Answered: P01 : What does the grade stamp on the…

P01 : What does the grade stamp on the lumber identifies? a. Species of lumber b. The mill that produced the piece c. Inspection agency

Construction Materials, Methods and Techniques (MindTap Course List)

4th Edition

ISBN:9781305086272

Author:William P. Spence, Eva Kultermann

Publisher:William P. Spence, Eva Kultermann

Chapter18: Wood, Plastics, And Composites

Section: Chapter Questions

Problem 11RQ

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Concept explainers

Fluid Materials

In general terms, anything that flows can be termed as a fluid. In other words, a fluid is any substance that cannot resist shear forces and deforms continuously under the application of external shear forces. Fluid materials differ completely from solid materials such as metals and alloys. For instance, if we consider two infinitesimally small cross-sectional areas of fluid materials and solid materials, and apply shear forces to these elements, both the elements will undergo deformation. Upon releasing the shear force, the element of the solid materials will regain its original orientation, but the element of the fluid materials will keep on deforming continuously under the action of the shear force.

Question

P01 : 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.

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