EBK MATERIALS FOR CIVIL AND CONSTRUCTIO
4th Edition
ISBN: 8220102719569
Author: 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.
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
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.
Chapter 10 Solutions
EBK MATERIALS FOR CIVIL AND CONSTRUCTIO
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_forwardNOTE: Refer to MM = 08 and DD = 26arrow_forward
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- A short round wood column with an actual diameter of 250 mm is to be con-structed. If the failure stress is 29.6 MPa, what is the maximum load that can be applied to this column, using a factor of safety of 1.3?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_forwardA short round wood column with an actual diameter of 10 in. is to be con-structed. If the failure stress is 4.3 ksi, what is the maximum load that can be applied to this column, using a factor of safety of 1.3?arrow_forward
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