What would be the average compressive strength of concrete if the load at failure of the 3 trials are 55, 100 kg, 54, 800 kg, and 55, 200 kg. Diameter of the sample is 6". о 30.6 MPа о 31.6 MPа о 30.1 МPа o 31.1 MPa

What would be the average compressive strength of concrete if the load at failure of the 3 trials are 55, 100 kg, 54, 800 kg, and 55, 200 kg. Diameter of the sample is 6". о 30.6 MPа о 31.6 MPа о 30.1 МPа o 31.1 MPa

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Compressive Strength is conducted for each aggregate with 3 specimens for each no. of days of curing. The recorded maximum load when the specimen breaks are as follows 7 Days (kN) | 486.73 14 Days (kN) 28 Days (kN) 678.8 ... 746.3 3/8" Sample 513.14 694.2 754.7 360.71 679.8 759.8 7 Days (kN) 14 Days (kN) 28 Days (kN) 231.86 339.8 377.7 3/4" Sample 252.04 339.6 381.1 206.69 343.3 379.9 Compute the compressive strength, in psi, for each size of aggregate on each no. of days of curing. Please indicate if the sample passed the required strength for each no.of days of curing. Conversion: 1lb-f = 4.488 N Attach your solution on the box below, image type.
TITLE: ANALYSIS OF Reinforced Concrete Beams (SERVICEABILITY REQUIREMENTS). PROBLEM: Check the serviceability requirements in terms of deflections. Assume concrete weighs 23.5 KN/m³, fy = 414 MPa, and f'c = 28 MPa. PLI = 133 kN PLI = 89 kN WDL = 29 KN/m + Selfweight of beam 1.2 m 1.2 m 2.4 m 78 тm 4 - #32 800 тm 722 тm 400 тm COMPUTATION: Required: 1. Check serviceability requirement using 480 (span length) as the allowable. a. Short term deflection b. Long term deflection assuming 50 % of liveload is continuously applied for 4 years.
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A concrete column reinforced with steel rods has a square section of 250 mm by 250 mm and can support a load of 700 KN. Calculate the minimum number of steel rods if each will have a diameter of 6 mm which will be needed if the stress is not to exceed 8 x 106 N/m2 . The elasticity of the steel is 200 x 109 N/m2 and concrete is 12 x 109 N/m2 .
Civil Engineering help Table 1 Test No. Rate of deformation Avg. sample length (mm) Avg. sample diameter (mm) Ring factor Cell pressure (kPa) (mm/min). (AIP/N) 100 74.7 38.1 1.27 0.9845 400 75.3 37.7 Table 2 Deformation (mm) Force gauge (divisions) Test 1 Test 2 0.5 22 24 1.0 46 44 1.5 2.0 62 68 80 82 2.5 102 106 132 3.0 121 134 3.5 149 4.0 157 173 5.0 6.0 7.0 182 200 219 231 241 194 195 8.0 197 90 198 200 199 | 196 246 10.0 252 251 244 11.0 12.0 By producing Mohr circles and deviatoric stress vs axial strain plots of the tests using the data presented, determine the average Young's modulus, E (MPa) from the most linear portion of the tests deviatoric stress vs axial strain nints Enterani l ...
Problem No. 2: The cross-section of the 8-m long simply supported beam is shown below. If the concrete has f'. = 21 MPa, fy = 414 MPa and the unit weight of concrete is 23.5 kN/m³, compute the following: a. The cracking moment and the uniform load that the beam could carry in addition to its self-weight. b. The bending moment and the uniform load that the beam could carry in addition to its self-weight using transformed area method. C. The nominal moment and the uniform load that the beam could carry in addition to its self-weight. 375 mm 2 - 25 mm 600 mm 75 mm 150 mm 250 250 mm mm add. 7 to the length of the beam so that's going to be 600. 7
PROBLEM TO SOLVE: 600 mm 400 mm Using fe' = 28 MPa, Mmax = +320 kNm Determine the following: a. Cracking Moment (kNm) 6-25mm diam. b. Compressive Stress felt by concrete (MPa) c. Tension Stress felt by the tension bars (MPa)
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Strength of Materials Answer should be 0.378 x 10-3 m2 ; 13.02 kN/m :) A concrete beam of rectangular section is 10 cm wide and is reinforced with steel bars whose axes are 30 cm below the top of the beam. Estimate the required total area of the cross-section of the steel if the maximum compressive stress in the concrete is to be 7.5 MN/m2 and the tensile stress in the steel is 135 MN/m2 beam is subjected to pure bending. What bending moment would the beam withstand when in this condition? Assume that Young's modulus for steel is 15 times that for concrete and that concrete can sustain no tensile stresses.
Compressive Strength is conducted for each aggregate with 3 specimens for each no. of days of curing. The recorded maximum load when the specimen breaks are as follows 7 Days (kN) 14 Days (kN) 28 Days (kN) 746.3 754.7 486,73 678.8 3/8" Sample 513.14 694.2 360.71 679.8 759.8 7 Days (kN) 14 Days (kN) 28 Days (kN) 231.86 339.8 377.7 3/4" Sample 252.04 206.69 339.6 381.1 343.3 379.9 Compute the compressive strength, in psi, for each size of aggregate on each no. of days of curing. Please indicate if the sample passed the required strength for each no.of days of curing. Conversion: 1lb-f = 4.488 N Attach your solution on the box below, image type. Use the editor to format your answer