Materials for Civil and Construction Engineers (4th Edition)
4th Edition
ISBN: 9780134320533
Author: Michael S. Mamlouk, John P. Zaniewski
Publisher: PEARSON
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Chapter 10, Problem 10.20QP
To determine
The modulus of rupture and the apparent modulus of elasticity.
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A static center-point bending test was performed on a 50 X50 X760 mm wood sample according to ASTM D143 procedure (span between supports = 710 mm) If the maximum load was 2.67 kN, calculate the modulus of rupture.
A static center-point bending test was performed on a 50mm x 50mm x 630mm wood sample according to ASTM D143 procedure. (span between supports = 600mm). If the maximum load was 2,500N, calculate the modulus of rupture of the wood.
SIZED-BOND PAPER.
1. A center-point bending test was performed on a 2 in x 4 in wood lumber according to ASTM D198
procedure with a span of 4 ft. and the 4 in side is positioned vertically. If the maximum load was 240
kips and the corresponding deflection at the mid-span was 2 in, calculate the modulus of rupture and
the apparent modulus of elasticity
Chapter 10 Solutions
Materials for Civil and Construction Engineers (4th Edition)
Ch. 10 - What are the two main classes of wood? What is the...Ch. 10 - Prob. 10.2QPCh. 10 - Prob. 10.3QPCh. 10 - Discuss the anisotropic nature of wood. How does...Ch. 10 - Prob. 10.5QPCh. 10 - Prob. 10.6QPCh. 10 - Prob. 10.7QPCh. 10 - Prob. 10.8QPCh. 10 - Prob. 10.9QPCh. 10 - Prob. 10.10QP
Ch. 10 - Prob. 10.11QPCh. 10 - Prob. 10.12QPCh. 10 - Prob. 10.13QPCh. 10 - Prob. 10.14QPCh. 10 - Prob. 10.15QPCh. 10 - Prob. 10.16QPCh. 10 - Prob. 10.17QPCh. 10 - Prob. 10.18QPCh. 10 - Prob. 10.19QPCh. 10 - Prob. 10.20QPCh. 10 - Prob. 10.21QPCh. 10 - Prob. 10.22QPCh. 10 - Prob. 10.23QPCh. 10 - A wood specimen was prepared with actual...Ch. 10 - A pine wood specimen was prepared with actual...Ch. 10 - Prob. 10.26QPCh. 10 - Prob. 10.27QPCh. 10 - Prob. 10.28QPCh. 10 - Prob. 10.29QPCh. 10 - Prob. 10.30QPCh. 10 - Prob. 10.31QPCh. 10 - Prob. 10.32QPCh. 10 - Prob. 10.33QP
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- A static third-point bending test was performed on a 100mm x 100mm x 5000mm wood sample according to ASTM D143 procedure. (span between supports = 4800mm). If the maximum load was 2,900N, calculate the modulus of rupture of the wood.arrow_forwardA third-point bending test was performed on a 100 * 150 mm wood lumber according to ASTM D198 procedure with a span of 1.8 m and the 150 mm side is positioned vertically. A strain gauge is glued at the center point between the supports. The strain gauge is zeroed at the start of the test when the force is zero. A strain of 0.00456 is measured when the combined load is 6.672 kN and the load–strain curve is in the linear range. Determine the flexural modulus of elasticity. If the maximum combined load on both loading bearings was 22.722 kN, calculate the modulus of rupture.arrow_forwardA center-point bending test was performed on a 2x4 wood lumber according to ASTM D198 procedure with a span of 4 ft and the nominal 4-inch side is positioned vertically. If the maximum load was 240 lbs and the corresponding deflection at midspan was 2.4 inches, calculate the modulus of rupture and the apparent modulus of elasticity. Please remember that the 2x4 is the nominal dimension size, not the actual size of the specimen. In the 3rd Edition, please see Experiment 29 in the back of the book for the equations. In the 4th Edition, see Experiment 30.arrow_forward
- A center-point bending test was performed on a 2 * 4 wood lumber according to ASTM D198procedure with a span of 4 ft and the 4 in. side is positioned vertically. If the maximum loadwas 240 kips and the corresponding deflection at the mid-span was 2.4 inches, calculate themodulus of rupture and the apparent modulus of elasticity.arrow_forwardA wood with a dimension 53 mm and 131 mm with 131 mm is side positioned vertically is subjected to ASTM D198 Test the length of the sample is 51 cm. If the modulus of rupture is limited to 100 mpa, using the following method determine if the sample passed in the test. Value of P is 134 kN. a. two-point b. third point c. center-point loadingarrow_forwardA center-point bending test was performed on a 2 * 4 wood lumberaccording to ASTM D198 procedure with a span of 4 ft and the 4 in. sideis positioned vertically. If the maximum load was 240 kips and the corre-sponding deflection at the mid-span was 2.4 in., calculate the modulus ofrupture and the apparent modulus of elasticity. See Experiment No. 30 forequations.arrow_forward
- A wood specimen having a square cross section of 2-inch x 2-inch (actual dimensions) was tested in bending by applying a load at the middle of the span, where the span between the simple supports was 28 inches. The deflection under the load was measured (see below). Plot the load versus deflection relationship. Identify the proportional limit on the diagram. Calculate the modulus of rupture. Does the modulus of rupture truly represent the extreme fiber stresses in the specimen? Comment on the assumptions used to compute the modulus of rupture and the actual response of the wood specimenarrow_forwardA two-point bending test was performed on a 6"x9" wood lumber according to ASTM D198 procedure with a span of 10' and the 9" side is positioned vertically. If the location of both loading bearings are 4' from their nearest respective support and if the maximum load on both loading bearings was 7500lbs, calculate the modulus of rupture.arrow_forwardA pine wood specimen was prepared with actual dimensions of 50 mmx50 mm x 250 mm and grain parallel to its length. The deformation was measured over a gauge length of 200 mm. The specimen was subjected to compression parallel to the grain failure. The load- deformation results are shown in table below: Load (kN) Deformation (mm) 8.9 0.457 17.8 0.597 26.7 0.724 34.5 0.838 43 0.965 52.9 1.118 62.01 1.27 71.03 1.422 80.1 1.588 89 1.765 99.6 1.956 108 2.159 111.3 2.311 112 2.456 a. Using a computer spreadsheet program, plot the stress-strain relationship. b. Calculate the modulus of elasticity. С. What is the failure stress?arrow_forward
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