This document provides details of a proposed retaining wall, including dimensions, material properties, and calculations of forces and moments acting on the wall according to Eurocode 7. Key details include a propped cantilever retaining wall with a stem height of 5.5m, retaining loose gravel soil up to 5m high. Calculations show total vertical and horizontal forces of 778.7kN/m and 339.2kN/m respectively. The maximum bearing pressure on the wall foundation is calculated to be 0kPa with no eccentricity of loading.
This document provides a raft foundation design analysis and design in accordance with BS8110 Part 1-1997. It includes definitions of the soil properties, raft geometry, material properties, and loading. It then performs checks for bearing capacity, bending, shear, and deflection for the internal slab and edge beams. Reinforcement is designed for the slab and edge beams to satisfy the various design checks.
This document provides details of a pad footing analysis and design according to BS8110-1:1997. It includes specifications of the pad footing, column, soil properties, loads, and calculations to check stability, reactions, pressures, and moments. The analysis determines that the maximum base pressure is less than the allowable bearing pressure and all other checks pass requirements.
Pocket reinforced masonry Retaining Wall Analysis & Design, In accordance with EN1997-1:2004 incorporating Corrigendum dated February 2009 and the recommended values
Sachpazis: Strip Foundation Analysis and Design example (EN1997-1:2004)Dr.Costas Sachpazis
Strip Foundation Analysis and Design example, in accordance with EN1997-1:2004 incorporating Corrigendum dated February 2009 and the recommended values
This document provides an analysis and design of a gabion retaining wall according to BS8002:1994. It includes the geometry of the 3-tier gabion wall, calculations of forces, and checks for overturning stability, sliding stability, and bearing pressure. The analysis finds the wall design satisfies minimum safety factors of 2.0 for overturning, 1.5 for sliding, and the bearing pressure is less than the allowable soil pressure. A separate analysis is provided for stability between the 2nd and 3rd tiers.
This document provides a raft foundation design analysis and design in accordance with BS8110 Part 1-1997. It includes definitions of the soil properties, raft geometry, material properties, and loading. It then performs checks for bearing capacity, bending, shear, and deflection for the internal slab and edge beams. Reinforcement is designed for the slab and edge beams to satisfy the various design checks.
This document provides details of a pad footing analysis and design according to BS8110-1:1997. It includes specifications of the pad footing, column, soil properties, loads, and calculations to check stability, reactions, pressures, and moments. The analysis determines that the maximum base pressure is less than the allowable bearing pressure and all other checks pass requirements.
Pocket reinforced masonry Retaining Wall Analysis & Design, In accordance with EN1997-1:2004 incorporating Corrigendum dated February 2009 and the recommended values
Sachpazis: Strip Foundation Analysis and Design example (EN1997-1:2004)Dr.Costas Sachpazis
Strip Foundation Analysis and Design example, in accordance with EN1997-1:2004 incorporating Corrigendum dated February 2009 and the recommended values
This document provides an analysis and design of a gabion retaining wall according to BS8002:1994. It includes the geometry of the 3-tier gabion wall, calculations of forces, and checks for overturning stability, sliding stability, and bearing pressure. The analysis finds the wall design satisfies minimum safety factors of 2.0 for overturning, 1.5 for sliding, and the bearing pressure is less than the allowable soil pressure. A separate analysis is provided for stability between the 2nd and 3rd tiers.
This document provides details of the analysis and design of a flat slab foundation according to BS8110:Part 1:1997. It includes the slab geometry, material properties, loading details, and calculations for the design of reinforcement in the sagging and hogging bending moments for internal and edge spans in the x-direction. Reinforcement areas are calculated and reinforcement arrangements are selected to satisfy design requirements. Deflection checks are also performed.
Sachpazis_Trapezoid Foundation Analysis & Design. Calculation according to EN...Dr.Costas Sachpazis
The document summarizes the calculation of foundations and reinforcement for a trapezoidal pad foundation supporting a column. Soil properties, foundation geometry, loads, and limit states are defined. Calculations are presented for bearing capacity, sliding resistance, uplift, bending moments, required reinforcement, and punching shear. The foundation dimensions were optimized, resulting in a wider and longer foundation with increased depths. All limit states checks passed requirements.
