Allowable loads on one bolt in seasoned wood loaded at both ends in normal duration

Table TMBR-4: Allowable loads, in kiloNewton, on one bolt in seasoned wood loaded at both ends (double shear) 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

Properties of Philippine Woods at 80% Grade

Table TMBR-3: Properties of Philippine Woods at 80% Grade
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

Properties of Philippine Woods at 50% Grade

Table TMBR-2: Properties of Philippine Woods at 50% Grade
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

 

Group Species of Philippine Woods

Table TMBR-1: Group Species of Philippine Woods
I. High Strength Group II. Moderately High Strength Group III. Medium Strength Group IV. Moderately Low Strength Group

 

Properties of Wide Flange Sections

properties-of-section-w-flange.gifThe technical content of this page is for educational purposes only and not intended for professional work.
 

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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