For joists with variable loading, RAM Steel Beam Design is capable of selecting steel joists from constant shear joist load tables. The table RAMKCS.CSJ is supplied with the Beam Design module. It contains the Steel Joist Institute KCS-series joists.

The table is based on the load tables published by the Steel Joist Institute (S.J.I.). The members in this table are ordered by economy, in this case by least weight. Since this may vary from manufacturer to manufacturer the user should review the joist table file and make adjustments as appropriate.

The tables may be in either English or SI units.

The tables must be in the Tables directory.

Constant Shear Joist tables can be created or modified by the user. Use spaces, not tabs, between items. The file must have the extension .CSJ.

The Constant Shear Joist table has the following format:

The character in the first line indicates the system of units used in the table: an E indicates English units and an S indicates SI units.

Each subsequent line lists the joist information:

 Label Depth Wt I M V w

where:

Label

is the name of the joist (13 characters or less),

Depth

is the depth (in. or mm),

Wt

is the weight per unit length (lb/ft or kg/m),

I

is the moment of inertia (in⁴ or cm⁴),

M

is the Moment capacity (k-ft or kNm),

V

is the Shear capacity (kip or kN),

w

is the maximum total uniform load (lb/ft or N/m).

 E
12KCS1 12 6.0 43 17.417 2.4 550
10KCS1 10 6.0 29 14.333 2.0 550
14KCS1 14 6.5 59 20.583 2.9 550
10KCS2 10 7.5 37 18.750 2.5 550
14KCS2 14 8.0 77 27.000 3.4 550
12KCS2 12 8.0 55 22.833 3.0 550
16KCS2 16 8.5 99 29.083 4.0 550
…
30KCS5 30 21.0 934 152.750 9.2 550
xxSJxx 0 0.0 99999 99999 99999 99999