Composite structure of steel and concrete has been explained under this ppt with examples, type of structural members, advantages and comparison with other structures like R.C.C structure and Steel structures.
1) Shear walls are vertical elements that carry lateral loads like wind and seismic forces from the building down to the foundation, forming a box structure for support.
2) Shear walls should be placed on all levels of the building, including the basement, and symmetrically on all four exterior walls to form an effective structure. Interior walls can add strength when exterior walls are not sufficient.
3) Common types of shear walls include reinforced concrete, plywood, steel plate, and hollow concrete block masonry walls. Proper design and ductility improve shear wall performance during seismic events.
Composite structure of concrete and steel.Suhailkhan204
This document discusses composite structures, which combine steel and concrete materials. The key elements of composite structures are composite deck slabs, beams, and columns, along with shear connectors. Composite structures take advantage of concrete's compressive strength and steel's tensile strength. They provide benefits like increased load capacity, stiffness, fire resistance, and cost savings compared to traditional steel or concrete construction alone. An example project, the Millennium Tower in Vienna, is described. The document analyzes costs and concludes that composite structures are best suited for high-rise buildings due to reduced weight, increased ductility, and savings of around 10% compared to reinforced concrete.
The document discusses structural steel, including its composition, properties, types, and applications in construction. It describes how steel is made from iron with added elements, and its varying properties based on carbon content. The types discussed are mild steel, medium carbon steel, and high carbon steel. Common structural steel applications mentioned include beams, columns, trusses, and framing for buildings like airports and stadiums.
Composite Concrete-Steel Construction in Tall Buildings by Dr. NaveedAIT Solutions
The document discusses composite concrete-steel construction systems used in tall buildings. It describes how composite and mixed systems use concrete and steel acting together to provide benefits like increased strength and stiffness. Common composite elements discussed include composite floors, beams, columns, shear walls, and link beams. Composite columns provide benefits like increased strength and stiffness. Concrete-filled steel tubes are an efficient composite column type. Recent developments in composite shear walls include concrete-filled composite plate shear wall systems that offer enhanced seismic performance. Case studies of composite tall buildings in Asia are also presented.
The document discusses reinforced cement concrete (RCC) structures. It describes two types of building structures - load bearing, where walls transmit loads directly to the ground, and framed structures, where loads are transferred through RCC beams, columns, and slabs. It also discusses design loads on buildings including dead loads from structural weight and live loads. Common RCC structural elements like beams, slabs, shear walls and elevator shafts are described. Raw materials, advantages, specifications, common ratios, one-way and two-way slabs, and examples of RCC structures are covered.
Shoring is the construction of a temporary structure to support an unsafe or unstable structure. There are three main types of shoring: raking shores, flying shores, and dead shores. Raking shores use inclined members called rakers to provide lateral support to walls. Flying shores provide temporary support between party walls when an intermediate building is demolished. Dead shores provide vertical support to walls and structures when the lower part of a wall is removed, such as to add an opening.
Reinforced concrete is a composite material consisting of concrete and steel reinforcement. François Coignet built the first iron reinforced concrete structure in 1853. Reinforced concrete uses the strengths of both materials - concrete is strong in compression and steel is strong in tension. It is used widely in construction for buildings, bridges, tunnels and other structures due to its high strength and durability.
The document discusses rigid frame systems used in high-rise buildings. It provides a history of rigid frames, an introduction to what they are, and examples of their applications. It describes the material properties and connections used. It discusses considerations for rigid frame design like behavior under lateral loads. It notes advantages like architectural freedom but also disadvantages like increased drift. It concludes with a case study on using hybrid rigid/semi-rigid frames to improve seismic performance.
1) Shear walls are vertical elements that carry lateral loads like wind and seismic forces from the building down to the foundation, forming a box structure for support.
2) Shear walls should be placed on all levels of the building, including the basement, and symmetrically on all four exterior walls to form an effective structure. Interior walls can add strength when exterior walls are not sufficient.
3) Common types of shear walls include reinforced concrete, plywood, steel plate, and hollow concrete block masonry walls. Proper design and ductility improve shear wall performance during seismic events.
Composite structure of concrete and steel.Suhailkhan204
This document discusses composite structures, which combine steel and concrete materials. The key elements of composite structures are composite deck slabs, beams, and columns, along with shear connectors. Composite structures take advantage of concrete's compressive strength and steel's tensile strength. They provide benefits like increased load capacity, stiffness, fire resistance, and cost savings compared to traditional steel or concrete construction alone. An example project, the Millennium Tower in Vienna, is described. The document analyzes costs and concludes that composite structures are best suited for high-rise buildings due to reduced weight, increased ductility, and savings of around 10% compared to reinforced concrete.
The document discusses structural steel, including its composition, properties, types, and applications in construction. It describes how steel is made from iron with added elements, and its varying properties based on carbon content. The types discussed are mild steel, medium carbon steel, and high carbon steel. Common structural steel applications mentioned include beams, columns, trusses, and framing for buildings like airports and stadiums.
