For SI: 1 foot = 304.8 mm.

**FIGURE R608.6(1) ABOVE-GRADE CONCRETE WALL CONSTRUCTION ONE STORY**

For SI: 1 foot = 304.8 mm.

**FIGURE R608.6(2) ABOVE-GRADE CONCRETE WALL CONSTRUCTION CONCRETE FIRST STORY AND LIGHT-FRAMED SECOND STORY**

For SI: 1 foot = 304.8 mm.

**FIGURE R608.6(3) ABOVE-GRADE CONCRETE WALL CONSTRUCTION TWO-STORY**

For SI: 1 inch = 25.4 mm.

**FIGURE R608.6(4) ABOVE-GRADE CONCRETE WALL SUPPORTED ON MONOLITHIC SLAB-ON-GROUND FOOTING**

**TABLE R608.6(1) MINIMUM VERTICAL REINFORCEMENT FOR FLAT ABOVE-GRADE WALLS**

^{a, b, c, d, e} MAXIMUM WIND SPEED (mph) | MAXIMUM UNSUPPORTED WALL HEIGHT PER STORY (feet) | MINIMUM VERTICAL REINFORCEMENT-BAR SIZE AND SPACING (inches)^{f, g} | |||||||||

Nominal^{h} wall thickness (inches) | |||||||||||

Exposure Category | 4 | 6 | 8 | 10 | |||||||

B | C | D | Top^{i} | Side^{i} | Top^{i} | Side^{i} | Top^{i} | Side^{i} | Top^{i} | Side^{i} | |

115 | 8 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | ||

9 | 4@48 | 4@39 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | |||

10 | 4@41 | 4@34 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | |||

120 | 8 | 4@48 | 4@43 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | ||

9 | 4@48 | 4@36 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | |||

10 | 4@37 | 4@34 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | |||

130 | 110 | 8 | 4@48 | 4@38 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | |

9 | 4@39 | 4@34 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | |||

10 | 4@34 | 4@34 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | |||

140 | 119 | 110 | 8 | 4@43 | 4@34 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 |

9 | 4@34 | 4@34 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | |||

10 | 4@34 | 4@31 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | |||

150 | 127 | 117 | 8 | 4@37 | 4@34 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 |

9 | 4@34 | 4@33 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | |||

10 | 4@31 | 4@27 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | |||

160 | 136 | 125 | 8 | 4@34 | 4@34 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 |

9 | 4@34 | 4@29 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | |||

10 | 4@27 | 4@24 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 | 4@48 |

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mile per hour = 0.447 m/s, 1 pound per square inch = 1.895 kPa, 1 square foot = 0.0929 m^{2}. |

a. Table is based on ASCE 7 components and cladding wind pressures for an enclosed building using a mean roof height of 35 feet, interior wall area 4, an effective wind area of 10 square feet, topographic factor, K, equal to 1.0, and Risk Category II._{zt} |

b. Table is based on concrete with a minimum specified compressive strength of 2,500 psi. |

c. See Section R608.6.5 for location of reinforcement in wall. |

d. Deflection criterion is L/240, where L is the unsupported height of the wall in inches. |

e. Interpolation is not permitted. |

f. Where No. 4 reinforcing bars at a spacing of 48 inches are specified in the table as indicated by shaded cells, use of bars with a minimum yield strength of 40,000 psi or 60,000 psi is permitted. |

g. Other than for No. 4 bars spaced at 48 inches on center, table values are based on reinforcing bars with a minimum yield strength of 60,000 psi. Vertical reinforcement with a yield strength of less than 60,000 psi or bars of a different size than specified in the table are permitted in accordance with Section R608.5.4.7 and Table R608.5.4(2). |

h. See Table R608.3 for tolerances on nominal thicknesses. |

i. "Top" means gravity load from roof or floor construction bears on top of wall. "Side" means gravity load from floor construction is transferred to wall from a wood ledger or cold-formed steel track bolted to side of wall. For nonload-bearing walls where floor framing members span parallel to the wall, use of the "Top" bearing condition is permitted. |

**TABLE R608.6(2) MINIMUM VERTICAL REINFORCEMENT FOR WAFFLE-GRID ABOVE-GRADE WALLS**

^{a, b, c, d, e} MAXIMUM WIND SPEED (mph) | MAXIMUM UNSUPPORTED WALL HEIGHT PER STORY (feet) | MINIMUM VERTICAL REINFORCEMENT-BAR SIZE AND SPACING (inches)^{f, g} | |||||

