Question
Answer the Fallowing Structures Question:
An arch roof must span 120 ft between supports. The arches are spaced at 20 ft on center. Roof beams are spaced at 10 ft on center and deliver the load from the roof deck to the arches. The roof must support a dead load of 20 psf and a snow load of 30 psf. The arch loading diagram is shown below. Loading Diagram Support Locations and Midpoints Determine the following: The steel deck must span 10ft between support beams. What is the minimum gage 3" steel deck required to support the total dead plus snow load? Consider that each deck panel is one span. What is the required point load P that acts on the arch from the roof beams? The arch must pass through points 1,2, and 3 on the form diagram. Find the form of the arch. (Hint: Funicular form through three points). What is the horizontal component of the arch force? What is the maximum arch force? What are the allowable in-plane horizontal buckling? The archesare constructed of 12" wide X 24" deep glued laminated wood members. The wood has a modulus of elasticity (E) of 1,500ksi. (Hint: Determine the in-plane horizontal buckling force (H) and the in-plane uniform load to case buckling (q). See the handout on arch buckling. Use a factor of safety of 2 to determine the allowable loads.) Compare the allowable horizontal buckling force to the horizontal force determined from the graphical analysis. Will the arch buckling in-plane? The arches are braced out-of-plane by the roof beams spaced at 10 ft on center. Use the Euler buckling equation to check the out-of-plane buckling strength of the arches. Use a factor of safety of 2 to determine the allowable out-of-plane buckling strength. Will the arch buckling out-of-plane? 3" Deck Strength Table: VERTICAL LOADS FOR TYPE 3N
Explanation / Answer
if no one answers please do rate me pleaseeeeee