Composite Concrete-Steel Construction in Tall Buildings by Dr. NaveedAIT Solutions
The document discusses composite concrete-steel construction systems used in tall buildings. It describes how composite and mixed systems use concrete and steel acting together to provide benefits like increased strength and stiffness. Common composite elements discussed include composite floors, beams, columns, shear walls, and link beams. Composite columns provide benefits like increased strength and stiffness. Concrete-filled steel tubes are an efficient composite column type. Recent developments in composite shear walls include concrete-filled composite plate shear wall systems that offer enhanced seismic performance. Case studies of composite tall buildings in Asia are also presented.
The document discusses reinforced cement concrete (RCC) structures. It describes two types of building structures - load bearing, where walls transmit loads directly to the ground, and framed structures, where loads are transferred through RCC beams, columns, and slabs. It also discusses design loads on buildings including dead loads from structural weight and live loads. Common RCC structural elements like beams, slabs, shear walls and elevator shafts are described. Raw materials, advantages, specifications, common ratios, one-way and two-way slabs, and examples of RCC structures are covered.
Shoring is the construction of a temporary structure to support an unsafe or unstable structure. There are three main types of shoring: raking shores, flying shores, and dead shores. Raking shores use inclined members called rakers to provide lateral support to walls. Flying shores provide temporary support between party walls when an intermediate building is demolished. Dead shores provide vertical support to walls and structures when the lower part of a wall is removed, such as to add an opening.
Reinforced concrete is a composite material consisting of concrete and steel reinforcement. François Coignet built the first iron reinforced concrete structure in 1853. Reinforced concrete uses the strengths of both materials - concrete is strong in compression and steel is strong in tension. It is used widely in construction for buildings, bridges, tunnels and other structures due to its high strength and durability.
The document discusses rigid frame systems used in high-rise buildings. It provides a history of rigid frames, an introduction to what they are, and examples of their applications. It describes the material properties and connections used. It discusses considerations for rigid frame design like behavior under lateral loads. It notes advantages like architectural freedom but also disadvantages like increased drift. It concludes with a case study on using hybrid rigid/semi-rigid frames to improve seismic performance.
The document discusses the design of staircases. It begins by defining key components of staircases like treads, risers, stringers, etc. It then describes different types of staircases such as straight, doglegged, and spiral. The document outlines considerations for designing staircases like dimensions, loads, and structural behavior. It provides steps for geometric design, load calculations, structural analysis, reinforcement design, and detailing of staircases. Numerical examples are also included to illustrate the design process.
Prestressed concrete is concrete that is placed under compression using tensioned steel strands, cables, or bars. This is done through either pre-tensioning or post-tensioning. In pre-tensioning, the steel components are tensioned before the concrete is poured, while in post-tensioning, the steel components are tensioned after the concrete has hardened. Prestressed concrete provides benefits over reinforced concrete like lower construction costs, thinner structural elements, and longer spans between supports.
Steel structures involve structural steel members designed to carry loads and provide rigidity. Some famous steel structures include the Walt Disney Concert Hall, Tyne Bridge, and Howrah Bridge. Steel structures have advantages like high strength, ductility, elasticity, and ease of fabrication and erection. The Howrah Bridge is a steel cantilever bridge that connects Howrah and Kolkata. When built, it was the 3rd longest cantilever bridge in the world. It uses steel components like I-beams, rivets, and expansion joints and was constructed between 1936-1942.
Composite Construction Method for Engineering and ArchitectureMimi Alguidano
Composite construction uses two materials together to utilize each material's strengths. It examines problems with steel-concrete beams, including concrete placement order and deflection monitoring. New approaches include beam-column systems and air ducts in box girders. Other composites include timber-concrete slabs and steel-timber trusses.
Composite construction is beneficial because concrete resists compression well and steel resists tension well. Joining them results in an efficient, lightweight design with construction speed benefits. It allows for reduced floor depths and foundation sizes.
The benefits of composite construction include speed, performance, and value. Steel erection is fast and prefabricated decks provide stiffness when concrete cures. Concrete also protects
1) High rise buildings are becoming more common due to scarcity of land and demand for space. They are defined differently but generally refer to buildings over 15 meters tall.
2) Foundations for high rise buildings include shallow foundations like spread footings and mat foundations, and deep foundations like piles. Piles transfer load through end bearing or friction along their length.
3) Structural systems for high rise buildings must resist both gravity and lateral loads. Interior systems include rigid frames and shear walls. Exterior systems such as tube and diagrid systems resist loads along the building perimeter.
Footings are structural members that support columns and walls and transmit their loads to the soil. Different types of footings include wall footings, isolated/single footings, combined footings, cantilever/strap footings, continuous footings, rafted/mat foundations, and pile caps. Footings must be designed to safely carry and transmit loads to the soil while meeting code requirements regarding bearing capacity, settlement, reinforcement, and shear strength. A proper footing design involves determining loads, allowable soil pressure, reinforcement requirements, and assessing settlement.