Sachpazis_CHS Column base plate to EC3 1993-1 with NA CENDr.Costas Sachpazis
GEODOMISI Ltd. is a civil and geotechnical engineering consulting company specializing in structural engineering, soil mechanics, rock mechanics, foundation engineering, and retaining structures. The document provides details of a column base plate analysis and design for a CHS column in accordance with Eurocode standards, including the column and base plate dimensions and materials, applied loads, concrete foundation details, and calculations checking the bearing capacity, frictional resistance, and weld strength. The analysis confirms the base plate design is adequate to resist the applied loads with sufficient bearing area, frictional resistance, and weld strength.
Sachpazis RC Slab Analysis and Design in accordance with EN 1992 1-1 2004-Two...Dr.Costas Sachpazis
- GEODOMISI Ltd is a civil and geotechnical engineering consulting company located in Greece.
- The document provides details on the analysis and design of a reinforced concrete slab according to Eurocode standards, including slab dimensions, material properties, loading, and reinforcement design calculations at various locations.
- The reinforcement designs at midspan and supports in both span directions meet code requirements for area of steel and bar spacing.
Sachpazis masonry column with eccentric vertical and wind loading in accordan...Dr.Costas Sachpazis
This document summarizes the analysis and design of a clay masonry column according to Eurocode standards. It provides details of the column geometry, material properties, loads, and calculations to check the column's capacity against bending moments. The column passes all checks for strength and stability.
Sachpazis Cantilever Retaining Wall, In accordance to IBC 2012 and ASCE 7-10 ...Dr.Costas Sachpazis
The document provides design details and load calculations for a cantilever retaining wall. It includes material properties, wall geometry, reinforcement details, load combinations, soil parameters, and check summaries. Stability, toe, heel, stem, and reinforcement checks are presented to verify design requirements are met based on the 2012 International Building Code and ASCE 7-10 standards.
Masonry Wall Panel Analysis & Design, In accordance with EN1996-1-1:2005Dr.Costas Sachpazis
Masonry Wall Panel Analysis & Design, In accordance with EN1996-1-1:2005 + A1:2012 incorporating Corrigenda
February 2006 and July 2009 and the UK national annex.
Sachpazis verification of the ultimate punching shear resistance to ec2 1992 ...Dr.Costas Sachpazis
This document verifies the ultimate punching shear resistance of a structural element according to Eurocode 2. It contains calculations of punching shear stress and resistance for different zones, including the zone adjacent to the support, zone with punching shear reinforcement, and external zone. It checks various design values and requirements regarding punching shear reinforcement spacing, perimeter dimensions, and stress versus resistance criteria. The goal is to verify the punching shear capacity based on the code-specified design method and limit states.
Sachpazis: Wind loading to EN 1991 1-4- for a hipped roof exampleDr.Costas Sachpazis
This document provides an example calculation of wind loading on a hipped roof structure according to Eurocode 1991-1-4. It includes details of the building geometry, terrain conditions, and calculation of peak velocity pressures and net pressures on different zones of the roof and walls. The results are tabulated forces on the roof and walls for two different wind directions. The overall net windward force on the structure is also calculated considering lack of correlation between windward and leeward pressures.
1. This document discusses bearing capacity of shallow foundations, including definitions of ultimate, net ultimate, net safe, and gross safe bearing capacities.
2. It covers Terzaghi's bearing capacity analysis and equations, incorporating factors like soil type, shape of foundation, and water table level.
3. Settlement of foundations is also addressed, distinguishing between immediate elastic settlement and consolidation settlement over time. Methods for estimating settlement in cohesive and cohesionless soils are presented.
This document describes the analysis and design of a reinforced masonry retaining wall. It provides details of the wall geometry, soil properties, and loading conditions. Calculations are shown for the wall dimensions, force distributions, and safety checks against sliding and overturning. The factor of safety against sliding is calculated to be 1.738, indicating the wall design is sufficient.
- There are four main methods to measure the load carrying capacity of piles: static methods, dynamic formulas, in-situ penetration tests, and pile load tests.
- The ultimate load capacity (Qu) of an individual pile or pile group equals the sum of the point resistance (Qp) at the pile tip and the shaft resistance (Qs) developed along the pile shaft through friction between the soil and pile.
