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C O M M O N F O U N D A T I O N R E P A I R S
S U P P O R T P O S T S:
Houses constructed with perimeter foundations use SUPPORT POSTS to support FLOOR BEAMS in the craw space area under a house.
The FLOOR BEAMS support the entire floor system (as it spans across to the opposite side foundation) and also may provide support for some of the interior walls.
A SUPPORT POST consists of a 4" x 4" structural member (wood post) bedded in a concrete base and placed beneath the FLOOR BEAMS. SUPPORT POSTS are steel strapped to FLOOR BEAMS to prevent slipping off during earthquake movement.
SUPPORT POSTS are a fundamental structural component of houses built with a perimeter foundation system and should be in good condition at all times.
Missing SUPPORT POSTS and/or substandard SUPPORT POST alignment are primary causes of FLOOR LEVELING issues.
F O U N D A T I O N I N S P E C T I O N - C O M M O N P R O B L E M S:
A common problem found during foundation inspections is missing or damaged SUPPORT POSTS.
Another common problem found is the use of 2"x4" posts instead of the standard 4"x4".
Often times the concrete base is cracked or deteriorating.
Another common problem found during foundation inspections is SUPPORT POSTS out of alignment and not providing adequate support or completely toppled over and not providing any support. The primary reason for this is that common construction practices of the past only required the top of the 4"x 4" support post to be attached to the FLOOR BEAM with nails.
During seismic activity ground movement can cause SUPPORT POSTS to separate from FLOOR BEAMS. This can cause serious to severe damage to the floor system and interior walls.
R E P A I R / I M P R O V E M E N T S R E C O M M E D E D:
SUPPORT POSTS that cannot be repaired should be replaced.
The common practice of nailing a SUPPORT POST to the FLOOR BEAM is obsolete and the new standard recommends that each SUPPORT POST be connected to the FLOOR BEAM with a steel strap.