It is the presentation based on precast concrete construction which includes each and every point and scope which may be useful to civil engineering students
This document summarizes the key aspects of flat slab construction and design according to Indian code IS 456-2000. It defines flat slabs as slabs that are directly supported by columns without beams, and describes four common types based on whether drops and column heads are used. The main topics covered include guidelines for proportioning slabs and drops, methods for determining bending moments and shear forces, requirements for slab reinforcement, and an example problem demonstrating the design of an interior flat slab panel.
This document provides an introduction to reinforced concrete, including its key components and purposes. Reinforced concrete is a composite material made of concrete, which resists compression well but has low tensile strength, and steel reinforcing bars, which resist tension well. Together they create an economical and strong structural material. The document outlines structural elements, design considerations for safety, reliability, and economy, and limit state design principles which ensure structures do not fail under expected loads. It also discusses factors that affect concrete durability and different failure modes in reinforced concrete depending on steel reinforcement ratios.
Shells are curved structures that can transmit loads in multiple directions and are constructed using thin materials like concrete or reinforced concrete. They distribute loads across their surfaces through compressive, tensile and shear stresses. Large spherical domes are often constructed using inflated membranes as forms which provide support during construction. Domes over 300 feet require a grid structure to provide sufficient stiffness while minimizing weight. Shells and folded plates are constructed as uniform thin surfaces rather than stacked discrete pieces like frames. Domes, vaults, and barrel shells are examples of shell structures used in building construction.
This document discusses failures in masonry structures and provides details on planning considerations, construction aspects, and seismic resistance of unreinforced masonry (URM) structures. It covers topics such as types of masonry materials, connections needed between building elements like roofs, walls and floors, and the effects of different types of loading on URM structures. Construction aspects that can improve seismic resistance are also outlined, such as integrating box action of walls and including reinforcement at wall corners and openings.
This document provides an overview of different types of retaining walls, including gravity, cantilever, counterfort, sheet pile, and diaphragm walls. It discusses the key components and design considerations for gravity and cantilever retaining walls. Gravity walls rely on their own weight for stability, while cantilever walls consist of a vertical stem with a heel and toe slab acting as a cantilever beam. The document also covers lateral earth pressures, drainage of retaining walls, uses of sheet pile walls, and construction methods for diaphragm walls.
This document provides a summary of a book on architectural structures. It discusses the book's organization into six parts that cover the background, mechanics, design methods, horizontal and vertical structural systems, and structural materials used in buildings. It includes brief descriptions of the content covered in each chapter. The book aims to provide both conceptual and mathematical understanding of structures through illustrations and examples. It can be used for courses on statics, strength of materials, structural systems, and structural materials. The document also acknowledges contributions from students and others and dedicates the book to the author's family.
It is used as a mould for a structure in which fresh concrete is poured only to harden subsequently.
formwork for concrete slab
beam formwork
steel formwork
doka h20
types of formwork
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what is formwork in construction
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plywood disadvantages
advantage plywood
advantages and disadvantages of wood
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mdf advantages and disadvantages
examples of advantages and disadvantages
advantage steel and construction
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wiki advantages and disadvantages
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Tube structures and its type with comparison .Udayram Patil
Hollow tube section always provide greater strength. So the same concept is applied to the building. Tubed system is designed to act like a three dimensional hollow tube structure which result in increased load resistance .
Pre-stressed concrete uses tensioned steel strands or bars to place concrete in compression before application of service loads. This counters the tensile stresses induced by loads and prevents cracking. There are two main methods: pre-tensioning applies tension before pouring concrete, while post-tensioning tensions strands after concrete curing. Pre-stressed concrete allows for smaller and lighter structures that resist loads, deflection, and cracking better than reinforced concrete.
This document discusses steel-concrete composite construction. It describes shear connectors, which provide composite action between steel beams and concrete slabs. There are three main types of shear connectors: rigid connectors made of steel bars or angles that resist shear through bearing pressure; flexible stud connectors that bend and fail through yielding; and bond-type connectors that rely on bond and anchoring. The document discusses the design of shear connectors according to Indian codes IRC 22-1986 and IS 11384-1985, providing methods to calculate the design strength of shear connectors.
Experimental Investigation on Steel Concrete Composite Floor SlabIRJET Journal
This document summarizes an experimental investigation on steel-concrete composite floor slabs. Cold-formed steel decking with trapezoidal profiles was used to construct composite floor slabs with concrete. Shear connectors in the form of stud bolts connected the steel decking to the concrete. Three specimens were tested - an RCC slab, a composite slab, and a composite truss. The composite truss was fabricated from steel and connected to the decking and concrete with shear connectors. All specimens were tested for load carrying capacity. The composite truss performed comparably to the RCC slab and was found to effectively transfer loads through composite action between the steel and concrete components.
The document discusses the design of staircases. It begins by defining key components of staircases like treads, risers, stringers, etc. It then describes different types of staircases such as straight, doglegged, and spiral. The document outlines considerations for designing staircases like dimensions, loads, and structural behavior. It provides steps for geometric design, load calculations, structural analysis, reinforcement design, and detailing of staircases. Numerical examples are also included to illustrate the design process.
