This presentation summarizes the design of one-way slab reinforcement. It defines one-way slabs as having an aspect ratio of 2:1 or greater, where bending occurs along the long axis. For analysis and design, a one-way slab is modeled as a series of rectangular beams side by side. Minimum slab thickness requirements are defined by building codes to control deflection. The presentation includes an example problem demonstrating the full design process for a one-way slab with given parameters.
This presentation summarizes the key aspects of one-way slab design. It defines one-way slabs as having an aspect ratio of 2:1 or greater, with bending primarily along the long axis. The presentation discusses the types of one-way slabs including solid, hollow, and ribbed. It also outlines the design considerations for one-way slabs according to the ACI code, including minimum thickness, reinforcement ratios, and bar spacing. An example problem demonstrates how to design a one-way slab for a given set of loading and dimensional conditions.
This presentation summarizes the key aspects of one-way slab design:
1) One-way slabs have an aspect ratio of 2:1 or greater, where bending occurs primarily along the long axis. They can be solid, hollow, or ribbed.
2) Design and analysis treats a unit strip of the slab as a rectangular beam of unit width and the slab thickness as the depth.
3) The ACI code specifies minimum slab thickness, concrete cover, span length, bar spacing, reinforcement ratios, and other design requirements.
4) An example problem demonstrates the design process, calculating loads, moments, minimum reinforcement, and checking the proposed slab thickness.
5) One-
The document provides an overview of one-way slab design. It defines one-way slabs as having an aspect ratio of 2:1 or greater, with bending primarily in one direction. Types of one-way slabs include solid, hollow, and ribbed slabs. The document discusses applications of the L/B ratio, loading conditions, analysis approach by considering strips as beams, and ACI code specifications for one-way slab design including minimum thickness, reinforcement ratios, and an example problem solution.
1) One-way slabs are reinforced concrete slabs that are primarily supported on two sides and bending occurs mainly in one direction.
2) They have an aspect ratio of length to width of 2:1 or greater. One-way slabs can be solid, hollow, or ribbed.
3) The ACI code provides specifications for one-way slab design including minimum thickness, concrete cover, span length, bar spacing, reinforcement ratios, and design examples.
Pt slab design philosophy with slides and pictures showing benefitPerwez Ahmad
This document summarizes the history and development of post-tensioned flat slab construction. It began with early research and development of prestressing in Europe in the 1920s-1930s to allow for longer bridge spans. Prestressing was later applied to other structures like aircraft hangars and then to flat slab construction in the 1950s. Post-tensioned flat slabs provide benefits over reinforced concrete flat slabs like reduced cracking, thinner slabs, and increased spans. The document discusses materials, design codes, comparisons to reinforced concrete, and examples of ongoing post-tensioned flat slab projects in Oman.
MoRT&H section for quality assurance Section 900.pptxaegdrnh53vup01
Dry Lean Concrete (DLC) is a Zero Slump concrete Sub-Base for wearing concrete course in conformity with the lines, grades and cross-sections shown on the drawings.
The design parameters of dry lean concrete sub-base say, width, thickness, grade of concrete, details of joints, etc. shall be as stipulated in the drawings.
CEMENT:-
Ultratech OPC 53 Grade conforming to IS 269 : 2015
AGGREGATES:-
Coarse Aggregate:-
Source:- Chikhli
Aggregates complying with IS 383.
Maximum size of the coarse aggregate is 26.5 mm.
The Aggregate Impact Value shall not exceed 35%.
The combined flakiness and elongation index of aggregate shall not be more than 35%.
iDesign Engineering Services provides CAD/CAE engineering solutions using software like ANSYS, ABAQUS, LS-DYNA, and Hypermesh. The company has expertise in structural, mechanical, automotive and aerospace design. Key projects include analysis of automotive and aircraft structures, software development, and analysis of geo-technical projects involving soil, shoring, caissons, and temporary structures. The document provides details on the promoter's qualifications and experience, important projects, individual engineer capabilities, and the services offered in areas like structural engineering, geo-technical engineering, and computer aided engineering.