- Meyerhof's method is commonly used to calculate Qp in sand based on the effective vertical pressure at the pile tip multiplied by the bearing capacity factor Nq.
Sachpazis: Wind Loading Analysis & Design for a Hipped Roof Example According...Dr.Costas Sachpazis
This document provides calculations for wind loading analysis and design of a hipped roof building according to Eurocode standards. It includes details of the building geometry, wind speed calculations, velocity pressure calculations for different zones of the roof and walls, and resulting net forces and pressures on the structure for two different wind directions. The summary provides essential information on the purpose, methodology, and key results of the wind loading analysis.
This document provides details of the analysis and design of a flat slab foundation according to BS8110:Part 1:1997. It includes the slab geometry, material properties, loading details, and calculations for the design of reinforcement in the sagging and hogging bending moments for internal and edge spans in the x-direction. Reinforcement areas are calculated and reinforcement arrangements are selected to satisfy design requirements. Deflection checks are also performed.
Sachpazis_Trapezoid Foundation Analysis & Design. Calculation according to EN...Dr.Costas Sachpazis
The document summarizes the calculation of foundations and reinforcement for a trapezoidal pad foundation supporting a column. Soil properties, foundation geometry, loads, and limit states are defined. Calculations are presented for bearing capacity, sliding resistance, uplift, bending moments, required reinforcement, and punching shear. The foundation dimensions were optimized, resulting in a wider and longer foundation with increased depths. All limit states checks passed requirements.
Sachpazis_CHS Column base plate to EC3 1993-1 with NA CENDr.Costas Sachpazis
GEODOMISI Ltd. is a civil and geotechnical engineering consulting company specializing in structural engineering, soil mechanics, rock mechanics, foundation engineering, and retaining structures. The document provides details of a column base plate analysis and design for a CHS column in accordance with Eurocode standards, including the column and base plate dimensions and materials, applied loads, concrete foundation details, and calculations checking the bearing capacity, frictional resistance, and weld strength. The analysis confirms the base plate design is adequate to resist the applied loads with sufficient bearing area, frictional resistance, and weld strength.
Sachpazis RC Slab Analysis and Design in accordance with EN 1992 1-1 2004-Two...Dr.Costas Sachpazis
- GEODOMISI Ltd is a civil and geotechnical engineering consulting company located in Greece.
- The document provides details on the analysis and design of a reinforced concrete slab according to Eurocode standards, including slab dimensions, material properties, loading, and reinforcement design calculations at various locations.
- The reinforcement designs at midspan and supports in both span directions meet code requirements for area of steel and bar spacing.
Sachpazis masonry column with eccentric vertical and wind loading in accordan...Dr.Costas Sachpazis
This document summarizes the analysis and design of a clay masonry column according to Eurocode standards. It provides details of the column geometry, material properties, loads, and calculations to check the column's capacity against bending moments. The column passes all checks for strength and stability.
Sachpazis Cantilever Retaining Wall, In accordance to IBC 2012 and ASCE 7-10 ...Dr.Costas Sachpazis
The document provides design details and load calculations for a cantilever retaining wall. It includes material properties, wall geometry, reinforcement details, load combinations, soil parameters, and check summaries. Stability, toe, heel, stem, and reinforcement checks are presented to verify design requirements are met based on the 2012 International Building Code and ASCE 7-10 standards.
Masonry Wall Panel Analysis & Design, In accordance with EN1996-1-1:2005Dr.Costas Sachpazis
Masonry Wall Panel Analysis & Design, In accordance with EN1996-1-1:2005 + A1:2012 incorporating Corrigenda
February 2006 and July 2009 and the UK national annex.
Sachpazis verification of the ultimate punching shear resistance to ec2 1992 ...Dr.Costas Sachpazis
This document verifies the ultimate punching shear resistance of a structural element according to Eurocode 2. It contains calculations of punching shear stress and resistance for different zones, including the zone adjacent to the support, zone with punching shear reinforcement, and external zone. It checks various design values and requirements regarding punching shear reinforcement spacing, perimeter dimensions, and stress versus resistance criteria. The goal is to verify the punching shear capacity based on the code-specified design method and limit states.