Prestressed concrete is concrete that is placed under compression using tensioned steel strands, cables, or bars. This is done through either pre-tensioning or post-tensioning. In pre-tensioning, the steel components are tensioned before the concrete is poured, while in post-tensioning, the steel components are tensioned after the concrete has hardened. Prestressed concrete provides benefits over reinforced concrete like lower construction costs, thinner structural elements, and longer spans between supports.
Steel structures involve structural steel members designed to carry loads and provide rigidity. Some famous steel structures include the Walt Disney Concert Hall, Tyne Bridge, and Howrah Bridge. Steel structures have advantages like high strength, ductility, elasticity, and ease of fabrication and erection. The Howrah Bridge is a steel cantilever bridge that connects Howrah and Kolkata. When built, it was the 3rd longest cantilever bridge in the world. It uses steel components like I-beams, rivets, and expansion joints and was constructed between 1936-1942.
Composite Construction Method for Engineering and ArchitectureMimi Alguidano
Composite construction uses two materials together to utilize each material's strengths. It examines problems with steel-concrete beams, including concrete placement order and deflection monitoring. New approaches include beam-column systems and air ducts in box girders. Other composites include timber-concrete slabs and steel-timber trusses.
Composite construction is beneficial because concrete resists compression well and steel resists tension well. Joining them results in an efficient, lightweight design with construction speed benefits. It allows for reduced floor depths and foundation sizes.
The benefits of composite construction include speed, performance, and value. Steel erection is fast and prefabricated decks provide stiffness when concrete cures. Concrete also protects
1) High rise buildings are becoming more common due to scarcity of land and demand for space. They are defined differently but generally refer to buildings over 15 meters tall.
2) Foundations for high rise buildings include shallow foundations like spread footings and mat foundations, and deep foundations like piles. Piles transfer load through end bearing or friction along their length.
3) Structural systems for high rise buildings must resist both gravity and lateral loads. Interior systems include rigid frames and shear walls. Exterior systems such as tube and diagrid systems resist loads along the building perimeter.
Footings are structural members that support columns and walls and transmit their loads to the soil. Different types of footings include wall footings, isolated/single footings, combined footings, cantilever/strap footings, continuous footings, rafted/mat foundations, and pile caps. Footings must be designed to safely carry and transmit loads to the soil while meeting code requirements regarding bearing capacity, settlement, reinforcement, and shear strength. A proper footing design involves determining loads, allowable soil pressure, reinforcement requirements, and assessing settlement.
It is the presentation based on precast concrete construction which includes each and every point and scope which may be useful to civil engineering students
This document summarizes the key aspects of flat slab construction and design according to Indian code IS 456-2000. It defines flat slabs as slabs that are directly supported by columns without beams, and describes four common types based on whether drops and column heads are used. The main topics covered include guidelines for proportioning slabs and drops, methods for determining bending moments and shear forces, requirements for slab reinforcement, and an example problem demonstrating the design of an interior flat slab panel.
This document provides an introduction to reinforced concrete, including its key components and purposes. Reinforced concrete is a composite material made of concrete, which resists compression well but has low tensile strength, and steel reinforcing bars, which resist tension well. Together they create an economical and strong structural material. The document outlines structural elements, design considerations for safety, reliability, and economy, and limit state design principles which ensure structures do not fail under expected loads. It also discusses factors that affect concrete durability and different failure modes in reinforced concrete depending on steel reinforcement ratios.
Shells are curved structures that can transmit loads in multiple directions and are constructed using thin materials like concrete or reinforced concrete. They distribute loads across their surfaces through compressive, tensile and shear stresses. Large spherical domes are often constructed using inflated membranes as forms which provide support during construction. Domes over 300 feet require a grid structure to provide sufficient stiffness while minimizing weight. Shells and folded plates are constructed as uniform thin surfaces rather than stacked discrete pieces like frames. Domes, vaults, and barrel shells are examples of shell structures used in building construction.
This document discusses failures in masonry structures and provides details on planning considerations, construction aspects, and seismic resistance of unreinforced masonry (URM) structures. It covers topics such as types of masonry materials, connections needed between building elements like roofs, walls and floors, and the effects of different types of loading on URM structures. Construction aspects that can improve seismic resistance are also outlined, such as integrating box action of walls and including reinforcement at wall corners and openings.
This document provides an overview of different types of retaining walls, including gravity, cantilever, counterfort, sheet pile, and diaphragm walls. It discusses the key components and design considerations for gravity and cantilever retaining walls. Gravity walls rely on their own weight for stability, while cantilever walls consist of a vertical stem with a heel and toe slab acting as a cantilever beam. The document also covers lateral earth pressures, drainage of retaining walls, uses of sheet pile walls, and construction methods for diaphragm walls.
This document provides a summary of a book on architectural structures. It discusses the book's organization into six parts that cover the background, mechanics, design methods, horizontal and vertical structural systems, and structural materials used in buildings. It includes brief descriptions of the content covered in each chapter. The book aims to provide both conceptual and mathematical understanding of structures through illustrations and examples. It can be used for courses on statics, strength of materials, structural systems, and structural materials. The document also acknowledges contributions from students and others and dedicates the book to the author's family.
