quantity surveying Situation 8: Find the number of 4" x 8" x 16" concretehollow blocks to construct the fence considering the posts.Find the number of cement bags, sand and gravel usingclass "B" mixture under 40kg.12.00.15x20.00 m.PLAN20 m. x.20 m.4.0020 x 20 post402.60.60Section X-X.60 m.202.60Post20.60ELEVATION.60PLANSituation 9: The owner of a commercial lot wants to fencethe frontage of his lot with 15x20x40cm concrete hollowblocks. The fence is 3.50 meters high and 40 meters longprovided with a 25x25cm reinforced concrete posts spaceat 4.00 meters distance. Find the number of concretehollow blocks needed and number of cement, sand andgravel using class "A" mixture for footings (40kg).3.50 m.40.00 m.ELEVATION1525Concrete Post3.50 m.3.50 m.15 m. CHB FIGURE 1-1 MEASURING BOXTABLE 1-2 CONCRETE PROPORTIONCement in BagMixtureSandGravelClassProportion40 kg.50 kg.cu. m.cu. m.MABCAA1:1 %312.01:2 : 49.01: 2%57.51:366.099669.5.507.0.506.05.0.5055551.01.0501.01.022000

Situation 8:Step 1: Perimeter of wallP = 20 + 20 + 12 + 8 = 60 meters Step 2: Space length occupied…

Answered: Situation 8: Find the number of 4" x 8"…

Construction Materials, Methods and Techniques (MindTap Course List)

4th Edition

ISBN:9781305086272

Author:William P. Spence, Eva Kultermann

Publisher:William P. Spence, Eva Kultermann

Chapter35: Specialties, Equipment, And Furnishings

Section: Chapter Questions

Problem 18RQ

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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?
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?
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.
A steel pile (H-section; HP 360 1.491; see Table 18.1) is driven into a layer of sandstone The length of the pile is 18.9 m. Following are the properties of the sandstone: Unconfined compression strength = qu(lab) = 78.7 MN/m2 Angle of friction = 36 Using a factor of safety of 3, estimate the allowable point load that can be carried by the pile. Use Eq. (18.42).
A concrete pile 16 in. 16 in. in cross section is shown in Figure P12.13. Calculate the ultimate skin friction resistance by using the a. method [use Eq. (12.61) and Table 12.11] b. method c. method Use R=20 for all clays, which are normally consolidated.
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?
Redo Problem 12.30 assuming that the water table coincides with the top of the fill and that sat(fill) = 19.8 kN/m3. If the other quantities remain the same, what would be the downward drag force on the pile? Assume ' = 0.5fill. 12.30 Figure 12.49a shows a pile. Let L = 15 m, D (pile diameter) 305 mm, Hf = 3 m, fill = 17.5 kN/m3, and fill = 25°. Determine the total downward drag force on the pile. Assume that the fill is located above the water table and that = 0.5fill.
A steel pile (H-section; HP 310 125; see Table 12.1a) is driven into a layer of sandstone. The length of the pile is 25 m. Following are the properties of the sandstone: unconfined compression strength = qu(lab) = 80 MN/m2 and angle of friction = 36. Using a factor of safety of 3, estimate the allowable point load that can be carried by the pile. Use [qu(design) = qu(lab)/5].
Why is it also preferable to measure the concrete and all other work associated with an item before going on to measure the concrete in another item?
Solve Problem 12.13 using Eqs. (12.59) and (12.60). 12.13 A concrete pile 16 in. × 16 in. in cross section is shown in Figure P12.13. Calculate the ultimate skin friction resistance by using the α method [use Eq. (12.61) and Table 12.11] λ method β method Use for all clays, which are normally consolidated.
Redo Problem 18.10 using the method for estimating the skin resistance. 18.10 A concrete pile 15 m long with a cross section of 380 mm 380 mm is fully embedded in a saturated clay layer. For the clay, sat = 18 kN/m3, = 0, and cu = 80 kN/m2. Assume that the water table lies below the tip of the pile. Determine the allowable load that the pile can carry (FS = 3). Use the a method to estimate the skin resistance.

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