Determine the number of modular bricks necessary for the front wall if the house shown in the figure. Add 4% for waste. Determine the cost to lay the brick. It takes a mason 6 labor hours and a laborer 8.5 labor hours to construct 100 square feet of brick. The average hourly wage for a mason is $42.33 and for a laborer is $21.03. BO 1 ·30⁰ -6¹-8⁰1- 3¹ Elevation -16' 24-

Determine the number of modular bricks necessary for the front wall if the house shown in the figure. Add 4% for waste. Determine the cost to lay the brick. It takes a mason 6 labor hours and a laborer 8.5 labor hours to construct 100 square feet of brick. The average hourly wage for a mason is $42.33 and for a laborer is $21.03. BO 1 ·30⁰ -6¹-8⁰1- 3¹ Elevation -16' 24-

Fundamentals Of Construction Estimating

4th Edition

ISBN:9781337399395

Author:Pratt, David J.

Publisher:Pratt, David J.

Chapter11: Pricing Concrete Work

Section: Chapter Questions

Problem 11RQ

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Calculate total cost per cubic yard of concrete, given the following: Concrete materials and batching costs = $70/cy Trucking = $6.00/cy Paving equipment = $340.00/hr - Paving labor = $500.00/hr Paver production = 120 cy/hr Incidentals $4.00/cy Overhead and profit = 20% of direct costs 1.87.0 = O2.106.8 O 3.104.4 4.99.6
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
Estimate the total amount of cost for concrete works (class “B”) based from the following given: 10-pcs of F1 (1.2m x 1.2m x 0.3 m) 10-pcs of C1 (0.3 m x 0.3 m x 4.1 m) Floor area of 100mm thk slab-on-grade = 53 sq.m The cost of cement (40kg per bag) = 210 per bag. The cost of sand is 710 per cubic meter. The cost of gravel is 1900 per cubic meter.
Q5/ Find job mix formula by using mathematical method. Aggregate Specification Sieve Size A B C Limits 25 mm 100 100 100 100 12.5 mm 100 100 97 90-100 4.75 mm 100 100 55 60-90 1.18 mm 98 79 38 28-58 0.3 mm 98 39 28 6-38 0.15 mm 11 16.5 7 10-23 0.075 mm 4.1 8 2.15 4-10
Q5/ Find job mix formula by using mathematical method. Aggregate Specification Sieve Size A B Limits 25 mm 100 100 100 100 12.5 mm 100 100 97 90-100 4.75 mm 100 100 55 60-90 1.18 mm 98 79 38 28-58 0.3 mm 98 39 28 6-38 0.15 mm 11 16.5 7 10-23 0.075 mm 4.1 8 2.15 4-10
Convert the output of 9.9 square feet of concrete masonry unit per labor hour to labor hours per square foot.
A cement grinding mill "A" with a capacity of 50 tons per hour employs P12,000 per tonforged steel grinding balls with a wear rate of 100 grams per ton of cement processed.Another cement mill of the same capacity, "B," utilizes P50,000 per ton high chromesteel grinding balls with a wear rate of 20 grams per ton of cement processed.Determine the more cost-effective grinding mill, keeping all other factors constant. do not use excel, use formula
epare a datasheet and calculate the cost of plastering cement (1:5), 20mm thick for 50m². Also compute final total cost 0.5 skilled labor $70/day T3 unskilled labor $20/day Mixing charge of cement mortar $7/m³ 7 Lead in KM S.# Rate at Material Metal Cart Conveyance Charge Sand track source, Toll Charge track track 1 $110 1.2 0.8 $5/KM/2ton 1 $30 1.0 0.9 0.5 $3/KM/m³ $5 0.6 0.7 $1/KM/m² $2/25m² WID 2 3 Cement Sand Paint per Ton m³ m²
13. A contractor needs 375 m³ of aggregate base for a highway construction project. It will be compacted to a dry unit weight of 18.9 kN/m³. This material is available in a stockpile at a local material supply yard at a water content of 7.75%, but is sold by the metric ton and not by cubic meters (ton 3 1000kg). a. How many tons of aggregate should the contractor purchase? Round your answer to the nearest whole number. b. A few weeks later, an intense rainstorm increased the water content of the stockpile to 14%. If the contractor orders the same quantity for an identical section of the highway, how many cubic meters. of compacted aggregate base will he produce?
Given a Concrete Mix Ratio of 1:2:3, what is the computed number of cement bags per cubic meter of concrete? * Your answer Given a Concrete Mix Ratio of 1:2:4, what is the computed required volume of gravel for 1 cubic meter of concrete? * Your answer A team of 2 skilled mason and 4 laborers are assigned to work on a 20 cubic meter volume of concreting work. They finished the job in 5 days, working 8 hours a day. What is there Productivity rate for the activity? Your answer A concrete vibrator was rented for concreting works. Rent is at 750 Pesos per day. Concrete pouring was computed to be completed in 5 days. but was actually finished in 4 days. How much was budgeted for equipment rental? "
5. Using the concrete price quotation shown on Figure 11.2, calculate the full price of 4000 psi concrete with type I colored cement, 1/2" aggregate, and air entrainment to be delivered to the site in December: (10 pts) ABC CONCRETE PRODUCTS, INC. PROJECT: XYZ Office Bulding. Townvle. We are pleased to quote you as follows for the supply of ready-mix delivered to the above project: Aggregate Size Delivered Price Additional for Type III or Type V Additional for 4-6% Alr Mix Strength (psi) Cement Type per CY Entrainment $120.00 $135.00 $140.00 5150.00 $155.00 $5.00 $5.50 $6.50 $7.00 $7.50 3000 3500 3/4 3/4 $4.00 $6.00 $7.00 $7.50 $8.00 1. 2. 4000 4500 3. 3/4 3/4 5. 5000 3/4" The above prices are based on ABC Concrete's standard mix designs. All products are subject to a municipal sales tax of 7%. For 1/2" aggregates add 56.50 per CY to the above prices. For polypropylene fibers add $17.00 for 2 lbs. per CY. For pigments (red, black, tan, or brown) add $5.50 per CY. Calclum Chlorlde (1%):…
The labour unit cost of cast in place concrete referring to the crew calculations is: O $37.22/m3 $29.91/m3 $15.01/m3 O None of the above QUESTION 18 The labour unit cost of cast in place concrete referring to the man-hour calculations is: O $30.61/m3 O $14.93/m3 O $35.98/m3 O None of the above QUESTION 19 The man hour productivity rate for footings formwork is: O 0.33 mh/m2 O 0.83 mh/m2 O 0.24 mh/m2