding material, fine aggregate like sand, and water that is used for masonry work, plastering and pointing. It binds together bricks, stones or concrete to form a strong, durable structure. Mortar comes in different types for various uses - cement mortar for high strength applications, lime mortar above ground, lightweight mortar with fibers, fire resistant mortar, and mud mortar for rural buildings. Sand and surkhi are added to mortar to reduce cracking and provide strength, density and color.
Soil compaction increases the density of soil through mechanical means. It is an important part of construction projects to increase load bearing capacity and prevent settlement. There are different types of compaction including vibration, impact, kneading and pressure. Proper soil compaction requires understanding soil type and moisture content, as this impacts the maximum achievable density. Density tests such as the Proctor test are used to determine if compaction specifications are met.
This document provides an overview of various civil engineering materials including timber, sand, aggregate, mortar, and concrete. It discusses the types, properties, requirements and uses of each material. Timber types include hardwood and softwood. Sand is classified as fine, medium, or coarse. Aggregate can be natural or artificial, and classified by size as fine or coarse aggregate. Mortar requirements include workability and water retention. Mortar types include cement, lime, lightweight, fire resistant, and mud mortar. Concrete uses cement, water, aggregates and sometimes admixtures to bond together with strength, durability and versatility.
CIVIL ENGINEERING CONSTRUCTIONS MATERIALS LOUIS WAYNE
This document provides information on various civil engineering materials including timber, sand, aggregate, mortar, and concrete. It discusses the types, properties, requirements and uses of each material. Timber types include hardwood and softwood. Sand is classified as fine, medium, and coarse. Aggregates can be natural or artificial, and are classified by size as fine or coarse aggregates. Mortar types include cement mortar, lime mortar, light weight mortar, fire resistant mortar, and mud mortar. Concrete types depend on mix design and include regular concrete, high strength concrete, self-consolidating concrete, and others. Each material has important applications in construction.
This document provides information on concrete, its ingredients and properties. Concrete is composed of Portland cement, water, aggregates (sand and gravel/crushed stone) and sometimes admixtures. It is mixed either by hand or machine. The cement and water form a paste that binds the aggregates together as it hardens. Concrete has high compressive strength but low tensile strength. Proper curing is required for concrete to attain its full strength. Concrete is a versatile building material with many applications.
Building mortars are mixtures used for jointing bricks, stones, and blocks. They are made by adding water to a mixture of fine aggregates like sand and a binding material such as cement, lime, or gypsum. Mortars are used in brick/stone masonry joints and plastering to bind units together, provide structure strength and durability, and form a protective weather-resistant layer between masonry courses. Common types include cement mortars, lime mortars, and clay/mud mortars.
This document provides information on mortars used for brick wall construction. It discusses the typical materials in mortar mixes including sand, cement, water and additives. It describes requirements for good mortar such as workability and strength. Different types of cement and sand are outlined. Guidelines for mixing mortar by hand or machine and transporting pre-mixed mortar are also provided.
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2. Ancient Great Mosque of Djenne in Mali
Introduction
Earth structures are largely made from soil with added materials, compressed or baked to add strength.
Soil is economical and has low environmental material.
Earth structure materials may be as simple as mud, or mud mixed with straw to make cob.
Sturdy dwellings may be also built from sod or turf.
Soil may be stabilized by the addition of lime or cement, and may be compacted into rammed earth.
Construction is faster with pre-formed adobe or mudbricks, compressed earth blocks, earthbags or fired clay bricks.
Hikma Mosque, Dandaji, Niger- Mariam Kamara
3. Soil
Soil particles include sand, silt and clay. Even a small proportion of clay affects the physical properties of the soil.
Loam is a mix of sand, silt and clay in which none predominates. Soils are given different names depending on the
relative proportions of sand, silt and clay such as "Silt Loam", "Clay Loam" and "Silty Clay". Loam construction referred
to as adobe construction when it uses unfired clay bricks, is an ancient building technology. It was used in the early
civilizations of the Mediterranean, Egypt and Mesopotamia, in the Indus, Ganges and Yellow river valleys,
in Central and South America.
