Concrete Wall Layout

Like columns, walls can be placed on or off of the established grids. You will only use the On-Grid feature in this section. Walls can only be placed while the current material is set to either "Concrete" or "Other".

Select Layout > Walls > Add On-Grid. The Add Concrete Wall On-Grid Mode dialog box will open:
Set Framing to Lateral.
Type 12 (300) for Thickness
Type 4 for f’c (30 for fcu).
Type 145 (2350) for UW (this is used to calculate E).
Type 150 (2400) for UW for Self – Weight (this is only used if the RAM Manager self weight criteria has walls selected).
Type 0.2 for Poisson’s Ratio
Type 0.35 for Cracked Factor
Leave the other fields as their defaults
Click [Single]

This will take you back to the graphics screen:

With the cursor, place a wall by clicking once at the beginning and once at the end of the wall.
Note: In single mode, a white line appears after selecting the start point of a wall. This "rubber band" displays the position of the wall before the other end is located. The same graphic also appears when laying out slab edges, deck polygons, line loads, etc.
Start by clicking at grid F-4
Move the cursor to grid F-5.
Once there, click to complete the wall layout.
Add walls between the following grid intersections:
From B.4-3 to B.4-2
From B.4-2 to C-2
From D-2 to D.4-2
From D.4-2 to D.4-3

Note: In the modeler, walls and columns are placed according to the center location. In reality a concrete wall between two pilasters may be shifted slightly from the column centerline or gridline. For simplicity of modeling and analysis, it is highly recommended to place the columns and walls on the same centerline regardless.

Right click to return to the Layout Walls dialog box.
Change the framing from Lateral to Gravity.
Click [Single] to return to the graphics mode and add two walls
From B.4-3 to C-3
From D-3 to D.4-3
The screen should then look like Figure 2.

Note: These "flange walls" could be modeled as either gravity members or lateral members. As gravity members they will not participate in the lateral finite element analysis in RAM Frame. The "L" shaped walls will act together to resist the lateral loads in both the N-S and E-W directions. In the RAM Concrete Wall program special boundary conditions can be put into place to enforce the placement of special confinement. This will be discussed in the Shear Wall section.