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4025 4th Ave S Ste. 2    Fargo, ND 58103       PH: 701.282.4477




      " Our mission is to exceed customer expectations in pride, quality, reliability, service and creativity."

Northland Truss is 20yrs. old!


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ALLOWABLE UNIT STRESS INCREASEA percentage increase in the stress permitted in a member, based on the length of time that the load causing the stress acts on the member. The shorter the duration of the load, the higher the percent increase in the allowable stress.
AXIAL FORCEA push (compression) or pull (tension) acting along the length of a member. Usually measured in pounds.
AXIAL STRESSThe axial force acting at a point along the length of a member, divided by the cross-sectional area of the member. Usually measured in pounds per square inch.
BENDING MOMENTA measure of the bending effect on a member due to forces acting perpendicular to the length of the member. The bending moment at the given point along a member equals the sum of all perpendicular forces, either to the left or right of the point, times their corresponding distances from the point. Usually measured in inch-pounds.
BENDING STRESSThe force per square inch of area acting at a point along the length of a member resulting from the bending moment applied at that point. Usually measured in pounds per square inch.
COMBINED STRESSThe combination of axial and bending stresses acting on a member simultaneously, such as occurs in the top chord (compression + bending) or bottom chord (tension + bending) of a truss.
CONCENTRATED LOADAdditional loading centered at a given point. An example is a crane or hoist hanging from the bottom chord at a panel point.
DEAD LOADAny permanent load such as the weight of the member itself, purlin, sheathing, roofing, ceiling, etc.
DEFLECTIONDownward vertical movement of a truss due to dead and live loads.
LIVE LOADAny loading which is not of a permanent nature such as snow, wind, movable concentrated loads, furniture, etc.
REACTIONForces acting on a truss through its supports that are equal but opposite to the sum of the dead and live load thereby holding the truss in a stable position.
STRESS DIAGRAMGraphical solution of axial forces as they interact within the members of a truss.


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