IRJET- Flexural Behaviour of RCC Beam with Partially Replaced Concrete be...IRJET Journal
This document summarizes an experimental study that investigated the flexural behavior of reinforced concrete beams with partially replaced concrete below the neutral axis. Six groups of beams were tested: 1) control beams made of M-25 concrete, 2) beams with M-25 concrete above the neutral axis and M-20 concrete below, 3) beams with M-25 above and M-15 below, 4) beams with M-25 concrete and a hollow pipe below the neutral axis, 5) beams with M-25/M-20 concrete and a hollow pipe below, and 6) beams with M-25/M-15 concrete and a hollow pipe below. The study found that beams with lower grade concrete or a hollow section below the
This presentation summarizes the key aspects of one-way slab design. It defines one-way slabs as having an aspect ratio of 2:1 or greater, with bending primarily along the long axis. The presentation discusses the types of one-way slabs including solid, hollow, and ribbed. It also outlines the design considerations for one-way slabs according to the ACI code, including minimum thickness, reinforcement ratios, and bar spacing. An example problem demonstrates how to design a one-way slab for a given set of loading and dimensional conditions.
This presentation summarizes the key aspects of one-way slab design:
1) One-way slabs have an aspect ratio of 2:1 or greater, where bending occurs primarily along the long axis. They can be solid, hollow, or ribbed.
2) Design and analysis treats a unit strip of the slab as a rectangular beam of unit width and the slab thickness as the depth.
3) The ACI code specifies minimum slab thickness, concrete cover, span length, bar spacing, reinforcement ratios, and other design requirements.
4) An example problem demonstrates the design process, calculating loads, moments, minimum reinforcement, and checking the proposed slab thickness.
5) One-
The document provides an overview of one-way slab design. It defines one-way slabs as having an aspect ratio of 2:1 or greater, with bending primarily in one direction. Types of one-way slabs include solid, hollow, and ribbed slabs. The document discusses applications of the L/B ratio, loading conditions, analysis approach by considering strips as beams, and ACI code specifications for one-way slab design including minimum thickness, reinforcement ratios, and an example problem solution.
1) One-way slabs are reinforced concrete slabs that are primarily supported on two sides and bending occurs mainly in one direction.
2) They have an aspect ratio of length to width of 2:1 or greater. One-way slabs can be solid, hollow, or ribbed.
3) The ACI code provides specifications for one-way slab design including minimum thickness, concrete cover, span length, bar spacing, reinforcement ratios, and design examples.
Pt slab design philosophy with slides and pictures showing benefitPerwez Ahmad
This document summarizes the history and development of post-tensioned flat slab construction. It began with early research and development of prestressing in Europe in the 1920s-1930s to allow for longer bridge spans. Prestressing was later applied to other structures like aircraft hangars and then to flat slab construction in the 1950s. Post-tensioned flat slabs provide benefits over reinforced concrete flat slabs like reduced cracking, thinner slabs, and increased spans. The document discusses materials, design codes, comparisons to reinforced concrete, and examples of ongoing post-tensioned flat slab projects in Oman.
MoRT&H section for quality assurance Section 900.pptxaegdrnh53vup01
Dry Lean Concrete (DLC) is a Zero Slump concrete Sub-Base for wearing concrete course in conformity with the lines, grades and cross-sections shown on the drawings.
The design parameters of dry lean concrete sub-base say, width, thickness, grade of concrete, details of joints, etc. shall be as stipulated in the drawings.
CEMENT:-
Ultratech OPC 53 Grade conforming to IS 269 : 2015
AGGREGATES:-
Coarse Aggregate:-
Source:- Chikhli
Aggregates complying with IS 383.
Maximum size of the coarse aggregate is 26.5 mm.
The Aggregate Impact Value shall not exceed 35%.
The combined flakiness and elongation index of aggregate shall not be more than 35%.
iDesign Engineering Services provides CAD/CAE engineering solutions using software like ANSYS, ABAQUS, LS-DYNA, and Hypermesh. The company has expertise in structural, mechanical, automotive and aerospace design. Key projects include analysis of automotive and aircraft structures, software development, and analysis of geo-technical projects involving soil, shoring, caissons, and temporary structures. The document provides details on the promoter's qualifications and experience, important projects, individual engineer capabilities, and the services offered in areas like structural engineering, geo-technical engineering, and computer aided engineering.