Sachpazis: Wind loading to EN 1991 1-4- for a hipped roof exampleDr.Costas Sachpazis
This document provides an example calculation of wind loading on a hipped roof structure according to Eurocode 1991-1-4. It includes details of the building geometry, terrain conditions, and calculation of peak velocity pressures and net pressures on different zones of the roof and walls. The results are tabulated forces on the roof and walls for two different wind directions. The overall net windward force on the structure is also calculated considering lack of correlation between windward and leeward pressures.
1. This document discusses bearing capacity of shallow foundations, including definitions of ultimate, net ultimate, net safe, and gross safe bearing capacities.
2. It covers Terzaghi's bearing capacity analysis and equations, incorporating factors like soil type, shape of foundation, and water table level.
3. Settlement of foundations is also addressed, distinguishing between immediate elastic settlement and consolidation settlement over time. Methods for estimating settlement in cohesive and cohesionless soils are presented.
This document describes the analysis and design of a reinforced masonry retaining wall. It provides details of the wall geometry, soil properties, and loading conditions. Calculations are shown for the wall dimensions, force distributions, and safety checks against sliding and overturning. The factor of safety against sliding is calculated to be 1.738, indicating the wall design is sufficient.
- There are four main methods to measure the load carrying capacity of piles: static methods, dynamic formulas, in-situ penetration tests, and pile load tests.
- The ultimate load capacity (Qu) of an individual pile or pile group equals the sum of the point resistance (Qp) at the pile tip and the shaft resistance (Qs) developed along the pile shaft through friction between the soil and pile.
- Meyerhof's method is commonly used to calculate Qp in sand based on the effective vertical pressure at the pile tip multiplied by the bearing capacity factor Nq.
Sachpazis: Wind Loading Analysis & Design for a Hipped Roof Example According...Dr.Costas Sachpazis
This document provides calculations for wind loading analysis and design of a hipped roof building according to Eurocode standards. It includes details of the building geometry, wind speed calculations, velocity pressure calculations for different zones of the roof and walls, and resulting net forces and pressures on the structure for two different wind directions. The summary provides essential information on the purpose, methodology, and key results of the wind loading analysis.
Masonry column with eccentric vertical loading Analysis & Design, in accordance with EN1996-1-1:2005 incorporating corrigenda February 2006 and July 2009 and the recommended values.
Sachpazis: Raft Foundation Analysis and Design for a two Storey House Project...Dr.Costas Sachpazis
This document provides an analysis and design of a raft foundation for a two-story house project. It includes definitions of the soil properties, raft slab geometry, reinforcement, and other structural elements. Calculations are shown for checks of internal slab bearing pressure, bending moments, shear forces, and reinforcement requirements in accordance with relevant code standards. The analysis confirms that the applied bearing pressure is less than the allowable soil pressure and that the provided reinforcement is adequate.
Sachpazis: Reinforced Concrete Beam Analysis & Design Example (EN1992-1-3)Dr.Costas Sachpazis
This document provides details for the analysis and design of a reinforced concrete beam according to Eurocode 2 (EN1992-1). It includes the beam geometry, material properties, applied loads and load combinations, analysis results for shear and bending moment, and design checks for flexure, shear, and crack control. The beam has three spans supported by A, B, and C and is designed as a rectangular section with 4 top and 2 bottom bars. Design checks are provided for the critical cross sections at supports A and the maximum shear location.
Sachpazis Foundation Pad with Two Columns Analysis & Design According to EC2 ...Dr.Costas Sachpazis
This document provides analysis and design calculations for the foundation of a pad supporting two columns according to Eurocode standards. It includes details of the foundation geometry and applied loads, as well as soil properties and calculations of bearing capacity, settlement, sliding resistance, and overturning to check if code requirements are satisfied. Diagrams and input parameters are provided over 13 pages of calculations and output.
Sachpazis: Masonry wall panel design example (EN1996 1-1-2005)Dr.Costas Sachpazis
This document summarizes the design of an unreinforced masonry wall panel according to EN1996-1-1:2005. It provides details of the wall geometry, material properties, loads, and design calculations for strength and serviceability limit states. The calculations show the wall satisfies the strength and serviceability requirements for vertical loading and lateral wind loading according to the code.
