West Virginia Manufactured Home Installation Contractor Examination

After blocking and leveling a new manufactured home, what must the installer do before considering the installation complete under 24 CFR 3285?

• ASecure the home against the wind with an anchor-assembly installation or by connecting it…
• BBackfill the hitch and axle pockets and apply finish grade only
• CInstall skirting first so the crawlspace can be used as the wind-resistance system
• DWait 30 days for the soil to consolidate before any anchorage is installed

Unless a reduced capacity is specifically noted in the 3285.402 tables, each installed ground anchor and its tie-down strap must be capable of which pair of loads?

• AA working load of 3,150 lbs and an ultimate load of 4,725 lbs
• BA working load of 2,000 lbs and an ultimate load of 3,000 lbs
• CA working load of 4,725 lbs and an ultimate load of 7,000 lbs
• DA working load of 5,000 lbs and an ultimate load of 10,000 lbs

Unless a larger strap is specified, what is the minimum steel strapping 24 CFR 3285.402 accepts for manufactured-home tie-downs?

• A3/4 inch by 0.020 inch painted strapping of any grade
• B1 inch by 0.020 inch stainless banding without an ASTM specification
• C1-1/4 inch by 0.035 inch or larger steel strapping conforming to ASTM D 3953, Type 1, Gra…
• D2 inch nylon cargo webbing rated only by the trucking company

What is the minimum zinc-coating equivalent 24 CFR 3285 requires for weather and corrosion protection on steel ground anchors, metal stabilizer plates, and steel tie-down straps?

• AA shop coat of red oxide primer only
• BHot-dip galvanizing of not less than 2.0 oz/ft² of surface coated
• CA coating of zinc on steel of not less than 0.30 oz/ft² of surface coated
• DNo coating is required if the hardware will be under the home

How deep must a listed ground anchor be installed under 24 CFR 3285.402?

• ATo its full depth, in accordance with its listing or certification and the anchor manufac…
• BTo whatever depth first develops 500 lbs of hand torque
• CUntil the helix is 12 inches below grade, regardless of shaft length
• DUntil the anchor head is 18 inches above grade so the strap can be inspected

The diagonal-strap spacing tables in 24 CFR 3285.402 are based on what range of angles between the diagonal strap and the ground?

• AA minimum of 30 degrees and a maximum of 60 degrees
• BA minimum of 15 degrees and a maximum of 45 degrees
• CA minimum of 45 degrees and a maximum of 90 degrees
• DAny angle is acceptable if the strap is tight

When are vertical ties required at each diagonal-tie location under the 24 CFR 3285.402 model tables?

• AOnly on single-section homes in Wind Zone I
• BOn all homes in every wind zone, including Wind Zone I
• COn manufactured homes designed to be located in Wind Zone II or Wind Zone III
• DOnly when the home has an attached garage

Which statement correctly describes longitudinal wind stabilization under 24 CFR 3285.402(d)(3)?

• AManufactured homes must be stabilized against wind in the longitudinal direction in all w…
• BLongitudinal anchoring is required only in Wind Zone III
• CLongitudinal straps may be omitted if the home has more than eight sidewall anchors
• DOnly the hitch end of a single-section home needs a longitudinal anchor

The 24 CFR 3285.402 diagonal-strap tables are based on placing straps within what distance of each end of the home?

• AWithin 2 feet of the ends of the home
• BWithin 6 feet of the ends of the home
• CExactly at the midpoint of each chassis beam
• DOnly at factory-welded shear-wall tags, with no end-strap rule

A ground anchor was tested and listed only in a Class 3 soil. The site torque-probe result places the soil in Class 4B. What does 24 CFR 3285.402 require?

• ADo not use that anchor; an anchor tested in a given soil classification must not be appro…
• BUse the Class 3 anchor anyway because Class 4B is stronger
• CDouble the number of Class 3 anchors and keep the same listing
• DDrive the Class 3 anchor twice as deep to convert the listing

In frost-susceptible soil, where must ground-anchor augers be installed under 24 CFR 3285.404?

