Building permit shall be issued prior to placing any manufactured or mobile home on private or rental properties. To obtain permit you must submit the following information and documentation to the "Department of Building Safety" located in the "Duchesne County Administrative Offices" at 734 North Center in Duchesne.

Any home placed on private lots in Duchesne County shall be placed on a permanent foundation system in accordance to Title 17-27 and 58-56 of the Utah Code and defined by R156-56 of the Utah Administrative Code and Duchesne County Ordinance 97-125 chapter 8 as follows;

Utah Code section 17-27-105.5 Manufactured Homes.
(1) For the purposes of this section, a manufactured home is the same as defined in Section 58-56-3, except that the manufactured home must be attached to a permanent foundation in accordance with plans providing for vertical loads, uplift, and lateral forces and frost protection in compliance with applicable building code. All appendages including carports, garages, storage buildings, additions, or alterations must be built in compliance with the applicable building code.

Definitions from R156-56 Utah Administrative Code;

"Permanent foundation" means the main foundation system for the manufactured home including approved steel, wood or concrete block.

"Construction of a permanent foundation" means a foundation system constructed entirely of placed concrete and is installed around the exterior of the manufactured or mobile home which when completed will be the only source of support and attachment of the home to the ground.

Duchesne County Ordinance 97-125 Chapter 8 section 1-8-5 Manufactured Home and Travel-Trailers Prohibited Exceptions.

It shall be unlawful to place any travel-trailer on any lot or parcel of land in Duchesne County and to use the same as permanent human habitation, except when located in a travel-trailer court.

It shall be unlawful to place a mobile/manufactured home on any lot or parcel of land in Duchesne County, except in compliance with the following.

1. When temporarily located on a lot for which a building permit has been issued, and a building is being constructed, and is connected to approved water and sewer facilities, but not to exceed one (1) year or.
2. When placed on a lot that complies with all of the regulations of the zone in which the manufactured home is located provided:
   
   (a) Residential dwellings are a permitted use in the zone, and the manufactured home is connected to an approved water supply and domestic waste water disposal system.
   
   (b) The manufactured home is placed on a permanent foundation and is skirted with brick, or masonry construction. ,
   
   (c) The running gear and hitch shall be removed.
   
   (d) The manufactured home is entered on the tax rolls of Duchesne County as real property, as evidenced by a letter or other proof from the County Assessor.
   
   (e) The roof shall be pitched to have a slope of 2:12 or steeper to meet the snow load requirements for the given area.
   
   (f) Exterior siding material shall be nonreflective and be similar to conventional house-type siding material.
   
   (g) Must be classified as either a Class A, B, or C manufactured home.
   

Class D manufactured housing units will not be allowed in Duchesne County.

1. Class A: New manufactured homes certified as meeting the National Mobile Home Construction and Safety Standards Act of 1974 (effective June 15, 1976) of the Department of Housing and Urban Development.
2. Class B: An unaltered, undamaged, used manufactured home certified as meeting the federal standards specified above and continuing to be in excellent condition and safe and fit for residential occupancy.
3. Class C: An unaltered, undamaged, used manufactured home, whether or not certified as meeting federal prior codes, in good to fair condition and safe and fit for residential occupancy.
4. Class D: Manufactured homes new or used which have been damaged as a result of neglect, fire, weather, or road transporting, or altered or modified as a result of the above or at the choice of owners. Units which contain aluminum branch circuit and units which were not manufactured to meet previous minimum codes and as a result thereof are now determined to be unsafe, unsanitary or hazardous for occupancy.

Housing manufactured after June 15,1976 to present must bear a HUD housing compliance tag and the manufactures data plate. Housing manufactured after July 1970, through June 15, 1976 must bear a HUD housing tag and the manufactures data plate or the Utah state seal and meet the adopted standards of the state (UAC Title 41 Chapter 20). Housing manufactured prior to July 1970 or that do not bear the appropriate seals, will be subject to an inspection by a qualified inspector to determine compliance with the applicable safety standards. These homes will also be required to have a roof structure capable of protecting the home from any and all imposed loads (snow) for the area in which they will be located. Due to the adoption of the model energy code, these homes may also be required to be up graded to comply.

2:    Site Preparation

Any and all decayable organic material shall be removed from the area in with the home is to occupy (Required by ANSI A225.1 section 3.3, the UBC and all Manufactures Installation Manuals). Section 3302 of the UBC requires that all stumps and roots be removed from the soil to a depth of at least 12" below the surface of the ground in the area to be occupied by the building.(this includes grass and brush roots) If the removal of such material creates a depression or pit effect than;

• option 1: structural fill compacted in 8" lifts to 90% minimum compaction to create a 2% minimum slope from the center of the home to a distance of 10'-0" minimum away from perimeter of home or
• option 2: a foundation retaining wall backfilled and graded to create a minimum 2% (1/4inch per foot) slope away from home to a distance of 10'-0" minimum will be required.

