Chapter 10, Problem 8RQ

Determine the tonnage or capacity/truck using the following parameters:  Ore hauling Cycle time = 30 minutes hauling time         = 18 hrs/day Production target = 30,000 tons per day Truck Capacity  = 100 tonner Truck factor = 85 %

A customer estimates that he is getting 30 cubic yards(loose) of gypsum in his scraper. Determine the percentoverload if the load estimate is correct. The maximum loadcapacity of the scraper is 84,000 pounds.

12.13 A civil engineer involved in construction requires 4800, 5810, and 5690 m³ of sand, fine gravel, and coarse gravel, respectively, for

Problem 2: Complete the missing information in the concrete placing labor cost estimating table below. Number 1 2 5 1 Component Foundation Wall to elevation Slab 10 in Beams elevated Beams elevated Member Slab elevation Interior wall Slab elevation Walls Walls Floors elevated Manhole walls Roof Headwall Carpenter foreman Cement mason Laborers Concrete pump Production rate of crew under normal circumstances = 18 m³/hr. The actual production rate can be lower in the different components based on the efficiency factor Total cost 14 12 Quantity (m3) Efficiency factor 44 59 7 14 9 12 57.2 42 8.9 Concrete placing crew 27.3 14 -8 8.5 Rate per hour $45/hr $35/hr $25/hr $55/hr Crew hourly rate ($/hr) 0.89 0.90 Cost/m3 Total 0.75 0.85 0.79 0.78 0.65 0.70 0.85 0.88 0.85 0.80 0.75 0.87 Total labor cost for concrete

The crew hour productivity rate for cast in place concrete is: O 0.128 ch/m3 O 0.067 ch/m3 O 0.111 ch/m3 O None of the above QUESTION 15 The man hour cost for cast in place concrete is: $38.50/mh O $40.43/mh 37.33/mh O None of the above QUESTION 16 The crew hour cost for cast in place concrete is: $283.00/ch $224.00/ch $269.50hch O None of the above

Question: Each of the four silos seen in the figure has an empty weight of 30MN, and can hold up to 105 MN of grain. The weight of the mat is 55 MN. Since each silo is filled independently, the resultant load imposed on the mat does not necessarily act through the centroid. Evaluate the various loading conditions and determine whether centrally loaded, one-way eccentric loaded, and two-way eccentric loading requirements will be met. If these requirements are not met, determine the minimum mat width, B, needed to satisfy these requirements. Allowable bearing capacity is given as qa=265kPa). 50m 12,5m Plan 50m 12,5m Profile Mat foundation

14.1 A customer estimates that he is getting 30 cubic yards (loose) of gypsum in his scraper. Determine the percent over-load if the load estimate is correct. The maximum load capacity of the scraper is 84,000 pounds.

SOM 6. Show your complete solution.

Please Solve the Question fully ! If the BOD3 of a waste is 75 mg/L and the K is 0.150 d^-1 , what is the ultimate BOD? (Report your answer to two significant figures).