Creating holes in the slab

In most cases you need slab holes when editing stairways and chimneys. Slab holes always comprise parts of slabs, you can specify their form without any restriction and you can edit them afterwards.

Creating slab holes

This command creates slab holes in the slab. Slab holes always comprise parts of slabs, you can specify their form without any restriction and you can edit them afterwards.

Creating slab holes in one layer

This command creates slab holes in the active slab layer.

Creating slab holes in multiple slabs

It is often the case that there are slabs covering the entire floor of a building and there are different layered slabs in each room. This means that there are several slabs on each other. In this case you have to create a slab hole in the reinforced concrete slab and also in the layered slab. This command offers a very simple solution to this problem. You can create slab holes on multiple slabs. To do so, select the slabs for the slab holes.

Creating slab holes over stairs

You can select the stairs under the slab and then the hole will be created automatically for the actual stairs. 

The program will calculate the contour as follows:

• The width of the hole is defined by the width of stairs.
• For the depth the program will find the particular stair with a distance to the bottom of the slab equalling the headroom set. This aims at allowing an adult to walk up the stairs in an upright position.

You can set the “Headroom” value in the dialog box Options - Item settings - Stair - Stair standards.

Deleting slab holes

In order to delete the hole, select the contour of the slab hole.

Moving slab holes

With this command you can move existing slab holes.

• To move, select the contour of the existing slab hole.
• Specify the reference point of the slab hole for moving.
• Specify the new position of the slab hole.

Copying slab holes

You can copy slab holes within particular slabs.

• After selecting the command, specify the reference point of the slab hole, or select the keyword Repeat if you want to create multiple copies, and then enter the number of copies.
• Specify the position of the new slab hole.