3:    Foundations

As permanent foundations are required by the State of Utah and Duchesne County, there design and construction are to be in accordance with the Uniform Building Code as adopted and amended by the State of Utah and Duchesne County. These foundations may be required to be designed by a Utah licensed engineer. Most of the home manufactures have designs available, however they must be approved by the local building authority having jurisdiction.

Footings;
Footings shall be placed on undisturbed soil (Manufactures Installation Manuals and ANSI A225.1 section 4.2 requires a minimum of 4" below grade. UBC Table 18-I-D requires footings to be placed 12" below undisturbed ground surface). Footings that will be subject to frost conditions shall be protected (most of Duchesne County require a minimum 30" footing depth from finished grade for frost protection).

Spot footings spaced along the main beam frame members and mating lines of multi section homes shall be sized in accordance with the manufactures installation manual for new homes or the ANSI A225.1 standard for homes with no manual. Soil bearing capacity shall be determined and confirmed with the building official or assumed 1000 PSF for the design size of pads.

Strip footing size shall be a minimum of 9" thick and 16" wide cast in place with two horizontal reinforcement bar ½" minimum size. These bars are to be located a minimum of 3" above or from the earth (section 1907.7.1 UBC) with a minimum of 6" of concrete above the bar (section 1915.7 UBC).

Foundation perimeter wall;
Homes that require perimeter support will be required to have the perimeter wall protected from frost heave and designed to support any and all imposed loads, vertical or horizontal. Reinforcement shall be placed in wall in accordance with the Utah State amendment to the UBC. Wall shall be a minimum 6" thick (check local building authority) with ½" minimum size reinforcement vertical at 2'-0" on center grade 60 and horizontal at 2'-0" on center grade 60 or 40 (Utah State amendment). Top horizontal bar is to be with in 6" of the top of wall. Overlaps of reinforcement shall be a minimum of 12"(section 1912.15.1 UBC) and off set a minimum of 24" (section 1912.15.4.1 UBC).
Note: Generally the homes that require perimeter support are those with 40# or greater roof live load design or those that have Sheetrock tape and textured walls.

Under floor clearance, access and ventilation;
Foundation shall be designed to provide a minimum of 12" clearance between the ground and frame members and 18" clearance to floor joist. A clear unobstructed access of 24" high x 32" wide minimum size shall be provided. Ventilation in the amount of 1 square foot of net free area for every 150 square foot of under floor space shall be provided. Vents shall be located with in 3'-0" of the end and than evenly spaced along the long dimension of the home. Do not locate access opening or vents at the mating line of multiple section homes as support blocking may be required at this point.

A 6 mil minimum plastic moisture membrane is required to be placed on the ground beneath the home. This will allow a reduction in ventilation area to 10% of that required for the home. This membrane must cover the entire surface area. A 12" minimum lap is required at the seams.
NOTE: Under floor ventilation must provide adequate free air supply for combustion air for any and all gas fired appliances that use this space for combustion air supply.

Wind anchors;
Wind anchors shall be installed in accordance with the manufacture or ANSI A225.1 standard. Concrete style anchors require a minimum 31.5 cubic feet (1.17 cubic yards) of concrete per anchor in order to comply with the MCHSS anchoring requirements. When using auger or other type of anchor, you must supply the listing information to the building inspector to confirm compliance with the applicable standards.

4:    Home Set

Plumbing;
Home shall be supplied with a minimum 3" "building sewer" line of an approved piping to extend to a point 2'-0" from the house foundation. This line shall be graded at 1/4" per foot.

The home shall be supplied with a minimum 3" building drain line of ABS, schedule 40 PVC, or DWV PVC with approved supports at a maximum 4'-0"spacing and graded at 1/4" per foot slope. The building drain shall terminate at a point 2'-0" minimum outside of the foundation wall and 12" minimum below grade. Note: Building drain line may be graded at 1/8" per foot if there is a minimum 2 ½" clean out provided at the head of the horizontal run.

Mechanical;
The heat cross over duct shall be of an approved material and insulation rating for the area in which the home is to be placed. It shall be supported so as to be mostly straight and at an approved spacing for duct type used.

