Allowable loads on one bolt in seasoned wood loaded at both ends in normal duration
Length of Bolt in Main Member (mm) |
Bolt Diameter (mm) |
||
---|---|---|---|
Species Group | |||
I | II | ||
Parallel to Grain | Perpencular to Grain | Parallel to Grain | Perpencular to Grain |
Length of Bolt in Main Member (mm) |
Bolt Diameter (mm) |
||
---|---|---|---|
Species Group | |||
I | II | ||
Parallel to Grain | Perpencular to Grain | Parallel to Grain | Perpencular to Grain |
Species | Bending and Tension Parallel to Grain | Modulus of Elasticity in Bending | Compression Parallel to Grain | Compression Perpendicular to Grain | Shear Parallel to Grain |
---|---|---|---|---|---|
MPa | GPa | MPa | MPa | MPa |
Species | Bending and Tension Parallel to Grain | Modulus of Elasticity in Bending | Compression Parallel to Grain | Compression Perpendicular to Grain | Shear Parallel to Grain |
---|---|---|---|---|---|
MPa | GPa | MPa | MPa | MPa |
I. High Strength Group | II. Moderately High Strength Group | III. Medium Strength Group | IV. Moderately Low Strength Group |
---|
Problem
Solve for x from the following equations:
$xy = 12$ | $yz = 20$ | $zx = 15$ |
A. 2 | C. 4 |
B. 3 | D. 5 |
Problem
A germ population has a growth curve $Ae^{0.4t}$. At what value of $t$ does its original value doubled?
A. t = 7.13 | C. t = 1.73 |
B. t = 1.37 | D. t = 3.71 |
Problem
The sum and product of three distinct positive integers are 15 and 45, respectively. What is the smallest integer?
A. 1 | C. 5 |
B. 9 | D. 3 |
Problem
A contractor can buy a dump trucks for P800,000 each (surplus) or rent them for P1,189 per truck per day. The truck has salvage value of P100,000 at the end of its useful life of 5 years. Annual cost of maintenance is P20,000. If money is worth 14% per annum, determine the number of days per year that a truck must be used to warrant the purchase of the truck.
A. 200 | C. 198 |
B. 199 | D. 197 |
Problem
Mar wants to make a box with no lid from a rectangular sheet of cardboard that is 18 inches by 24 inches. The box is to be made by cutting a square of side x from each corner of the sheet and folding up the sides. Find the value of x that maximizes the volume of the box.
A. 4.3 inches | C. 10.6 inches |
B. 5.2 inches | D. 3.4 inches |
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