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 11, Problem 11.12QP
To determine
Describe why engineered wood is stronger and has better properties than natural wood.
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Briefly describe why engineered wood is stronger and has better properties than natural wood.
Collect a variety of samples of wood species used in construction and conduct various tests, such as:-
Tension and compression tests.
The mechanical properties of wood are in the axial direction (along the fibers) and the transversal direction (perpendicular to the fibers). Explain briefly how it changes.
Chapter 11 Solutions
Materials for Civil and Construction Engineers (4th Edition)
Ch. 11 - Prob. 11.1QPCh. 11 - Prob. 11.2QPCh. 11 - Prob. 11.3QPCh. 11 - Prob. 11.4QPCh. 11 - Prob. 11.5QPCh. 11 - Prob. 11.6QPCh. 11 - Prob. 11.7QPCh. 11 - Prob. 11.8QPCh. 11 - Prob. 11.9QPCh. 11 - What are the functions of aggregate used in...
Ch. 11 - Prob. 11.11QPCh. 11 - Prob. 11.12QPCh. 11 - What are the benefits of adding dispersed steel...Ch. 11 - Getting measurements from Figure 11.20, determine...Ch. 11 - Three 6 in. 12 in. concrete cylinders with...Ch. 11 - Prob. 11.16QPCh. 11 - Prob. 11.17QPCh. 11 - Prob. 11.18QPCh. 11 - Prob. 11.19QPCh. 11 - Prob. 11.20QPCh. 11 - Prob. 11.21QPCh. 11 - Prob. 11.22QPCh. 11 - Prob. 11.23QPCh. 11 - Prob. 11.24QPCh. 11 - Prob. 11.25QPCh. 11 - Prob. 11.26QPCh. 11 - Prob. 11.27QPCh. 11 - Prob. 11.28QPCh. 11 - Prob. 11.29QPCh. 11 - Prob. 11.30QPCh. 11 - A circular FRP composite rod with continuous and...
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- c) Discuss the non-isotropic characteristics of wood.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_forwardLaminated wood is sometimes used in the construction of highly stressed aircraftcomponents. This wood can be identified by its A. parallel grain construction. B. similarity to standard plywood construction. C. perpendicular grain construction.arrow_forward
- 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_forwardQuestion 25 What factors make wood more flexible in the longitudinal direction? a. low moisture content b. knots c. high microfibril angle Od. high densityarrow_forward
- Question 3 True or false: As a perfectly elastic material, wood recovers from applied load rapidly. Select one: O True O Falsearrow_forwardGive 3 distinct examples of applications: a. Particle-reinforced composites b. Fiber-reinforced composites c. Structural compositesarrow_forwardCompare the benefits of engineered composites to those of timber. Give examplesof applications in which composites would be more beneficial compared totimber. Give additional examples of applications where the use of timber would bemore advantageous.arrow_forward
- In the course of your internship at a development company you are asked to make a technical recommendation related to the optimum use of material for structural purposes. In this case you are given two types of timber/wood sections. The dimensions of the sections are shown in the following Figure 1. 150mm 200mm 75mm 50mm FIGURE I Propose a composite "T" section beam that will give the maximum moment of Inertia (Ixx) in horizontal (or x-x). First Determine the position of neutral axis (centroid) x-x of the composite. Then determine the distance of the individual centroid to the composite centroid.arrow_forwardList five different advantages of composite materials over conventional materials.arrow_forwardHow many types of stainless steel are there? Explain general and characteristic properties of these stainless steels.arrow_forward
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