Skip to main content

Roof diaphragm


From this plan of a simple wood frame structure (1-story height), what is the maximum chord force at the east and west edges of the roof diaphragm if 110 lbs/foot lateral wind load is exerted as shown?

A. 18,340 lbs
B. 367 lbs
C. 3,670 lbs
D. 4,600 lbs

AnswerD. 4,600 is correct. The lateral wind load here is similar to a uniform load acting on a simple beam turned on its side. To find the maximum chord force at the edges of the diaphragm, use the equation for maximum moment wl²/8 ÷ building plan depth. 110 lbs per foot x (100 ft)² / 8 ÷ 30ft = 4,583.33
ARE 4.0 exam prep: SS

Comments

Post a Comment

Try These Too!

Space programming

What are two common ways to identify and document physical and functional relationships amongst spaces in the programing phase? Choose 2 A. adjacency diagram B. adjacency matrix C. bubble diagramming D. block-stack diagram Answer A & B The adjacency diagram and adjacency matrix are used in programming stage, while C & D are employed as the initial design effort begins as more physical representations of plan are introduced. ARE 4.0 exam prep: PPP
Post a Comment
See the answer »

Overimprovement

While underimprovement describes property that is not being put to its highest and best use (reducing its value), when does overimprovement apply?
Post a Comment
See the answer »

Vapor retarders

In this section, a ceiling assembly separates the attic space above from the room interior below. If the building is located in Lewisville, Texas (hot-humid zone), where is the predicted location of condensation and what is the predicted condition of the gypsum board in this assembly? (Select 2 from the following) A. outside face of vapor retarder B. inside face of vapor retarder C. gypsum board will be wet D. gypsum board will be dry
2 comments
See the answer »