IRJET- Flexural Behaviour of RCC Beam with Partially Replaced Concrete be...IRJET Journal
This document summarizes an experimental study that investigated the flexural behavior of reinforced concrete beams with partially replaced concrete below the neutral axis. Six groups of beams were tested: 1) control beams made of M-25 concrete, 2) beams with M-25 concrete above the neutral axis and M-20 concrete below, 3) beams with M-25 above and M-15 below, 4) beams with M-25 concrete and a hollow pipe below the neutral axis, 5) beams with M-25/M-20 concrete and a hollow pipe below, and 6) beams with M-25/M-15 concrete and a hollow pipe below. The study found that beams with lower grade concrete or a hollow section below the
The document discusses the analysis and design of different types of slabs in reinforced concrete structures. It describes one-way slabs, which act as a series of parallel beams, and two-way slabs, which are supported on all four edges. Two-way slabs can be edge-supported by beams or columns. The minimum thickness, reinforcement requirements, and design procedures are provided for one-way and two-way slabs according to code specifications. Various examples are also presented to illustrate how to analyze and design one-way and two-way slabs.
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.
Finite Element Analysis of RCC Beam with Rectangular Openings Strengthed by D...shaikkhaleel28
Openings in the web of RCC beam provides vital role for the passage of electrical and mechanical passages. Due to the opening in the beam causes the reduction in the stiffness also leads to cracking, more deflection loss of load bearing capacity near the opening of the beam. To avoid these problems strengthening of the opening with different frp’s have tested in this study. A nonlinear geometrical analysis of RCC beam of size 450 by 230 with different size of rectangular openings like 200 by 100, 250 by 100 & 300 by 100 are near to the support are analysed with FEM (Mechanical APDL software) strengthen with different types of frp’s like CFRP, E- GLASS EPOXY, S- GLASS EPOXY, FRP, KELVAR -49 (ARAMID EPOXY) are studied with principal stresses (compressive & tensile), displacement in vertical direction , elastic strain in y direction , shear failure & ultimate load bearing capacity of strengthen beam and un strengthen beam near the opening element of the beam results have been studied. To avoid the shear failure of the beam more shear reinforcement is provided to the beam based on the design approach given by AIJ Architectural Institute of Japan. Using material model like LINK 180 for reinforcement, SOLID 65 for concrete, SOLID 45 for the different types of frp’s, and using of Fe 550 for reinforcement, these models are used for the modelling and meshing of the RCC beam with rectangular opening strengthen with different frp’s. Finally the crack pattern, size of crack load at which shear failure occurred is studied in these under different frp’s strengthening near the element of rectangular opening
Key Words: Mechanical APDL, nonlinear geometric analysis, FRP’S,CFRP, E-GLASS EPOXY, S- GLASS EPOXY, KELVAR-49, LINK 180, SOLID 65 & 45.
Introduction - Design of Structure - 1.pdfUmarSaba1
This document discusses reinforced concrete structures and their design. It covers various reinforced concrete elements like beams, slabs, columns and footings. It describes properties of reinforced concrete and its advantages over plain concrete. It discusses design philosophies and failure modes. It also covers concrete mix design and grades of concrete and steel used in reinforced concrete structures. Reinforcement details for different elements are presented along with their behavior under loads. American Society of Civil Engineers code of ethics for engineers is also mentioned. References from ProQuest and open online resources are provided.
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
Atecon products focus on solving the dilemma on how to guarantee the proper cover or distancing between the metallic structure (rebar) and the terrain or formwork.
In any type of of construction site our Accessories will help you achieve better efficiencies, security and productivity
Flat slabs were originally invented in the U.S. in 1906 and load tested between 1910-1920. They are reinforced concrete slabs supported by columns without beams. Flat slabs offer advantages like reduced construction costs, faster construction, and greater architectural freedom. They are classified as solid flat slab, solid flat slab with drop panels, solid flat slab with column heads, or banded flat slab. Analysis and design of flat slabs involves distributing moments from equivalent frame analysis to slab components and checking shear and punching resistance.
This document discusses the analysis and design of concrete floor systems. It begins with an overview of basic design steps for slabs, including recalling design procedures for shear and flexure. It then classifies different types of concrete floor systems such as one-way slabs, two-way slabs, flat plates, and joist systems. The document provides examples of analyzing and designing a one-way slab using the ACI approximate method and discussing the effect of beam spacing on slab moments. It concludes with references for further information.
