IS 3370:1967 Part 4 is the Indian Standard (BIS) for concrete structures for storage of liquids - code of practice - design tables. IS 3370 Part 4 provides comprehensive design tables for calculating bending moments, shear forces, and hoop tensions in concrete liquid retaining structures. It includes coefficients for both circular and rectangular tanks subjected to hydrostatic loading under varying support conditions.
Provides design tables for use in conjunction with other parts of IS 3370 for concrete structures for liquid storage.
Overview
- Status
- Current
- Usage level
- Specialized
- Domain
- Structural Engineering — Swimming Pools and Sports Facilities
- Type
- Code of Practice
Also on InfraLens for IS 3370
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
Practical Notes
! Ensure the correct base boundary condition (fixed vs. hinged) is established before selecting the circular tank table.
! For rectangular tanks, verify that the aspect ratio and edge support conditions (free, hinged, fixed) exactly match the physical design.
! Interpolation is often required for H^2/Dt values or aspect ratios not explicitly listed in the tables.
Frequently referenced clauses
reinforced concreteconcrete
International Equivalents
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Key Values3
Quick Reference Values
shape parameter circularH^2 / Dt (Height squared over Diameter x thickness)
shape parameter rectangulara/b (Ratio of span dimensions)
hydrostatic load distributionTriangular (wH at base, 0 at top)
Key Formulas
T = C * w * H * R (Hoop tension formula using table coefficients)
M = C * w * H^3 (Bending moment formula for vertical walls)
V = C * w * H^2 (Shear force at base)
Tables & Referenced Sections
Key Tables
Table 1 - Hoop tension in circular tanks with fixed base and free top
Table 2 - Bending moments in circular tanks with fixed base and free top
Table 3 - Hoop tension in circular tanks with hinged base and free top
Table 4 - Bending moments in circular tanks with hinged base and free top
Tables for Bending Moments in Rectangular Panels
Key Clauses
Section 2 - Circular Tanks
Section 3 - Rectangular Tanks
Frequently Asked Questions3
How is hoop tension calculated for circular tanks using this code?+
By finding the coefficient 'C' from the tables based on the H^2/Dt ratio, and applying it to the formula T = C * w * H * R.
Which dimensionless parameter is used to enter the circular tank tables?+
The parameter H^2/Dt, where H is height, D is diameter, and t is wall thickness.
Does this part cover rectangular tanks?+
Yes, Section 3 provides extensive moment coefficient tables for rectangular wall panels based on span ratios (a/b) and various edge support conditions.
QA/QC Inspection Templates
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QA/QC templates coming soon for this code.