Indiana Administrative Code
Title 675 - FIRE PREVENTION AND BUILDING SAFETY COMMISSION
Article 14 - ONE AND TWO FAMILY DWELLING CODE
Rule 4.4 - 2020 Indiana Residential Code
Section 4.4-46 - Table R403.2; size of footings supporting piers and columns
Universal Citation: 675 IN Admin Code 4.4-46
Current through March 20, 2024
Authority: IC 22-13-2-2; IC 22-13-2-2.5; IC 22-13-2-13
Affected: IC 22-12; IC 22-13; IC 22-14; IC 22-15; IC 36-7
Sec. 46.
Add TABLE R403.2 to read as follows:
| TABLE R403.2 | ||||||
| SIZE OF FOOTINGS SUPPORTING PIERS AND COLUMNS | ||||||
| Spacing of Girder "S"1 | Type of Loading2 | Column Size Required3 | Size of Plain Concrete Footing Required3 | |||
| A | B | C | Steel | Wood | ||
| 10' 15' 20' | 5'-6" 4'-0" - | - - - | - - - | 3" Steel Pipe4 | 4" x 4" | 2' x 2' x 8" 5 |
| 10' 15' 20' | 8'-6" 6'-0" 4'-6" | 5'-0" 4'-0" - | - - - | |||
| 10' 15' 20' | 12'-0" 10'-0" 8'-0" | 9'-0" 8'-0" 7'-0" | 8'-0" 7'-0" 6'-0" | 6" x 6" | 4' x 4' x 16" 5 | |
| 10' 15' 20' | 16'-0" 13'-6" 12'-0" | 12'-6" 10'-6" 9'-6" | 11'-0" 10'-0" 8'-0" | 8" x 8" | 4'3" x 4'3" x 17" 5 | |
| 10' 15' 20' | 20'-0" 17'-0" 15'-0" | 16'-0" 13'-6" 12'-0" | 13'-6" 11'-6" 10'-0" | |||
| 1The spacing "S" is the tributary load in the girder. It is found by adding the unsupported spans of the floor joists on each side that are supported by the girder and dividing by 2. | ||||||
| 2Figures under type of loading columns are the allowable girder span. | ||||||
| Type A loading is for a girder supporting 1 floor and a roof. | ||||||
| Type B loading is for a girder supporting 2 floors and a roof. | ||||||
| Type C loading is for a girder supporting 3 floors and a roof. | ||||||
| 3Required size of column is based on girder support from 2 sides. Size of footing is based on allowable soil pressure of 2,000 pounds per square foot. | ||||||
| 4Schedule 40. | ||||||
| 5Footing thickness is based on the use of plain concrete with an ultimate compressive strength of not less than 2,000 pounds per square inch at 28 days. If approved, the footing thickness may be reduced based on an engineered design utilizing higher strength concrete or reinforcement. | ||||||
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