It minimizes use of fossil fuels and pollution, particularly carbon dioxide, during manufacture, and creates a
comfortable living environment through the high mass and high absorption of the material. The two main technologies
are stamped or rammed earth, clay or loam, and adobe, typically using sun-dried bricks made of a mud and straw
mixture.
Ancient structures of Indus Valley Civilization
4. Soil Composition
Source:
• Mud required for building can be from the plot itself.
• The soil is collected after depth of 60cms only.
• As the top layer is full of organic matter, it isn’t used.
• Below it is sand and clay which are dug out in heaps.
• Do not use hard rock.
• Top should be replaced after excavating.
Soil Type:
• Gravel: Small pieces of stone varying from the size of a
pea to that of an egg. Alone of no use for mud wall
building as the tiny lumps of stone cannot bind together.
• Sand: Similar small pieces of stone (usually quartz),
which are small but each grain, is visible to the eye.
Alone is of no use but if mixed with clay, it is the ideal
mud wall building soil.
• Silt: The same as sand except that it is so fine that you
cannot see individual grains. By itself is also no good for
building walls. It will hold together but is not strong.
Furthermore, it will not compact so it is also of no use
for pressed blocks or rammed earthwork.
• Clay: Soils that stick when wet – but very hard when
completely dry. Can be rammed or compressed but in
drying out they often shrink. During the monsoon they
get damp and expand again and crack form.
• Organic Soil: Soil mainly composed of rotting,
decomposing organic matters such as leaves, plants
and vegetable matter. It is spongy when wet, usually
smells of decaying matter, is dark in color and usually
damp. Are mainly useless for wall building.
5. Soil Stabilizers
There are two kinds of tests:
Field tests
• Colour tests
• Touch and smell test
• Biscuit test
• Hand wash test
• Cigar test
• Adhesion test
Lab tests
• Sieve test
• Sedimentation
test
When the available soil is not suitable enough for construction then the soil can be used by manipulating its
composition by adding suitable stabilizers.
Stabilizing enhances the given property of the soil type.
Increase Tensile and Shear strength.
Reduce shrinkage.
Indigenous Stabilizers-
• Straw
• Plant Juices
• Gum Arabic
• Sugar Or Molasses
• Cow Dung
• Animal Urine
• Tannic Acid
• Oil
Soil
Tests
6. Soil Tests
Colour test:
• Deep yellow, orange and red, ranging to deep
browns indicate iron content which is good as
building mud.
• Greyish or dull brown, ranging to dirty white
indicates more clay.
• Dull brown with slightly greenish colour indicates
organic soil.
Touch and Smell Test:
Procedure-
• Rub small quantity of dry soil on palm to feel its texture.
• Moisten the soil and rub again.
Interpretation-
• Soil that feels course when dry but sticky when wet
contains lumps of clay.
• Soil that feels course when dry but gritty when wet
contains sand.
• Soil that feels course when dry but little gritty when wet
contains silt.
• If the wet soil gives off musty smell then it contains
organic matter.
7. Soil Tests
Biscuit Test:
Procedure-
• Make a smooth paste from the soil removing all
gravel.
• Mould it into a biscuit of 3cm diameter and 1cm
height.
• Leave it to dry and observe for shrinkages or
cracks.
• Break the biscuit to noting how hard it is.
Interpretation-
• If biscuit cracks or leaves gap from the mould then it
contains more clay.
• If its very hard to break then soil contains more clay.
• If it breaks easily and can be crumpled between
finger then it has good sand-clay proportion.
• If breaks and reduce to powder then the soil has
more sand or silt.
Handwash Test:
Procedure-
• Play with wet soil till your hands get thoroughly dirty.
• Wash your hands to see how difficult it is to clean.
Interpretation-
• If hands get cleaned quickly, then soil contains more
sand.
• If it takes little time to clean and feels like flour then
soil contains more silt.
