Manufactured Home Installer CE Course Approved by the Department of - PowerPoint PPT Presentation

Manufactured Home Installer CE Course • Approved by the Department of Safety & Professional Services – Approval #16957 • Presented by the Wisconsin Housing Alliance

Contents of this Course • SPS 321 Code Enforcement Refresher – Glazing – Ventilation – Fire protection – Preserved wood • Installation Standard applicable Post-2007 Home • Soils • Piers, Shims & Caps

Primary Resources • UDC Code SPS 321 • Installation Code (engrossed version of Part 3285 with Wisconsin Amendments • Soil Classification Information • Slides

Let’s Get Started • The UDC applies to site build homes as of June 1, 1980. It also applies to the installation of manufactured homes. (However, the production date as shown on the data plate determines which installation code applies.) • Act 45 laws of 2005 authorized the Department Commerce (now Department of Safety & Professional Services) to adopt installation standards. • The UDC applies to additions to manufactured homes including garages, exterior decks and steps.

• The following slides discuss several sections of the Uniform Dwelling Code. While these do not apply to a manufactured home, they do apply and may come into play as additions to the home are built. • Exceptions or differences between the UDC and the HUD Code are indicated on some slides but those notations are for information only and are not comprehensive.

Glazing Requirements • Glazing is not often a consideration for home installers but it can be if a door or window is altered. • Both the UDC and the HUD Code have a general rule that glazed openings shall be at least 8% of the gross floor area. (3280.103 and SPS 321.05 • The HUD Code has no exceptions but the UDC does.

Glazing • UDC glazing exceptions – Habitable rooms, other than bedrooms, located in basements or ground floors do not require natural light. – Natural light may be obtained from adjoining areas through glazed openings, louvers or other approved methods.

UDC Glazing • Door openings into adjoining areas may not be used to satisfy the 8% standard. • Natural ventilation is required in all habitable rooms

HUD Ventilation • Each manufactured home must have whole house ventilation with a capacity of 0.035 ft 3/ min/ft 2. This is in addition to any openable window area. • The ventilation system must not draw or expel air into the floor, wall or ceiling/roof systems

Ventilation • Natural ventilation can be provided by: – Openable doors (UDC only) – Openable skylights (UDC only) – Openable windows (UDC & HUD)

UDC Ventilation • The net area of the openable doors, skylights or windows shall be at least 3.5% of the net floor area of the room. • Infiltration cannot be considered as make up air. • All exhaust shall terminate outside the building

HUD Ventilation • At least half of the minimum glazed area shall be openable directly to the outside for unobstructed ventilation.

UDC Safety Glazing • Safety glazing is required in doors by the Consumer Product Safety Commission. • Safety glass is required when installed in any of the following locations: – In any sidelight or glazing adjacent to a door that meets all of the following: • The nearest point of the glazing is within 2 feet of the door. • The nearest point of the glazing is within 5 feet of the floor. • The plane of the glazing is within 30 degrees of the plane of the door when the door is in the closed position.

UDC Glazing Requirements • In any wall where the glazing is within 5 feet vertically of the lowest drain inlet and within 3 feet horizontally of the nearest part of the inner rim of a bathtub, hot tub, shower, spa or whirlpool appliance. • Within 4 feet vertically of a tread or landing in a stairway and within one foot horizontally of the near edge of the tread or landing. • Within 4 feet vertically of the floor and 3 feet horizontally of the nosing of the top or bottom tread of a stair. • Safety glass is not required where the size of an individual pane of glass is 8 inches or less in the least dimension SPS 321.05

UDC Glazing • Glass blocks are considered to be masonry products and are regulated under the ACI 530 standard adopted under s. SPS 320.24. They are not required to be safety glazing.

Ceiling Heights • Both the HUD Code and UDC have a general requirement for 7 foot ceiling heights. • Both allow less than 7 feet for 50 percent of the floor area but the UDC requires 7 feet in all habitable rooms, kitchens, hallways, bathrooms and corridors • The HUD Code requirement applies to all habitable rooms and bathrooms. Hallways and foyers can be 6’ 6”.

Ceiling Height • The UDC allows beams and girders or other projections shall not project more than 8 inches below the required ceiling height.

Attics and Crawl Space Access • An attic or a loft is a space found directly below the pitched roof of a house. As attics fill the space between the ceiling of the top floor of a building and the slanted roof, they are known for being awkwardly shaped spaces with exposed rafters and difficult-to-reach corners. Measurements can be difficult if you don’t know where to measure.

• Attics with 150 or more square feet of area and 30 or more inches of clear height between the top of the ceiling framing and the bottom of the rafter or top truss chord framing shall be provided with an access opening of at least 14 by 24 inches, accessible from inside the structure.

UDC Attic Access • Attics with 150 or more square feet of area and 30 or more inches of clear height between the top of the ceiling framing and the bottom of the rafter or top truss chord framing shall be provided with an access opening of at least 14 by 24 inches, accessible from inside the structure.

Measure from top of the framing To the bottom of the rafter or truss

Crawl Space Access • UDC - Crawl spaces with 18 inches of clearance or more between the crawl space floor and the underside of the house floor joist framing shall be provided with an access opening of at least 14 by 24 inches. • HUD - Access opening(s) not less than 18 inches in width and 24 inches in height and not less than three square feet (ft.2) in area must be provided and must be located so that any utility connections located under the home are accessible.

UDC Fire Separation • Fire separation distance is to be measured perpendicular from wall to wall or property line, ignoring overhangs.

• Fire separation distances between manufactured home within a manufactured community are established shall be provided in accordance with the distances specified in s. SPS 326 unless there are other local standards.

UDC Fire Rated Construction • Is designed to protect the home from external fire sources. • Between a dwelling and a detached garage the fire rated construction may be on either facing wall. (SPS 321.08) • However, between 2 dwellings, the fire rated construction shall be on both facing walls.

Fire Rated Construction • Fire rated construction for a wall facing a detached garage is a 3/4 th hour wall. • Fire rated construction for a wall facing another dwelling is also a 3/4 th hour wall. • Fire rated construction for a window facing a detached garage is 1/3 rd hour. • Fire rated construction for a door and frame assembly between the dwelling unit and an attached garage is 1/3 rd hour.

Fire Rated Construction • The minimum separation distance between a dwelling and detached garage is 5 feet.

Fire Rated Construction • The minimum separation distance 20 feet does not require fire rated construction. • Fire separation distance between a dwelling and the property line of 3 feet or more means that fire rated construction is not required.

Fire Rated Construction • Gypsum Board comes in 3 types – Regular, Type X & Foil Backed • Fire rated construction requires Type X • One layer of 5/8-inch Type X gypsum drywall on the garage side of the separation wall or ceiling is one example of fire rated construction. • Two layers of ½-inch gypsum drywall on the garage side of the separation wall or ceiling is an example of fire rated construction.

Joints • Joints must be taped or sealed. • Joints shall be fitted so that the gap is no more than 1/20-inch with joints backed by either solid wood or another layer of drywall such that the joints are staggered. Note: 1/20-inch is approximately the thickness of a U.S. dime.

Fire Rated Construction • The door and frame assembly between the dwelling unit and an attached garage shall be labeled by an independent testing agency as having a minimum fire-resistive rating of 20 minutes. (Home improvement stores generally sell 20 minute and 90 minute doors. Often there is no price difference so shop smart.)

• A window can be installed in a fire rated door only if allowed by the door's listing.

Draft Stopping • Acceptable draft stopping materials for concealed roof spaces and attics include: • A. 3/8-inch wood structural panel • B. ½ -inch gypsum board