1:3 gauged mortar mix Estimating data for unit rate pricing Material Mortar: Details Waste Cost 5% Cement Sand Bricks 1m³ cement, 1400kg 3m3 sand, 4800kg Shrinkage £90.00 per tonne 25% £30.00 per tonne 102.5mm brickwork, to 7% 600 half-brick Assume 10m² be in Staffordshire Smooth Blue Facing £250.00 per thousand delivered to site, Perforated. Laid in stretcher bond, gauged mortar 1:3 0.05m³ mortar for 10m² Unloading Cement Per tonne 1 labourer £30 Bricks ΝΑ Labour details Gang Brickwork 2 Bricklayers 1 labourer 1 Plant Mortar Mix 100-litre mixer Type of Plant bricklayer 60 brick per m² Included in cost of material cost 1 Bricklayer £60.00 per hour 1 labourer £30 per hour Cost Output 4m³/hour £20.00 per hour Output Output of Allow 15% for overheads and profit

1:3 gauged mortar mix Estimating data for unit rate pricing Material Mortar: Details Waste Cost 5% Cement Sand Bricks 1m³ cement, 1400kg 3m3 sand, 4800kg Shrinkage £90.00 per tonne 25% £30.00 per tonne 102.5mm brickwork, to 7% 600 half-brick Assume 10m² be in Staffordshire Smooth Blue Facing £250.00 per thousand delivered to site, Perforated. Laid in stretcher bond, gauged mortar 1:3 0.05m³ mortar for 10m² Unloading Cement Per tonne 1 labourer £30 Bricks ΝΑ Labour details Gang Brickwork 2 Bricklayers 1 labourer 1 Plant Mortar Mix 100-litre mixer Type of Plant bricklayer 60 brick per m² Included in cost of material cost 1 Bricklayer £60.00 per hour 1 labourer £30 per hour Cost Output 4m³/hour £20.00 per hour Output Output of Allow 15% for overheads and profit

Fundamentals Of Construction Estimating

4th Edition

ISBN:9781337399395

Author:Pratt, David J.

Publisher:Pratt, David J.

Chapter11: Pricing Concrete Work

Section: Chapter Questions

Problem 7RQ

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Similar questions

Calculate the cost per cubic yard to place concrete using each of the alternatives described. The work in both cases consists of placing 140 cubic yards of concrete in footings. a. Using a crane and bucket at a price of $225 per hour, including an operator, with a crew consisting of 6 laborers, a cement finisher, and a foreman. The concrete will be placed in 7 hours using this setup, and transportation of the crane costs $390. b. Using a concrete pump at a price of $295 per hour, including an operator and a crew consisting of 5 laborers, a cement finisher, and a foreman. With this setup, concrete is placed in 6 hours and transportation of the pump costs $290.
Why is it recommended that the estimator begin a takeoff of concrete work by measuring the quantity of concrete in an item rather than the amount of formwork?
Prepare a typical bay estimate based on the following information: a. Bay size of 350 feet and a building perimeter of 1,100 feet. b. There are 50 bays in the building. c. Unit prices: • Concrete piles: $950.00 each • Concrete pile caps: $725.00 each • Slab-on-grade: $12.50 per sq. ft. • Structural steel frame: $4.90 per sq. ft. • Roof structure: $10.75 per sq. ft. • Roofing: $8.20 per sq. ft. • Plumbing & HVAC: $9.80 per sq. ft. • Electrical: $6.10 per sq. ft. • Exterior foundations: $100.00 per linear ft. • Exterior walls: 728.00 per linear ft.
Why is nothing added to the concrete quantities for wastage at the time of the takeoff?
How is concrete consolidated?
Two materials, A and B, are to be separated using two unit operations, 1 and 2. The feed has 10 tons/h A and 4 tons/h B. The split (fraction of material rejected by each operation) is given in Table P5-14. a. Which sequence of operations, (l?2) or (2?1), will yield the greatest recovery of material A? b. What will be the purity of material A using that sequence? c. What will be the efficiency of separation for the entire process train with regard to material A using the Worrell-Stesed equation?