This document provides information for designing a 350KL overhead water tank at a university campus. Key details include:
- The tank will be an Intze tank with a column and brace staging structure up to a height of 25m.
- Water demand calculations estimate a required capacity of 350KL based on current and projected student population.
- Design requirements specify the grade of concrete and steel to be used, reinforcement ratios, and that the working stress method be used for the tank structure while limit state design is used for other components like columns and foundations.
- Foundations will be circular ring and raft foundations based on soil testing showing a safe bearing capacity of 100kN/m2.
- Staging height is
This document summarizes the design of a single reinforced concrete corbel according to ACI 318-05. The corbel is 300mm wide and 500mm deep with 35MPa concrete and 415MPa steel reinforcement. It was designed to resist a vertical load of 370kN applied 100mm from the face of the column. The design includes checking the vertical load capacity, calculating the required shear friction and main tension reinforcement, and designing the horizontal reinforcement. The provided reinforcement of 3 No.6 bars for tension and 3 No.3 link bars at 100mm spacing was found to meet all design requirements.
Tension members can fail due to three modes:
1. Gross section yielding, where the entire cross-section yields
2. Net section yielding, where the reduced cross-section after subtracting holes yields
3. Block shear failure, which also occurs in welded connections along planes of shear and tension
The design strength is the minimum of the strengths from these three failure modes. Block shear is demonstrated using a failed gusset plate connection with failure planes around the weld. The problem determines the tensile strength of a plate connected to a gusset plate, calculating the strength based on gross section yielding, net section yielding, and block shear failure.
This document summarizes the design of a circular overhead water tank with the following key details:
- The tank will be located in Panchampalli village and have a capacity of 750 cubic meters to serve a population of 1873 people.
- The tank dimensions include a 15 meter height and 12.6 meter diameter.
- The structural components including the dome, wall, ring beam, floor slab, columns, and footings will be designed using the Limit State method.
- STAAD and AutoCAD software will be used to analyze and detail the structural design. Reinforcement will be designed to resist forces from water pressure and other loads.
The document provides information about a 21 meter long prestressed concrete pile driven into sand. The pile has an allowable working load of 502 kN, with an octagonal cross-section of 0.356 meters diameter and area of 0.1045 m^2. Skin resistance supports 350 kN of the load and point bearing the rest. The document requests calculating the elastic settlement of the pile given its properties, the load distribution, and soil parameters.
DESIGN AND ANALYSIS OF G+3 RESIDENTIAL BUILDING BY S.MAHAMMAD FROM RAJIV GAND...Mahammad2251
Structural design is the primary aspect of civil engineering. The foremost basic in
structural engineering is the design of simple basic components and members of a building viz., Slabs,
Beams, Columns and Footings. In order to design them, it is important to first obtain the plan of the
particular building. Thereby depending on the suitability; plan layout of beams and the position of
columns are fixed.
Design of overhead RCC rectangular water tankShoaib Wani
1) The document presents the design of a rectangular overhead water tank using reinforced concrete.
2) Rectangular tanks are used for smaller storage capacities, while circular tanks are used for larger capacities.
3) The designed RCC rectangular tank presented can store up to 240,000 liters of water.
4) Both theoretical design calculations and STAAD Pro modeling were used to analyze and design the tank.
This chapter of the SAFE user's guide provides an overview of the program's graphical user interface. The interface includes a main window, title bars, menu bar, toolbars, up to four display windows, status bar, and mouse pointer position display. It describes the purpose and basic functions of each component to orient the user to the layout and navigation of the program.
The document describes the design of a stepped footing to support a column with an unfactored load of 800 kN. A square footing with dimensions of 2.1m x 2.1m is designed with two 300mm steps. Reinforcement of #12 bars at 150mm c/c is provided. Checks are performed for bending moment, one-way shear, two-way shear, and development length which all meet code requirements. Therefore, the stepped footing design is adequate to support the given column load.
This document summarizes the design of a single reinforced concrete corbel according to ACI 318-05. The corbel is 300mm wide and 500mm deep with 35MPa concrete and 415MPa steel reinforcement. It was designed to resist a vertical load of 370kN applied 100mm from the face of the column. The design includes checking the vertical load capacity, calculating the required shear friction and main tension reinforcement, and designing the horizontal reinforcement. The provided reinforcement of 3 No.6 bars for tension and 3 No.3 link bars at 100mm spacing was found to meet all design requirements.
Tension members can fail due to three modes:
1. Gross section yielding, where the entire cross-section yields
2. Net section yielding, where the reduced cross-section after subtracting holes yields
3. Block shear failure, which also occurs in welded connections along planes of shear and tension
The design strength is the minimum of the strengths from these three failure modes. Block shear is demonstrated using a failed gusset plate connection with failure planes around the weld. The problem determines the tensile strength of a plate connected to a gusset plate, calculating the strength based on gross section yielding, net section yielding, and block shear failure.
This document summarizes the design of a circular overhead water tank with the following key details:
- The tank will be located in Panchampalli village and have a capacity of 750 cubic meters to serve a population of 1873 people.
- The tank dimensions include a 15 meter height and 12.6 meter diameter.
- The structural components including the dome, wall, ring beam, floor slab, columns, and footings will be designed using the Limit State method.
- STAAD and AutoCAD software will be used to analyze and detail the structural design. Reinforcement will be designed to resist forces from water pressure and other loads.
The document provides information about a 21 meter long prestressed concrete pile driven into sand. The pile has an allowable working load of 502 kN, with an octagonal cross-section of 0.356 meters diameter and area of 0.1045 m^2. Skin resistance supports 350 kN of the load and point bearing the rest. The document requests calculating the elastic settlement of the pile given its properties, the load distribution, and soil parameters.