The document describes an experimental study comparing the ultimate load capacity of soil nailing walls with horizontal nails versus inclined nails in cohesionless soil. The study involves constructing small-scale soil nailing walls in a laboratory tank using steel bars as nails in poorly graded sand at 50% relative density. Nail inclination angles of 10 and 15 degrees will be tested and compared to horizontal nailing (0 degrees). The length-to-height ratio of nails will also be varied. Maximum load will be measured at failure. Analytical calculations of factor of safety for soil nailed walls will also be performed and compared to experimental results. The goal is to evaluate how nail inclination and length-to-height ratio affect ultimate load capacity.
This document describes the stages of construction for a cantilever pile retaining wall. Stage 1 involves excavating to a depth of 5 meters on one side of the wall. Soil properties, borehole data, wall and surcharge details are provided. Calculations are presented for earth pressures on the wall at various stages, structural forces, and durability. Diagrams show the wall configuration and results of analyses.
OPTIMUM DESIGN FOR HIGHWAY EMBANKMENT WITH STONE COLUMNIAEME Publication
In this paper discusses how to design the highway embankment with an optimum process to
get a minimum area of the highway embankment to reduce the cost of construction, and the
problems of soft clay soil in southern of Iraq when construction highway embankment as low
bearing capacity and excessive settlement and the way to treat it.At beginning a model of the
high way embankment without improving of soft clay soil for height of highway embankments
(H=2m and H=3m) was built to note the problems which will be faced when construction of
highway embankment in the future. When the height of embankment is (H=2m) the excessive
settlement appears but when the height of embankment is (H=3m) the low bearing capacity as
well as the excessive settlement will appear. To avoid these problems, the soft clay soil will be
improved by using stone columns and design the stone columns also with optimum process to
get minimum area of stone columns that can carry the applied load without any problem like
low bearing capacity or excessive settlement with lowest cost. When the stone columns are
used to improve the soft clay soil, it can note reduce in settlement by (99%) for height of
highway embankment (H=2m), and increase in bearing capacity to (15%) for height of
highway embankment (H=3m) for certain diameter as minimum increase can carry the load
applied on foundation. The highway embankment with stone column modeling with ANSYS
software program and this program very useful to help to find optimum design by optimization
tool, and use geo slope program to find slope stability for highway embankment by Bishop’s
method.
This document provides an overview of gravity and seismic geophysical exploration methods. It begins with introductions to gravity, its units of measurement, and factors that cause gravity variations. It then discusses gravity data acquisition, processing steps like tidal and elevation corrections to derive anomaly maps, and interpretation. For seismic exploration, it describes data acquisition using common midpoint gathers and factors like fold, followed by processing steps like normal moveout correction and stacking to improve signal-to-noise ratio and imaging resolutions. It concludes with discussions on filtering, migration, and how these improve subsurface representations.
This document discusses soil compaction. It defines compaction as mechanically densifying soil to reduce void ratio, typically when soil is placed or re-applied for construction. Compaction increases soil strength and reduces compressibility and permeability. The standard proctor and modified proctor tests are described as laboratory methods to evaluate maximum dry density and optimum moisture content for different compactive efforts. Compaction works best within an optimal moisture range, as water lubricates particles for closer packing but excess water inhibits compaction.
The document summarizes the design of a surface water drain. It provides details of the design flow rate, length and fall of the drain. Using the Chezy, Escritt and Colebrook-White equations, it calculates the minimum pipe diameter as 900mm to accommodate the design flow rate of 5 cubic meters per second with a flow velocity greater than 0.75 meters per second.
The design of earth-retaining structures - Lecture 2Chris Bridges
This document provides an outline and overview of key concepts for the design of earth-retaining structures, including:
- Lateral earth pressures depend on the wall geometry, soil properties, and groundwater conditions. Different earth pressure coefficients (Ka, Kp, Ko) are used to calculate active, passive, and at-rest pressures.
- Proper characterization of the soil properties like unit weight, shear strength, compressibility, and wall friction are needed for analysis.
- Common types of gravity walls include cantilever walls and anchored walls. Wall geometry and surcharges from nearby structures influence the design.
