Wind load on project platform attached to a building

[SKJ25POL]

A new platform/ catwalk with grating on it is going to be added to different elevations on the exterior of enclosed building.
Can someone please tell me what direction we apply wind load? up -down - in the plane of platform?
I appreciate a reference example or an illustartion.

Thank you so much
Any sketch will help to understand your comment. I appreciate it
Freshman engineer

 

[steellion]

If it's attached to the building, I would conservatively use loads for roof overhangs from ASCE.

 

[MotorCity]

Typically for catwalks w/ grating and an open handrail system, I apply a horizontal wind load to the stringers only. Any wind load on the railings, posts, and grating will be negligible.

 

[mike20793]

Where is the project located, or more specifically, is it subject to high winds?

 

[Leftwow]

I neglect all wind forces on grating, just apply it to x and z horizontal directions in the negative and positive and put the wind forces directly on all the beams. We usually ignore hand rails for that but if you want to include that you can use a Cf of 0.7 for the hand rails. We try to be conservative with the wind loading on the beams too, that way we can neglect wind loading on hand rails.... mainly because in some instances can cause torsion and we don't have a lot of time to get that involved with it. Also, watch your story drift due to wind, if it's over a few inches then it may need to be redesigned. The parameter we use for platforms is story drift < (height of structure/200).