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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Question
Chapter 10, Problem 10.30QP
To determine
Write the four conditions that cause wood decay and occurrence of insects, and how the preservative eliminates wood decay.
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Untreated wood can deteriorate when four conditions required for decay and insects occur. States these four conditions. How do preservatives reduce or eliminate wood decay?
Question 13
Which one of the following statements regarding durability is FALSE?
O a. Use class 5 includes the most challenging service condition for wood.
O b. Biological deterioration includes attack by bacteria, fungi, insects, or moulds.
O c.
Natural durability class 1 has the lowest durability.
Od. The highest risk for wood decay is in wet and warm conditions.
Question 34
Which one of these anatomical features of wood cells DOES NOT reduce wood permeability?
a. Inter-vessel pits
O b. Pit aspiration
C. Resin pockets
O d. Tyloses
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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Similar questions
- Untreated wood can deteriorate when four conditions required for decay andinsects occur. States these four conditions.arrow_forwardA. Differentiate the types of seasoning of lumber. 1. Methods of Seasoning of Lumber 2. Artificial Seasoning of Lumber B. Give at least 5 common causes of wood decay. C. Types of Preserving Wood Processarrow_forwardQuestion 14 Pick the correct definitions (one or more): To thrive, wood decaying fungi require: ☐a. a very high pH Ob. carbon dioxide O c. nitrogen 0 d. temperature below 5 °C e. moisturearrow_forward
- What is the fiber saturation point? What is the effect of the fiber saturationpoint on the shrinkage of wood in the different directions?arrow_forwardC O N S T R U C T I O N M A T E R I A L S A N D T E S T I N G not less than 3 sentences Differentiate softwood from hardwood. What is wood seasoning? Why do wood need to be seasoned? Explain the classification of wood production.arrow_forwardQ) What are the effects of defects in wood and what causes these defects? Solve it earlyarrow_forward
- For the purpose of designing wood structures, laboratory-measured strength properties are adjusted for application conditions. State five different applica-tion conditions that are used to adjust the strength properties.arrow_forwarda) Describe two (2) types of timber product and its usage b) Seasoning is very important to achieve good quality timber. i) Define timber seasoning. ii) Describe the method of seasoning carried out in timber. iii) Explain two (2) types of defects caused by insufficient seasoning.arrow_forwardA piece of wood is tested for moisture content. Its mass before drying is 850 grams and the mass after drying is 525 grams. What is the moisture content of wood?arrow_forward
- 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.arrow_forwardThe moisture content of wood test was performed according to ASTM D4442procedure and produced the following data:Weight of specimen in the green condition = 317.5 gWeight of oven-dry specimen = 203.9 gCalculate the moisture content of the given wood.arrow_forwardQuestion 19 What fungus only cause a disfiguring of wood and not a loss in mechanical properties? O a. Staining fungi O b. Soft rot fungi О с. Brown rot fungi O d. White rot fungiarrow_forward
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