Assume a concrete tilt-up building with an outside footprint of 200′ × 250′. Assume that panels are 9 inches thick and no larger than 30 feet wide and all panels are 27 feet tall. The building has two man-doors on each face and eight each 14′ wide by 14′ high truck doors on one face.

(A) How many panels will there be?

(B) What is the weight of the heaviest panel?

(C) Utilizing a suggested estimating rate of 30 minutes per panel for erection, how long will it take to tilt the entire building?

(D) With an eight-person erection gang of various crafts, as discussed earlier, how many man-hours will be involved with the erection?