It is used as a mould for a structure in which fresh concrete is poured only to harden subsequently.
formwork for concrete slab
beam formwork
steel formwork
doka h20
types of formwork
formwork for concrete
what is formwork in construction
building formwork
plywood disadvantages
advantage plywood
advantages and disadvantages of wood
best plywood for formwork
plywood formwork for concrete
mdf advantages and disadvantages
examples of advantages and disadvantages
advantage steel and construction
advantages of steel
disadvantages of steel structures
examples of advantages and disadvantages
advantages and disadvantages of surveys
wiki advantages and disadvantages
steel formwork design
steel formwork system
Tube structures and its type with comparison .Udayram Patil
Hollow tube section always provide greater strength. So the same concept is applied to the building. Tubed system is designed to act like a three dimensional hollow tube structure which result in increased load resistance .
Pre-stressed concrete uses tensioned steel strands or bars to place concrete in compression before application of service loads. This counters the tensile stresses induced by loads and prevents cracking. There are two main methods: pre-tensioning applies tension before pouring concrete, while post-tensioning tensions strands after concrete curing. Pre-stressed concrete allows for smaller and lighter structures that resist loads, deflection, and cracking better than reinforced concrete.
This document discusses steel-concrete composite construction. It describes shear connectors, which provide composite action between steel beams and concrete slabs. There are three main types of shear connectors: rigid connectors made of steel bars or angles that resist shear through bearing pressure; flexible stud connectors that bend and fail through yielding; and bond-type connectors that rely on bond and anchoring. The document discusses the design of shear connectors according to Indian codes IRC 22-1986 and IS 11384-1985, providing methods to calculate the design strength of shear connectors.
Experimental Investigation on Steel Concrete Composite Floor SlabIRJET Journal
This document summarizes an experimental investigation on steel-concrete composite floor slabs. Cold-formed steel decking with trapezoidal profiles was used to construct composite floor slabs with concrete. Shear connectors in the form of stud bolts connected the steel decking to the concrete. Three specimens were tested - an RCC slab, a composite slab, and a composite truss. The composite truss was fabricated from steel and connected to the decking and concrete with shear connectors. All specimens were tested for load carrying capacity. The composite truss performed comparably to the RCC slab and was found to effectively transfer loads through composite action between the steel and concrete components.
Design of Metal Deck Sheet and Composite I-Section as secondary memberIRJET Journal
This document discusses the design of a metal deck sheet and composite I-section beam to be used as secondary structural members. It first provides an introduction to steel structures and their advantages. It then outlines the loads considered in the design, including dead and live loads. The design of the metal deck sheet is presented, checking that it satisfies bending stress and deflection requirements. Finally, the design of the composite I-section beam is described, analyzing it under dead and live loads and checking stresses, deflections, and shear capacity. The design satisfies all code requirements.
Reinforcement concrete and properties of matrial VIKAS4210607
The document discusses the properties and characteristics of reinforced concrete and its constituent materials - concrete and steel reinforcement. It provides information on:
- Concrete is composed of cement, aggregate and water that hardens over time to form a durable stone-like material. Reinforced concrete includes steel reinforcement to increase its tensile strength.
- The properties of concrete and steel depend on their composition and standards. Concrete properties include compressive strength and shrinkage properties. Steel properties include yield strength.
- Permissible stresses values for concrete and steel under different loads and grades are defined in codes based on material testing. Reinforced concrete exploits the composite action of concrete and steel to form an efficient structural material.
The document provides information about precast concrete, including:
- Precast concrete is concrete that is cast off-site in a controlled environment using reusable molds. Elements can be joined to form structures.
- Products include buildings, walls, slabs, columns. Elements are poured into molds, cured, then transported and installed.
- History of precast concrete dates back to Rome. Examples given include the Sydney Opera House and buildings by Richard Meier.
- Advantages include reduced construction time, quality control, and earthquake resistance. Disadvantages include high costs for small projects and difficulty altering cast-in services.
Comparative study on behaviour of RCC and steel – concrete composite multisto...IRJET Journal
This document compares the behavior of reinforced concrete (RCC) and steel-concrete composite multi-storey buildings through modeling and analysis. Three 10-story building models are created - one with RCC structure and two with composite structures using encased columns and concrete filled tubes. The models are analyzed using ETABS software to compare parameters like joint displacement, story drift, story shear, and cost. The results show that composite structures have higher joint displacements but lower story drifts and shears compared to RCC. Construction costs are also around 65% lower for the composite structures compared to RCC due to reduced concrete and rebar usage. In conclusion, composite structures provide better seismic performance and are more economical than conventional RCC
prestressed concrete and precast concrete technology.pptxPRASANNABHAVANGR1
This document provides information on precast, prestressed concrete construction. It discusses how precast concrete elements are cast off-site in a controlled environment and transported to the construction site. This allows for faster, more efficient construction compared to site-cast concrete. Common precast structural elements include slabs, beams, columns, and wall panels. The document outlines the manufacturing process and how precast elements are joined together on-site. It also discusses some applications of precast concrete such as buildings, bridges, and water tanks.
