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DESIGN & ANALYSIS OF OVERHEAD RCC RECTANGULAR WATER TANK
PRESENTED BY:-
A.ABDUL FATAH HAMID
A.S.KARTHIK
S.MUJEEB BASHA
SHOAIB BASHIR WANI
GUIDED BY:- Mr. D.Manohar
Assistant Professor CE
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INTRODUCTION
Storage tanks are built for storing water, liquid petroleum, petroleum products and similar liquids.
Code of practice for plain and reinforced concrete IS 456-2000.
Code of Practice for the storage of Liquids- IS3370 (Part I to IV).
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NEED FOR STUDY:
1. To make a study about the analysis and design of water tanks.
2. To make a study about the guidelines for the design of liquid retaining structure according to IS Code.
3. To know about the design philosophy for the safe and economical design of water tank.
4. In the end, the programs are validated with the results of manual design calculation.
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TYPES OF WATER TANKSWATER TANK
BASED ON PLACEMENT OF TANK
BASED ON SHAPE OF TANK
1. RESTING ON GROUND2. UNDER GROUND3. ELEVATED
1. CIRCULAR2. RECTANGULAR3. SPHERICAL4. INTZ5. CONICAL BOTTOM
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COMPARISON OF TANKSRECTANGULAR TANK
CIRCULAR TANK
INTZE TANK PRESTRESSED TANKS
For smaller capacities we go for rectangular tanks
For bigger capacities we go for circular tanks
Intze tank is constructed to reduce the project cost because lower dome in this construction resists horizontal thrust
For bigger tanks,prestressing is the superior choice resulting in a saving of up to 20%.
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RECTANGULAR WATER TANK INTRODUCTION
Rectangular tanks are used when the storage capacity is small.
Rectangular tanks should be preferably square in plan from point of view of economy.
It is also desirable that longer side should not be greater than twice the smaller side.
Moments are caused in two directions of the wall i.e., both in horizontal as well as in vertical direction.
Exact analysis is difficult and are designed by approximate methods.
When the length of the wall is more in comparison to its height, the moments will be mainly in the vertical direction, i.e., the panel bends as vertical cantilever
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AUTO CAD DESIGN
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DESIGN PROBLEM
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TO DESIGN A TANK (12M*5M*4M). THE BOTTOM OF TANK IS 12M ABOVE THE GROUND LEVEL. THE TANK IS COVERED AT TOP.SBC OF SOIL=150KN/M2.USE M20 MIX?
1)DESIGN OF ROOF SLAB:-
Reinforcement of slab
Specification Size Reinforcement details
Top slab
Long span Short span
12m×5m
8mm Ø @300mm c/c12mm Ø @1500mm c/c
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TOP SLAB REINFORCEMENT
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2) DESIGN OF LONGER & SHORTER SIDE WALLSSpecification Size Reinforcement details
Longer side wall
Long span
Short span1. +ve bending moment2. -ve bending moment
12m×4m
8mm Ø @300mm c/c
12mm Ø @90mm c/c20mm Ø @110mm c/c
Shorter side wall
Long spanI. At top II. At bottom
Short spanI. At supports II. At middle
5m×4m
12mm Ø @170mm c/c12mm Ø @80mm c/c
12mm Ø @70mm c/c10mm Ø @80mm c/c
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REINFORCEMT IN LONG & SHORT WALLS
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3)DESIGN OF BASE SLAB:-
Specification Size Reinforcement details
Base slab Short spanI. -ve bending momentII. +ve bending moment
Long spanI. -ve bending momentII. +ve bending moment
5m×4m
16mm Ø @80mm c/c16mm Ø @110mm c/c
16mm Ø @110mm c/c10mm Ø @220mm c/c
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REINFORCEMENT IN BASE SLAB
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4)DESIGN OF BEAMS
Specification Size Reinforcement details
Beam I Main reinforcement
Stirrups
480mm×300mm3 bars of 20mm Ø & 3 bars of 32 mm Ø
12mm Ø @50mm c/c ( near support)12mm Ø @80mm c/c ( near middle)
Beam IIMain reinforcement
Stirrups
480mm×300mm
3 bars of 20mm Ø8mm Ø @300mm c/c
Beam IIIMain reinforcementI. Span ABII. Span BC
Stirrups
480mm×300mm
3 bars of 12mm Ø2 bars of 12mm Ø
8mm Ø @300mm c/c
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BEAM REINFORCEMENT DETAILSBEAM1
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BEAM 2
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BEAM 3
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5) DESIGN OF COLUMNS & BRACING BEAMSpecification Size Reinforcement details
Column Main reinforcement
Ties
400mm×300mm4 bars of 10mm Ø
8mm Ø @300mm c/c
Bracing beam Main reinforcement
Stirrups
400mm×300mm4 bars of16mm Ø both @ top and bottom@300mm c/c
8mm Ø @300mm c/c
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DESIGN OF COLUMNS & BRACING BEAM
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DESIGN OF FOUNDATION
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WATER TANK DESIGN &ANALYSIS USING STAAD PRO
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CONCLUSION1) Storage of water in tanks has become a necessity for
drinking and washing purposes in the present day life.2) For small capacities we go for rectangular water tanks
& for large capacities we go for circular tanks.3) The designed RCC rectangular tank can store water
upto 240000 liters4) In this design project we have analyzed the over head
rectangular RCC water tank, through theoretical design and STAAD Pro program.
5) Although the stresses and bending moment are nearly equal but all the parameters used in the theoretical design cannot be fully adopted in the program design.
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REFRENCES Gurcharan Singh,˝Theory & Design of RCC Structures” Design of RCC Structures By B C Punimia Dr.A K Goel & Dr I C Syal,˝Reinforced Concrete Structures” Raju N Krishna,˝Reinforced Concrete Design” IS 456-2000 Indian Standard Code of Practice for Reinforced
Concrete IS 3370 Part I,II,III,IV -1965 Indian Standard Code of Practice for
Liquid Retaining Structures A.K Jain Reinforced Concrete (Part II) Design Of Reinforced Concrete Structures By V.N.Vazi Rani
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THANK YOU