MotorCity
Structural
- Dec 29, 2003
- 1,787
I am designing a one way slab with a steel deck spanning over several floor beams in a typical bay (35'x35'). Beams are spaced at 7'. I would like to take advantage of a live load reduction, but I am having difficulty trying to interpret what the tributary area should be for use in the reduction equation.
For slab design, we usually design for a 1' wide strip and assume it is continuous over multiple supports. My first thought is that the trib area would be 1' x 7' (assume 3-span condition).
But there is a note that says the trib area for one way slabs shall not exceed an area defined by the slab span times a width normal to the slab span of 1.5 times the slab span.
So for my case, would it simply be 7' * (1.5*7') = 73.5 sq.ft.
If that's the case, KLL * trib area < 400 sq.ft, and I cannot take advantage of the reduction.
Is my interpretation correct?
For slab design, we usually design for a 1' wide strip and assume it is continuous over multiple supports. My first thought is that the trib area would be 1' x 7' (assume 3-span condition).
But there is a note that says the trib area for one way slabs shall not exceed an area defined by the slab span times a width normal to the slab span of 1.5 times the slab span.
So for my case, would it simply be 7' * (1.5*7') = 73.5 sq.ft.
If that's the case, KLL * trib area < 400 sq.ft, and I cannot take advantage of the reduction.
Is my interpretation correct?
