Bottom chord

bottom chord

[′bäd·əm ‚kȯrd]
(civil engineering)
Any of the bottom series of truss members parallel to the roadway of a bridge.

Bottom chord

A chord along the lower perimeter of a truss; one of a pair with a top chord.

bottom chord

The lower longitudinal member of a truss.
References in periodicals archive ?
The berms themselves are designed to capture the bottom chord of the trusses being felled so the truss cannot move sideways in the wrong direction following impact.
The bottom chord of the trusses gets into a zone of the neutral line, therefore the internal forces are insignificant and even change the sign.
The bottom chord, especially the middle truss, is discolored due to severe exposure to the fire," they noted.
The optimal cross-sectional areas of the bottom chord and vertical web elements are found to be smaller, meanwhile cross-sectional areas of the top chord and inclined web elements--bigger in the case C2.
Oval hubs in the bottom chord of the domes' ribs allowed us to use two rectangular bars in parallel, reducing the overall arch count, and increasing structural efficiency.
The bottom chord adopts a channel cross section with a beam height of 1.
The chambers of single cable and cable truss bottom chord f are equal to 20 m.
At each of the seven spacer locations, paint glue on a spacer and the bottom chord where it fits, and position the spacer on the bottom chord, against the spacer stops.
The longer central span has a segmented bottom chord to give additional depth of truss over the middle third of the span at its point of maximum moment.
Nail through the bottom chord of the joist into the top plate with 16d framing nails to secure the rafters.
The roof support system above the one-story building features open web trusses and bottom chord bracing, which fillet weld connections.