DESIGN AND ANALYSIS OF G+3 RESIDENTIAL BUILDING BY S.MAHAMMAD FROM RAJIV GAND...Mahammad2251
Structural design is the primary aspect of civil engineering. The foremost basic in
structural engineering is the design of simple basic components and members of a building viz., Slabs,
Beams, Columns and Footings. In order to design them, it is important to first obtain the plan of the
particular building. Thereby depending on the suitability; plan layout of beams and the position of
columns are fixed.
Design of overhead RCC rectangular water tankShoaib Wani
1) The document presents the design of a rectangular overhead water tank using reinforced concrete.
2) Rectangular tanks are used for smaller storage capacities, while circular tanks are used for larger capacities.
3) The designed RCC rectangular tank presented can store up to 240,000 liters of water.
4) Both theoretical design calculations and STAAD Pro modeling were used to analyze and design the tank.
This chapter of the SAFE user's guide provides an overview of the program's graphical user interface. The interface includes a main window, title bars, menu bar, toolbars, up to four display windows, status bar, and mouse pointer position display. It describes the purpose and basic functions of each component to orient the user to the layout and navigation of the program.
The document describes the design of a stepped footing to support a column with an unfactored load of 800 kN. A square footing with dimensions of 2.1m x 2.1m is designed with two 300mm steps. Reinforcement of #12 bars at 150mm c/c is provided. Checks are performed for bending moment, one-way shear, two-way shear, and development length which all meet code requirements. Therefore, the stepped footing design is adequate to support the given column load.
This document summarizes the design of a one-way slab for a multi-story building. Key steps include:
1) Determining the effective span is 3.125m based on the room dimensions and support thickness.
2) Calculating the factored bending moment of 5.722 kNm/m based on the loads and effective span.
3) Checking that the provided depth of 150mm is greater than the required depth of 45.53mm.
4) Sizing the main reinforcement as 130mm^2 based on the factored moment and concrete properties.
5) Specifying 10mm diameter bars spaced at 300mm centers along the shorter span.
1. The document discusses the design of an Intze water storage tank for GRIET campus using manual calculations and STAAD Pro software.
2. It provides background on Intze tanks and their advantages over normal tanks. Design considerations like forces, materials and stresses are covered.
3. The existing water supply situation and need for a new tank in the campus is studied. Dimensions and reinforcement details of the designed tank are presented.
4. Both manual and STAAD analysis show the design is stable with no member failures. The manual design is adopted for construction.
1. The document discusses the design and analysis of storage reservoirs and overhead tanks. It covers various types of tanks, design considerations for concrete mixes, crack development remedies, permissible stresses, and reinforcement requirements.
2. Methods for analyzing circular and rectangular tanks are presented. For circular tanks, designs consider rigid versus flexible joints with the base slab. Approximate methods analyze the bottom portion as cantilever and the rest as resisting pressure through horizontal forces.
3. Rectangular tank analysis depends on the length-breadth ratio, treating short walls as bending horizontally between long walls which transfer pressure as tension.
This document provides guidance on the design of lacing and battens for built-up compression members. It discusses the key design considerations and calculations for both single and double lacing systems, including the angle of inclination, slenderness ratio, effective lacing length, bar width and thickness. Similar guidelines are given for battens, covering spacing, thickness, effective depth, transverse shear and overlap. The document also includes an example problem on designing a slab foundation for a column with given load and material properties.
This document provides design requirements for lacing and battening systems used in steel structural elements. It discusses two types of lacing systems - single and double. It outlines 9 design requirements for lacing per Indian code IS 800, including angle of inclination, slenderness ratio, effective length, width/thickness, transverse shear force, strength checks, and end connections. It also discusses 7 design requirements for battening systems, including transverse shear force calculation, slenderness ratio, spacing, thickness, effective depth, overlap for welded connections, and notes battening offers less shear resistance than lacing.
This document provides details on the design of staircases, including:
1. It describes the typical components of a staircase like flights, landings, risers, treads, nosings, waist slabs, and soffits.
2. It discusses different types of staircases like straight, quarter turn, dog-legged, open well, spiral and helicoidal.
3. It classifies staircases structurally into those with stair slabs spanning transversely or longitudinally and provides examples of each type.
4. It provides an example calculation for the design of a waist slab spanning longitudinally, including loading, bending moment calculation, reinforcement design and checks.
Introduction & under ground water tank problemdhineshkumar002
The document discusses the design of an underground rectangular reinforced concrete water tank. It provides steps for calculating earth pressure, determining member thicknesses, and designing reinforcement for the long walls, short walls, and roof slab. The long walls are designed as vertical cantilevers and the short walls as continuous slabs. Reinforcement is checked for bending and cracking stresses. The example shows calculating load intensities, bending moments, required depths and areas of steel for the tank walls and slab according to code specifications.
This document discusses the design of an overhead circular water tank with a flat base. It begins with introducing water tanks and the different types, including based on placement and shape. It then lists the objectives of studying the analysis and design of elevated water tanks according to design codes. Various support systems for rectangular and circular tanks are described, including using masonry shafts, reinforced concrete towers, or columns. The key components of an elevated water tank design are outlined as the cover slab, top ring beam, cylindrical wall, and base slab. Design of the staging and foundation are also considered.
