with the cross section as shown using a Class "A" conc:
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Subject: Construction Materials and Testing
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- Determine effective depth (d) for the shown beam. Size of stirrups 10 mm, Nominal aggregate size 19 mm, layer spacing = 30 mm and minimum concrete cover= 40 mm. 2425 3428 .. ww 0027.22 Casing with an ID of 10.05 in. and a strength in tension of 450,000 lbf in the joints and 629,000 lbf in the pipe body is being suspended from the surface while being cemented. If the effective weight of the casing being sup- ported is 240,000 lbf and a safety factor of 1.4 is desired, how much surface pump pressure can be applied safely to displace the cement? The casing burst is rated at 3,130 psi (for zero axial stress). Solve to the nearest correct solutionprecast concrete pipe is to be constructed under road .if the (DH) = 0.224m, the pipe diameter was 0.75m and n=0.014, (r/R) =0.066, k1=0.25, K2=1.0, K bent = 0.75, L=40m, find the discharge O 500 l/s O 5501/s O 0.25cumecs 1.2cumecs O 500cumecs
- Determine the required quantities of cement (40 kg/bag), gravel, sand and water needed to construct the concrete culvert 1.2 km long with the cross section as shown using a Class "A" concrete. -0.70nt -0.70m- R2.50m 4.80m 2.00m 0.75m 6.90mCalculate the maximum. uniform service live load (in kN/m) that can be applied to the beam before cracking. Use the following: b = 329 mm h = 539 mm t = 171 mm f'c = 25 MPa Beam span = 6.80 meters (fully fixed on both ends)Determine the concrete proportion of 2 slabs of the same size of the slab shown using class "C" mixture 40 kg/bag of cement. Instruction: For your answer, rounding of decimal places: 0.1-0.4 round up to 0.5 and 0.5-0.9 round up to nearest whole number - for sand and gravel; |always round up to nearest whole for cement. O10 4.00m 6.00m cement: 18 bags, sand: 1.5 cu. m, gravet: 2.5 cu, m cement: 36 bags, sand: 2.5 cu. m, gravet: 5 cu. m cement: 22 bags, sand: 1.5 cu. m. gravet: 2.5 cu. m cement: 29 bags, sand: 2.5 cu m gravet: 5 cu. m cement: 12 bags, sand: 1.5 cu. m, gravet: 25 cu m None of the choices SHOW COMPLETE SOLUTION WITH FBD
- A footing (F1) has dimensions 1.4m x 1.4m x 0.3m. How many bags of cement shall be used for 9 pieces of F1? Use class "C" concrete and 40kg/bag of cement. ROUND UP your answer to the nearest whole number. TABLE 1-2 CONCRETE PROPORTION Class AA A B C Cement Mixture 40 kg. / Bag 1:11/2: 3 12.0 1: 2:4 9.0 1:21/2: 5 7.5 1: 36 6.0 50 kg. / Bag 9.5 7.0 6.0 5.0 Sand cu.m. .50 .50 .50 .50 Gravel cu.m. 1.0 1.0 1.0 1.02. A concrete road 13m wide, 12 km long, is designed with a thickness as shown in the following cross section. Specifying Class A concrete, determine the quantity of 40 kg cement, sand and gravel required. Use 40kg cement bags. 0.60 m 0.25 m 0.15 13.0 m 0.25 mA footing (F1) has dimensions 1.3m x 1.3m x 0.3m. How many bags of cement shall be used for 7 pieces of F1? Use class "B" concrete and 40kg/bag of cement. DO NOT round off your final answer. Class AA A B C TABLE 1-2 CONCRETE PROPORTION Cement Mixture 40 kg. /Bag 50 kg. Bag 9.5 7.0 6.0 5.0 1:11/2: 3 1: 2 :4 1:21/2: 5 1: 3:6 12.0 9.0 7.5 6.0 Sand cu.m. .50 .50 .50 .50 Gravel cu.m. 1.0 1.0 1.0
- A certain weight of concrete (y = 25 kN/m³) must be attached to the outside bottom of a metal box having a volume of 0.1 m³ and SG beam = 0.65. (a) What is the weight (N) of the metal box? (b) What must be the weight (N) of concrete to cause both to sink in water? (c) What is the volume (m³) of the concrete? (d) What is the combined buoyant force (N) of the concrete and metal box?A footing (F1) has dimensions 1.2m x 1.2m x 0.3m. How many bags of cement shall be used for 10 pieces of F1? Use class “C” concrete and 40kg/bag of cement.A barangay road 3.00 m wide and 2 km long after the base preparation requiresconcreting. Find the number of bags cement, sand, and gravel in cu.m. required usingclass “B” concrete if the slab is 15 cm thick. (Use both 40 and 50 kg for cement)