G Fink Roof Truss

Designed in accordance with the 2015 international residential code sections r502 11 1 and r802 10 2 and referenced standard ansi tpi 1.

G fink roof truss.

Roof live load 25 lb ft2 b. Build a fink truss to bolster a floor roof or deck. A fink roof truss is traditionally the most commonly used truss type providing a simple adaptable and cost efficient roofing solution. Semi rigid pitch breaks with fixed heels member end fixity model was used in the analysis and design of this truss.

Albert fink designed his truss bridges for several american railroads especially the baltimore and ohio and the louisville and nashville. The fink truss bridge was patented by albert fink in 1854. The web members form a w to provide a high strength structure with good load carrying capacity. Click to add item 26 spreadweb residential roof truss 5 12 pitch 87 to the compare list.

Each truss is responsible for a 2 foot section through the roof as trusses are typically placed 24 apart and thus must carry 12 on either side. The fink roof truss is a simple webbed truss design that provides the most economical roof solution for roof structures. Insulation is fitted by mbc to the bottom chord of the fink roof truss at ceiling level. Fink trusses were originally invented for the purpose of beefing up bridges but many contractors now use them to increase the strength of interior structures.

Unbalanced roof live loads have been considered for this design. The 1865 annual report of the president and directors of the louisville and nashville railroad company lists 29 fink truss bridges out of a total of 66 bridges on the railroad. The fink is a basic webbed truss design that provides the most economical roof solution. The fink design enables roof loads to be transferred down to the wallplate.

In a fink truss the internal joists are arranged in a w shape ensuring even weight distribution from one end to the other. Residential roof trusses manufactured with no. Calculate the tension and compression forces on each member given the load requirements below. 1 grade yellow pine.