This document discusses various types of beam and column connections used in steel structures. It describes rigid, pinned, and semi-rigid connections. It also discusses different beam to beam connections like web cleat angle, clip and seat angle, and web and seat angle connections. Beam to column connections including web angle, clip and seat angle stiffened and unstiffened are explained. Finally, it covers moment resistant connections like eccentrically loaded, light moment and heavy moment connections and provides examples of designing some typical connections.
This document discusses the design of two-way floor slab systems. It compares the behavior of one-way and two-way slabs, describing how two-way slabs carry load in two directions versus one direction for one-way slabs. Different two-way slab systems like flat plates, waffle slabs, and ribbed slabs are described. Methods for analyzing two-way slabs include direct design, equivalent frame, elastic, plastic, and nonlinear analysis. Design considerations like minimum slab thickness are discussed along with examples calculating thickness.
Design of Reinforced Concrete Structure (IS 456:2000)MachenLink
This is the 1st Lecture Series on Design Reinforced Cement Concrete (IS 456 -2000).
In this video, you will learn about the objective of structural designing and then basic properties of concrete and steel.
Concrete properties like...
1. Grade of Concrete
2. Modulus of Elasticity
3. Characteristic Strength
4. Tensile Strength
5. Creep and Shrinkage
6. Durability
Reinforced Steel Properties....
1. Grade and types of steel
2. Yield Strength of Mild Steel and HYSD Bars
The document discusses the design of columns and footings in concrete structures. It covers various topics related to column design including classification of columns based on type of reinforcement, loading, and slenderness ratios. Short columns subjected to axial loads with or without eccentricity are analyzed. Design aspects such as effective length, minimum reinforcement requirements, cover and transverse tie spacing are described based on code specifications. Equations for equilibrium of uniformly loaded short columns are also presented.
The document discusses the design and estimation of an Intze tank. It includes an abstract that describes the need for water storage and supply. It then covers various topics related to designing water tanks such as estimating water demand based on population and consumption rates, classifying different types of water tanks, design requirements for concrete water tanks, and the design of specific elements like domes and overhead tanks. The document aims to provide theory and guidelines for designing a reinforced concrete elevated circular water tank with a domed roof and conical base using the working stress method.
Prestressed concrete uses tensioned steel to put concrete in compression and improve its performance. Circular structures like pipes, tanks and poles are well-suited for circular prestressing using hoop tension to counteract internal fluid pressure. Pipes can be made through monolithic, two-stage or precast construction. Design considerations include stresses from handling, support conditions, working pressure and cracking. Tanks come in different shapes and are analyzed as shells. Poles are designed for various loads as vertical cantilevers with tapering cross-sections.
This document provides an overview of soils investigation and foundation design. It discusses the importance of soils investigation to evaluate subsurface conditions for construction projects. Various field and laboratory techniques are described for soils investigation, including test pits, boreholes, geophysical methods, and laboratory analysis. Factors influencing soil formation such as weathering and transportation are also covered. The document then discusses shallow foundation design, including bearing capacity theory, settlement analysis, and selection of appropriate foundation types based on subsurface conditions. Specific foundation types like spread footings, raft foundations, and their analysis are summarized.
Calulation of deflection and crack width according to is 456 2000Vikas Mehta
This document discusses the calculation of crack width in reinforced concrete flexural members. It provides information on:
1) Crack width is calculated to satisfy serviceability limits and is only relevant for Type 3 pre-stressed concrete members that crack under service loads.
2) Crack width depends on factors like amount of pre-stress, tensile stress in bars, concrete cover thickness, bar diameter and spacing, member depth and location of neutral axis, bond strength, and concrete tensile strength.
3) The method of calculation involves determining the shortest distance from the surface to a bar and using equations involving member depth, neutral axis depth, average strain at the surface level. Permissible crack widths are specified depending on exposure
The document compares the design of an Intze water tank using membrane design and continuity analysis methods. Membrane design assumes members act independently and are only subjected to direct stresses, while continuity analysis considers restraint at edges causing secondary stresses. For a 9 lakh liter tank, continuity analysis results in higher hoop forces, moments, and steel reinforcement compared to membrane design. A similar trend is seen for a 6 lakh liter tank, with continuity analysis giving higher stresses and reinforcement.
This document presents a summary of a presentation on analyzing and designing an RCC box culvert using ETABS. The presentation covers the objectives of determining loads, structurally designing the culvert, designing reinforcement, and analyzing the design in ETABS. It describes the culvert's design parameters from its hydraulic design and dimensions. It also details the typical reinforcement in the slab and walls. The conclusion recommends reinforcement sizes and validates the hand calculations with ETABS analysis results.
synopsis on design and estimation of intze tankganesh sharma
The document discusses the design and cost estimation of an elevated water tank for Rajkiya Engineering College in Azamgarh, India. It summarizes the relevant codes and methods for designing liquid retaining structures. The proposed tank will be an Intze tank designed using the working stress method for the tank elements and limit state method for other structural elements. Water demand calculations and material specifications are provided. The objective is to design a safe and economical tank to meet the current and future needs of the college.
The document describes an analysis and design software for overhead and ground water tanks. It analyzes and designs different tank types according to Indian standards. The software performs seismic and wind load calculations, designs tank components, and generates reports and drawings automatically. It allows single window input and covers analysis methods like membrane analysis, space frame analysis, and hydrodynamic analysis. The software can generate drawings of different tank types like conical, intze, cylindrical, and rectangular tanks for overhead and ground reservoirs.
This document summarizes the design of a one-way slab for a multi-story building. Key steps include:
1) Determining the effective span is 3.125m based on the room dimensions and support thickness.
2) Calculating the factored bending moment of 5.722 kNm/m based on the loads and effective span.