This study analyzes the strengthening of reinforced concrete beams with openings using basalt fiber-reinforced polymer (BFRP) composites in the software ABAQUS. Five beams were modeled: a solid control beam, two beams with a single opening, and two with double openings. The opened beams were unstrengthened or wrapped with BFRP. All beams were simply supported and loaded at the midpoint. The load capacity and deflection of each beam were calculated and compared. Beams with openings showed reduced load capacity compared to the solid beam. Wrapping openings with BFRP increased load capacity, with double openings seeing greater recovery when strengthened. The ABAQUS models underestimated deflections compared to theoretical values, but
Retrofitting of Bridge with Voided Slab to raise the Deck LevelIRJET Journal
The document discusses retrofitting an existing bridge by casting a voided slab over the existing deck slab. A voided slab is lighter than a solid slab and can reduce the self-weight and cost of the structure. Polystyrene boxes are placed on the deck slab and filled with concrete to form voids above. This allows increasing the road level without overloading the bridge girders. The voided slab is modeled in STAAD Pro to analyze bending moments and check the design is adequate. The voided slab reduces the weight and cost of construction compared to a solid slab.
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.
IRJET- An Experimental Study on Flexural Strength of Bubble Deck SlabIRJET Journal
1) The document presents an experimental study on the flexural strength of bubble deck slabs compared to conventional slabs.
2) Four slabs were cast - one conventional slab and three bubble deck slabs with varying numbers of hollow plastic balls.
3) Single point load tests were performed on the slabs using a universal testing machine. The load carrying capacity, load-deflection behavior, and flexural strength were analyzed and compared between the slab types.
4) The results showed that the load carrying capacity, flexural strength, and load-deflection behavior of the bubble deck slabs were similar to the conventional slab, demonstrating that replacing concrete with hollow balls does not negatively impact strength.
Detailed Power point presentation on Implementation of 4 lane Cable Stayed Road over bridge at Bardhman- a future fast track model for construction over busy and longer Railway yards in India
Comparative Analysis of RCC and Composite Building Subjected to Lateral LoadIRJET Journal
1) The document compares the seismic performance of reinforced concrete (RCC) and composite buildings subjected to lateral loads through modeling and analysis.
2) Six building models were analyzed - three RCC and three composite structures. The composite structures performed better in terms of lower displacements, drifts, and base shear compared to the RCC structures.
3) The analysis found that composite structures have higher stiffness, lower displacement and drift within permissible limits compared to RCC structures. Their base shear was also lower, indicating better seismic performance.
The document discusses principles and concepts related to reinforced cement concrete (RCC). It describes RCC as concrete in which steel reinforcement is embedded to take tensile stresses. The steel is generally round bars of diameters between 6mm to 32mm. RCC is equally strong in tension, compression, and shear. It also discusses RCC mix proportions, uses of RCC in foundations, beams, slabs etc., load transfer, mixing of concrete, formwork, curing and stripping times.
This document provides information on reinforcement detailing according to Eurocode 2 (EC2). It begins with an overview of the structural Eurocodes and the contents of EC2. Key topics covered in more detail include reinforcement properties, minimum cover requirements, crack control, bar spacing, bond stress calculations, and the design of anchorage and lap lengths. Worked examples are provided to demonstrate how to calculate the design anchorage length for tension reinforcement according to the equations and factors specified in EC2. In summary, the document outlines the main requirements for reinforcement detailing in concrete structures as defined by EC2.
This document provides an overview of bubble deck slabs. It discusses that bubble deck slabs are constructed using high density polyethylene hollow spheres placed between steel reinforcement on the top and bottom of the slab. This creates voids and reduces the slab weight by 30-50% compared to conventional solid slabs. The advantages are less material usage, faster construction, reduced costs, and lower environmental impact through less emissions. There are three main types of bubble deck slabs: filigree elements, reinforcement modules, and finished planks. The document compares the structural behavior and costs of bubble deck slabs to solid slabs.
The document discusses different types of reinforcement used in concrete construction including hot rolled deformed bars, mild steel plain bars, cold worked steel reinforcement, and prestressing steel. It also discusses ready mixed concrete (RMX), the working process of RMX, advantages and disadvantages compared to site mixed concrete. The document provides information on major RMX companies. It also discusses insulating concrete formwork (ICF), crosswall construction formwork, and photos of ICF site installation.
