Chance Technical Design Manual
CRAWL SPACE WALL
SEE TABLE FOR TOP & BOTTOM REINFORCING (SPLICE TOP AT MID-SPAN OF PILES; SPLICE BOTTOM OVER PILE)
SUPPORT TOP OF WALL WITH ADEQUATE ANCHOR BOLTS AND FRAMING
#4 @ 20” EACH FACE AS REQ.
BACKFILL
5’ MAX CRAWL SPACE
10” MIN
SEE TABLE FOR STIRRUPS (VERT. REINFORCEMENT)
FROST DEPTH +6” (MIN)
PERIMETER DRAIN
16” MIN
10”
4” VOID FORM UNDER FOOTING (EXPANSIVE SOILS ONLY)
CHANCE® HELICAL PILE
CRAWL SPACE WALL REINFORCING STEEL CONFIGURATION (SEE TABLE 4-10) FIGURE 4-11
18”
LOAD DETERMINATION
CRAWL SPACE WALL REINFORCING STEEL CONFIGURATION, TABLE 4-10
TOTAL FOUNDATION LINE LOAD
3,000 (lb/ft)
4,000 (lb/ft)
5,000 (lb/ft)
6,000 (lb/ft)
7,000 (lb/ft)
PILE SPACING
WALL HEIGHT
STEEL REINFORCING BARS REQUIRED
TOP & BOTTOM
STIRRUP (O.C.)
TOP & BOTTOM
STIRRUP (O.C.)
TOP & BOTTOM
STIRRUP (O.C.)
TOP & BOTTOM
STIRRUP (O.C.)
TOP & BOTTOM
STIRRUP (O.C.)
3’ 4’ 5’ 3’ 4’ 5’ 3’ 4’ 5’ 3’ 4’ 5’
2 - #5 2 - #4 2 - #4 2 - #6 2 - #5 2 - #5 2 - #7 2 - #6 2 - #6 2 - #8 2 - #8 2 - #7
2 - #6 2 - #5 2 - #4 2 - #7 2 - #6 2 - #5 2 - #7 2 - #7 2 - #7 4 - #6 2 - #8 2 - #8
2 - #6 2 - #6 2 - #5 2 - #7 2 - #7 2 - #6 2 - #8 2 - #8 2 - #7 4 - #7 4 - #6 4 - #7
2 - #7 2 - #6 2 - #5 2 - #8 2 - #8 2 - #7 4 - #6 4 - #6 2 - #8
2 - #7 2 - #7 2 - #6 2 - #8 2 - #8 2 - #7 4 - #7 2 - #8 4 - #6
8’
#3 @ 15”
#3 @ 15”
#3 @ 15”
#3 @ 15”
#3 @ 15”
10’
#3 @ 15”
#3 @ 15”
#3 @ 15”
#3 @ 15”
#3 @ 15”
12’
#3 @ 15”
#3 @ 15”
#3 @ 15”
#3 @ 15”
#3 @ 15”
4 - #8 #3 @ 11” 5 - #8 #3 @ 9”
15’
#3 @ 15”
#3 @ 15”
#3 @ 15”
4 - #7 4 - #7
4 - #8 4 - #7
#3 @ 15”
#3 @ 15”
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