Nominal^{h} wall thickness (inches) | |||||||

Exposure Category | 6 | 8 | |||||

B | C | D | Top^{i} | Side^{i} | Top^{i} | Side^{i} | |

115 | 8 | 4@48 | 4@48 | 4@48 | 4@48 | ||

9 | 4@48 | 5@43 | 4@48 | 4@48 | |||

10 | 5@47 | 5@37 | 4@48 | 4@48 | |||

120 | 8 | 4@48 | 5@48 | 4@48 | 4@48 | ||

9 | 4@48 | 5@40 | 4@48 | 4@48 | |||

10 | 5@43 | 5@37 | 4@48 | 4@48 | |||

130 | 110 | 8 | 4@48 | 5@42 | 4@48 | 4@48 | |

9 | 5@45 | 5@37 | 4@48 | 4@48 | |||

10 | 5@37 | 5@37 | 4@48 | 4@48 | |||

140 | 119 | 110 | 8 | 4@48 | 5@38 | 4@48 | 4@48 |

9 | 5@39 | 5@37 | 4@48 | 4@48 | |||

10 | 5@37 | 5@35 | 4@48 | 4@48 | |||

150 | 127 | 117 | 8 | 5@43 | 5@37 | 4@48 | 4@48 |

9 | 5@37 | 5@37 | 4@48 | 4@48 | |||

10 | 5@36 | 6@44 | 4@48 | 4@48 | |||

160 | 136 | 125 | 8 | 5@38 | 5@37 | 4@48 | 4@48 |

9 | 5@37 | 6@47 | 4@48 | 4@48 | |||

10 | 6@45 | 6@39 | 4@48 | 6@46 |

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mile per hour = 0.447 m/s, 1 pound per square inch = 6.895 kPa, 1 square foot = 0.0929 m^{2}. |

a. Table is based on ASCE 7 components and cladding wind pressures for an enclosed building using a mean roof height of 35 feet, interior wall area 4, an effective wind area of 10 square feet, topographic factor, K, equal to 1.0, and Risk Category II._{zt} |

b. Table is based on concrete with a minimum specified compressive strength of 2,500 psi. |

c. See Section R608.6.5 for location of reinforcement in wall. |

d. Deflection criterion is L/240, where L is the unsupported height of the wall in inches. |

e. Interpolation is not permitted. |

f. Where No. 4 reinforcing bars at a spacing of 48 inches are specified in the table as indicated by shaded cells, use of bars with a minimum yield strength of 40,000 psi or 60,000 psi is permitted. |

g. Other than for No. 4 bars spaced at 48 inches on center, table values are based on reinforcing bars with a minimum yield strength of 60,000 psi. Maximum spacings shown are the values calculated for the specified bar size. Where the bar used is Grade 60 and the size specified in the table, the actual spacing in the wall shall not exceed a whole-number multiple of 12 inches such as, 12, 24, 36 and 48, that is less than or equal to the tabulated spacing. Vertical reinforcement with a yield strength of less than 60,000 psi or bars of a different size than specified in the table are permitted in accordance with Section R608.5.4.7 and Table R608.5.4(2). |

h. See Table R608.3 for minimum core dimensions and maximum spacing of horizontal and vertical cores. |

i. "Top" means gravity load from roof or floor construction bears on top of wall. "Side" means gravity load from floor construction is transferred to wall from a wood ledger or cold-formed steel track bolted to side of wall. For nonload-bearing walls and where floor framing members span parallel to the wall, the "top" bearing condition is permitted to be used. |

**TABLE R608.6(3) MINIMUM VERTICAL REINFORCEMENT FOR 6-INCH SCREEN-GRID ABOVE-GRADE WALLS**

^{a, b, c, d, e} MAXIMUM WIND SPEED (mph) | MAXIMUM UNSUPPORTED WALL HEIGHT PER STORY (feet) | MINIMUM VERTICAL REINFORCEMENT-BAR SIZE AND SPACING (inches)^{f, g} | |||

Nominal^{h} wall thickness (inches) | |||||

Exposure Category | 6 | ||||

B | C | D | Top^{i} | Side^{i} | |

115 | 8 | 4@48 | 4@48 | ||

9 | 4@48 | 5@41 | |||

10 | 4@48 | 6@48 | |||

120 | 8 | 4@48 | 4@48 | ||

9 | 4@48 | 5@38 | |||

10 | 5@42 | 6@48 | |||

130 | 110 | 8 | 4@48 | 5@41 | |

9 | 5@44 | 6@48 | |||

10 | 5@35 | 6@48 | |||

140 | 119 | 110 | 8 | 4@48 | 5@36 |

9 | 5@38 | 6@48 | |||

10 | 6@48 | 6@48 | |||

150 | 127 | 117 | 8 | 5@42 | 6@48 |

9 | 6@48 | 6@48 | |||

10 | 6@48 | 6@42 | |||

160 | 136 | 125 | 8 | 5@37 | 6@48 |

9 | 6@48 | 6@45 | |||

10 | 6@44 | 6@38 |

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mile per hour = 0.447 m/s, 1 pound per square inch = 6.895 kPa, 1 square foot = 0.0929 m^{2}. |