This document provides an overview of modeling a three-story L-shaped concrete building in ETABS. Key steps include generating grids, drawing wall objects to form bays, modeling an elevator core using fine grid snapping, assigning properties like slab thickness and loads, and performing both static and earthquake analysis according to UBC97 code. The example demonstrates ETABS capabilities for integrated object-based modeling of concrete structures with features like automatic load transfer, shear wall design, and modeling of floor diaphragms and cores.
TRENDS IN SOLID WASTE MANAGEMENT Digital Technologies can play a crucial role in making Metro Rizal's waste management systems more circular and sustainable
The document discusses the analysis and design of different types of slabs in reinforced concrete structures. It describes one-way slabs, which act as a series of parallel beams, and two-way slabs, which are supported on all four edges. Two-way slabs can be edge-supported by beams or columns. The minimum thickness, reinforcement requirements, and design procedures are provided for one-way and two-way slabs according to code specifications. Various examples are also presented to illustrate how to analyze and design one-way and two-way slabs.
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.
Finite Element Analysis of RCC Beam with Rectangular Openings Strengthed by D...shaikkhaleel28
Openings in the web of RCC beam provides vital role for the passage of electrical and mechanical passages. Due to the opening in the beam causes the reduction in the stiffness also leads to cracking, more deflection loss of load bearing capacity near the opening of the beam. To avoid these problems strengthening of the opening with different frp’s have tested in this study. A nonlinear geometrical analysis of RCC beam of size 450 by 230 with different size of rectangular openings like 200 by 100, 250 by 100 & 300 by 100 are near to the support are analysed with FEM (Mechanical APDL software) strengthen with different types of frp’s like CFRP, E- GLASS EPOXY, S- GLASS EPOXY, FRP, KELVAR -49 (ARAMID EPOXY) are studied with principal stresses (compressive & tensile), displacement in vertical direction , elastic strain in y direction , shear failure & ultimate load bearing capacity of strengthen beam and un strengthen beam near the opening element of the beam results have been studied. To avoid the shear failure of the beam more shear reinforcement is provided to the beam based on the design approach given by AIJ Architectural Institute of Japan. Using material model like LINK 180 for reinforcement, SOLID 65 for concrete, SOLID 45 for the different types of frp’s, and using of Fe 550 for reinforcement, these models are used for the modelling and meshing of the RCC beam with rectangular opening strengthen with different frp’s. Finally the crack pattern, size of crack load at which shear failure occurred is studied in these under different frp’s strengthening near the element of rectangular opening
Key Words: Mechanical APDL, nonlinear geometric analysis, FRP’S,CFRP, E-GLASS EPOXY, S- GLASS EPOXY, KELVAR-49, LINK 180, SOLID 65 & 45.
Introduction - Design of Structure - 1.pdfUmarSaba1
This document discusses reinforced concrete structures and their design. It covers various reinforced concrete elements like beams, slabs, columns and footings. It describes properties of reinforced concrete and its advantages over plain concrete. It discusses design philosophies and failure modes. It also covers concrete mix design and grades of concrete and steel used in reinforced concrete structures. Reinforcement details for different elements are presented along with their behavior under loads. American Society of Civil Engineers code of ethics for engineers is also mentioned. References from ProQuest and open online resources are provided.
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
Atecon products focus on solving the dilemma on how to guarantee the proper cover or distancing between the metallic structure (rebar) and the terrain or formwork.
In any type of of construction site our Accessories will help you achieve better efficiencies, security and productivity
Flat slabs were originally invented in the U.S. in 1906 and load tested between 1910-1920. They are reinforced concrete slabs supported by columns without beams. Flat slabs offer advantages like reduced construction costs, faster construction, and greater architectural freedom. They are classified as solid flat slab, solid flat slab with drop panels, solid flat slab with column heads, or banded flat slab. Analysis and design of flat slabs involves distributing moments from equivalent frame analysis to slab components and checking shear and punching resistance.
This document discusses the analysis and design of concrete floor systems. It begins with an overview of basic design steps for slabs, including recalling design procedures for shear and flexure. It then classifies different types of concrete floor systems such as one-way slabs, two-way slabs, flat plates, and joist systems. The document provides examples of analyzing and designing a one-way slab using the ACI approximate method and discussing the effect of beam spacing on slab moments. It concludes with references for further information.
