1. For the frame loaded as shown, determine the following using ACI 318-14, f'c=28 Mpa, fy=414 Mpa for main bars, and fy=276 Mpa for secondary bars:

a.) the positive and negative reinforcements of the beam

b.) the required percentage of column reinforcements using the ACI interaction diagrams and the recommended bars using the NSCP-2015 Standard

c.) the critical spacing of stirrups for the beam

d.) the recommended spacing of column ties considering column shear only.

 

EL = 80 KN 4 m 75 kN Soil 350 x 350 mm 2 m PL =70 KN DL = 20 kN/m, LL = 30 kN/m 350 x 500 mm PL = 70 KN 2.5 m 2 m Possible Load Combos: 1) 1.4 (D+H) 2) 1.2 D + 1.6 (L + H) 3) 0.9D+1.4E+1.6H L = Live load D = Dead load E = Earthquake load H = Soil pressure Note: EL can reverse