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MindTap Construction for Spence/Kultermann's Construction Materials, Methods and Techniques, 4th Edition, [Instant Access], 4 terms (24 months)
4th Edition
ISBN: 9781305635289
Author: William P. Spence; Eva Kultermann
Publisher: Cengage Learning US
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Chapter 18, Problem 5RQ
To determine
Why surfaced green softwood lumber is produced more than softwood lumber.
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Chapter 18 Solutions
MindTap Construction for Spence/Kultermann's Construction Materials, Methods and Techniques, 4th Edition, [Instant Access], 4 terms (24 months)
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- What is the fiber saturation point? What is the effect of the fiber saturationpoint on the shrinkage of wood in the different directions?arrow_forwardDifference between hardwood grades and softwood grades.arrow_forwardP01 : What does the grade stamp on the lumber identifies? a. Species of lumber b. The mill that produced the piece c. Inspection agency d. Moisture content at the time of surfacing e. Dimension of the lumbar f. All of the above P02: A 4x16 (green) DF-L swan timber beam and a 3.5x15 DF glulam beam are considered for use in a structure with an expected moisture contnet of 10%. Find the expected shrinkage of each membeer through the depth assumiong the initial moisture content is 30% for the swan lumber and 14% for the glulam.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_forwardDraw a graph to show the typical stress–strain curve for wood. On the graph,show the modulus of elasticity. State three different factors that affect thisrelationship.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
- What are the two main classes of wood? What is the main use of each class?State the names of two tree species of each class.arrow_forwardDefine the Compression strength of steel fiber reinforced and unreinforced shotcrete?arrow_forwardWhen dimension lumber is used where the moisture content exceeds 19%, what is the applicable wet service factor, CM, for tension stress? 0.8 1.0 0.85 0.9arrow_forward
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