This document provides information on roof construction, industrialized building systems, and precast roof systems. It discusses coated fiberglass membrane roofs, precast concrete walls, beams, columns, flooring, and staircases. Precast concrete is described as having advantages like ease of installation, consistent quality, and reduced weather dependency compared to site-cast construction. Details and specifications are given for various precast structural and envelope elements. The document serves as a reference for a student project on advanced roof systems and industrialized building techniques.
Important Characteristics and Behavioral Impact of Materials to Be Used in Ta...RSIS International
This paper reviews the importance of composite
structure in construction of high rise buildings. Here there is
basic comparison between the commonly used construction
materials i.e. steel and concrete. The significance of each of this
material in construction field has been briefly discussed. also,
some important characteristics of each material is explained.
Composite construction by Er. SURESH RAOAjit Sabnis
Presentation is a part of Structural Engg. series by ACCE(I) Institutes. Deals with details of Composite Structures-Design and Construction with case studies
This document discusses prefabrication, systems building, and mixed/composite construction. It begins with an introduction and overview of prefabricated concrete, including terminology, materials, components, design requirements, joints, and manufacturing processes. It then covers systems building and mixed/composite construction, discussing formwork systems, structural schemes, and prefabricated structural units. The document provides details on various modular planning, construction elements, and techniques used in prefabricated and systems building projects.
This document provides information about a building technology course on alternative construction systems. It includes the course name, description, units, contact hours, prerequisites, objectives, and outline. The course aims to teach students about non-conventional construction methods, provide working details of different systems, understand advantages, and learn about latest technologies. The outline covers topics like cast-in-place and precast concrete, prestressed concrete, composite construction, tensile structures, and pre-engineered buildings. Studio equipment includes sample drawings.
This document provides information on formwork used in concrete construction. It defines formwork and lists its common materials as steel and wood. It describes the major objectives in formwork as quality, safety, and economy. It discusses the various types of formwork including temporary and permanent structures. It also provides details on formwork for different structural elements like walls, columns, slabs, beams, stairs, and chimneys. Finally, it covers topics like requirements, loads, design, and maintenance of formwork.
The document discusses the planning, analysis, and design of a G+3 steel-concrete composite building. Key aspects summarized include:
1) The building is 15m x 12m with 3.5m floor heights and will be analyzed and designed using STAAD-Pro software.
2) Composite structures combine the high tensile strength of steel with the high compressive strength of concrete. Shear connectors are critical to transfer forces between the steel and concrete.
3) Analysis of the building found typical bending moments, shear forces, and axial forces in the frames. The composite slab, beams, columns, and foundation were then designed.
4) Though initially more costly than RCC, the
A concrete slab is a common structural element of modern buildings. Horizontal slabs of steel reinforced concrete, typically between 4 and 20 inches (100 and 500 millimeters) thick, are most often used to construct floors and ceilings, while thinner slabs are also used for exterior paving. Sometimes these thinner slabs, ranging from 2 inches (51 mm) to 6 inches (150 mm) thick, are called mud slabs, particularly when used under the main floor slabs[1] or in crawl spaces.[2]
In many domestic and industrial buildings a thick concrete slab, supported on foundations or directly on the subsoil, is used to construct the ground floor of a building. These can either be "ground-bearing" or "suspended" slabs. The slab is "ground-bearing" if it rests directly on the foundation, otherwise the slab is "suspended".[3] For double-storey or multi-storey buildings, the use of a few common types of concrete suspended slabs are used (for more types refer to the Concrete Slab#Design section below):
Beam and block also referred to as Rib and Block, are mostly used in residential and industrial applications. This slab type is made up of pre-stressed beams and hollow blocks and are temporarily propped until set, typically after 21 days.
A Hollow core slab which are precast and installed on site with a crane.
In high rise buildings and skyscrapers, thinner, pre-cast concrete slabs are slung between the steel frames to form the floors and ceilings on each level. Cast in-situ slabs are used in high rise buildings and huge shopping complexes as well as houses. These in-situ slabs are cast on site using shutters and reinforced steel.
A truss is an assembly of members such as beams, connected by nodes, that creates a rigid structure. In engineering, a truss is a structure that "consists of two-force members only, where the members are organized so that the assemblage as a whole behaves as a single object"
Lecture 3-Composites construction (1).pptxanik7nziza
This document discusses composite construction techniques, specifically composite metal decking with concrete and concrete-cambering composites. It describes how composite metal decking works with concrete fill to create a stiff, lightweight floor system. Methods for installing metal decking, shear connectors, and concrete are outlined. Cambering steel beams is discussed as a method to compensate for beam deflection under wet concrete loads. Quality control procedures for shear connector installation and verifying proper camber are also summarized.
The document discusses various types of wood floor systems and concrete floor systems. It explains the advantages of precast concrete over site-cast concrete, such as better quality control and the ability to steam cure. It also defines one-way and two-way concrete floor systems and lists different types of each, including solid slab, joist, flat plate, and waffle slab systems.