3) Checking that the provided depth of 150mm is greater than the required depth of 45.53mm.
4) Sizing the main reinforcement as 130mm^2 based on the factored moment and concrete properties.
5) Specifying 10mm diameter bars spaced at 300mm centers along the shorter span.
1. The document discusses the design of an Intze water storage tank for GRIET campus using manual calculations and STAAD Pro software.
2. It provides background on Intze tanks and their advantages over normal tanks. Design considerations like forces, materials and stresses are covered.
3. The existing water supply situation and need for a new tank in the campus is studied. Dimensions and reinforcement details of the designed tank are presented.
4. Both manual and STAAD analysis show the design is stable with no member failures. The manual design is adopted for construction.
1. The document discusses the design and analysis of storage reservoirs and overhead tanks. It covers various types of tanks, design considerations for concrete mixes, crack development remedies, permissible stresses, and reinforcement requirements.
2. Methods for analyzing circular and rectangular tanks are presented. For circular tanks, designs consider rigid versus flexible joints with the base slab. Approximate methods analyze the bottom portion as cantilever and the rest as resisting pressure through horizontal forces.
3. Rectangular tank analysis depends on the length-breadth ratio, treating short walls as bending horizontally between long walls which transfer pressure as tension.
This document provides guidance on the design of lacing and battens for built-up compression members. It discusses the key design considerations and calculations for both single and double lacing systems, including the angle of inclination, slenderness ratio, effective lacing length, bar width and thickness. Similar guidelines are given for battens, covering spacing, thickness, effective depth, transverse shear and overlap. The document also includes an example problem on designing a slab foundation for a column with given load and material properties.
This document provides design requirements for lacing and battening systems used in steel structural elements. It discusses two types of lacing systems - single and double. It outlines 9 design requirements for lacing per Indian code IS 800, including angle of inclination, slenderness ratio, effective length, width/thickness, transverse shear force, strength checks, and end connections. It also discusses 7 design requirements for battening systems, including transverse shear force calculation, slenderness ratio, spacing, thickness, effective depth, overlap for welded connections, and notes battening offers less shear resistance than lacing.
This document provides details on the design of staircases, including:
1. It describes the typical components of a staircase like flights, landings, risers, treads, nosings, waist slabs, and soffits.
2. It discusses different types of staircases like straight, quarter turn, dog-legged, open well, spiral and helicoidal.
3. It classifies staircases structurally into those with stair slabs spanning transversely or longitudinally and provides examples of each type.
4. It provides an example calculation for the design of a waist slab spanning longitudinally, including loading, bending moment calculation, reinforcement design and checks.
Introduction & under ground water tank problemdhineshkumar002
The document discusses the design of an underground rectangular reinforced concrete water tank. It provides steps for calculating earth pressure, determining member thicknesses, and designing reinforcement for the long walls, short walls, and roof slab. The long walls are designed as vertical cantilevers and the short walls as continuous slabs. Reinforcement is checked for bending and cracking stresses. The example shows calculating load intensities, bending moments, required depths and areas of steel for the tank walls and slab according to code specifications.
This document discusses the design of an overhead circular water tank with a flat base. It begins with introducing water tanks and the different types, including based on placement and shape. It then lists the objectives of studying the analysis and design of elevated water tanks according to design codes. Various support systems for rectangular and circular tanks are described, including using masonry shafts, reinforced concrete towers, or columns. The key components of an elevated water tank design are outlined as the cover slab, top ring beam, cylindrical wall, and base slab. Design of the staging and foundation are also considered.
This document discusses various types of beam and column connections used in steel structures. It describes rigid, pinned, and semi-rigid connections. It also discusses different beam to beam connections like web cleat angle, clip and seat angle, and web and seat angle connections. Beam to column connections including web angle, clip and seat angle stiffened and unstiffened are explained. Finally, it covers moment resistant connections like eccentrically loaded, light moment and heavy moment connections and provides examples of designing some typical connections.
This document discusses the design of two-way floor slab systems. It compares the behavior of one-way and two-way slabs, describing how two-way slabs carry load in two directions versus one direction for one-way slabs. Different two-way slab systems like flat plates, waffle slabs, and ribbed slabs are described. Methods for analyzing two-way slabs include direct design, equivalent frame, elastic, plastic, and nonlinear analysis. Design considerations like minimum slab thickness are discussed along with examples calculating thickness.
Design of Reinforced Concrete Structure (IS 456:2000)MachenLink
This is the 1st Lecture Series on Design Reinforced Cement Concrete (IS 456 -2000).
In this video, you will learn about the objective of structural designing and then basic properties of concrete and steel.
Concrete properties like...
1. Grade of Concrete
2. Modulus of Elasticity
3. Characteristic Strength
4. Tensile Strength
5. Creep and Shrinkage
6. Durability
Reinforced Steel Properties....
1. Grade and types of steel
2. Yield Strength of Mild Steel and HYSD Bars
The document discusses the design of columns and footings in concrete structures. It covers various topics related to column design including classification of columns based on type of reinforcement, loading, and slenderness ratios. Short columns subjected to axial loads with or without eccentricity are analyzed. Design aspects such as effective length, minimum reinforcement requirements, cover and transverse tie spacing are described based on code specifications. Equations for equilibrium of uniformly loaded short columns are also presented.
The document discusses the design and estimation of an Intze tank. It includes an abstract that describes the need for water storage and supply. It then covers various topics related to designing water tanks such as estimating water demand based on population and consumption rates, classifying different types of water tanks, design requirements for concrete water tanks, and the design of specific elements like domes and overhead tanks. The document aims to provide theory and guidelines for designing a reinforced concrete elevated circular water tank with a domed roof and conical base using the working stress method.
