Problem 1 For crew C2 calculate Bare Labor cost ($/SFCA) A project has 1,000 SFCA. Calculate the total bare cost when material bare cost is $3.88/SFCA. 0 Forms In Place, Beams And Girders Line Number 031113200010 031113200500 Description Unit Crew Daily Output FORMS IN PLACE, BEAMS AND GIRDERS Exterior spandrel, job-built plywood, 12" wide, 1 use SFCA Bare Incl. Crew C-2 Hr. Daily Hr. Daily Costs O&P 1 Carpenter Foreman (outside) $50.45 4 Carpenters 48.45 $403.60 $77.40 $619.20 $47.02 1550.40 74.30 2377.60 $72.13 1 Laborer 37.90 48 L.H., Daily Totals 303.20 58.15 465.20 $2257.20 $3462.00 $47.02 $72.13 C2 225.00 Problem 2: A high-rise building is to be supported on a reinforced concrete "raft" foundation (mat foundation) measuring 100 feet by 150 feet. This foundation contains 3,000 cu.yds of concrete to be placed in a single continuous pour. Concrete is to be brought to the site in concrete mixers that can deliver up to 75 cu.yds of concrete per hour. Three alternative means of conveying concrete from the trucks to the foundation are to be considered based on the following data: Wage Rates and Prices $30.00 per hr. $33.00 per hr. Labourer Labour Foreman Equipment Operator 25-Ton Mobile Crane 5" concrete pump Conveyor system $40.00 per hr. $1,015.00 per day $1,250.00 per day $1,150.00 per day Alternative 1- Crane and Bucket: using 2 mobile cranes with 1.25 cu.yd. buckets and a crew consisting of 1 foreman, 12 laborers, and 2 equipment operators, it is estimated that this concrete can be placed at the rate of 50 cu.yd/hr. Start up and finish in this method will take 3 hours. Alternative 2- Pumping: using two concrete pumps and a crew consisting of 1 foreman, 14 laborers and 2 equipment operators, it can be estimated that this concrete can be placed at the rate of 60 cu.yd/hr. Start up and finish will take the same 3 hours. Alternative 3- Belt Conveyor system: using two belt conveyor systems and a crew consisting of 1 foreman, 18 laborers, and 2 equipment operators, it is estimated that this concrete can be placed at the rate of 72 cu.yd./hr. Start up and finish in this method will take slightly longer (5 hours). Calculate and compare the unit cost ($/cu.yd) for the above three alternatives. Summarize your results in the following Table. Which alternative would you select? Method Labor Cost ($/cu.yd) Equipment Cost ($/cu.yd.) Total Cost ($/cu.yd) Mobile Crane & Bucket Pumping Belt Conveyor

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