• ABelow the frost line, unless the foundation system is frost-protected to prevent frost he…
• BAbove the frost line so the strap stays short
• CAt any depth if a concrete collar is poured at grade
• DOnly through the vapor retarder, with no frost-depth rule

If sidewall, over-the-roof, mate-line, or shear-wall straps are installed on the home, what does 24 CFR 3285.403 require?

• AThey must be connected to an anchoring assembly
• BThey may be left coiled in the marriage-line chase until the first inspection
• CThey replace all diagonal frame ties in Wind Zone I
• DThey may be nailed only to the bottom board

When a ground-anchor listing requires a stabilizer plate, which installation condition matches 24 CFR 3285.402?

• AThe correct size and type of stabilizer plate required by the listing must be installed;…
• BAny scrap plywood under the strap is an acceptable stabilizer plate
• CStabilizer plates are prohibited in West Virginia
• DA stabilizer plate is required only in Wind Zone III

If a diagonal tie is attached to the bottom flange of the main chassis beam, what additional frame condition does 24 CFR 3285.401 require?

• AThe frame must be designed to prevent rotation of the beam
• BThe I-beam must be notched so the strap sits flush
• CA second strap must be welded to the hitch
• DThe pier under that beam must be omitted so the strap can flex

When any part of a home is installed within 1,500 feet of a coastline in Wind Zone II or III, what does 24 CFR 3285.405 require?

• AThe home must be designed for the increased requirements specified on the data plate, and…
• BOrdinary Wind Zone I tables may be used if extra skirting screws are added
• COnly over-the-roof straps are required; ground anchors may be omitted
• DCoastal setback is a West Virginia-only 50-foot rule in 3285

In a flood hazard area, 24 CFR 3285.302 requires foundations, anchorings, and support systems to be capable of resisting design flood and wind (or combined) loads and to prevent which three movements of the home?

• AFloatation, collapse, or lateral movement
• BExpansion, contraction, and thermal bowing
• CSettlement, shrinkage, and creep only
• DOnly roof-sheathing uplift

Using the torque-probe method in the appendix to 24 CFR 3285.402, a steady reading of 160 inch-pounds at helix depth means which action?

• AA Class 2 anchor listing may be used without further review
• BThe soil is automatically Class 3 and any 3,150 lb anchor is acceptable
• CA professional engineer should be consulted because the reading is below 175 inch-pounds
• DThe probe reading may be ignored if the home is in Wind Zone I

Maximum ground-anchor and strap spacing must be determined how under 24 CFR 3285.402(d)?

• AFrom Tables 1 through 3 to 3285.402 for the home's wind zone, width, I-beam spacing, and…
• BBy using one statewide West Virginia spacing of 12 feet on center for every home
• CBy matching the pier spacing exactly, regardless of wind zone
• DBy the retailer's lot display, which is always acceptable in the field

When the local water-supply pressure to a manufactured home exceeds 80 psi, what does 24 CFR 3285.603 require?

• AA pressure-reducing valve must be installed
• BThe water heater must be removed from the home
• COnly a hose-bib vacuum breaker is required
• DThe supply may be connected with no added device if the pipe is PEX

Unless the schematic notes otherwise, what is the minimum slope 24 CFR 3285.604 requires for manufactured-home drain lines completed on site?

• AOne-quarter inch per foot, except that one-eighth inch per foot may be used when a clean-…
• BNo slope is required if the line is 3 inches or larger
• COne inch per foot for every drain, including vents
• DA reverse grade toward the home so traps stay primed

The manufactured-home gas piping system is designed for which supply-pressure range under 24 CFR 3285.605?

• AAt least 7 inches of water column (0.25 psi) and not more than 14 inches of water column…
• BA minimum of 2 psi and a maximum of 5 psi at every appliance
• CAny utility pressure if a flexible dryer hose is used as the connector
• DZero pressure until the homeowner lights the range

When a metal crossover duct is fastened to a collar under 24 CFR 3285.606, what is the minimum fastening and support combination?

• AA minimum of three equally spaced galvanized sheet-metal screws, with the duct suspended…
• BOne sheet-metal screw and support only at the furnace
• CDuct tape alone, with the duct laid on the ground
• DNails through the flex liner only, with no exterior listing

After electrical crossovers, lights, and ceiling fans are completed, which on-site tests does 24 CFR 3285.702 require?

