Steel Joist Chord Angle Sizes

Does the sji publish or designate chord member sizes for particular joists.

Steel joist chord angle sizes. Two types are pictured below. 127 sji standard specifications k series 23. The chord size designations range from 01 to 12. The steel joist institute sji standard specifications have tables for top chord extensions and extended ends that provide the load capacity for various lengths of types s1 through s12 and r1 through r12 extensions.

Are there special requirements for long top chord extensions on k series joist. It is important to note that although an s type can be as. Lrfd load table adopted by the steel joist institute may 1 2000 revised to may 18 2010 effective december 31 2010 joist extensions are commonly furnished to support a variety of overhang conditions. These joists easily handle spans that other systems cannot handle while their lightweight construction makes them less costly than crustal steel beams.

The size of the top moment plate seat angle or haunch stabilizer plate and all required welds are to be determined by the specifying professional. The chord size designation assigned. The chart below gives the dates for each joist series from the beginning of the steel joist institute in 1928. There are no published inertias for j series joists and each manufacturer used a different array of chord angles so there could be a small variance.

The second is the. Chord angles extended only and an r type top chord and bearing seat angles extended respectively. These ranges refer to the differ ent angle sizes being used. There are no published inertias for j series joists and each manufacturer used a different array of chord angles so.

Or you can physically measure the top chord and bottom chord and calculate a value. Therefore as a performance. Discover the easiest way to specify steel joists and joist girders. Lh series joists range in depth from 18 to 48 and can span up to 96 0.

The use of k series joists in the framing of floors and roofs offers huge advantages when compared to wood truss and steel beam systems. You can use the tabulated live load values for l 360 deflection and back into the required inertia.