Net sectional area of a tension member is equal to its gross section ...
The net area at any section is equal to the gross area minus the deduction for holes at that section. The deduction for the hole is the product of the hole diameter and the thickness of the material.
View all questions of this test
Net sectional area of a tension member is equal to its gross section ...
Explanation:
The net sectional area of a tension member is the area of the cross-section of the member that is effective in carrying the load under tension. This area is reduced by the presence of any holes in the member, such as rivet holes.
The correct formula for calculating the net sectional area of a tension member is:
Net sectional area = Gross sectional area - Total area of rivet holes
The total area of rivet holes is the sum of the areas of all the holes in the member.
Explanation of options:
a) plus the area of the rivet holes: This is incorrect because adding the area of the rivet holes to the gross sectional area would increase the net sectional area, which is not correct.
b) divided by the area of rivet holes: This is incorrect because dividing the gross sectional area by the area of rivet holes would not give the net sectional area.
c) multiplied by the area of the rivet holes: This is incorrect because multiplying the gross sectional area by the area of rivet holes would not give the net sectional area.
d) minus the area of the rivet holes: This is the correct answer because subtracting the area of the rivet holes from the gross sectional area gives the net sectional area.
In summary, the net sectional area of a tension member is equal to its gross sectional area minus the total area of rivet holes.