South Carolina Code of Regulations › Chapter 79 - DEPARTMENT OF LABOR, LICENSING AND REGULATION- MANUFACTURED HOUSING BOARD › Appendix A

Current through Register Vol. 48, No. 6, June 28, 2024
Tables
Table 1
Alternate Manufactured Home Foundation Systems (Single or Multi
			 Section Homes)
Alternate Systems
Main Components
Concrete or Concrete Block Load Bearing Perimeter
						  Foundation
1.
Exterior load bearing perimeter foundation on concrete
						  footing.
2.
Wooden structure of home is securely fastened to the
						  load bearing perimeter foundation.
3.
For multi'sectional homes, interior piers, or
						  wall.
Pile/Post Foundation
1.
Wooden, concrete, or steel interior piles or posts with
						  timber or concrete caps.
2.
Perimeter enclosure material of block, brick, permanent
						  wood, or material similar to exterior siding of the home.
Concrete Slab or Continuous Footing Foundations
1.
Concrete slab or continuous interior pier
						  footings.
2.
Perimeter concrete footings.
3.
Frame ties attached to perimeter footings.
4.
Perimeter enclosure material of block, brick, permanent
						  wood, matrial similar to exterior siding of the home.
Piers-Ground Anchors Foundation
1.
Piers composed of formed-in-place concrete, concrete
						  block or steel pedestals on concrete footers or crushed stone.
2.
Steel ground anchors in soil or embedded in concrete
						  deadmen in soil.
3.
Frame times with or without over-the-top ties.
4.
Enclosure material (skirting) to match exterior siding
						  of the home.
Permanent Wood Foundation
1.
Permanent wood blocks or steel interior piers on
						  concrete footers.
2.
Steel ground anchors embedded in soil or embedded in
						  concrete in the soil.
3.
Frame ties with or without over-the-top ties.
4.
Permanent wood perimeter enclosure.
Table 2
Nondesigned Footing Areas for Allowable
Soil Bearing Capacity
Roof Live Load (psf)
South Zone 75 (psf)
Single Section
Multi* Section [FN***]
Width of Units up to
12
14
12
14
and including
(ft.) [FN**]
Tributary Pier
6
8
8
8
Spacing (ft.)
[FN**]
Pier Load (lb.)
2700
3150
3600
4200
[FN**]
Allowable Soil Bearing Capacity
Minimum Required Footing Area (sq. in.)
1000 psf
389
454
518
605
1500 psf
259
302
346
403
2000 psf
194
227
259
302
3000 psf
[FN*]
151
173
202
4000 psf
[FN*]
[FN*]
[FN*]
151
6000 psf
[FN*]
[FN*]
[FN*]
[FN*]
8000 psf
[FN*]
[FN*]
[FN*]
[FN*]
Notes:
(a) Rear cantilever or floor beyond the frame is
						  assumed to be less than 2 feet.
(b) For units wider than the dimensions shown in the
						  above table, an engineering analysis will be needed to determine pier
						  spacing.
(c) Individual supports shall not bear a design load
						  greater than 8,000 lb, 14,000 lb, ultimate.
[FN*] Minimum required footings shall be not less than
						  144 sq. in. (1 sq. ft.).
All values above 144.0 shown.
[FN**] If unit(s) is supplied with overhanging eaves,
						  see manufacturer's installation instructions.
[FN***] See appropriate column for individual section
						  width selected. Multiple section homes may have concentrated roof support which
						  will require special consideration.
Table 3 A
Number of Ties Required Per Side, for Single Section Manufactured
			 Homes.
Zone I
Length of Home
Vertical Ties
Diagonal Ties
Up to 40'
2
3
40' to 46'
2
4
46' to 49'
2
5
49' to 58'
3
5
58' to 84'
3
6
Table 3 B
Number of Ties Required Per Side, for Single Section Manufactured
			 Homes.
Zone II
Length of Home
Vertical Ties
Diagonal Ties
Up to 46'
2
4
46' to 49'
2
5
49' to 58'
3
5
58' to 70'
3
6
70' to 73'
3
7
73' to 84'
4
7
1. Multi section
		  homes only require diagonal ties. Vertical ties not required.
2. Length of home, as used in tables 3 A and
		  3 B, excludes draw bar.
3. An
		  alternate method of tie down may be accepted when designed by a registered
		  architect or engineer based on the criteria set forth in the Federal
		  Manufactured Home Construction and Safety Standards.
4. If vertical tie brackets are not installed
		  by the manufacturer, add number of required vertical ties to diagonal
		  requirements.