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ASCE 7 Regular Shaped Building Definition
2

ASCE 7 Regular Shaped Building Definition

ASCE 7 Regular Shaped Building Definition

(OP)
I have a simple (maybe not) question that is perplexing me. Maybe someone can shed some light on the definition of "the building is a regular shaped building or structure as defined in section 6.2" as it pertains to wind loading.
Lets say I have the following building: Plan dimension of 50'(east-west) x 80'(north-south), rigid frames oriented in the north-south direction so I have 3 main frames at 25' centers. The roof is 1:12 slope with the ridge located 25' from north wall (55' from south wall), eave height at north wall is 16', eave height at south wall is 13'-6".
Common sense says not a regular shaped building - Then again where's the line? Anyone got any thoughts?

RE: ASCE 7 Regular Shaped Building Definition

I think its a regular shaped building.  It has no ells, reentrant corners, setbacks, anything like that.  Its just a box that presents a rectangular face to the wind on one face and a trapezoid on the other.  Nothing irregular about it at all.  The fact that the ridge is not at the center does not by itself make the building irregular.


Regards,


chichuck

RE: ASCE 7 Regular Shaped Building Definition

Check your building for all categories of vertical and horizontal irregularities.  If your building is not found to fall into ANY of the "defined" categories, your building is regular.

RE: ASCE 7 Regular Shaped Building Definition

If your building is not a "Y", "T", "L", or stepped elevations, it is a regular shape building.  So, a rectangular building is regular shape building.

You might want to look at the "Guide to the Use of the Wind Load Provisions of ASCE 7-02".  There are some good examples in there.

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