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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?Question 3 True or false: As a perfectly elastic material, wood recovers from applied load rapidly. Select one: O True O FalseWhat is Moisture content of wood? What is the relationship between shrinkage and moisture content.
- 3. List and discuss the five main types of defects in timber.Question 25 What factors make wood more flexible in the longitudinal direction? a. low moisture content b. knots c. high microfibril angle Od. high densityDraw 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.
- If 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?Difference between hardwood grades and softwood grades.By the method of composite volumes, determine the centroidal coordinates of the volume. 70 60 y -45 80- 90 -160 Dimensions in mm
- 10.6 The moisture content of wood test was performed according to ASTM D4442 procedure and produced the following data: Weight of specimen in the green condition = 317.5 g Weight of oven-dry specimen Calculate the moisture content of the given wood. 203.9 g %3DWhen designing a wood column, which of the following adjustment factors should be estimated in order to select an initial trial shape? Check all that apply. CD (load duration factor) CP (column stability factor) CF (size factor) CL (beam stability factor)The cross-sectional dimensions of a 4-ft-long wood member at 30 percent moisture content is 1.5 x 7.5 in. and its weight is 11 lb. At oven-dry condition, its dimensions and weight are 1.35 x 6.8 in. and 10.2 lb., respectively. What is its specific gravity at 30 percent moisture content?