Electrical service connection;
The home shall be supplied with a service sized in accordance with the manufactures requirements for the home. The service disconnect means shall be located within 30'-0" of the home and must have a minimum 100 amp rating. In approved rental lot installations, the home may have a factory installed listed cord or be connected to the service in an approved manor. On privately owned lots the service equipment may be installed on the home provided it complies with section 550-23 exception number 2 a, b, and c of the NEC and it is an accepted method by the manufacture.

The service feeder conductors shall consist of 4 wires with the service entrance conductors sized in accordance with Table 310-16 note 3 of the NEC. The grounding conductor shall be sized in accordance with Table 250-94 of the NEC. The grounding and the grounded conductor (neutral) shall be bonded at the service disconnect means (meter) only. All 4 conductors must originate at the service disconnect, be inclosed in the same raceway or trench, and terminate in the distribution panel of the home.

Under ground conductors shall be of an approved type and buried a minimum of 18" in accordance with Table 300-5 of the NEC. Over head service conductors shall be of an approved type and supported with clearances in accordance with Article 230 section B "Overhead Service- Drop Conductors" of the NEC.

Service conductors that pass through threaded conduit openings, metal or plastic shall be protected by the use of an approved bushing (NEC 346-8 metal, 347-12 plastic). When metal conduit is used from an enclosure to ground for protection, a bonding bushing shall be used. PVC conduit must be schedule 80 and be rigidly supported to prevent damage.

5: Exterior Finish

Requirements for Occupancy;
Foundation vents shall be finished with 1/4" mesh wire or other approved method. Under floor access shall have an approved closure to prevent varmint and weather access. Entrances to home shall have minimum 3'-0" square landings on the exterior of home to grade. If steps are required, the minimum tread width shall be 9" and the maximum riser height shall be 8". If the landing is in excess of 30" above grade, there shall be approved railing installed.

Due to liabilities of the home manufacture, dealer, set-up contractor and the inspector, a certificate of occupancy shall be issued prior to occupancy of any factory built housing.

6: INSPECTION REQUIREMENTS

INSPECTION NOTIFICATION

Due to the area coverage size, a minimum 24-hour notice will be required for any afternoon inspections and a 48-hour notice will be required for any morning inspections. Conformation of appointment day will be given however time of inspection will not be guaranteed. For inspection scheduling and confirmation please call Glenna in Duchesne at 738-1150, in Roosevelt at722-3997 ext. 150, in the Uintah Basin at 822-4680 ext. 150 or from S.L.C. at 363-9029 ext. 150 NOTE: Messages left on voice mail will not be considered notice.

ALL MANUFACTURED HOUSING INSTALLATIONS AND ACCESSORY STRICTURES SHALL BE INSPECTED; For compliance with to the approved plans. Any changes to the approved plans or substitute of materials shall be submitted to the chief code official for approval by the owner, builder and/or architect/engineer prior to any changes being incorporated in the structure.

APPROVAL REQUIRED; No work shall be done on any part of the installation or accessory construction beyond the point indicated in each successive inspection without first obtaining an inspection and approval of the code official.

Inspections are required on the following:

1. Presite; for confirmation of setbacks, property location and soil conditions
2. Footings; for confirmation of reinforcement placement and footing configuration and form size
3. Foundation; for confirmation of reinforcement placement, anchoring provisions, window/door or access locations and form shoring
4. Bond beams; for masonry foundation and wall construction only
5. Foundation waterproofing when required (FHA financing or basements)
6. Underground plumbing form home to sewer and water source
7. Under floor slab for moisture barrier and under floor plumbing, electrical and heating (Basements)
8. *Marriage line roof connection prior to sheeting closure or shingling
9. *Home set-up; interior and exterior connections prior to any finish material coverage, main frame support system, floor connection, cross over connection of water, sewer, heating and electrical.
10. Utility connections to water, sewer, gas and electrical (any underground prior to burial)
11. Final inspection; after interior and exterior finish and a minimum of one permanent access to home prior to occupancy of home
    
    *The above items with one asterisk can be conducted at the same time.
    
    OCCUPANCY REQUIREMENTS
    THERE SHALL BE A FINAL INSPECTION AND APPROVAL, AND A CERTIFICATE OF OCCUPANCY SHALL BE ISSUED ON ALL BUILDINGS AND STRUCTURES PRIOR TO THEIR BEING OCCUPIED OR USED.
    

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Department of Building Safety
734 North Center Street
P.O. Box 317
Duchesne, Utah 84021
(435) 738-1153
kmott@co.duchesne.ut.us

© 1997-2003 Duchesne County, Duchesne Utah
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