• If it feels soapy or slippery and takes time to clean
then soil contains more clay.
8. Soil Tests
Cigar Test:
Procedure-
• Make a smooth paste from the soil removing all
gravel.
• Roll it on palm to make a cigar.
• Slowly push it outside your palm.
• Measure the length at which it breaks.
Interpretation-
• Length< 5cm – too much sand.
• Length> 15cm – too much clay.
• Length between 5cm to 15cm – good mixture of
sand and clay.
Adhesion Test:
Procedure-
• Make ball out of wet soil.
• Pierce a knife into it and remove.
• Observer the knife after removing.
Interpretation-
• If little soil sticks on the knife then it has more silt.
• If lot of soil sticks on the knife then it has more clay.
• If the knife is clean after removal than the soil has
more sand.
9. Soil Tests
Sieve Test:
Procedure-
• Pass soil from series of standard sieves set on top
of on another with finest sieve at bottom.
• Observe the soil collected in each sieve.
Interpretation-
• Silt will be collected in lowermost sieve.
• Gravels will be collected on top.
• Sand and lumps of clay will be collected in
intermediate sieves
Sedimentation Test:
Procedure-
• Take a transparent cylindrical bottle or jar of 1Lt.
Capacity.
• Fill it with ¼ soil and ¾ water.
• Shake well and allow it to settle for 30 min.
Interpretation-
• Coarse gravels will be settled at bottom, followed by
sand, silt and clay on top.
• Measuring the layers will give us the approximate
proportions of each content.
10. Ancient Great Mosque of Djenne in Mali
Mud
Coursed mud construction is one of the oldest approaches to building walls. Moist mud is formed by hand to make the
base of a wall, and allowed to dry. More mud is added and allowed to dry to form successive courses until the wall is
complete. With puddled mud, a hand-made mud form is filled with wetter mud and allowed to dry.
Each course is about 460 to 610 mm thick and 460 to 610 mm high. Typically used for garden walls but not for house
construction because of concern about the strength of walls made in this way.
Another technique is to build a wood-frame house and to infill it with mud to provide insulation.
Hikma Mosque, Dandaji, Niger- Mariam Kamara
11. Cob Construction
Cob is a natural building material that includes clay, sand or small stones and an organic material such as straw.
Cob walls are usually built up in courses, have no mortar joints and need 30% or more clay in the soil lending itself to
organic shapes like curved walls, arches, niches, etc.
Cob can be used as in-fill in post-and-beam buildings for load bearing walls, and can bear up to two stories.
It is plastered inside and out with a mix of lime, soil and sand.
Cob is fireproof, and its thermal mass helps stabilize indoor temperatures. Due to its porous nature, cob is quite
resistant to weathering and can withstand long periods of rain without weakening.
Construction Process-
• With only a little water to form a very stiff mud, a large lump is molded into the shape of a huge elongated egg.
• The usual size is anything between 30 to 40-cm long and about 15-cm in dia.
• A row of these cobs of mud are laid neatly side-by-side somewhat pressed together.
• Then another row of cobs is laid on top.
• When three or four courses have been laid, the sides are smoothed over so that the holes and cracks disappear.
• Openings for doors, and windows can be solved by using temporary vertical planks or shuttering.
• Another very simple shuttering for openings is to use empty kerosene tins.
12. Adobe Construction
Preparing soil mix
Charging the forms
Kneading and leveling the blocks
Lilting the forms from freshly made
blocks.
Washing forms for next
cycle.
Mix soil with water in a sump
Transport prepared soil mix to multi-
forms.
Unstabilized block is turned on edge to dry
Blocks stacked after a month of curing.
13. Adobe Construction
Mudbricks or Adobe bricks are preformed modular masonry units of sun-dried mud
Construction with bricks avoids the delays while each course of puddled mud dries.
Adobe bricks are traditionally made from sand and clay mixed with water to a plastic consistency, with straw or grass
as a binder.
The mud is prepared, placed in wooden forms, tamped and leveled, and then turned out of the mold to dry for several
days. The bricks are then stood on end to air-cure for a month or more.