- Analyses consider bearing capacity, sliding resistance, and overturning of the wall due to
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Seismic Hazard Assessment Software in Python by Prof. Dr. Costas SachpazisDr.Costas Sachpazis
This simple Python software is designed to assist Civil and Geotechnical Engineers in performing site-specific seismic hazard assessments. The program calculates the seismic response spectrum based on user-provided geotechnical and seismic parameters, generating a comprehensive technical report that includes the response spectrum data and figures. The analysis adheres to Eurocode 8 and the Greek Annex, ensuring compliance with international standards for earthquake-resistant design.
Structural Analysis and Design of Foundations: A Comprehensive Handbook for S...Dr.Costas Sachpazis
Structural Analysis and Design of Foundations: A Comprehensive Handbook for Students and Professionals.
Unlock the potential of foundation design with Dr. Costas Sachpazis’s enlightening handbook, a meticulously crafted guide poised to become an indispensable resource for both budding and seasoned civil engineers. This comprehensive manual illuminates the theoretical and practical aspects of structural analysis and design across various types of foundations and retaining walls.
Within these pages, Dr. Sachpazis distills complex engineering principles into digestible, step-by-step processes, enhanced by detailed diagrams, case studies, and real-world examples that bridge the gap between academic study and professional application. From soil mechanics and load calculations to innovative design techniques and sustainability considerations, this book covers a vast landscape of structural engineering.
Key Features:
• In-Depth Analysis and Design: Explore thorough explanations of both shallow and deep foundation designs, supported by case studies that demonstrate their practical implementations.
• Practical Guides: Benefit from detailed guides on site investigation, bearing capacity calculations, and settlement analysis, ensuring designs are both robust and reliable.
• Innovative Techniques: Discover the latest advancements in foundation technology and retaining wall design, preparing you for future trends in civil engineering.
• Educational Tools: Utilize this handbook as an educational tool, perfect for both classroom learning and professional development.
Whether you're a student eager to learn the fundamentals or a professional seeking to deepen your expertise, Dr. Sachpazis’s handbook is designed to support and inspire excellence in the field of structural engineering. Embrace this opportunity to enhance your skills and contribute to building safer, more efficient structures.
Sheet Pile Wall Design and Construction: A Practical Guide for Civil Engineer...Dr.Costas Sachpazis
Sheet Pile Wall Design and Construction: A Practical Guide for Civil Engineers. By Dr. Costas Sachpazis.
A Technical Report provides information on Geotechnical Exploration and testing procedures, analysis techniques, allowable criteria, design procedures, and construction consideration for the selection, design, and installation of sheet pile walls.
"Sheet Pile Wall Design and Construction: A Practical Guide for Civil Engineers" by Dr. Costas Sachpazis provides an in-depth look into the engineering, design, and construction of sheet pile walls. The book details geotechnical exploration, testing procedures, and analysis techniques essential for determining soil properties and stability under various conditions, including seismic activity. It also covers the impact of groundwater on wall design and offers methods for controlling it during construction. Practical considerations for confined space work and the use of emerging technologies in sheet pile construction are discussed. The guide serves as a comprehensive resource for civil engineers aiming to enhance their expertise in creating durable and effective sheet pile wall solutions for complex engineering projects.
Sachpazis Costas: Geotechnical Engineering: A student's Perspective IntroductionDr.Costas Sachpazis
Geotechnical Engineering: A Student's Perspective
By Dr. Costas Sachpazis.
Geotechnical engineering is a branch of civil engineering that focuses on the behavior of earth materials such as soil and rock. It is a crucial aspect of any construction project, as the properties of the ground can have a significant impact on the design and stability of structures. Geotechnical engineers work to understand the physical and mechanical properties of soil and rock, as well as how these materials interact with man-made structures.
Geotechnical engineering plays a crucial role in the field of civil engineering, as it deals with the behavior of earth materials and how they interact with structures. Understanding the properties of soil and rock beneath the surface is essential for designing safe and stable structures that can withstand various loads and environmental conditions. Without proper knowledge of geotechnical engineering, civil engineers would not be able to ensure the safety and longevity of their projects.
