big box building lateral system
big box building lateral system
(OP)
Most of the buildings I work on are much smaller than a big box store, and are often very different in other ways too. My question isn't specific for particular project, but just a general inquiry.
Is it more common to use shear walls fro the lateral force system or frame action between the roof framing and the columns?
Is it more common to use shear walls fro the lateral force system or frame action between the roof framing and the columns?






RE: big box building lateral system
Braced frames would be the second most efficient lateral force resisting system, because they resist lateral forces through AXIAL loading in their members (and axially loaded members are more efficient than bending members).
Frame action is the least efficient way to resist lateral loads, but must be used if the other systems are unavailable.
DaveAtkins
RE: big box building lateral system
Usually you see braced frames - X-braces or chevron braces.
If the building has tilt-up concrete walls, they can be utilized as shearwalls.
RE: big box building lateral system
JAE,
I'm not experienced with precast wall panels. If you have them on a job and want to use them as shear walls, do you indicate on the drawings what the required in-plane shear capacity of the panels is, or do wall panel manufacturers have catalogs with this value, similar to precast floor plank allowable load tables.
RE: big box building lateral system
RE: big box building lateral system
With the tilt panels, we usually design the wall and reinforcing, checking it for shear capacity, etc. but leave the erection embeds and any additional steel required due to erection up to a separate entity - usually a firm that prepares the shop drawings for the wall panels themselves.
For precast, you need to do preliminary design to ensure that the thickness you are looking at is appropriate for the applied shear, wind loads, etc., but the final design is by the precaster and based upon load criteria that you should supply.
RE: big box building lateral system