Question

1) Determine the number of 20-foot-long pieces of rebar that are needed to complete a 80-footlong footing. The pieces are spliced with a lap of 2 feet and form a single bar running the length of the footing. Three inches of cover over the rebar is required at each end of the footing. Linear components should be rounded up to the next whole number to make sure that there are adequate materials.  

2) Determine the volume of a 150 foot by 150 foot concrete slab. The slab is 6 inches thick. Express your answer in cubic yards. Ignore the waste factor for this problem.

3) The measured output for a crew is 1,696 square feet of sheathing in 1 day. The crew consists of four crew members, who work 8 hours each during the day. Determine the productivity of the crew in labor-hours per square foot of sheathing. Formula: Labor-Hours/Units = LaborHours/Quantity. Express your answer up to four decimal points.

Answer 1

k soft 79.51€ 3 ft to? Cave. = 18 ft. " Couch The pieces are Spliced with a lap f avalab o-14 жbg = 2 {{- No. f rebel required . Il doft long footing = 72 = 4+1755 - 5 No. y rebal required for soft long foeling. (z 150 ft, B=150ft. to = 0.5ft Volf Slub= LxBxt = 150x15oxo-s - 11250 cubicft # cubic ft = 0.037 cubic yard → 11250 cubic fit = 11250 X 0.037 = 416-25 cubic yardx.

output Producitivity - Productivity = Input day out pust = 1694 sq-fut f Sheating in no y crew members =unod. nood working hours per day = 8 orking hould 8 hours. = 1654 - productivity T = 53 bataatty Sot Productivity = u X8 T Productivity = 53 22 26 labour-houls.)