Prestressed concrete uses tensioned steel to put concrete in compression and improve its performance. Circular structures like pipes, tanks and poles are well-suited for circular prestressing using hoop tension to counteract internal fluid pressure. Pipes can be made through monolithic, two-stage or precast construction. Design considerations include stresses from handling, support conditions, working pressure and cracking. Tanks come in different shapes and are analyzed as shells. Poles are designed for various loads as vertical cantilevers with tapering cross-sections.
This document provides an overview of soils investigation and foundation design. It discusses the importance of soils investigation to evaluate subsurface conditions for construction projects. Various field and laboratory techniques are described for soils investigation, including test pits, boreholes, geophysical methods, and laboratory analysis. Factors influencing soil formation such as weathering and transportation are also covered. The document then discusses shallow foundation design, including bearing capacity theory, settlement analysis, and selection of appropriate foundation types based on subsurface conditions. Specific foundation types like spread footings, raft foundations, and their analysis are summarized.
Calulation of deflection and crack width according to is 456 2000Vikas Mehta
This document discusses the calculation of crack width in reinforced concrete flexural members. It provides information on:
1) Crack width is calculated to satisfy serviceability limits and is only relevant for Type 3 pre-stressed concrete members that crack under service loads.
2) Crack width depends on factors like amount of pre-stress, tensile stress in bars, concrete cover thickness, bar diameter and spacing, member depth and location of neutral axis, bond strength, and concrete tensile strength.
3) The method of calculation involves determining the shortest distance from the surface to a bar and using equations involving member depth, neutral axis depth, average strain at the surface level. Permissible crack widths are specified depending on exposure
The document compares the design of an Intze water tank using membrane design and continuity analysis methods. Membrane design assumes members act independently and are only subjected to direct stresses, while continuity analysis considers restraint at edges causing secondary stresses. For a 9 lakh liter tank, continuity analysis results in higher hoop forces, moments, and steel reinforcement compared to membrane design. A similar trend is seen for a 6 lakh liter tank, with continuity analysis giving higher stresses and reinforcement.
This document presents a summary of a presentation on analyzing and designing an RCC box culvert using ETABS. The presentation covers the objectives of determining loads, structurally designing the culvert, designing reinforcement, and analyzing the design in ETABS. It describes the culvert's design parameters from its hydraulic design and dimensions. It also details the typical reinforcement in the slab and walls. The conclusion recommends reinforcement sizes and validates the hand calculations with ETABS analysis results.
synopsis on design and estimation of intze tankganesh sharma
The document discusses the design and cost estimation of an elevated water tank for Rajkiya Engineering College in Azamgarh, India. It summarizes the relevant codes and methods for designing liquid retaining structures. The proposed tank will be an Intze tank designed using the working stress method for the tank elements and limit state method for other structural elements. Water demand calculations and material specifications are provided. The objective is to design a safe and economical tank to meet the current and future needs of the college.
The document describes an analysis and design software for overhead and ground water tanks. It analyzes and designs different tank types according to Indian standards. The software performs seismic and wind load calculations, designs tank components, and generates reports and drawings automatically. It allows single window input and covers analysis methods like membrane analysis, space frame analysis, and hydrodynamic analysis. The software can generate drawings of different tank types like conical, intze, cylindrical, and rectangular tanks for overhead and ground reservoirs.
New microsoft office power point presentationChandu Lalu
The document discusses the design of elevated water tanks, noting that they must be carefully designed to withstand various loads and stresses while preventing leakage, and outlines the objective of developing an expert system to aid in the design of liquid retaining structures using visual basic by accounting for factors like configuration, material, and loads. It also examines the loads that act on reinforced concrete chimneys and discusses joints in liquid retaining structures.
The document discusses the design and construction considerations for reinforced concrete structures used in water utilities. It provides examples of structures like water tanks and describes advantages like durability and adaptability. The document outlines design factors to consider such as seismic loads, buoyancy, and security. It also discusses construction considerations including proper adherence to specifications, waterproofing, concrete mix design, placement, curing, and testing. Reinforced concrete requires proper engineering, construction practices, and ongoing maintenance to ensure long-term structural success.
Complete design of r.c.c over head tank & boq estimateHarish Mahavar
This document provides an introduction and overview for the design of a reinforced concrete overhead water tank. It discusses the objectives of studying water tank analysis and design according to code guidelines. It also covers topics such as estimating water demand quantities based on population, consumption rates, firefighting demand, and fluctuations in demand rates. The document includes an index listing the various sections to be covered in the full report, such as classifications of water tanks, joint design, dome design, and structural design calculations.
Shivam Kumar is an Assistant Engineering Manager with over 4.5 years of experience in project management, design engineering, and team management. He is currently working at Larsen & Toubro ECC in Kolkata, India. His core competencies include civil and architectural design, project execution, and coordination. He has experience designing RCC and steel structures using AutoCAD, STAAD Pro, and REVIT STRUCTURE. He is seeking a challenging role in project management or civil and structural design.
In this you will find some of the basic thing regarding the elevated water tank and this is our one of the team project work in college. Hope you will enjoy it....
CADmantra Technologies pvt. Ltd. is a CAD Training institute specilized in producing quality and high standard education and training. We are providing a perfact institute for the students intersted in CAD courses CADmantra is established by a group of engineers to devlop good training system in the field of CAD/CAM/CAE, these courses are widely accepted worldwide.
