flusher
Super Member
- Joined
- Jun 4, 2005
- Messages
- 7,538
- Location
- Sacramento
- Tractor
- Getting old. Sold the ranch. Sold the tractors. Moved back to the city.
I'm shopping for a metal carport 20ft wide x 36 ft deep x 9ft wall, A-frame style with gable ends to cover the last 36 ft of my 20-ft wide gravel driveway. Tehama Co requires a building permit and also requires that the structure and the foundation designs be certified for 85 mph wind load (exposure C), no snow load, and 1500 psf soil bearing capacity.
My initial inclination was to pour two concrete footings (16" W x 16" D x 36ft long) and use concrete anchors to attach the carport. I don't want someone with a backhoe messing up my expensive gravel driveway while digging the trenches for the footing. So if I go this way, I'll have to dig the trenches by hand--good exercise, but not that appealing otherwise.
How about ground anchors? The carport vendors offer those 36"-48" long helical mobile home anchors. Are these any good? Do the carport installers normally do a standard soil test to decide what size anchor to use? Or do they just guess?
How about rebar-type anchors? Are these any good? How long do these have to be to handle that wind load I mentioned above?
TIA for your help.
My initial inclination was to pour two concrete footings (16" W x 16" D x 36ft long) and use concrete anchors to attach the carport. I don't want someone with a backhoe messing up my expensive gravel driveway while digging the trenches for the footing. So if I go this way, I'll have to dig the trenches by hand--good exercise, but not that appealing otherwise.
How about ground anchors? The carport vendors offer those 36"-48" long helical mobile home anchors. Are these any good? Do the carport installers normally do a standard soil test to decide what size anchor to use? Or do they just guess?
How about rebar-type anchors? Are these any good? How long do these have to be to handle that wind load I mentioned above?
TIA for your help.