• AAn electrical continuity test of bonded metallic parts, operational tests of devices and…
• BOnly a visual look at the panel directory
• CA 2-hour high-potential test of every factory branch circuit
• DNo electrical testing is allowed after the home leaves the plant

Under 24 CFR 3285.312, which statement about footings is correct?

• AA footing must support every pier
• BOnly corner piers need footings
• CFootings may be omitted when the soil looks like gravel
• DA single strip footing under one I-beam may carry the opposite beam without piers

Where may manufactured-home footings be placed under 24 CFR 3285.312(a)?

• AOn topsoil, sod, and wood scraps left in place for cushioning
• BOn uncompacted construction debris if the pad is thicker
• COn undisturbed soil or fill compacted to 90 percent of maximum relative density, after or…
• DOn frozen soil so the home can be set in winter and re-leveled in spring

What are the minimum concrete-footing specifications in 24 CFR 3285.312(a)(1)?

• AAny sack-crete pancake 1 inch thick, with no strength specified
• BEight-inch precast pads at 500 psi only
• CFour-inch nominal precast pads at least 1,200 psi at 28 days meeting ASTM C 90, or six-in…
• DUnreinforced 2-inch mortar beds under every pier

In a freezing climate, conventional manufactured-home footings must be placed where, unless an insulated foundation or monolithic slab is used?

• AOn grade, insulated only with the vapor retarder
• BExactly 12 inches below finish grade in every West Virginia county
• CBelow the frost-line depth for the site
• DAbove the frost line if extra piers are added

If the frost-line depth is not available from the local authority having jurisdiction, who must determine it under 24 CFR 3285.312(b)(1), and does that determination also need manufacturer/DAPIA variation approval?

• AThe transporter, and yes, DAPIA approval is always required
• BAny laborer on the crew, with no design professional
• CA registered professional engineer, registered architect, or registered geologist; that f…
• DThe homeowner, by digging until water appears

Which pressure-treated wood footing assembly is permitted by 24 CFR 3285.312(a)(2)?

• AA single layer of untreated 1/2-inch CDX of any size
• BParticleboard underlayment stacked three high
• CA minimum of two layers of nominal 2-inch pressure-treated wood, or a single layer of 3/4…
• DAny scrap 2-by lumber, including untreated spruce

ABS footing pads may be used under 24 CFR 3285.312 when which conditions are met?

• AThey are homemade from recycled plastic drums
• BThey are used only under marriage-line columns, with no listing
• CThey are installed in accordance with the pad manufacturer's instructions and are listed…
• DThey replace concrete only in floodways

What design capacities does 24 CFR 3285 assign to unreinforced concrete-block piers in the Table to 3285.312 notes?

• A4,000 lbs for any single block and 6,000 lbs for any double stack
• B20,000 lbs for every pier regardless of stack
• C8,000 lbs for an 8-inch by 16-inch single stack and 16,000 lbs for a 16-inch by 16-inch d…
• DNo capacity limit if the blocks are dry-stacked

If soil bearing capacity is not established by test, records, classification table, or penetrometer, what default allowable pressure may be used under 24 CFR 3285.202(e)?

• A500 psf in all cases
• B4,000 psf, the rock/hard-pan value, for every West Virginia site
• C1,500 psf, unless site-specific information requires a lower value based on soil classifi…
• DNo default exists; the home cannot be set

The site appears to be peat, organic clay, or uncompacted fill. Who must determine soil classification and maximum allowable bearing capacity under 24 CFR 3285.202(f)?

• AThe homeowner, by driving a fence post
• BAny installer with a pocket penetrometer, with no further review
• CA registered professional geologist, registered professional engineer, or registered arch…
• DThe transporter, using the data plate only

Before the foundation is constructed and anchored, 24 CFR 3285.202 requires soil classification and bearing capacity to be determined by which methods?

• AGuessing from the color of the grass only
• BThe county tax-card acreage only
• CSoil tests in accordance with generally accepted engineering practice; LAHJ soil records;…
• DThe home's HUD certification label number only

For soils classified CH or MH, if there are no torque-probe values and no blow-count results, how must selected ground anchors be rated under the Table to 24 CFR 3285.202?