Since adobe surfaces are fragile, coatings are used to protect them. These coatings, periodically renewed, have
included mud plaster, lime plaster, whitewash or stucco. Since adobe surfaces are fragile, coatings are used to protect
them. These coatings, periodically renewed, have included mud plaster, lime plaster, whitewash or stucco.
made by laying the bricks with mud mortar, which swells and shrinks at the same rate as the bricks when wetted or
dried, heated or cooled.
Adobe structures are extremely durable and the material has a high thermal mass. However, structures made of adobe
are susceptible to earthquake damage if they lack proper reinforcement.
Two typical sizes of blocks that have been used are 5x10x20 inches (weight about 55 pounds) and 4x12x18 inches
(weight about 50 pounds).
Construction Process-
• Blocks shall be kept covered with air tight polythene sheets for first 48 hrs with relative humidity up to 100.
• Polythene sheets shall be removed after 48 hrs and the blocks shall be kept in shaded area like having enough air
circulation.
• Sprinkle water over blocks daily, as many times needed, during 28 days.
• Write date of production on block corner.
• Cover stacks top with coconut leaves or any other cover to avoid direct sunlight.
• Principle is that blocks shall not dry for 4weeks.
• Adobe brick walls require wood lintels and sills that serve as the head and base of the frame.
14. Wattle and Daub
Wattle and daub is an old building technique in which vines or smaller sticks are interwoven between upright poles, or
the timber forms a woven lattice and is plastered with earth mixture that usually consists of wet soil, clay, sand, animal
dung, and straw.
Wattle and daub is still found as the panels in timber-framed buildings. Generally the walls are not structural, and in
interior use the technique in the developed world was replaced by lath and plaster, and then by gypsum wallboard.
The wall can range from 150 to 200 mm in thickness and this makes the technique attractive for dividing interior
spaces with light walls.
This technique is also suited for a more experimental approach to Earth building. The latticework can have nearly any
shape. Together with the earth mix very firm "objects" up to 2 meters high can be built.
Construction Process-
• There bamboo and cane frame structure that supports the roof.
• Mud is plastered over this mesh of bamboo cane and straws
• Due to excessive rainfall the Wattle and Daub structures gets washed off.
• However, the mesh of cane or split bamboo remains intact and after the heavy rain is over the mud is plastered on
again.
15. Earthbag Construction
Earthbag construction is a natural building technique that has
evolved from historic military construction techniques for bunkers.
Local subsoil of almost any composition can be used, although an
adobe mix would be preferable.
The soil is moistened so it will compact into a stable structure when
packed into woven polypropylene or burlap sacks or tubes. Plastic
mesh is sometimes used. Polypropylene (pp) sacks are most
common, since they are durable when covered, cheap, and widely
available.
Earthbags may be used to make dome-shaped or vertical wall
buildings.
With soil stabilization they may also be used for retaining walls.
The structures built using this technique also employ vaults and
corbelled arches as well as domes to create sturdy shells.
Construction Process-
• Rows of woven bags are filled with available inorganic material.
• After the foundation is laid, each successive layer will have one
or more strands of barbed wire placed on top.
• The weight of this earth-filled bag pushes down on the barbed
wire strands, locking the bag in place on the row below.
• The bags are laid in courses, with barbed wire between each
course to prevent slipping. Each course is tamped after it is laid.
• The structure in pp bags is similar to adobe but more flexible.
• With mesh tubing the structure is like rammed earth.
• Barbed wires are placed between each layer and serve as both
reinforcements as well as mortar.
16. Shaped Earth Construction
Similar to how a potter shapes mud into pots, the shaped earth
technique directly shapes the plastic earth without a mold or formwork.
The three factors that play a key role in this method are the quality of the
soil, its preparation, and water consistency.
A great advantage of this method is the minimal usage of tools as well as
the labor force.
Shaped earth allows fluidity in architecture to a great extent and the few
limitations to this technique are understanding the soil quality as well as
controlling shrinkage once the structure dries.