a. Table is based on ASCE 7 components and cladding wind pressures for an enclosed building using a mean roof height of 35 feet, interior wall area 4, an effective wind area of 10 square feet, topographic factor, K, equal to 1.0, and Risk Category II._{zt} |

b. Table is based on concrete with a minimum specified compressive strength of 2,500 psi. |

c. See Section R608.6.5 for location of reinforcement in wall. |

d. Deflection criterion is L/240, where L is the unsupported height of the wall in inches. |

e. Interpolation is not permitted. |

f. Where No. 4 reinforcing bars at a spacing of 48 inches are specified in the table as indicated by shaded cells, use of bars with a minimum yield strength of 40,000 psi or 60,000 psi is permitted. |

g. Other than for No. 4 bars spaced at 48 inches on center, table values are based on reinforcing bars with a minimum yield strength of 60,000 psi. Maximum spacings shown are the values calculated for the specified bar size. Where the bar used is Grade 60 and the size specified in the table, the actual spacing in the wall shall not exceed a whole-number multiple of 12 inches such as, 12, 24, 36 and 48, that is less than or equal to the tabulated spacing. Vertical reinforcement with a yield strength of less than 60,000 psi or bars of a different size than specified in the table are permitted in accordance with Section R608.5.4.7 and Table R608.5.4(2). |

h. See Table R608.3 for minimum core dimensions and maximum spacing of horizontal and vertical cores. |

i. "Top" means gravity load from roof or floor construction bears on top of wall. "Side" means gravity load from floor construction is transferred to wall from a wood ledger or cold-formed steel track bolted to side of wall. For nonload-bearing wall and where floor framing members span parallel to the wall, use of the "Top" bearing condition is permitted. |

**TABLE R608.6(4) MINIMUM VERTICAL REINFORCEMENT FOR FLAT, WAFFLE- AND SCREEN-GRID ABOVE-GRADE WALLS DESIGNED CONTINUOUS WITH FOUNDATION STEM WALLS**

^{a, b, c, d, e, k, l} MAXIMUM WIND SPEED (mph) | HEIGHT OF STEM WALL ^{h,i}(feet) | MAXIMUM DESIGN LATERAL SOIL LOAD (psf/ft) | MAXIMUMUNSUPPORTED HEIGHT OF ABOVE- GRADE WALL (feet) | MINIMUM VERTICAL REINFORCEMENT-BAR SIZE AND SPACING (inches)^{f, g} | ||||||||