MODERN CONSTRUCTION TECHNOLOGIES IN ENGINEERING PERSPECTIVEDr K M SONI
Modern construction technologies provide advantages like faster construction, higher quality, environmental benefits, and ability to overcome lack of skilled workers. Technologies discussed include prefabricated buildings, tunnel formwork, jump formwork, reinforced soil, trenchless techniques, 3D printing, robotics, and more. While technologies increase speed and quality, some have limitations like limited architectural features, difficulty modifying structures, and higher initial costs. Overall, modern techniques can help qualify projects for sustainability and efficiency if the appropriate technology is selected for each project's unique requirements.
Steel is a versatile material that is commonly used for large scale construction projects due to its strength, durability, and cost-effectiveness. Steel trusses are a type of structure frequently employed in buildings to provide support for roofs, floors, and other loads. They consist of compression and tension elements arranged in a triangulated pattern, allowing them to efficiently span long distances with minimal material. Common types of steel truss designs include Pratt, Warren, and Fink configurations. Truss members are often made of angles, channels, tubes, or other standard steel sections joined together with bolted or welded connections.
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many companies are choosing E-Recruitment as the best
choice for recruitment. E-Recruitment is being done
through many online platforms like Linkedin, Naukri,
Instagram , Facebook etc. Now with high technology E-
Recruitment has gone through next level by using
Artificial Intelligence too.
Key Words : Talent Management, Talent Acquisition , E-
Recruitment , Artificial Intelligence Introduction
Effectiveness of Talent Acquisition through E-
Recruitment in this topic we will discuss about 4important
and interlinked topics which are
Online train ticket booking system project.pdfKamal Acharya
Rail transport is one of the important modes of transport in India. Now a days we
see that there are railways that are present for the long as well as short distance
travelling which makes the life of the people easier. When compared to other
means of transport, a railway is the cheapest means of transport. The maintenance
of the railway database also plays a major role in the smooth running of this
system. The Online Train Ticket Management System will help in reserving the
tickets of the railways to travel from a particular source to the destination.
Impartiality as per ISO /IEC 17025:2017 StandardMuhammadJazib15
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We have designed & manufacture the Lubi Valves LBF series type of Butterfly Valves for General Utility Water applications as well as for HVAC applications.
2. • The two complementary materials, structural steel and
reinforced concrete, are introduced.
• To explain the composite action of the two different
materials and to show how the structural members are
used, particularly in building construction.
• The use of composite construction for buildings is
outlined.
• Its Advantages and Disadvantages are also illustrated.
Objective
3. Introduction
The most important and most frequently encountered
combination of construction materials is that of steel and
concrete, with applications in multi-storey commercial
buildings and factories, as well as in bridges.
Composite construction refers to two load-carrying
structural members that are integrally connected and
deflect as a single unit.
This has become a standard type of construction in high
rise buildings selected by many Architects , Engineers
and Developers.
Composite floor systems are considered by many to be
the highest quality type of construction.
4. These essentially different materials are completely
compatible and complementary to each other.
Almost the same thermal expansion;
An ideal combination of strengths with the concrete
efficient in compression and the steel in tension;
Concrete also gives corrosion protection and thermal
insulation to the steel at elevated temperatures.
The Indian Code of Practice for Composite
Construction in Structural Steel and Concrete (IS:
11384 – 1985)
Introduction...
5. The Indian Code of Practice for Composite
Construction in Structural Steel and Concrete
(IS: 11384 – 1985)
• The maximum strain in concrete at outermost compression member is
taken as 0.0035 in bending.
• The total compressive force in concrete is given by
and this acts at a depth of 0.42 xu, not exceeding ds.
• The stress strain curve for steel section and concrete are as per IS: 456-
1978.
• A stress factor is applied to convert the
concrete section into steel.
Fcc = 0.36 (fck) bXu
a = 0.87 fy/0.36(fck)
6. Advantages
Composite construction used for commercial and other
multi-storey buildings, offers the following main advantages
to the designer and client
• The concrete acts together with the steel to create a stiffer,
lighter, less expensive structure .
• Speed and simplicity of construction - Faster to erect,
nearly 25% faster then traditional construction.
• Lighter construction than a traditional concrete building.
• Less material handling at site.
• Has better ductility and hence superior lateral load
behavior; better earthquake resistance.
• Ability to cover large column free area in buildings and
longer span for bridges/flyovers.
7. • Floors
• Shear Connections
• Columns
• Bracing Systems
Anatomy of composite construction
Floors = Slab + Beams
Note: Mainly will discus on
type of floors and connections.
8. Common Types of Floor Systems
• Concrete slabs supported by open-web joists
• One-way and two-way reinforced concrete slabs
supported on steel beams
• Concrete slab and steel beam composite floors
• Composite profiled decking floors
• Precast concrete floors on steel beams
Note: The most common arrangement found in composite floor
systems is a rolled or built-up steel beam connected to a formed steel
deck and concrete slab. Mostly Profiled Decking Floors system is used
in composite construction.
9. •Decking with deformed ribs (or embossed decking), as
shown, is commonly used
•The deformations on the ribs allow for a stronger bond
between the concrete and the decking
•Concrete Slab thickness must be ≥ 2” above steel deck
COMPOSITE DECK SLAB
10. • Composite floor system consists of
steel beams, metal decking and
concrete.
