1 in. (1 in. = 2.54 cm). We also determine in the lab its weight and volume at various litions. The following results were obtained: Condition Green Air-dry Oven-dry Weight, W (gms.) 223.1 160.9 143.5 Volume, V(cm³) 396.2 360.9 334.2 Calculate the values of moisture content (M %), specific gravity (G) and unit weight (w) for each corresponding condition. Calculate the volumetric shrinkage that occurs between (i) the green-wood and the air-dry conditions and (ii) between the green-wood and oven-dry conditions

1 in. (1 in. = 2.54 cm). We also determine in the lab its weight and volume at various litions. The following results were obtained: Condition Green Air-dry Oven-dry Weight, W (gms.) 223.1 160.9 143.5 Volume, V(cm³) 396.2 360.9 334.2 Calculate the values of moisture content (M %), specific gravity (G) and unit weight (w) for each corresponding condition. Calculate the volumetric shrinkage that occurs between (i) the green-wood and the air-dry conditions and (ii) between the green-wood and oven-dry conditions

Fundamentals Of Construction Estimating

4th Edition

ISBN:9781337399395

Author:Pratt, David J.

Publisher:Pratt, David J.

Chapter12: Pricing Masonry, Carpentry, And Finishes Work

Section: Chapter Questions

Problem 6RQ

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During an experiment on a square timber specimen 75 mm x 75 mm in cross – section, a shortening deflection of 0.22 mm was recorded on a gauge length L of 300 mm when a load 36 KN was applied. The modulus of elasticity of the timber E will equal to. O a. 8626.3 MPa O b. 8727.3 MPa O C. 8878.3 MPa O d. 8525.3 MPa
Awood [E-12 GPa] beam is reinforced by bonding a steel [E-210 GPa) sheet to the upper surface of the wood beam, as shown in the sketch of the cross section. With the transformed-area method, steel sheet (2) was transformed to an equivalent amount of wood (1), and the cross-sectional properties of the transformed cross section were determined. The neutral axis of the transformed section is located a - 20.0 mm above the lower edge of the wood board (i.e., point K) and b- 6.8 mm below the upper edge of the steel sheet (i.e., point H). The moment of inertia of the transformed cross section is 2.1363x106 mm². A bending moment of M₂ - 520 N-m is applied to the beam cross section. Calculate (a) the tension normal stress in the wood at point K. (b) the compression normal stress in the steel at point H. Part 1 OK' Steel (2) Answer: Wood (1) Part 2 Calculate the magnitude of the tensile normal stress in the wood at point K. e Textbook and Media i Save for Later OH Answer: H eTextbook and Media K…
What can you observe with the data below after testing the shear test of wood parallel to the grain? also, what can you conclude with this values in connection with using it as a material in construction? determine the importance of shear test of wood parallel to the grain
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A plank of wood is to be tested for its compressive strength, the cross-section of the timber is 200mmX200mm and 500mm tall. The result of the test gave 408KN before breaking. given E=9.72GPa Determine the maximum compressive stress taken by the wood a. 10.20MPA O b. 10.20Pa O c. 0.0102MPA O d. 0.0102Pa 22. Determine the elongation of the wood before breaking a. 5.246mm b. 52.46mm c. 0.05246mm O d. 0.5246mm
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g) the maximum bending stress in timber. Enter your answer in MPa to 2 decimal places.
answer A only . Answer just by virtual work method
Manov Steel Inc. has a rolling mill that produces sheet steel with a nominal thickness of 0.125 inch. Suppose that the specification limits are given by LSL = 0.120 and USL = 0.130 inch. According to historical data, the actual thickness of a random sheet produced by the mill is normally distributed with mean and standard deviation of u = 0.125 and o = 0.0025. (a) What are the lower and upper natural tolerance limits (LNTL and UNTL) for individual sheets of steel? (b) What are the lower and upper control limits (LSL and USL) if we use a control chart that plots the average thickness of samples of size n = 4? (c) What will be the percentage nonconforming, given the above values for (LNTL, UNTL) and (LSL, USL)? What is the process capability index C? Do you consider this process capable of meeting its performance specifications? (d) Suppose that the process mean suddenly shifts from 0.125 to 0.1275. What happens to the process capability index C and the percentage nonconforming?
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