1. The strain profile of the section below with compression reinforcement was calculated with a computer program. All dimensions are to center of the reinforcements. Material properties: (a) (b) (c) Concrete, f'c = 4.0 ksi Steel, fy = 60.0 ksi Is the section tension controlled? What is the strength reduction factor (+)? Check if the forces in the section are in equilibrium. Do not correct them if they are not in equilibrium. What is the nominal moment resistance of the section? (4) #9. #5@4" (5) #11- (5) #11 -24"- SECTION 3" 3" 3" 48" 0.015 0.01 0.005 Strain diagram eps ecu epst 10.035¹ 0 0.01 @lowest reinforcing steel Strain Profile 10 20 30 40 50 60 -0.005

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A: P=10000lb

Design criteria for structural loading

The different loads such as loads due to self-weight (dead load) and external loads such as live load, wind loads, seismic load, snow load, and other loads and load combinations that influence the design of a building are called structural loading. The nature of the applied load differs from changes in the location, design, and type of materials used. The design criteria require that structures must be designed and constructed to be able to withstand all load types that are expected to act upon the structure and render its usage for the designated purpose. The structural members such as beams, slabs, columns, and foundations help the structure to withstand the applied load. There are different institutes such as ASCE and ACI that provide building design codes to assure minimum safety requirements and quality of the structures.