17. Mortar
Stabilized Earth Mortar is best suited for masonry using
mud blocks.
Mud mortar shall be stabilized 1.5 times more than the
mud blocks.
Add course sand (0.2 to 2mm) to reduce shrinkage.
Prepare plastic mix rather than dry mix.
Ideal mix = soil suitable for mud block + 40% to 50% of
sand by weight + 7.5% cement.
Test the mortar before use
Procedure-
• Start with a mix of 1 vol. Cement + 6 vol. Soil + 6 vol.
Sand.
• Apply a layer of 1cm mortar on a block soaked in
water and let it dray in shade.
• Observe the mortar for cracks.
Interpretation-
• If cracks appear, reduce the soil and increase the
sand proportion.
1 cement + 5 soil + 7 sand.
• If mortar is too crumbly, increase the soil and reduce
the sand proportion.
1 cement + 7 soil + 5 sand
Treatment
1.Termites-
• Mud is the natural home of termites precautions have
to be taken to prevent their moving up into the walls
and eating wooden frames etc.
• A one-inch thick layer of mortar (one part of cement
to 3-parts of sand) can be laid all over the top of the
basement wall before building the mud walls above it.
This is helpful in keeping out both termites and damp.
• Even better is to construct an apron of burnt brick or
stone (or it can be rammed earth) all round the
building (to prevent damage to the walls by splashing,
of rain water) and this too can be plastered over with
a rich cement mortar.
• Any thin sheet metal may be laid over the basement
wall with a 3-inch downward projection before starting
to build the superstructure mud wall above. This
is expensive but very effective.
2.Water-
• The best way of protecting any wall from either rain or
sun is to have a good big overhang to your roof.
• The sloping, or pitched roof is better because the
walls need not be so high as for a flat roofed house.
• Provide trenches round the house to receive dripping
water and drain it away.
18. Compressed Earth
Brick
Compressed earth blocks (CEB) are usually made from subsoil compressed in a hand-operated or powered machine.
Manual machines can be a cost-effective solution for making uniform building blocks, while the more complex and
expensive motorized machines are less likely to be appropriate.
Although labor-intensive, CEB construction avoids the cost of buying and transporting materials.
Block-making machines may form blocks that have interlocking shapes to reduce the requirement for mortar.
The block may have holes or grooves so rods such as bamboo can be inserted to improve earthquake resistance.
Suitable earth must be used, with enough clay to hold the block together and resist erosion.
When the block has been made from stabilized earth, which contains cement, the concrete must be given perhaps three
weeks to cure. During this time the blocks should be stacked and kept from drying out by sprinkling water over them.
The blocks can be made raw or stabilized with cement or lime.
The addition of stabilizers allowed construction of higher and thinner walls that have great compressive strength and
water resistance.
19. Clay Roof Tiles
• Burnt clay tile roofs are only used for sloping roofs
between about 20° and 50° inclination of rafter, and
the tile shapes differ for each range of slope. The
rafter pitch is always steeper than the tile pitch.
• Clay tile production is a traditional village craft but
uniform shapes and qualities are difficult to achieve.
Mechanized plants produce good quality tiles, but at
higher costs or mobile presses with interchangeable
moulds for different tile shapes.
• Depending on the clay type and production method, a
major problem of clay tiles is the immense loss (in
India about 35 %) due to cracking and breakage. A
good remedy has been found in the use of ammonium
chloride as an admixture varying between 0.1 and 1.0
%, depending on the type of soil.
• Clay tiles are heavy, requiring a strong substructure
and closely spaced battens. Therefore, tile designs (eg
Mangalore tiles), which require wider spacing of
battens, are lighter and more economical. But
generally, the weight of the roof and loose connection
of tiles, make them susceptible to destruction in
earthquakes.
• Good quality tiles with good overlaps are perfectly
waterproof. The red colour, however, tends to absorb
solar radiation, so theta suspended ceiling may be
needed for indoor comfort.