HomeMy WebLinkAboutBLDC-6-11-19075 Rebar Requirements.tif P5*4000 Installation Manual
WE'RE BUILDING A BETTER WORLD Engineering Design Tables
TABLE 8- 4600 -7
6t' NOLY5TEEL 1'54600 FLAT WALL FORM ;
BASEMENT WALL W/ OFFSET REBAR (d = 4 -1/2 ")
11"
1
6"
4,000 PSI CONCRETE �
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GRADE 60 VERTICAL REBAR
(SIZE AND SPACING AS 4 1/2" HORIZONTAL REBAR (AS SPECIFIED)
SPECIFIED IN TABLE)
PLAN VIEW
VERTICAL (Grade 60) REDAR REQUIREMENTS
Basement Unbalanced Backfill Equivalent Fluid Density
Wall Height Backfill Depth 30 pcf 45 pcf 60 pcf ON
10 feet 10 ft. #4 @15'; #5 @18'; #6 @18" #4 @10'; #5 @15'; #6 @18" #4@7'; #5 @11'; #6 @16"
12 feet 12 ft. #4 @8'; #5 @13'; #6 @18" #5@9'; #6 @12'; #7 @17" #6 @9'; #7 @12'; #8 @16" '
14 feet j 14 ft. #4@5";#5@8";#6@11" #6@7'; #7 @10'; #8 @13" #6 @5"; #7 @7; #8 @9"
16 feet 16 ft. #5 @5'; #6 @7'; #7 @10" #7 @6'; #8 @8" Special Design Required
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* Minimum Rebar Requirements:
• If the basement wall is NOT supporting an above grade PolySteel wall in Seismic Design Category A, B, C, Dl, and D2 r
areas: Vertical rebar size and spacing per table above. Minimum horizontal rebar is #4 @ 48" o.c. +
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• If the basement wall IS supporting an above grade PolySteel wall in Seismic Design Category A, B, and C areas: Vertical +
rebar size and spacing per table above. Minimum horizontal rebar is #4 @ 48" o.c. r
• If the basement wall IS supporting an above grade PolySteel wall in Seismic Design Category D1 and D2 areas: Maximum
spacing of vertical rebar is 18" o.c. Minimum vertical rebar is #4 @ 12" o.c., #5 @ 18" o.c., or table above if more restrictive. r
Vertical rebar size and spacing shall match the above grade wall reinforcement if more restrictive. Minimum horizontal
rebar is #5 @ 24" o.c. (See note #2 below.) r
NOTES:
1. This table is based on the design criteria of ACI 318 -02 "Building Code Requirements for Structural Concrete" •
2. The reinforcement requirements listed in this table are based on Grade 60 (ASTM A 615 or ASTM A 996) rebar and 4,000 r
psi concrete. Basement walls in Seismic Design Category DI and D2 areas may use the above table for designs to resist
lateral soil pressure but must specify Grade 60 (ASTM A 706 for low -alloy steel) rebar for construction. •+
3. This table requires that the vertical rebar be located 4 -1/2" from the outside face edge of concrete and towards the inside
face of the basement as shown in above sketch. r
4. The basement floor must be poured and the first floor in place before backfilling.
5. •
Th e floor or roof system supporting the top of the basement wall and the connection to the top of the basement wall, must
be specifically designed to provide the necessary strength to resist the horizontal reaction or force developed at the top of
the basement wall by the lateral loads exerted on the wall by the backfill.
6. Concrete must cure a minimum of 7 days before backfilling.
7. Backfill should be well drained.
8. Refer to the PolySteel@ Installation Manual for proper basement drainage and waterproofing systems. r
O American Poly5teel, LLC Version 1.0 r
(800) 977 - 3676 • WWW.polysteel.com 152 June 2005 r