Wall type and nominal thickness^{j} (inches) | ||||||||||||

Exposure Category | Flat | Waffle | Screen | |||||||||

B | C | D | 4 | 6 | 8 | 10 | 6 | 8 | 6 | |||

115 | 3 | 30 | 8 | 4@30 | 4@48 | 4@48 | 4@48 | 4@22 | 4@26 | 4@21 | ||

10 | 4@23 | 5@43 | 4@48 | 4@48 | 4@17 | 4@20 | 4@16 | |||||

60 | 10 | 4@19 | 5@37 | 4@48 | 4@48 | 4@14 | 4@17 | 4@14 | ||||

6 | 30 | 10 | DR | 5@21 | 6@35 | 4@48 | DR | 4@10 | DR | |||

60 | 10 | DR | 5@12 | 6@25 | 6@28 | DR | DR | DR | ||||

120 | 3 | 30 | 8 | 4@28 | 4@48 | 4@48 | 4@48 | 4@21 | 4@48 | 4@20 | ||

10 | 4@22 | 5@41 | 4@48 | 4@48 | 4@16 | 4@19 | 4@15 | |||||

60 | 10 | 4@18 | 5@35 | 4@48 | 4@48 | 4@14 | 4@17 | 4@13 | ||||

6 | 30 | 10 | DR | 5@21 | 6@35 | 4@48 | DR | 4@10 | DR | |||

60 | 10 | DR | 5@12 | 6@25 | 6@28 | DR | DR | DR | ||||

130 | 110 | 3 | 30 | 8 | 4@25 | 4@48 | 4@48 | 4@48 | 4@18 | 4@22 | 4@18 | |

10 | 4@19 | 5@36 | 4@48 | 4@48 | 4@14 | 4@17 | 4@13 | |||||

6 | 60 | 10 | 4@16 | 5@34 | 4@48 | 4@48 | 4@12 | 4@17 | 4@12 | |||

30 | 10 | DR | 5@19 | 6@35 | 4@48 | DR | 4@9 | DR | ||||

60 | 10 | DR | 5@12 | 6@24 | 6@28 | DR | DR | DR | ||||

140 | 119 | 110 | 3 | 30 | 8 | 4@22 | 5@42 | 4@48 | 4@48 | 4@16 | 4@20 | 4@16 |

10 | 4@17 | 5@34 | 4@48 | 4@48 | 4@21 | 4@17 | 4@12 | |||||

60 | 10 | 4@15 | 5@34 | 4@48 | 4@48 | 4@11 | 4@17 | 4@10 | ||||

6 | 30 | 10 | DR | 5@18 | 6@35 | 6@35 | DR | 4@48 | DR | |||

60 | 10 | DR | 5@11 | 6@23 | 6@28 | DR | DR | DR | ||||

150 | 127 | 117 | 3 | 30 | 8 | 4@20 | 5@37 | 4@48 | 4@48 | 4@15 | 4@18 | 4@14 |

10 | 4@15 | 5@34 | 4@48 | 4@48 | 4@11 | 4@17 | 4@11 | |||||

60 | 10 | 4@13 | 5@34 | 4@48 | 4@48 | 4@10 | 4@16 | 4@9 | ||||

6 | 30 | 10 | DR | 5@17 | 6@33 | 6@32 | DR | 4@8 | DR | |||

60 | 10 | DR | DR | 6@22 | 6@28 | DR | DR | DR | ||||

160 | 136 | 125 | 3 | 30 | 8 | 4@18 | 5@34 | 4@48 | 4@48 | 4@13 | 4@17 | 4@13 |

10 | 4@13 | 5@34 | 4@48 | 4@48 | 4@10 | 4@16 | 4@9 | |||||

60 | 10 | 4@11 | 5@31 | 6@45 | 4@48 | 4@9 | 4@14 | 4@8 | ||||

6 | 30 | 10 | DR | 5@15 | 6@31 | 6@30 | DR | 4@7 | DR | |||

60 | 10 | DR | DR | 6@21 | 6@27 | DR | DR | DR |

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mile per hour = 0.447 m/s, 1 pound per square inch = 6.895 kPa, 1 square foot = 0.0929 m^{2}. |

a. Table is based on ASCE 7 components and cladding wind pressures for an enclosed building using a mean roof height of 35 feet, interior wall area 4, an effective wind area of 10 square feet, topographic factor, Kzt, equal to 1.0, and Risk Category II. |

b. Table is based on concrete with a minimum specified compressive strength of 2,500 psi. |

c. See Section R608.6.5 for location of reinforcement in wall. |

d. Deflection criterion is L/240, where L is the height of the wall in inches from the exterior finish ground level to the top of the above-grade wall. |

e. Interpolation is not permitted. For intermediate values of basic wind speed, heights of stem wall and above-grade wall, and design lateral soil load, use next higher value. |

g. Other than for No. 4 bars spaced at 48 inches on center, table values are based on reinforcing bars with a minimum yield strength of 60,000 psi. Maximum spacings shown are the values calculated for the specified bar size. In waffle and screen-grid walls where the bar used is Grade 60 and the size specified in the table, the actual spacing in the wall shall not exceed a whole-number multiple of 12 inches such as, 12, 24, 36 and 48, that is less than or equal to the tabulated spacing. Vertical reinforcement with a yield strength of less than 60,000 psi and/or bars of a different size than specified in the table are permitted in accordance with Section R608.5.4.7 and Table R608.5.4(2). |

h. Height of stem wall is the distance from the exterior finish ground level to the top of the slab-on-ground. |

i. Where the distance from the exterior finish ground level to the top of the slab-on-ground is equal to or greater than 4 feet, the stem wall shall be laterally supported at the top and bottom before backfilling. Where the wall is designed and constructed to be continuous with the above-grade wall, temporary supports bracing the top of the stem wall shall remain in place until the above-grade wall is laterally supported at the top by floor or roof construction. |

j. See Table R608.3 for tolerances on nominal thicknesses, and minimum core dimensions and maximum spacing of horizontal and vertical cores for waffle- and screen-grid walls. |

k. Tabulated values are applicable to construction where gravity loads bear on top of wall, and conditions where gravity loads from floor construction are transferred to wall from a wood ledger or cold-formed steel track bolted to side of wall. See Tables R608.6(1), R608.6(2) and R608.6(3). |

l. DR = Design Required. |