Utah Code Title 15A. State Construction and Fire Codes Act § 15A-3-108. Amendments to Chapters 17 through 19 of IBC

“TABLE 1807.1.6.4

EMPIRICAL FOUNDATION WALLS (1,7,8)

Max. Height

2'(610 mm)

None

6”

(5)

2- #4 Bars

2- #4 Bars above

2'(610 mm)

2” for each foot

1- #4 Bar each side

of opening

1- #4 Bar below

width;  min. 6”

3'(914 mm)

None

6”

#4@32”

3- #4 Bars

2- #4 Bars above

2'(610 mm)

2” for each foot

1- #4 Bar each side

of opening

1- #4 Bar below

width;  min. 6”

4'(1,219 mm)

None

6”

#4@32”

4- #4 Bars

2- #4 Bars above

3'(914 mm)

2” for each foot

1- #4 Bar each side

of opening

1- #4 Bar below

width;  min. 6”

6'(1,829 mm)

Floor or roof

8”

#4@24”

5- #4 Bars

2- #4 Bars above

6'(1,829 mm)

2” for each foot

Diaphragm

1- #4 Bar each side

of opening

(6)

1- #4 Bar below

width;  min. 6”

8'(2,438 mm)

Floor or roof

8”

#4@24”

6- #4 Bars

2- #4 Bars above

6'(1,829 mm)

2” for each foot

Diaphragm

1- #4 Bar each side

of opening

(6)

1- #4 Bar below

width;  min. 6”

9'(2,743 mm)

Floor or roof

8”

#4@16”

7- #4 Bars

2- #4 Bars above

6'(1,829 mm)

2” for each foot

Diaphragm

1- #4 Bar each side

of opening

(6)

1- #4 Bar below

width;  min. 6”

Over 9'(2,743 mm), Engineering required for each column

Footnotes:

(1) Based on 3,000 psi (20.6 Mpa) concrete and 60,000 psi (414 Mpa) reinforcing steel.

(2) To be placed in the center of the wall, and extended from the footing to within three inches (76 mm) of the top of the wall;  dowels of #4 bars to match vertical steel placement shall be provided in the footing, extending 24 inches (610 mm) into the foundation wall.

(3) One bar shall be located in the top four inches (102 mm), one bar in the bottom four inches (102 mm) and the other bars equally spaced between.  Such bar placement satisfies the requirements of Section 1805.9.  Corner reinforcing shall be provided so as to lap 24 inches (610 mm).

(4) Bars shall be placed within two inches (51 mm) of the openings and extend 24 inches (610 mm) beyond the edge of the opening;  vertical bars may terminate three inches (76 mm) from the top of the concrete.

(5) Dowels of #4 bar at 32 inches on center shall be provided in the footing, extending 18 inches (457 mm) into the foundation wall.

(6) Diaphragm shall conform to the requirements of Section 2308.

(7) Footing shall be a minimum of nine inches thick by 20 inches wide.

(8) Soil backfill shall be soil classification types GW, GP, SW, or SP, per Table 1610.1.  Soil shall not be submerged or saturated in groundwater.”