Why LSM method is more preferable than WSM method?

1) Serviceability check in case of LSM is required because after the elastic region strain is higher, which results in more deformation, hence a check is necessary. 3) LSM is non-deterministic method whereas WSM is deterministic approach. 4) The partial safety factor is used in LSM whereas Safety factor is used in WSM.

Where we use working stress method?

Working Stress Design Method is a method used for the reinforced concrete design where concrete is assumed as elastic, steel and concrete act together elastically where the relation ship between loads and stresses is linear.

What is the best material for a water tank?

While there are plenty of options available, the best material for water tanks is plastic. Being made up of polyethylene, these tanks are non-corrosive and are designed for long life. The best part is that these tanks don’t suffer from rust or corrosion, unlike metal and concrete.

What is working stress design method?

Working Stress Design Method is a method used for the reinforced concrete design where concrete is assumed as elastic, steel and concrete act together elastically where the relation ship between loads and stresses is linear .

Why are water tanks designed using the working stress method only?

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 method of design is adopted for design of water tank?

The method of design adopted for design of water tank is working stress method. The permissible stress values in concrete and steel are given in Tables 21 and 22 of IS456-2000, as follows: For liquid retaining structures, the stress values are further reduced and given in IS3370

What is the working stress method in structural engineering?

Structures like water tanks, chimneys and RC bridges, working stress method is generally adopted. Working stress method is adopted as it does not account for the variation of loads and the design is mostly conservative. Water tanks are more vulnerable.

What is the difference between limit state and working stress method?

Moreover, Working stress method offers more serviceability when compared to Limit state method which extends the lifespan of the structure. These are the reasons for adopting working stress method. Earlier, IS 3370:1965 code is used for the design of water tanks which allows only working stress method.