While designing a Steel Shed, in reference to giving an expansion joint in the structure, which of the following is an incorrect statement?
- AThe details as to length of a structure where expansion joint have to be provided, are determined after considering temperature, exposure to weather and structural design.
- BThe maximum width of the covered building section should preferably be restricted to 150 m, beyond which suitable provisions for the expansion joint may be made.
- CWhen the provisions given on expansion joint in IS 800:2007 are met for a building or open structure, the stress analysis due to temperature is not required.
- DNone of the aboveCorrect
Solution
Concept
Expansion joints in steel buildings
Step-by-step solution
1. IS 800 cl. 6.? requires expansion joints where the building length/width exceeds the limit (about 180 m for length, 150 m for width). 2. If these provisions are met, temperature stress analysis is not required. 3. All three statements are therefore acceptable and "None of the above" is the answer.
Explanation
Statements A, B and C all follow the expansion-joint provisions.
Why the other options are wrong
None of A to C is incorrect.
Correct answer: D) None of the above