(a) John has completed various tests in the lab and determined the principal stresses at a specific point of a concrete roof slab. John from his tests found the following stresses for the principal planes. Ox = -20 MPa Txy = -6 MPa Oy = +10 MPa Tyx = 6 MPa Do you think that John has done all his calculations correct? Please explain. (Maximum half of a page please). (6)

(a) John has completed various tests in the lab and determined the principal stresses at a specific point of a concrete roof slab. John from his tests found the following stresses for the principal planes. Ox = -20 MPa Txy = -6 MPa Oy = +10 MPa Tyx = 6 MPa Do you think that John has done all his calculations correct? Please explain. (Maximum half of a page please). (6)

Steel Design (Activate Learning with these NEW titles from Engineering!)

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter1: Introduction

Section: Chapter Questions

Problem 1.5.6P: The data in Table 1.5.3 were obtained from a tensile test of a metal specimen with a rectangular...

See similar textbooks

Similar questions

Compare the engineering and true secant elastic moduli for the natural rubber in Example Problem 6.2 at an engineering strain of 6.0. Assume that the deformation is all elastic.
The results of a tensile test are shown in Table 1.5.2. The test was performed on a metal specimen with a circular cross section. The diameter was 3 8 inch and the gage length (The length over which the elongation is measured) was 2 inches. a. Use the data in Table 1.5.2 to produce a table of stress and strain values. b. Plot the stress-strain data and draw a best-fit curve. c. Compute the, modulus of elasticity from the initial slope of the curve. d. Estimate the yield stress.
A tensile test was performed on a metal specimen having a circular cross section with a diameter 0. 510 inch. For each increment of load applied, the strain was directly determined by means of a strain gage attached to the specimen. The results are, shown in Table: 1.5.1. a. Prepare a table of stress and strain. b. Plot these data to obtain a stress-strain curve. Do not connect the data points; draw a best-fit straight line through them. c. Determine the modulus of elasticity as the slope of the best-fit line.
Dont round off initial values, round off final ans only pls asap
Dont round off initial values, round off final ans only pls asap
Dont round off initial values, round off final ans only pls
In a laboratory test of a beam loaded by end couples, the fiber al layer AB as shown are found to increase 30 x 10 8 mm while those at CD decrease 60 x 10 -3 mm in the 280- mm-gage length. Using E = 150 GPa, determine the flexural stress at the bottom fiber. Answer must be in MPa, Given: a = 50 mm, b = 120 mm, and c - 80 mm. gage length a mm A b mml Cmm
Two cylindrical rods AB and BC are welded together at B and loaded as shown. Knowing that the average normal stress must not exceed 175 MPa in rod AB and 150 MPa in rod BC, determine the smallest allowable values of d1 and d2. 300 mm 250 mm A B C dy 40 kN -dr 30 kN
i need the answer quickly
technically, its one question but with multiple parts
A bar obtained by bonding together pieces of steel (Es = 29 x 106 psi) and brass (E = 15 x 106 psi) has the cross section shown (Fig. a). Determine the maximum stress in the steel and in the brass when the bar is in pure bending with a bending moment M = 40 kip-in. 0.4 in. 3 in. Brass 0.75 in. Steel Brass 0.4 in. (a) 1) Composite bar.
Please answer asap with four decimal places