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The presentation summarizes the project work done on "Seismic Analysis of Elevated Water Tank". Elevated water tanks are important structures that serve the function of supplying municipal water to the civil community. The stability of such structure is highly uncertain in the eve of earthquake. This project analyses the performance of such a structure in the eve of earthquake.
The project is done as a course requirement for undergraduate degree in May 2013. The degree in pursuit was "Bachelor of Technology in Civil Engineering" in National Institute of Technology in Tiruchirappalli (INDIA). The authors were in final year of the study during the making of the project.
This document appears to be a project report for designing a sump well with a capacity of 200 kl at the NRI campus in Bhopal, India. It includes sections on introduction, campus details, water requirements, design of the sump well, pump house, and various cost estimates. The project involves designing critical water infrastructure for the campus including a sump well to store water, meeting the daily water needs of the campus population.
The document describes the design of an Intze tank. An Intze tank consists of a top dome, cylindrical wall, and bottom dome combination used to store large volumes of water. The key steps in designing an Intze tank are: 1) designing the top dome, cylindrical wall, conical bottom dome, and supporting structures; 2) calculating loads and stresses; and 3) determining reinforcement requirements for each component based on strength calculations. An example is then given to design a specific Intze tank with given dimensions.
Intze Tankd s sad sa das dsjkj kkk kds s kkkskKrish Bhavsar
The document describes the design of an Intze tank. It consists of a top dome, cylindrical wall, and bottom consisting of a conical dome and spherical dome. Key steps in design include: designing each component for stresses; sizing reinforcement in domes, ring beams, and wall; and designing the foundation to support the tank. An example is given for the design of an Intze tank with specific dimensions, following the given design procedure and equations for calculating stresses in each component.
Content;
1. Top spherical dome.
2. Top ring beam.
3. Cylindrical wall.
4. Bottom ring beam.
5. Conical dome.
6. Circular ring beam.
The basics of enticing water tank design and the related components are broadly calculated in this document. The next few documents will demonstrate the design of Intze tank members like column, bracing and foundation. Keep following the updates.....
This document presents the design of the RCC structure for a proposed J Season Hotel building in Kathmandu, Nepal. It includes details of the building specifications, material properties, structural frame, load assignments, structural analysis, earthquake analysis according to Indian seismic codes, concrete design of columns, beams, slabs, and foundations, and references used. The building is a basement plus four and a half stories commercial hotel building with RCC frame structure.
The document discusses the design of reinforced concrete lintels. It describes what a lintel is and the different types of lintels used, including timber, stone, brick, steel, and reinforced concrete lintels. Reinforced concrete lintels are most widely used today due to their strength, rigidity, fire resistance, and economy. The document provides the design steps for RCC lintels, including determining the effective depth and span, calculating loads and bending moment, sizing tension and shear reinforcement, and providing detailing. It also includes an example problem showing the design of an RCC lintel with given dimensions and reinforcement.
The document presents the design of a post-tensioned prestressed concrete tee beam and slab bridge deck. Key details include:
- The bridge will have an effective span of 30m and width of 7.5m with 600mm kerbs and 1.5m footpaths on each side.
- The project team will design the bridge to meet Class AA loading standards for a national highway.
- The bridge will have 4 main girders spaced at 2.5m intervals with a 250mm thick deck slab cast between them.
- The document outlines the design process for the interior slab panel, longitudinal girders, and calculation of design moments and shear forces. Properties of the main girder cross
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350 kl overhead water intze tank design
1. 1
STRUCTURAL DESIGN OF 350KL
OVERHEAD WATER TANK AT INDIRA
GANDHI NATIONAL OPEN
UNIVERSITY, TELIBAGH LUCKNOW
2. 2
DATA
1. Type of Tank: Intze Tank
2. Capacityof the tank: 350KL
3. Type of staging: Column& Brace type
4. Depthof foundation: 2.5m
5. Safe BearingCapacityof Soil: 100KN/m2
6. Type of foundation: CircularRing&Raft foundation
7. Grade of Concrete: M-25
8. Grade of Steel: Fe-415
9. Heightof staging: 25m
10. Type of soil: SoftClay
11. Heightof BuildinguptoTerrace: 15.6m
12. No.of floorsinBuilding: G+3
13. Basic WindPressure: 1500N/m2
14. SesmicZone of Lucknow: Zone 3
15. No.of studentinCollege: 2000
16. Water consumptionrate
(Percapitademandinlitresperdayper head): 45
17. Designperiodfortank: 30 years
18. No.of studentinhostels: 1600
3. 3
OBJECTIVE
1:- To make a studyaboutthe analysisanddesignof watertank
2:- To make a studyaboutthe guidelinesforthe designof liquidretainingstructure accordingto
IS Code
IS: 3370 part 2-2009
IS: 456:2000
3:- To knowabout the designphilosophyforthe safe andeconomical designof watertank
4:- To estimate the overall costformakingthe Intze Tank
4. 4
WATER QUANTITY ESTIMATION IN COLLEGE CAMPUS
Populationorthe numberof studentstobe servedin2014 = 2000
Let populationtobe increasedatrate of 10% per decade
Numberof students(2014) = 2000
Numberof studentsin2024 = 2200
Numberof studentsin2034 = 2420
Numberof studentsin2044 = 2662
Quantity = per capitademand× Population
= 45 × 2662
= 1,19,790 litres
= 120 KL (assume)
5. 5
FLUCTUATION IN RATE OF DEMAND
Average dailypercapitademandincollege campus = 45 lpcd
If this average suppliedatall the timesitwill notbe sufficienttomeetthe fluctuation.