• They are combined in a very efficient
way so that the best properties of
each material can be used to optimize
construction techniques
11. • Size of sheeting = 1.8mx0.830m
• Thickness = 1.1mm
(a min. of 0.7 mm ie recommended)
• Yield strength of sheet = 250
N/sq.mm
12. • Do not need form work.
• Lightweight concrete is used resulting in
reduced dead weight.
• Decking distributes shrinkage strains, thus
prevents serious cracking.
• Decking stabilizes the beam against lateral
buckling, until the concrete hardens.
Advantages of Profiled decking floors
13. SHEAR CONNECTOR
• Mechanical connectors are used to develop the
composite action between steel beams and concrete.
• This connection is provided mainly to resist
longitudinal shear, and is referred to as the “ shear
connection“.
SHEAR STUDS
14. REQUIREMENTS OF SHEAR STUDS
• Shear stud diameter ≤ ¾” or ≤ 2.5 tf (prevent tear out).
(tf – thickness of flange or steel deck )
• Shear studs must extend 1½” above top of deck
• They must transfer direct shear at their base.
• They must create a tensile link into the concrete.
• They must be economic to manufacture and fix.
15. Ribs parallel:-
Longitudinal – 6 x stud diameter
Transverse – 4 x stud diameter
Ribs perpendicular:- 4 x stud diameter (long. And trans.)
Maximum spacing 4 x slab thickness or 600mm.
• Spacing of studs :
18. Millennium Tower (Vienna - Austria)
EXAMPLES OF COMPOSITE CONSTRUCTION
55 storeys
Total height 202 m
Total ground floor 38000 m2
Time of erection: 8 months
19. Composite columns
Concrete core
Composite Slim floor beams
Concrete slab
42,3 m
Composite
frame
Total time of erection: 8 month
max. speed 2 to 2.5 storeys per week!
20. Parking deck “DEZ” (Innsbruck - Austria)
4 storeys
Ground dimensions 60 x 30 m
Max. span length 10.58 m with
26 cm slim floor slab (= l/40)
21. Erection of composite columns over 2 storeys
Assembly of prefabricated concrete slabs
22. Cross section of the slim-floor beam and slab
-200 mm concrete slab
-60 mm prefabricated concrete elements
-steel beam: web 165/20 mm
flange 245/40 mm
-headed studs: 22 mm
60
260
200
CONTINUE..
23. COMPARISON OF RCC, STEEL, COMPOSITE
CONSTRUCTION (G+30 STORY)
In the comparative study includes,
• Deflections of the members,
• Size and material consumption of members in composite
with respect to R.C.C. and Steel sections.
Project details:
• Here Zone IV is taken as per IS 1893 : 2000, a typical office
building plan is selected with area covering 24 m x 42 m.
• Modeling was done with ETABS
29. CONCLUSION
As the results show the Steel option is better than R.C.C. But the
Composite option for high rise building is best suited among all three
options.
The reduction in the dead weight of the Steel framed structure is 32
% with respect to R.C.C. frame Structure and Composite framed
structure is 30 % with respect to R.C.C. framed structure.
Axial forces in column have been reduced by average 46% in steel
structure and reduced by average 7% in Composite framed
structure as compared to R.C.C. framed structure.
Steel and composite structure gives more ductility to the structure
as compared to the R.C.C. which is best suited under the effect of
lateral forces.
Total saving in the composite option as compared to the R.C.C.
results in 10 % so as with Steel it will be 6-7%.
A composite member is defined as consisting of a rolled or a built-up structural steel shape that is either filled with concrete, encased by reinforced concrete or structurally connected to a reinforced concrete slab. Composite members are constructed such that the structural steel shape and the concrete act together to resist axial compression and /or bending.
a stress factor a = 0.87 fy/0.36(fck)cu is applied to convert the concrete section into steel.
Ability to cover large column free area in buildings and longer span for bridges/flyovers. This leads to more usable space.
Reduced beam depth reduces the story height and consequently the cost of cladding in a building and lowers the cost of embankment in a flyover.
More use of a material i.e. steel, which is durable, fully recyclable on replacement and environment friendly.
Reductions in overall weight of structure and thereby reduction in foundation costs.
The decking not only acts as permanent formwork to the concrete, but also provides sufficient shear bond with the concrete so that, when the concrete has gained strength, the two materials act together compositely.
Composite beams are normally hot rolled or fabricated steel sections that act compositely with the slab. The composite interaction is achieved by the attachment of shear connectors to the top flange of the beam. These connectors generally take the form of headed studs.
Shear forces in secondary beams are increased by average 83.3% in steel structure and reduced by average 10 % in composite structure as compared to R.C.C. framed structure while in main beams shear forces are increased by average 131% in steel structure and reduced by average 100 % in composite structure as compared to R.C.C. framed structure.
Bending moments in secondary beams are increased by average 83.3% in steel structure and reduced by average 48 % in composite structure as compared to R.C.C. framed structure while in main beams bending moments are increased 131% in steel structure and increased by average 117 % in composite structure as compared to R.C.C. framed structure.