Building Structures Test with Answer Key | ARCH 4075, Exams of Structures and Materials

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Building Structures 1 Test No. 1 March 4, 2005 NAME SSN: Notes: 1. Write and sign “I have neither given nor received unauthorized assistance on this test”. 2. Do not separate the exam sheets and use them to answer the questions. The following figures show the elevation and framing plan of a one-story steel office building located in downtown Durham, North Carolina. Answer the following two problems: Problem One (25 pts.) Find the roof snow load for the building. Problem Two (40 pts.) Find the loading for girder (G-1) and draw the shear force and bending moment diagrams if the roof is made of metal deck with 2” concrete, weight of mechanical and electrical systems is 5 psf, and weight of steel is 5 psf. Unit weight of concrete is 150 pef. 30-0" 4EQ. SPACE ane, 9 —+~ = N ke t+ Cai-1 7722 TT | | x appear ps Deon Eecanon! mI j__88.shaces _} PLAN Problem Three (35 pts.) The following figure shows a cantilever retaining wall which is used to build a road. The coefficient of active soil pressure is 0.35, and the coefficient of passive pressure is 3.5, The surcharge from the road is 100 psf, and the unit weight of soil is 100 pcf. Show the pressures on the wall with their values, and find the total loads and their locations. ] Rear PR s i % 3 8) | + t 8 | "| L