HOURLY VARIATION
(1) Duringthe entryof college from8to 9 inthe morning.
(2) Duringthe lunchfrom12 to 1 in the afternoon.
6. 6
WATER CONSUMPTION IN HOSTEL
Average dailypercapitademandinhostels=135 lpcd.
Quantity = 136 × 1600
= 216 KL
Total quantity = 216 + 130
= 346 KL
͌ 350 KL
7. 7
DESIGN REQUIREMENTOFTANK
* Concrete mix weakerthanM-20 isnot usedbecause of highergrade lesserporosityof
concrete.
* Minimumquantityof cementinconcrete shall be notlessthan30 KN/m3
.
* Use of small size bars.
* Coefficientof expansiondue totemperature=11×10-6
/˚C
* Coefficientof shrinkage maybe taken= 450 × 10-6
forinitial and200 × 10-6
fordrying
shrinkage.
* Minimumcovertoall reinforcementshouldbe 20 mmor the diameterof mainbarwhichever
isgreater.
* Anoverheadliquidretainingstructure isdesignusingworkingstressmethodavoidingthe
cracking inthe tank and to preventthe leakage andthe componentof tankcanbe designusing
LIMIT STATE METHOD
(example:-column,foundation,bracing,stairsetc.).
* Code usingIS:3370-PART 2-2009
IS: 456:2000
* The leakage ismore withhigherliquidheadandithas beenobservedthad waterheadupto
15m doesnotcause leakage problem.
* Inorder to minimizecrackingdue toshrinkage andtemperature,minimumreinforcementis
recommendedas-
(i) For thickness≤100 mm = 0.3%
(ii) Forthickness≥450 mm = 0.2%
For thicknessbetween100mm to 450 mm= varieslinearlyfrom0.3% to0.2%
* For concrete thickness≥225 mm, twolayerof reinforcementbe placedone nearwaterface
and otherawayfrom waterface.
8. 8
FROM IS -3370
(i) For loadcombinationwaterloadtreatedasdeadload.
(ii) Cracking– The maximumcalculatedsurface widthof concrete fordirecttensionandflexure
or restrainedtemperatureandmoisture effectshall notexceed0.2mmwithspecifiedcover.
(iii) Shrinkagecoefficientmaybe assumed= 300 × 10-6
.
(iv) Bar spacingshouldgenerallynotexceedthan300 mm or the thicknessof the section
whicheverisless.
11. 11
Minimumlengthof pipe requirement
= 2 × heightof buildingupto3 storeysfromthe level +lateral distance uptothe centre of tank
= 2 × 15.6 + 18
= 49.2 m
≈ 50 m
Headloss ℎℎ =
4×2.61×10−3
×50×5.522
2×9.81×0.15
= 5.40 m
HEIGHT OF STAGGING
Total hydrostaticpressure ontank P = ρgh
Total head=
ℎ
ℎ
+
ℎ2
2ℎ
+ ℎ + ℎℎ+ ℎℎℎℎℎ ℎℎℎℎℎℎ
Minor loss(assume) =1 m.
=
ℎℎ
ℎ
+
ℎ2
2ℎ
+ ℎ+ ℎℎ+ 1
= 4.5 +
5.522
2×9.81
+ 15.6+ 5.4 + 1
= 28.08 ℎ
Usingtotal head= 29.5
Heightof stagging= 29.5 – 4.5
= 25 m
12. 12
DESIGN OF TOP DOME
Assume thicknessof topdome =100 mm.
Meridional thrustatedges ℎ1 =
ℎℎ1
1+ℎℎℎℎ1
Deadload of top dome = 0.100 × 25 = 2.5 KN/m2
Live loadon topdome = 0.75 KN/m2
(assume)
Total load P = 3.25 KN/m2
ℎ1 =
3.25 × 103
× 18.5
1 + ℎℎℎ 18.92
= 30897.15 N/m
Meridional stress=
30897.15
100×100
= 0.308MPa < 5 MPa (OK)
Maximumhoopstressoccurs at the centre and itsmagnitude
ℎℎ1
2ℎ1
=
3.25×103
×18.5
2×0.100
=0.30 N/mm2
=0.3 MPa < 5MPa (OK)
Provide nominal reinforcementof 0.24%.
ℎℎℎ =
0.24×100×1000
100
= 240ℎℎ2
Use 8 mmbars.
ℎℎ = 50 ℎℎ2
Spacing =
1000×50
240
= 208.33
= 205 mm c/c.
Provide 8 mmbars @ 205 mm c/c radiallyandcircumtentiallyasshowninfigure.
The 205 mm c/c for radial bar isprovidedatthe springingof the dome.
At the crown the spacingreducestozero.
Hence the curtailmentof radial barsmay be carriedout at the appropriate distance.