This study analyzes the strengthening of reinforced concrete beams with openings using basalt fiber-reinforced polymer (BFRP) composites in the software ABAQUS. Five beams were modeled: a solid control beam, two beams with a single opening, and two with double openings. The opened beams were unstrengthened or wrapped with BFRP. All beams were simply supported and loaded at the midpoint. The load capacity and deflection of each beam were calculated and compared. Beams with openings showed reduced load capacity compared to the solid beam. Wrapping openings with BFRP increased load capacity, with double openings seeing greater recovery when strengthened. The ABAQUS models underestimated deflections compared to theoretical values, but
Retrofitting of Bridge with Voided Slab to raise the Deck LevelIRJET Journal
The document discusses retrofitting an existing bridge by casting a voided slab over the existing deck slab. A voided slab is lighter than a solid slab and can reduce the self-weight and cost of the structure. Polystyrene boxes are placed on the deck slab and filled with concrete to form voids above. This allows increasing the road level without overloading the bridge girders. The voided slab is modeled in STAAD Pro to analyze bending moments and check the design is adequate. The voided slab reduces the weight and cost of construction compared to a solid slab.
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.
IRJET- An Experimental Study on Flexural Strength of Bubble Deck SlabIRJET Journal
1) The document presents an experimental study on the flexural strength of bubble deck slabs compared to conventional slabs.
2) Four slabs were cast - one conventional slab and three bubble deck slabs with varying numbers of hollow plastic balls.
3) Single point load tests were performed on the slabs using a universal testing machine. The load carrying capacity, load-deflection behavior, and flexural strength were analyzed and compared between the slab types.
4) The results showed that the load carrying capacity, flexural strength, and load-deflection behavior of the bubble deck slabs were similar to the conventional slab, demonstrating that replacing concrete with hollow balls does not negatively impact strength.
Detailed Power point presentation on Implementation of 4 lane Cable Stayed Road over bridge at Bardhman- a future fast track model for construction over busy and longer Railway yards in India
Comparative Analysis of RCC and Composite Building Subjected to Lateral LoadIRJET Journal
1) The document compares the seismic performance of reinforced concrete (RCC) and composite buildings subjected to lateral loads through modeling and analysis.
2) Six building models were analyzed - three RCC and three composite structures. The composite structures performed better in terms of lower displacements, drifts, and base shear compared to the RCC structures.
3) The analysis found that composite structures have higher stiffness, lower displacement and drift within permissible limits compared to RCC structures. Their base shear was also lower, indicating better seismic performance.
The document discusses principles and concepts related to reinforced cement concrete (RCC). It describes RCC as concrete in which steel reinforcement is embedded to take tensile stresses. The steel is generally round bars of diameters between 6mm to 32mm. RCC is equally strong in tension, compression, and shear. It also discusses RCC mix proportions, uses of RCC in foundations, beams, slabs etc., load transfer, mixing of concrete, formwork, curing and stripping times.
This document provides information on reinforcement detailing according to Eurocode 2 (EC2). It begins with an overview of the structural Eurocodes and the contents of EC2. Key topics covered in more detail include reinforcement properties, minimum cover requirements, crack control, bar spacing, bond stress calculations, and the design of anchorage and lap lengths. Worked examples are provided to demonstrate how to calculate the design anchorage length for tension reinforcement according to the equations and factors specified in EC2. In summary, the document outlines the main requirements for reinforcement detailing in concrete structures as defined by EC2.
This document provides an overview of bubble deck slabs. It discusses that bubble deck slabs are constructed using high density polyethylene hollow spheres placed between steel reinforcement on the top and bottom of the slab. This creates voids and reduces the slab weight by 30-50% compared to conventional solid slabs. The advantages are less material usage, faster construction, reduced costs, and lower environmental impact through less emissions. There are three main types of bubble deck slabs: filigree elements, reinforcement modules, and finished planks. The document compares the structural behavior and costs of bubble deck slabs to solid slabs.
The document discusses different types of reinforcement used in concrete construction including hot rolled deformed bars, mild steel plain bars, cold worked steel reinforcement, and prestressing steel. It also discusses ready mixed concrete (RMX), the working process of RMX, advantages and disadvantages compared to site mixed concrete. The document provides information on major RMX companies. It also discusses insulating concrete formwork (ICF), crosswall construction formwork, and photos of ICF site installation.
