Wood Truss Span Table

wood truss span table
    truss span
  • A span supported by trusses.
  • a set of data arranged in rows and columns; "see table 1"
  • postpone: hold back to a later time; "let's postpone the exam"
  • Present formally for discussion or consideration at a meeting
  • a piece of furniture having a smooth flat top that is usually supported by one or more vertical legs; "it was a sturdy table"
  • Postpone consideration of
  • A golf club with a wooden or other head that is relatively broad from face to back (often with a numeral indicating the degree to which the face is angled to loft the ball)
  • the hard fibrous lignified substance under the bark of trees
  • Such material when cut and used as timber or fuel
  • United States film actress (1938-1981)
  • The hard fibrous material that forms the main substance of the trunk or branches of a tree or shrub
  • forest: the trees and other plants in a large densely wooded area

Laser Display Menu System
Laser Display Menu System
The laser projects the outline of the truss down onto the table for fast assembly. There is also a small icon of a triangle projected at each end which is the Menu icon. A wave of a reflector (glued onto a ruler, in this case) called "the mouse" brings up this menu. Waving the mouse over these icons changes the laser display again. The File Folder, for example, (next to the end on the right) brings up a small image of all the trusses on a given job. The assembler can then choose which truss to work on next. Multiple lasers work in tandem, so the "display" can be shifted up or down the 160' table and multiple trusses can be displayed next to one another. A truss can span two or more laser displays, such that in theory a 160' long truss could be displayed (although that's really not a practice wood truss length). Everyone was amazed that each laser cost $20k, but I actually thought that seemed pretty cheap. That's about what a high-end digital projector for a home theater goes for. Of course, this manufacturer has about 15 of them. However, they save a great deal of time in set up and even just walking back and forth to the computer terminal.
Howe Truss Double Span, Indiana, Lawrence County, Williams Covered Bridge (11,065)
Howe Truss Double Span,  Indiana, Lawrence County, Williams Covered Bridge (11,065)
The 376 foot long bridge (402 feet with overhangs) was built by Joseph J, Daniels in 1884 using the Howe Truss design. Daniels built covered bridge through central Indiana and in most he employed the Burr-Arch Truss design. The William Covered Bridge was an exception to his usual construction method.

wood truss span table
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