User Guide

RISA-3D User’s Guide

Version 5.0

Click in any cell in the last column, which is the z-z Moment column. Now click

the Sort button on the Window Toolbar to access the sorting options. Select

“Abs Max to AbsMin” and click OK.

You'll be returned to the Forces spreadsheet with the members sorted according to

their absolute maximum z-axis bending moment value.

Select to view the member stresses.

Select to view the torsional stresses, including warping normal

and shear stresses for the members that warp.

Select to view the member deflections. This spreadsheet also

shows the deflections as a ratio of member length (the “L/y” ratios) providing an

easy check against deflection criteria such as “L/360”.

Select to view the suggested redesign shapes (we'll use these

later).

Select and choose the Hot Rolled tab.

Here we have the AISC code checks, i.e. ratio of actual to allowable stresses, per

ASD 9th Edition criteria. Failing members would be highlighted with red text.

The allowable stresses, Cb and Cm values and controlling equation are listed. If

we were doing LRFD based design, we would see the member strengths listed

here (along with the code check value).

Select the Cold Formed tab to view the cold formed steel code checks.

The design strengths Pn, Mny, & Mnz are listed along with the code check values

and controlling equation. Factored design stresses and controlling equation are

also listed.

Select the Wood tab to view the NDS code checks for our wood truss members.

The factored design stresses and controlling equation are also listed. Notice that,

because our chord members are relatively slender, the program reports that they

exceed the maximum Le/d value that the NDS gives for compression members.

Select the Concrete Beams tab.

Notice that there are not any concrete results for this load combination. This is

because when we defined this load combination, the checkbox for concrete design

was not checked. Later, when we solve batch and envelope solutions we’ll see

how this prevents us from getting unnecessary steel or wood code checks for load

combinations that are specifically intended for concrete design.

Select from the Results Toolbar to view the plate stresses.

Select

to view the plate forces.

Select to view the corner forces.

Select to view the material take-off.