• AAs Class 1 rock anchors
• BAs if the soil were sandy gravel at 2,000 psf
• CFor a 4B soil
• DNo anchor rating is required for clay soils

When may an alternative (non-pier-and-footing) foundation be used under 24 CFR 3285.301?

• AWhenever the installer prefers it, with no listing or design
• BOnly if the home is more than 20 years old
• CWhen it is manufactured and installed in accordance with a nationally recognized testing-…
• DOnly for recreational vehicles

What must the manufacturer's installation instructions indicate about flood-hazard foundation specifications under 24 CFR 3285.302?

• ANothing; flood design is never mentioned in the instructions
• BThat every pier pad is automatically adequate in a floodway
• CWhether the foundation specifications have been designed for flood-resistant consideratio…
• DThat skirting is an approved flood opening system in all cases

For homes designed for roof live loads greater than 40 psf, who must design the foundation under 24 CFR 3285.315, and how may a ramada be used?

• AAny installer may scale up the 20 psf table by eye; a ramada may bear on the home's ridge
• BSnow load is ignored in West Virginia
• CThe manufacturer must design the foundation for the special snow-load conditions, or a PE…
• DOnly additional marriage-line shims are required

Cut ends of pressure-treated lumber used for footings must be treated how under 24 CFR 3285.312?

• ALeft raw; factory treatment migrates to the cut
• BPainted with interior latex only
• CField-treated in accordance with AWPA Standard M4
• DWrapped in polyethylene and buried

How is an unreinforced cast-in-place footing sized under 24 CFR 3285.312(c)?

• AEvery pad is 8 inches by 8 inches regardless of soil or load
• BBy matching the width of the I-beam flange only
• CFrom the Table to 3285.312 using soil capacity and the pier load from 3285.202 and 3285.3…
• DBy using the next smaller pad than the table to save concrete

When may a monolithic slab be placed above the frost line under 24 CFR 3285.312(b)(2)?

• AWhenever the installer wants a faster winter set, with no design
• BWhen extra 4-inch precast pads are stacked on the slab
• CWhen a registered professional engineer or registered architect designs it for the site s…
• DNever; slabs are prohibited by 3285

A home's data plate shows Wind Zone I. The site is in a Wind Zone II county. What does 24 CFR 3285.103 require?

• AInstall the home anyway and add two extra frame ties
• BCover the data plate and proceed
• CDo not install the home in a wind zone that exceeds the design wind loads shown on the da…
• DOnly the thermal zone must match; wind zone is optional

How must fire-separation distances be established under 24 CFR 3285.101?

• ABy using any convenient 3-foot gap the crew prefers
• BFire separation is waived for HUD-code homes
• CIn accordance with Chapter 6 of NFPA 501A, 2003 edition, or the requirements of the local…
• DBy a single statewide West Virginia 3285 setback of 50 feet from every property line

Before agreeing on an installation method, who is responsible for determining whether a new-home site lies in a special flood hazard area, and what maps are used?

• AThe furniture mover, using a highway atlas
• BNobody; flood checks are optional for HUD-code homes
• CThe installer, using the LAHJ Flood Insurance Rate Map, Flood Boundary and Floodway Map,…
• DOnly the lender, after the home is occupied

A home's data plate shows a 20 psf roof-load zone and a thermal zone that does not include the installation county. What is required?

• AInstall anyway; only wind zone matters
• BAdd extra blankets in the attic in lieu of the correct thermal zone
• CPaint the roof white to change the roof-load zone
• DDo not locate the home in a roof-load zone or thermal zone that exceeds the design shown…

Unless the manufacturer's installation instructions already include it, how must an attached accessory building or add-on be designed under 24 CFR 3285.903(c)?

• AIt may hang its roof and floor loads on the home's sidewall with no further design
• BAny porch may be lagged to a single stud
• CAdd-ons are prohibited on all HUD-code homes
• DIt must be designed to support all of its own live and dead loads, or be designed by a re…

Where does the installer verify the home's design wind zone, roof-load zone, and thermal zone before placement?

• AOn the tow vehicle's registration only
• BOn the county business-license receipt
• COn the skirting carton label
• DOn the home's data plate, and for thermal zone also on the heating/cooling certificate an…