Idaho Manufactured Housing Installer

Accessory buildings include ramadas, storage sheds, and garages, while accessory structures include awnings, carports, decks, steps, and ramps.

Construction is work performed inside the home after it leaves the factory (affecting arrangements/methods of construction, fire and life safety, and electrical, plumbing and mechanical systems), while siting is work performed outside the home to place it on its site, expressly including support and tie-down systems, utility connections, skirting, and steps.

The utilities inspection covers plumbing connections, fuel gas piping, electrical service, air conditioning, after-market electrical or plumbing equipment, and mechanical equipment, while duct crossovers, flue/chimney/vents, and dryer exhaust ducted through skirting or foundation fall under the installation inspection.

On a standard set, footings and pier stands under the main frame are placed not more than 12 inches from the ends of the frames, while on a permanent foundation set they are placed not more than 30 inches from the ends; both then continue at 6 feet on center.

The minimum poured-in-place individual pad is 4 inches for standard set installations and nominal 8 inches or thicker for permanent foundation installations.

The entire marriage line of a permanent foundation set home is supported by minimum 256 square inch poured-in-place footings and piers, while ridge beam support columns on a home converted from standard set to permanent foundation require footings of at least 512 square inches.

Single stack block piers are used for loads not to exceed 5,000 pounds and double stack block piers for loads not to exceed 16,000 pounds; double and single piers may be combined for higher loads.

Block piers may be single stacked up to 36 inches high under the main frame or marriage line but up to 48 inches high under the perimeter walls; above those heights piers must be double stacked with interlocking blocks.

Anchors, straps and tension devices must resist an allowable working load equal to or exceeding 3,150 pounds and must withstand a 50% overload of 4,725 pounds without failure of the equipment or attachment point.

A 1/2" x 10" anchor bolt attaches the 2x4 sill plate to a poured concrete stem wall, while a 1/2" x 7" bolt secures the bottom plate of a pressure treated wood stem wall to its footing.

A Foundation Set is installed on footings and piers with the perimeter enclosed by a supporting permanent foundation footing and stem wall extending below the frost line, while a Standard Set is on footings and piers with the perimeter enclosed by above-ground skirting or fascia.

Stabilizing devices covers ALL components of both the anchoring and support systems (piers, footings, foundations, ties, anchoring equipment, ground anchors), whereas support system covers only foundations, footings, piers, caps and shims, foundation system means a perimeter footing and stem wall support, and a load bearing device is an individual support component.

A Tag is a label or insignia issued by the Division and applied to manufactured homes to indicate compliance with federal or state laws, rules and regulations, while Labeled refers to the identifying mark of a nationally recognized testing laboratory or inspection agency on equipment and materials.

A ramada is a stationary structure with a roof extending over the manufactured home (and possibly a patio or parking space) used principally for protection from snow, sun or rain, while a carport or awning is a roof with its supports and not more than one wall.

Permits are required before installing a home on a building site or in a park, including display homes in parks, subdivisions and residential lots and homes occupied on a sales lot, but are NOT required for unoccupied manufactured homes temporarily displayed on a sales lot or in storage.