This document provides an overview of modeling a three-story L-shaped concrete building in ETABS. Key steps include generating grids, drawing wall objects to form bays, modeling an elevator core using fine grid snapping, assigning properties like slab thickness and loads, and performing both static and earthquake analysis according to UBC97 code. The example demonstrates ETABS capabilities for integrated object-based modeling of concrete structures with features like automatic load transfer, shear wall design, and modeling of floor diaphragms and cores.
TRENDS IN SOLID WASTE MANAGEMENT Digital Technologies can play a crucial role in making Metro Rizal's waste management systems more circular and sustainable
My Fashion PPT is my presentation on fashion and TrendssMedhaRana1
This Presentation is in one way a guide to master the classic trends and become a timeless beauty. This will help the beginners who are out with the motto to excel and become a Pro Fashionista, this Presentation will provide them with easy but really useful ten ways to master the art of styles. Hope This Helps.
Value based approach to heritae conservation -.docxJIT KUMAR GUPTA
Text defines the role, importance and relevance of value based approach in identification, preservation and conservation of heritage to make it more productive and community centric.
Menus are ubiquitous in websites and applications of all types. They are critical to accessing the information and actions that users need, yet they can be very frustrating to use. In our UX consulting practice, many clients have come to us for help solving problems with menus, such as scaling to handle long lists of options, and overcoming usability issues with hover and flyout menus. In this presentation we’ll review what we have learned about best practices for designing mega menus, context menus, hamburger menus, full page menus and other types, and share case studies of menu redesigns we have worked on for enterprise applications, mobile apps, and information-rich websites.
This is Stage one of my Future Deep Strike Aircraft project to develop a replacement for the FB-111 / F-111F / F-15E and B-1B. This stage covers requirements and threats. Stage 2 will cover Design Studies, and the CCA Wingman.
Update 33 models(General Diode ) in SPICE PARK(JUN2024)
25701321110.pptx
1. WELCOME TO THE PRESENTATION ON
“ONE WAY SLAB DESIGN”
Design of Reinforced Concrete Structure
Subject Code – CE(PC)501
Prepared by :- PRABIR RUIDAS
Roll no :-25701321110
Year :- 2022-2023
1
Camellia Institute of Technology & management
2. SLAB
Slabs are an important
structural component
where prestressing is
applied.
Slabs are used to provide
flat or useful surfaces.
2
Camellia Institute of Technology & management
4. ONE WAY SLAB
One-way slabs are those slabs with an aspect ratio in plan of
2:1 or greater, in which bending is primarily about the long
axis.
So, the slab is one way where L/B ≥ 2.
4
Camellia Institute of Technology & management
5. DESIGN & ANALYSIS
For analysis there is a term as….
“ONE WAY SLAB IS A SET OF A RECTANGULAR
BEAMS SIDE BY SIDE”
But How ???
Lets find it…..
5
Camellia Institute of Technology & management
6. For purpose of analysis and design a
unit strip of such a slab is cut out ,
which may be considered as a
rectangular beam of unit width (say
1ft or 1m) with a depth ‘h’ equal to
the thickness of the slab and a span
‘l’ equal to the distance between
supported edges.
The strip can be analyzed by the
methods that were used for
rectangular beams.
So that term is clear.
6
Camellia Institute of Technology & management
7. MINIMUM SLAB THICKNESS
To control deflection, ACI Code 9.5.2.1 specifies minimum
thickness values for one-way solid slabs.
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Camellia Institute of Technology & management
8. MINIMUM CONCRETE COVER
According to ACI Code 7.7.1, the following minimum concrete cover is to be provided:
a. Concrete not exposed to weather or in contact with ground:
• Larger than Ø 36 mm bar ---------------------------------------------4 cm
• Ø 36 mm and smaller bars -------------------------------------------2 cm
b. Concrete exposed to weather or in contact with ground:
• Ø 19 mm and larger bars 5 cm
Ø 16 mm and smaller bars 4 cm
c. Concrete cast against and permanently exposed to earth -----------7.5 cm
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Camellia Institute of Technology & management
9. EXAMPLE PROBLEM
A reinforced concrete slab is built integrally with its supports
and consists of equal span of 15 ft. The service live load is 100
psf and 4000 psi concrete is specified for use with steel with a
yield stress equal to 60000 psi. Design the slab following the
provisions of the ACI code.
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Camellia Institute of Technology & management
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