Hello,
I have a one-story building with sloping parapets on the exterior walls and flat parapets on an interior portion (see white colored parapets in image below).
Currently, my model has the floor and the roof, with the roof having the deck and beams. I imagine I will need to create another story for adding the parapets, but since all the parapets are at varying heights above the roof, I do not know how to model that correctly. I am wanting to include the parapets in my model due to snow drift on the roof.
Please advise. I have attached my model file as well. Please feel free to try to implement the parapets into the model.
Skate Kiosk - rev02.rss
Thanks!
~Pascual
I would just apply the wind load as a User Defined Story force. You could run it once with the max height parapet, and once with the min height parapet, and then average the two forces if you don't want to calculate things manually.
True. Thinking about foundation loads for a foundation analysis, modeling in the parapet walls would help, no? In that essence, is there a way to model the parapets with varying heights?
You can model a wall and slope the top. You can also, starting in version 17.01, apply pressures to walls, but this is typically for tilt-up walls that are restrained by a roof diaphragm. In theory it should work, but it still requires you to apply the wind loads as pressures, not as program generated story forces, so it's probably more work in the end.
I ran a test model with such a wall and the pressure loads do get applied correctly. Wall out-of-plan stiffness is required to prevent huge displacements, but the method is OK.
Seth, how did you slope the top of the wall?
Also, for walls, can I only add wall openings on lateral walls and not gravity walls?