Materials for Civil and Construction Engineers (2nd Edition)
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ISBN: 9781292154411
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Chapter 10, Problem 10.19QP
To determine
Check whether the structural size specimens or small, clear specimens can be tested to determine the
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Collect a variety of samples of wood species used in construction and conduct various tests, such as:-
Tension and compression tests.
Compute the modulus of elasticity of the wood species whose stress–strainrelationship is shown in Figure 10.12, using both the SI and English units.Compare the results with the typical values shown in Table 1.1 in Chapter 1and comment about the results.
What are the main advantages of engineered wood products over natural-tim-ber members?
Chapter 10 Solutions
Materials for Civil and Construction Engineers (2nd 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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- Based on the discussed defects of wood, which of these do you think acceptable forconstruction? Defend your answerarrow_forwardif the stress at failure and bending is 7200 PSI for small, perfect samples of a certain species of wood, what is the allowable bending stress for a piece of lumber with defects that are judged to reduce the strength by 40%?arrow_forwardIf a wood beam is designed for use at 2 months event only, should the designer increase or decrease the allowable stress relative to the allowable stress used for normal applications? How much increase or decrease?arrow_forward
- For the purpose of designing wood structures, laboratory-measured strengthproperties are adjusted for application conditions. State five different application conditions that are used to adjust the strength properties.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_forwardWhat is the typical load duration used in designing wood structures? If awood beam is designed for use at a one-week event only, should the designer increase or decrease the allowable fiber stress relative to the allowable stress used for normal applications? How much increase or decrease?arrow_forward
- What is Moisture content of wood? What is the relationship between shrinkage and moisture content.arrow_forwardCalculate the modulus of elasticity of the wood specimen with the stress-strain relationshipshown in figure below.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_forward
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