Sachpazis: Steel member fire resistance design to Eurocode 3 / Σαχπάζης: Σχεδ...Dr.Costas Sachpazis
This document summarizes the fire resistance design of a steel member according to EN1993-1-2:2005. The design checks the member for shear, bending moment, temperature, and time to critical temperature under fire conditions. The summary shows the member passes all criteria with utilization levels below 1.0. Key details of the member, loading, fire protection, and temperature analysis are provided.
Sachpazis_Retaining Structures-Ground Anchors and Anchored Systems_C_Sachpazi...Dr.Costas Sachpazis
A retaining wall is a structure that is designed to hold back soil or other materials when there is a change in ground elevation. Retaining walls are commonly used in civil engineering to support soil and prevent erosion. They are typically constructed of various materials, including concrete, masonry, and timber.
Retaining walls are used in a variety of settings, including residential and commercial construction, roadways and highways, and landscaping projects. They are often used to create level areas for building or landscaping by holding back soil or other materials on sloping terrain.
The design of a retaining wall depends on several factors, including the type of soil, the height of the wall, and the slope of the ground. There are several types of retaining walls, including gravity walls, cantilever walls, sheet pile walls, and anchored walls. The type of wall used depends on the specific requirements of the project.
Overall, retaining walls are an important component of civil engineering projects and are used to support soil and prevent erosion. They require careful design and construction to ensure their stability and effectiveness.
Single pile analysis & design, l=18,00m d=1,10m, by C.SachpazisDr.Costas Sachpazis
This document provides input data and analysis for the design of a single pile with a length of 18 meters and diameter of 1.1 meters. It includes soil parameters, load assumptions, and analysis of the pile's vertical and horizontal bearing capacity. The analysis found the pile has adequate bearing capacity for the applied loads with a maximum settlement of 3.2 mm under the service load condition.
Pile configuration optimization on the design of combined piled raft foundationsDr.Costas Sachpazis
By: Birhanu Asefa, Eleyas Assefa, Lysandros Pantelidis,Costas Sachpazis
This paper examines the impact of different pile configurations and geometric parameters on the bearing capacity and the settlement response of a combined pile–raft foundation system utilizing FLAC3D software. The configurations considered were: (1) uniform piles (denoted as CONF1), (2) shorter and longer piles uniformly distributed on the plan view of the raft (CONF2), (3) shorter piles at the center and longer piles at the edge of the raft (CONF3), and (4) longer piles at the center and shorter piles at the edge of the raft (CONF4). In the same framework, different pile diameters and raft stiffnesses were examined. The piles are considered to float in a cohesive–frictional soil mass, simulating the thick cohesive soil deposit found in Addis Abeba (Ethiopia). During simulation, a zero-thickness interface element was employed to incorporate the complex interaction between the soil elements and the structural elements. The analyses indicate that the configuration of piles has a considerable effect on both the bearing capacity and the settlement response of the foundation system. CONF1 and CONF3 improve the bearing capacity and exhibits a smaller average settlement than other configurations. However, CONF3 registers the highest differential settlement. On the other hand, the lowest differential settlement was achieved by the CONF4 configuration; the same configuration also gives ultimate load resistance comparable to those provided by either CONF1 or CONF3. The study also showed that applying zero-thickness interface elements to simulate the interaction between components of the foundation system is suitable for examining piled raft foundations problem.
Σαχπάζης Πλεονεκτήματα και Προκλήσεις της Αιολικής ΕνέργειαςDr.Costas Sachpazis
Σαχπάζης: Πλεονεκτήματα και Προκλήσεις της Αιολικής Ενέργειας.
Πλεονεκτήματα και Προκλήσεις της Αιολικής Ενέργειας
Από Κώστα Σαχπάζη, Πολιτικό Μηχανικό, καθηγητή Πολυτεχνικής Σχολής στην Γεωτεχνική Μηχανική
Η αιολική ενέργεια προσφέρει πολλά πλεονεκτήματα, κάτι που εξηγεί γιατί είναι μια από τις ταχύτερα αναπτυσσόμενες πηγές ενέργειας στον κόσμο. Οι ερευνητικές προσπάθειες αποσκοπούν στην αντιμετώπιση των προκλήσεων για μεγαλύτερη χρήση της αιολικής ενέργειας.
