20 The figure below shows relativefrequency histogram for 50concrete cubes classifiedaccording to compressivestrength of the cubes. While x-axis represents the classmidpoints of compressivestrength, y-axis representsrelative frequency for concretecubes. Determine the harmonicmean of compressive strength* .of the cubesRelative Frequency Chart0.450.40.350.30.25능 0.27 0.150.10.0525.535.545.555.5Class Midpoints of Compressive StrengthRelative Frequency for Concrete Cubes

Total number of cubes = 50 Histogram

Answered: 20 The figure below shows relative…

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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30 5 I5 72とN 40 20 20 Given a beam made of six 2.3m long planks of the same material glued together and subjected to a vertical load of 72 KN. Will the glue between the top plank and the rest of the beam hold if the maximum allowable shearing stress of that glue is T = 10OMPA? Hint: Find the transverse shear stress at the location of interest and compare it with the allowable stress.
PROBLEM 3 340 mm The plates are connected by 9-20 mm bolts. Force F = 5Ở KN are applied at both plates in opposite directions as shown in Figure 3. Compute the following: A. Axial stress of each plate. B. Shear stress of each bolt. Assume that each bolt resists the applied force equally. %3D +F 150 mm 中 F 50 mm 340 mm Figure 3: Bolted Plates
3. Sample of steel bar has 12 mm diameter after performing tension test the failure load was 57 KN, tensile strength of this sample equal to * 504.24 MPa. 504.56MPA O 505.1MPA 503.24MPA All above are not correct
Determine the shear strain xy at corners A, B, C, D if the plate in Figure 5 distorts as shown by the dashed lines. Consider small strain assumption. 3 mm 300 mm y D 4 mm 400 mm- 12 mm B A mm 8 mm $2 mm X
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The rectangular plate is deformed into the shape shown by the dashed lines. Suppose that a = 280 mm and b = 420 mm. (Figure 1) Part A Determine the average normal strain along diagonal BD Express your answer using three significant figures. vec Figure (Eavg) BD = mm/mm Submit Request Answer 6 mm 2 mm 2 mm 16 mm Part B D C Determine the average shear strain Yzy at corner B relative to the x, y axes.. Express your answer to three significant figures and include the appropriate units. 2 mm HA B -3 mm (yB)zy = Value Units
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