Questions and Answers

Common engineering questions answered by our professional engineers.

A: Eave height is measured from the ground to the intersection of the roof line with the wall line. Eave height is not the clear height under the bottom chord of the truss.

A: 10′-0″, 12′-0″, 14′-0″ and 16′-0″.

A: Seismic, wind and snow place loads on buildings. The two most severe load conditions are usually wind and snow.

A: Wind exposure will affect post size and sheathing requirements. Exposure will also effect post embedment depth, girt and even purlin and truss attachment requirements. When exposure increases from “B” to “C” the lateral and vertical pressures exerted on the building increase.

A: Exposure “B” is a more reduced exposure than exposure “C”. Exposure “B” is used when the building is surrounded by other buildings, trees and surface irregularities. Exposure “C” is used in generally open areas with little or no protection from the wind.