14. 14
DIMENSION OF TANK
Innerdiameterof cylindrical portion D= 12 m
Rise of top dome h1 = 1 m
Rise of bottom dome h2 = D/8 = 1.5 m (centre)
Free board= 0.15 m
Diameterof ringbeamDo = 5/8 D = 7.5 = 8 m
Rise of bottomdome (side) ho = 3/16 × D
= 2.25 m
= 2.5 m
Capacityof tank:-
ℎ =
ℎℎ2
ℎ
4
+
ℎℎℎ
12
(ℎ2
+ ℎℎ
2
+ ℎℎℎ)−
ℎℎ2
2
(3ℎ2−ℎ2)
3
Radiusof bottomcircular dome:-
1.5 × (2R2 – 1.5) = 42
2R2 – 1.5 = 10.67
R2 =6 m
SinƟ2 =
4
6
Ɵ2 = 41.8o
ℎ =
ℎℎ2
ℎ
4
+
ℎℎℎ
12
(ℎ2
+ ℎℎ
2
+ ℎℎℎ) −
ℎℎ2
2
(3ℎ2−ℎ2)
3
350 =
ℎ×122
×ℎ
4
+
ℎ×2
12
(122
+ 82
+ 12 × 8) −
ℎ×1.52
(3×6−1.5)
3
350 = 113ℎ + 160− 38.87
ℎ = 2 ℎ
Radiusof top circulardome:-
1 × (2R1-1) = 6 × 6
R1 = 18.5 m
15. 15
SinƟ1 = 6/18.5
Ɵ1 = 18.92o
Designof top ringbeam:-
A ringbeamis providedatthe junction of topdome and the vertical wall toresisthooptension
inducedbythe top dome.
Horizontal componentof meridional thrust P1 = T1 cos Ɵ1
= 30897.15 cos 18.92o
= 29227.8 N/m.
Total hoop tension tending to rupture of beam =
ℎ1×ℎ
2
=
29227.8×12
2
= 175366.8ℎ
Permissible stress in HYSD bars = 150 N/m2
Ash = 175366.8/150 = 1170 mm2
Provide 20 mm bars (314.15) as hoop.
Number of 12 mm bars = 1170 / 314.15
= 3.72
= 4
Actual Ash = 4 × ℎ/4 × 202
= 1256.63 mm2
= 1257 mm2
Provide 4-20 mm ø hoop and 8 mm bars tie @ 205 mm c/c.
Hence the cross sectional area of concrete
1.3=
175366.8
ℎ+1257×8
Ac = 124841.53
Provide ring beam of 320 mm × 400 mm.
16. 16
Designof cylindrical wall:-
In the membrane analysisthe tankwall isassumedtobe free attop andbottom maximumhoop
tensionoccursat the base of the wall and itsmagnitude:-
=
ℎℎℎℎ
2
=
9800×ℎ×12
2
= 58800 ℎ
Hoop tensionatanydepthx fromthe top
X (m) Hoop tension(N/m)
0 0
1 58800
2 117600
Minimumthicknessof cylindrical wall =3 H + 5
= 3 × 2 + 5
= 11 cm.
Provide 20 cm at the bottomand taperit to12 cm at top.
At x = 1 m.
Areaof steel Ash = 58800/150
= 392 mm2
Provide 8 mmbars.
Aø = 50.26 mm2
Spacing= (1000 × 50.26) / 392
= 130 mm c/c.
At x = 2 m.
Areaof steel Ash = 117600/150
= 784 mm2
Provide 10 mm bars.
Aø = 78.53 mm2
Spacing= (1000 × 78.53) / 784
= 100 mm c/c.
17. 17
The hoop steel maybe curtailedaccordingtohooptensionatdifferentheightalongthe wall
provided0.24%of minimumvertical reinforcement.
Average thicknessof wall =(120+200) / 2 = 160 mm.
Ash =
0.24×160×1000
100
= 384 mm2
Provide 8 mmø.
Aø = 50.26 mm2
Spacing=
50.26×1000
384
= 130mm c/c.
Designof ringbeamB3:-
Thickness=100 mm
Rise = 1.5 m (centre)
Base dia.= 8 m
Raidusof curvature = 6 m
Cos 41.8o
= 0.745
The ring beamconnectthe tank wall withinconical dome.The vertical loadatthe junctionof the
wall withconical dome istransferredtothe ringbeamB3 by horizontal thrust.Inthe conical dome
the horizontal componentof thrustcauseshooptensionatthe junction.
W = Load transferredthroughthe tankwall atthe topof conical dome /unitlength.
Øo = Inclinationof conical dome.
T = Meridional thrustinconical dome at the junction.
tan Øo = 2/2.5
26. 26
Hysd bars σst=150 N/mm2
Neuteral axisdepthfactor(K)
K=
ℎℎℎℎℎ
ℎℎℎℎℎ+ℎℎℎ
m=
280
3ℎℎℎℎ
=
280
3×8.5
=10.98
=10.98 ×
8.5
10.98×8.5+150
=0.383
LeverArm
J=1-K/3=0.872
R=1/2×σcbc×J×k=1/2×8.5×0.872×0.383
1.41
Mr=Rbd2
Reqeff.Depth(d)-
255800.78=1.41×600×d2
d=550mm
Howeverkeeptotal depth=700mm fromshearpointof view.
Max shearforce at support Fo=WRƟ
=308423.9×4×π/8
=484471.12N
S.F.at any pointF=WR(Ɵ-φ)
=308423.9×4×(22.5-9.5) ×π/180
=279916.6N
B.M. at the pointyof max torssional momentφm=9.50
Mφ=WR2
(ƟSinφ+ƟCosƟCosφ-1) sagging
=308423.9×42
×(π/8×sin9.5+π/8×cot22.5×cos9.5-1)
=4934.78Nm sagging
The torsionmomentat any point-
Mpt
=WR2
[Ɵcosφ-Ɵcosφsinφ-(Ɵ-φ)]
27. 27
At the support φ=0 M0
t
=WR2
(Ɵ-φ)=0
At the midspan φ=Ɵ=22.5=π/8 radian
Mφ
t
= WR2
[ƟcosƟ]-[
Ɵℎℎℎøℎℎℎø
ℎℎℎø
]=0
Hence we have the followingcombinationof B.M.& torsional moment:-
(a)atthe support
M0 =255800.78 NM(hoggingornegative)
M0
t
=0