Pearson eText for Materials for Civil and Construction Engineers -- Instant Access (Pearson+)
4th Edition
ISBN: 9780137505586
Author: Michael Mamlouk, John Zaniewski
Publisher: PEARSON+
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Question
Chapter 10, Problem 10.3QP
To determine
Selection of wood sample for construction based on the specific gravity value.
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A simple lab test for specific gravity, G, on two samples of lumber indicate
that sample A has G = 0.4 and sample B has G = 0.5 Based on this informa-tion alone, which wood sample would you choose as a structural member for
your construction project? Briefly explain why.
3. A simple lab test for specific gravity, G, on two samples of lumber indicate that sample A has G
0.4 and sample B has G = 0.5. Based on this information alone, which wood sample would be
best for a structural member of a construction project?
%3D
Sample A
Sample B
Either Sample A or Sample B
Both Sample A and Sample B
A simple lab test for specific gravity, G, on two samples of lumber indicatethat sample A has G = 0.4 and sample B has G = 0.5 Based on this information alone, which wood sample would you choose as a structural member for your construction project? Briefly explain why.
Chapter 10 Solutions
Pearson eText for Materials for Civil and Construction Engineers -- Instant Access (Pearson+)
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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Similar questions
- Collect a variety of samples of wood species used in construction and conduct various tests, such as:- Tension and compression tests.arrow_forwardWhat is the fiber saturation point? What is the effect of the fiber saturationpoint on the shrinkage of wood in the different directions? How does thisphenomenon affect the properties of lumber?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_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 simple lab test for specific gravity (SG), on two samples of timber indicate thatsample A has SG=0.4 and sample B has SG=0.5. Based on this information alone,which wood sample would you choose as a structural member for your constructionproject? Briefly explain your reason.arrow_forwardHow does fiber saturation point phenomenon affect the properties of lumber?arrow_forward
- A 100 mm * 100 mm wood lumber was subjected to bending with a span of 1.5 m until failure by applying a load in the middle of its span. The load and the deflection in the middle of the span were recorded as shown in Table P10.21. a. Using a computer spreadsheet program, plot the load–deflection relationship. b. Plot the proportional limit on the graph. c. Calculate the modulus of rupture (flexure strength).arrow_forwardA wood specimen was subjected to bending until failure by applying a load inthe middle of its span. The specimen has a cross section of 25 mm * 25 mm(actual dimensions) and a span of 350 mm between the simple supports. Theload and the deflection in the middle of the span were recorded as shown inTable P10.22.a. Using a computer spreadsheet program, plot the load–deflectionrelationship.b. Plot the proportional limit on the graph.c. Calculate the modulus of rupture (flexure strength).arrow_forwardConstruction lumber can be cut from the tree using one of two methods or acombination of them. Name these two methods and show a sketch of each.What is the main advantage of each method?arrow_forward
- To evaluate the mechanical properties of wood, structural-size specimens orsmall, clear specimens can be tested. Which technique is more important?Why? What is the most common test used in each technique?arrow_forwardplease answer these two question 1.Explain the reason that flexural modulus of elasticity and compression test modulus of elasticity must be considered separately when both the flexural test and the parallel to grain compressive test caused normal stresses parallel to the grain of the wood. 2. Discuss the difference between isotropic and orthotropic materials for wood.arrow_forwardA wood specimen was subjected to bending until failure by applying a loadin the middle of its span. The specimen has a cross section of 1 in. * 1 in.(actual dimensions) and a span of 14 in. between the simple supports. Theload and the deflection in the middle of the span were recorded as shown inTable P10.22.a. Using a computer spreadsheet program, plot the load–deflectionrelationship.b. Plot the proportional limit on the graph.c. Calculate the modulus of rupture (flexure strength).arrow_forward
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