Foundation/site

General Requirements IRC UBC
Permits req'd EXC: fences <6ft., walls<4ft., sheds, painting . .[105.2] {106.2}
Approved plans and permit card on site . . . . . . . . . .[106.3.1] {106.4.2, 108.2}
Are special inspection reports req'd? . . . . . . . .T-b1 [109.2] {106.3.5, 1701.3}
Verify setbacks--min. 3ft. to property line . . . . . . . . . . . .[302.1] {108.1, T-5-A}
Setbacks <3ft. req. 1hr. construction & no openings . . . . . . . . [302.1] {T-5-A}
Inspection and approval prior to covering any work . . . . . . . . [109.1] {108.1}
Pipe trench below footing offset min. 45° . . . . . . . F-b3 [2603.7] {UPC 313.3}
Temporary power (see p.25) . . . . . . . . . . . . . . . . . . . . . . . . . . . .[107.3] {305-4}

Slope/Grade
Surface graded away from foundation min. 6in./10ft. {6ft.} .[401.3] {1829.2}
Setbacks & clearances to slopes =>1 vert: 3 horiz . .F-b1 [403.1.7] {1806.5.2}
Lot slope >1:10--foundation stepped or level . . .[403.1.5] {1806.4}
Graded site--top of foundation min. 12in.+2%
above street drain . . . . . . . . . . . . . . . . . . . .[403.1.7.3] {1806.5.5}

Forms
Size per Table b1 . . . . . . . . . . . . . . . . . . . . . . . .[403.1] {T18-1-C}
Pipe penetrations must be sleeved . . . . . . . . . . .[2603.5] {UPC 313.10.1}
Excavation free of debris and roots . . . . . .[408.4, 506.2] {3302}
Beam connections 2in. air space on 3 sides . . . .[323.1] {2306.6}

Rebar
12in. min. splice lap or per design . . . . . . . . . . . . .[local] {1912.6.1}
SDC D1&D2 {Zones 3&4}: Stem wall req's.#4 bar in top & bottom of footing/wall . .......................................... . . [403.1.3. 1,2] {1806.7.1}
SDC D1&D2: Min. #4 vertical bar 4ft. on center [403.1.3] {n/a}
Clearance to forms per Table b2 . . . . . . . . . . . .[403.1.3] {1907.7.1}
[SDC D1&D2] Min. 3in. clearance to soil (dobies not bricks)
................................. . . . . . . . . . . . . . . . . . .F-b2 [403.1.3] {1907.7.1

Plates & Sills
Bottom of sill 8in. {6in.} to earth . . . . . . . . . . . . .[323.1] {1806.1}
Sill material treated or naturally decay-resistant . . [323.1] {2306.4}

Anchor Bolts
2in. bolts min. {d SZ4} 7in. embedment
max. 6ft. spacing . . . . . . . . . . . . . . . . . . . . . .[403.1.6] {1806.6}
Within 12in. of end of sill . . . . . . . . . . . . . F-b4 [403.1.6] {1806.6}
SDC D1&D2 {Zones 3&4}: plate washers, bolts [403.1.6.1] {1806.6.1}
4ft. o.c. for 2 story . . . . . . . . . . . . . . . . . . . .[403.1.6.1] {local}

Hold-downs
Hold-down embedment per design specs . . . . . . . .[manu.] {manu.}
Bolts installed to manufacturer's specs . . . . . . . .[manu.] {manu.}
All load transfers floor to floor to design specs . . .[601.2] {1629}

Concrete Masonry Units (CMUs)

General Requirements
6in. block OK for one story to 9ft. . . . . . . . . . . .[606.2.1] {2109.6.1}
8in. block if more than one story or >9ft. . . . . . .[606.2.1] {2109.6.1}
Beam connections--2in. airspace on three sides [323.1] {2306.6}
Roof & floor structures to be anchored
to masonry walls . . . . . . . . . . . . . . . . . . . .F-b5 [606.10] {2309}

Grout
All cells with reinforcement must be filled . . . . . .[609.4.1] {2104.6.1}
Cleanouts req'd at bottom of each
grouted cell for pours >4ft. {5ft.} . . . . . . . . . .[609.1.5.2] (2104.6.1}
Grout continuous pour max. lift 5ft. . . . . . . . . . .[609.1.4] {2104.6.1}
Clean grout space--max. 2in. projections . . . . .[609.1.3] {2104.6.1}

Reinforcing
SDC D1&D2: min. #3 vertical bars 4ft. o.c. . . . .[404.1.4] {2106.1.12.4}
Vertical Rebar <=6% of grout space . . . . . . . . . .[T609.1.2] {2107.2.2.1}
Lap Rebar splices 40x bar dia. . . . . . . . . . . .[F606.10(2)] {2107.2.2.6}
Support/positioners min. 200 bar dia. (8ft. #4 bar) [609.4.1] {2104.5}
Cover--min. win.; 2in. to weather or soil . . . . . . [606.12] {2107.2.2.2}

Retaining Walls

Walls supporting >4ft. of backfill req. design . . .[404.1.3] {106.2}
Surcharge within >45° must be engineered [105.2,404.1.3] {1804.6}
Enclosing habitable space--req's. moisture barrier [406.1] {1833.1}

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Books based on 2006 IRC, UMC, & UPC; 2005 & 2008 NEC; 2007 CBC, CPC, CMC & CEC with references to changes from prior editions. Books are published by The Taunton Press Inc.
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