Civil Engineering - Building Construction - Discussion

Discussion Forum : Building Construction - Section 1 (Q.No. 23)
23.
In jack arch floor, the rise is kept
1/6th of the span
1/8th of the span
1/10th of the span
1/12th of the span
1/15th of the span.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
9 comments Page 1 of 1.

Govind tripathi said:   4 years ago
Jack arch roof is composed of arches of either brick or lime concrete, supported on the lower flange of are. S.J S. The joists are spaced 1.0 to 1.5 m centre to centre and are supported at their ends either on walls or on longitudinal girders. The rise of the arch is kept 1/12th of the span.
(1)

Hanu said:   5 years ago
According to IS 2118 the rise shall kept 1/6 to 1/8 of span and deflection shall not more than L/480.

Mushtaq Ahmad said:   5 years ago
It is a shorter span or longer span? explain about it.

Sam said:   5 years ago
According to me,

The Rise of jack arch is kept about 1/4 to 1/8 of span.

Abhishek said:   8 years ago
1/12th of the span is correct. I agree with the answer.

Daniel said:   8 years ago
According to me, it is 1/8.

Aditya anshu said:   8 years ago
As per my knowledge, it is 1/10 to 1/12.

Baloch said:   9 years ago
@Gowda.

Arch beneath the floor.

Gowda said:   9 years ago
What is the meaning for jack arch?

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