§ 46-100. Standards for foundations and tiedowns.

Every space shall be improved to provide adequate supports for the placement and tiedown of all units. The minimum requirements for foundation footings, supports, piers or blocking and tiedowns shall be as follows:

(1)

Footing or foundation.

a.

When concrete slabs, runners or strips are provided as required in this section, piers or blocking may be placed thereon, provided:

1.

Such strips or runners are a minimum of four inches in thickness and reinforced with not less than 20 gauge wire mesh.

2.

Such slabs, runners, or strips may be a minimum of six-inch compacted gravel with a one-inch minimum asphalt surface. In such event, foundation footings and tiedown anchorage requirements shall apply as provided in this section.

b.

Strips or runners shall be not less than 30 inches wide.

c.

Slabs, strips or runners shall be not less than the length of the unit to be placed thereon.

d.

Eyebolts for tiedown equipment may be set in the concrete slab, strips or runners as required in this section.

e.

When individual or spot footings are used for piers or blocking, such footings shall be a minimum 18-inch by 18-inch by four-inch concrete spaced as follows:

1.

All piers or blocking shall provide a minimum spacing of ten feet, center to center, measured along the frame rail of the unit installed thereon.

2.

All such piers or blocking shall be not less than eight-inch by eight-inch by 16-inch solid or hollow loadbearing concrete or haydite units. Where hollow units are used, all voids shall be placed in a vertical position.

3.

Shims, if required, shall be placed between the beam frame and the pier to provide a level and rigid unit installation.

(2)

Storage under unit. No space beneath any unit shall be used for any storage unless the storage area of such unit is surfaced with concrete or asphalt. In such event, noncombustible skirting shall be installed around the entire perimeter of such unit with adequate access provided for inspections.

(3)

[Minimum tiedowns.] All mobile homes must be provided with anchors and tiedowns to meet the requirements of the Department of Housing and Urban Development.

(4)

Ground anchors. Except as provided in subsection (3)a of this section, all ground anchors shall be as follows:

a.

Types. Anchors shall be bolted in concrete, screw auger or anchor driven or any other type manufactured and approved for such use.

b.

Size. All anchors shall be galvanized high-tensile steel, not less than five-eighths-diameter, with a drop-forged closed eye. All anchors except as required in subsection (3)a of this section, shall be not less than four feet in length, installed to full depth, according to the manufacturer's recommendation, with only the eye protruding above grade for connecting the tiedown system.

c.

Connection to frame. Connections to the unit I-beam frame shall be a five-eighths-inch or larger drop-forged closed eye bolted through a hole drilled through the frame or by any other approved and adequate wrap-around or clamp method.

d.

Turnbuckles, straps or cables. Not less than five-eighths-inch drop-forged turnbuckles with closed eyes and screw pins shall be attached to the frame above and ground anchor below and securely tightened in place. Steel straps or cables may be used in lieu of turnbuckles if they are of equal or greater strength and are securely tightened in place with a tensioning tool and clamped.

(Ord. No. 2001-003, § 4.10, 6-27-2001; Ord. No. 2012-025, § 3, 9-18-2012)