Question 3 (30 points) - For CEIE 412 ONLY - This question has two parts Question 3 - Part 1 (15 pts) For the shown floor system with following conditions: Beam spacings is 4ft Beam Span Length - 18 ft Slab thickness 5 in (normal weight concrete) Live load of 85 psf The maximum live load deflection cannot exceed L/360 a) Use LRFD and AISC design aids/tables to select the lightest A992 W-shape for the beam AB. Make sure to check flexural, shear strength, and serviceability limit states. Reference the table you used. (12 pts) b) If Open Web Steel Joists are to be used for this floor system, use SJI load tables, and select the lightest K-series. (3 pts) 18' B 1 4 @ 4' = 16' Question 3 - Part 2 (15 pts) Determine the nominal flexural strength of a W16 x 50 of A992 Steel, if the beam has unbraced length of 15 ft. Assume Cb - 1 and Fy = 50 ksi and show detailed calculations for the followings: checking section compactness, Lp and L: limits. You may use AISC design tables to verify your calculations. Question 3 (30 points) - For CEIE 412 ONLY - This question has two parts Question 3 - Part 1 (15 pts) For the shown floor system with following conditions: Beam spacings is 4ft Beam Span Length - 18 ft Slab thickness 5 in (normal weight concrete) Live load of 85 psf The maximum live load deflection cannot exceed L/360 a) Use LRFD and AISC design aids/tables to select the lightest A992 W-shape for the beam AB. Make sure to check flexural, shear strength, and serviceability limit states. Reference the table you used. (12 pts) b) If Open Web Steel Joists are to be used for this floor system, use SJI load tables, and select the lightest K-series. (3 pts) 18' B 1 4 @ 4' = 16' Question 3 - Part 2 (15 pts) Determine the nominal flexural strength of a W16 x 50 of A992 Steel, if the beam has unbraced length of 15 ft. Assume Cb - 1 and Fy = 50 ksi and show detailed calculations for the followings: checking section compactness, Lp and L: limits. You may use AISC design tables to verify your calculations