Why water tanks are still designed by working stress method?

Why Working Stress Method (WSM) for Water Tanks? Water tanks or any liquid retaining structures are vulnerable to stresses with the variation of water level in it. When compared with limit state method of design, the WSM method provide more serviceability that help to increase the durability and life of water tanks.

Which method is used to design wall of water tank?

The reason behind the design of water tanks using the working stress method only are as follows; Variation of the load is not taken into account in working stress method. Working stress method is used whenever the design is more conservative.

Which of the following factors must be considered while designing a RCC tanks?

RCC water tank design should be based on sufficient resistance to cracking to avoid leakage and adequate strength. For achieving these following assumptions are made: Plain section before bending remains plain after bending.

What is hoop stress in water tank?

There are three different patterns of cylinder stress namely; Hoop stress or circumferential stress – it is in tangential direction. Axial stress – parallel to the axis of the cylinder. Radial stress – It is perpendicular to the symmetry axis but is coplanar.

Which cement is suitable for marine work?

Important Points

Type of Cement	Where to Use
Extra Rapid hardening	Concreting in cold weathers
Low Heat Cement	Mass Constructions like Dams, abutments etc.
Portland Pozzolana Cement	Marine and Hydraulic constructions, Mass concrete structures.
Quick Setting Cement	Concrete to laid under normal water.

Which concrete grade is best for house construction?

OPC is the best for house construction in India. Generally, OPC 53 Grade cement is suitable for all RCC structures like footing, column, beam, and slabs, where ever initial and ultimate strength is the major structural requirement.