Καθώς είναι πιο καθαρή και φιλική προς το κλίμα, η Αιολική Ενέργεια χρησιμοποιείται ολοένα και περισσότερο για να καλύψει τις συνεχώς αυξανόμενες παγκόσμιες ενεργειακές απαιτήσεις. Στην Ελλάδα, υπάρχει ένα μεγάλο κενό μεταξύ των Αιολικών Πόρων και της πραγματικής παραγωγής ενέργειας, και είναι επιτακτική ανάγκη να επεκταθεί η ανάπτυξη της αιολικής ενέργειας, ιδιαίτερα στις ημέρες μας μετά από την Νέα Εποχή της Απολιγνιτοποίησης που έχουμε εισέλθει με βάση τις προσταγές και τους νόμους της Ευρωπαϊκής Ένωσης.
Ας δούμε όμως παρακάτω περισσότερα για τα οφέλη της αιολικής ενέργειας και μερικές από τις προκλήσεις που προσπαθεί να ξεπεράσει:
Πλεονεκτήματα της Αιολικής Ενέργειας
Sachpazis_Pile Analysis and Design for Acropolis Project According to EN 1997...Dr.Costas Sachpazis
1) The document provides details of a circular column pile design including input parameters such as pile dimensions, safety factors, design parameters, settlement parameters, and layer properties.
2) It summarizes the calculations of layer capacities, total capacities, design capacities, and settlement at service and ultimate limit states.
3) Key outputs include a design load of 3600 kN, a calculated capacity of 5527.83 kN, an Everett settlement of 3.43 mm at SLS and 5.21 mm at ULS, and a required reinforcement area of 2544.69 mm2.
Παράδειγμα ανάλυσης και σχεδίασης Ζευκτών (Trusses) σύμφωνα με τον Ευρωκώδικα EC3, του Δρ. Κώστα Σαχπάζη.
Truss Analysis and Design example to EC3, by Dr. Costas Sachpazis
Differential settlement occurs when different parts of a building's foundation settle by different amounts, causing the building to sink unevenly. This can be caused by variations in soil strength or compaction issues. Uniform settlement across a building is expected over time but differential settlement can damage a building's structure. Signs may include cracks, sticking doors and windows, and leaning walls. Proper site inspection and using deep foundations like helical piers in expansive soils can help prevent differential settlement issues.
Retaining walls are relatively rigid walls used for supporting soil laterally so that it can be retained at different levels on the two sides. Retaining walls are structures designed to restrain soil to a slope that it would not naturally keep to (typically a steep, near-vertical or vertical slope). They are used to bound soils between two different elevations often in areas of terrain possessing undesirable slopes or in areas where the landscape needs to be shaped severely and engineered for more specific purposes like hillside farming or roadway overpasses. A retaining wall that retains soil on the backside and water on the frontside is called a seawall or a bulkhead.
Sachpazis: Hydraulic Structures / About Dams.
A dam is a barrier that stops or restricts the flow of water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, aquaculture, and navigability. Hydropower is often used in conjunction with dams to generate electricity. A dam can also be used to collect water or for storage of water which can be evenly distributed between locations. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees (also known as dikes) are used to manage or prevent water flow into specific land regions. The earliest known dam is the Jawa Dam in Jordan, dating to 3,000 BC.
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International Upcycling Research Network advisory board meeting 4Kyungeun Sung
Slides used for the International Upcycling Research Network advisory board 4 (last one). The project is based at De Montfort University in Leicester, UK, and funded by the Arts and Humanities Research Council.
ARENA - Young adults in the workplace (Knight Moves).pdfKnight Moves
Presentations of Bavo Raeymaekers (Project lead youth unemployment at the City of Antwerp), Suzan Martens (Service designer at Knight Moves) and Adriaan De Keersmaeker (Community manager at Talk to C)
during the 'Arena • Young adults in the workplace' conference hosted by Knight Moves.
Practical eLearning Makeovers for EveryoneBianca Woods
Welcome to Practical eLearning Makeovers for Everyone. In this presentation, we’ll take a look at a bunch of easy-to-use visual design tips and tricks. And we’ll do this by using them to spruce up some eLearning screens that are in dire need of a new look.