Create a Penetration Through a Platform

The user can insert a circular or square penetration through the floorplate of any platform in either of two ways:

• Explicitly, by specifying the position and dimensions of the penetration. The user can use this method, for example, to allow a stairway or ladder to give access within a platform rather than routing it externally to give access through a gap in the surrounding handrail.

• Implicitly, by picking an existing piping element which penetrates the floorplate. The position of the floor penetration is determined from that of the picked element and the dimensions of the penetration are derived so as to give a specified clearance around the picked element. The user would use this method to create a penetration for a pipe to pass through the platform floor, thus: