2011FINALNewOffTrlrSpecs.doc

Trailer Specifications DOT - Federal Highway Administration - CFLHD

Mobile Construction Office Trailers

1) SIZE – 8’ x 35’, including hitch.

2) TYPE – Double (2) axle, Office Trailer.

3) CHASSIS - The intended use of these trailers involves frequent moves & relocations requiring long distance & some off road transport. To meet these transport requirements and to meet all specified running gear and clearance requirements without the use of spacer tubes, or wheel wells protruding into the floor of the trailer, the main I-beams shall be 12”. The trailer frame & drawbar system shall be of steel fabrication & entirely protected to prevent rust & corrosion.

4) HITCH/COUPLER - The A-frame hitch shall be the same height as the main steel I-beams and shall not be underslung or be demountable. The coupler shall be an A-frame mounted coupler including a 2 - 5/16” size ball hitch. Center of coupler socket to be located not less than 20” nor more than 26” from ground level. A-frame hitch is to be constructed in such a way as to allow for the use of equalizer distribution hitches, which the successful bidder will provide for each trailer.

5) STAIRS - Double (2) riser fold out stairs, 24” wide, are to be mounted under each door. Stairs must be bolted or welded to frame. Lag screws are not acceptable.

6) JACK - Shall be a 2 speed semi-type jack, A-frame mounted, with swivel sand shoe. Jack to include jack handle, that when extended in the cranking position, should clear front wall by a minimum of 2" when raising or lowering. Jack must be mounted high enough into A-frame to minimize dragging.

7) AXLES - Axles are to be permanent non-disposable type. Trailer shall have two (2) 6,000 lb straight, round tube Axles with backing plates. Axles, Hub-Drum group and electric brakes to be DEXTER (or equivalent).

8) BRAKES - Each axle to be equipped with 12” x 2” electric brakes with backing plates. All exposed brake wiring to be adequately secured to axles & frame.

9) SPRINGS - Each Axle to be equipped with under-mounted slipper springs rated @ 3,500 lbs minimum.

10) WHEELS - Rims to be 14.5 x 6.00 demountable (donut) type, with steel clamp-in valve stems & caps.

11) TIRES - Tires shall be 8.00-14.5, MH type, load range “F”, 12 ply, rated for 2790 lbs @ 100 PSI. Required clearance from all plumbing is 3”, and from underbelly is 2 ½”.

12) FRAMING

A) Floor - Floor to utilize 2” x 6”, #2 or better wood joists 16” o.c., with solid block bridging in center of span.

B) Walls - Walls to utilize 2” x 4”, #2 or better wood studs, using a double top plate on exterior walls, 16” o.c. Wall height to be 7’6” min.

C) Partitions - To utilize 2” x 4” wood studs.

D) Roof – Roof frame shall utilize Certified Bow Trusses, 40 lbs PSF.

13) INSULATION - Fiberglas building insulation with thermal resistance R-minimum values to be R-13 in walls, R-19 in floor & ceiling.

14) INSULATION/WEATHER BARRIER – Monsanto Fome-Core or equivalent shall be installed over the plywood sheathing on the exterior walls, under the joists, and over the plywood on the bow trusses.

15) UNDERBELLY – “Polymax”, polyvinyl, RY 3mil type, .030”, by Firstline Corporation, or equivalent. All seams are to be taped with Firstline Corp. #620 “High Tack” tape (or equivalent). Underbelly shall be made rodent-proof, in that no opening shall exceed 1/8”. To be installed over Fome-Core insulation weather barrier.

16) SUBFLOOR – Subfloor shall be constructed with ¾” CDX Tongue & Groove plywood. Plywood shall be affixed to joists using adequate flooring glue & screws.

17) FLOOR COVERINGS – All office and work areas are to be carpeted with a 26oz, polypropylene, commercial grade carpeting. Carpeting is to be a glue down type, installed in all areas except the rest room. The rest room area is to be covered with a lightly colored vinyl linoleum rolled sheet goods installed seamlessly.

18) ROOF STRUCTURE – The Bow Truss roof members shall be certified to 40 PSF snow load, and shall be designed to accommodate the overhead duct work system. In addition to conventional fastening, trusses shall be securely fastened by means of storm clips or metal strapping. Additional Hurricane Straps shall be installed over trusses, and terminate below trailer underside.

19) ROOF COVERING - The roof covering shall be .030” seamless aluminum, over insulation weather barrier, over 3/8” CDX plywood, which will be screwed to roof trusses.

20) INTERIOR WALL/PARTITION CEILING COVERINGS - ¼” minimum thickness, lightly colored, vinyl-wrapped paneling with matching trims & battens. The successful bidder will provide samples for FHWA to choose.

21) ROOM PARTITIONS - Interior partition walls shall consist of walls for the rest room and wall for the rear office. Locations shall be designated upon receipt of plans & drawings from the successful bidder.

22) EXTERIOR SIDING - Shall be a prepainted White, 0.24”, flat stock aluminum sheet, mounted vertically over insulation/weather barrier, over 3/8” CDX plywood, using screws. Drip rails are required the full length on both sides of trailer as well as over both exterior doors.

23) EXTERIOR DOORS - Two (2) doors shall be 3’0” x 6’8”, with both doors & jambs constructed of 16 gauge steel. Doors to include 10” x 10” Lexan window. Doors shall be painted to match white exterior siding. The door swing on both doors is to be LH out, and shall include exterior siding door bump for siding. Adequate weather stripping shall be installed. Exact location of exterior doors to be designated by FHWA upon receipt of plans, drawings from the successful bidder.

24) INTERIOR DOORS - All partition doors are pocket type doors. Partition wall door to rear office shall be 3’0”. Lavatory rest room door to be the maximum size that can be configured in the rest room layout. Both pocket doors must be securable for transit.

25) DOOR LOCKS - Each exterior door shall have one door knob & one deadbolt. All locks on each trailer are to be keyed alike, while each trailer is to be keyed differently. All locks on all trailers are to be served by our master key, which is keyed to our bitting #’s, which will be given out upon award of contract. Sargent double cylinder deadbolt part # 485-15, or equivalent. Sargent single cylinder with thumb latch inside door lock part # 2428-6G-050B26D (6-pin), or equivalent. All locks to have a 2 - ¾” backset, with LA keyway, with tumblers installed up. Interior partition doors to have combination pull hardware. Rest room to be privacy type, while the rear office is to be passage thumb latch type.

26) WINDOWS - There shall be six (6) standard 46”(w) x 27”(h) and one (1) standard 13”(w) x 13”(h) mill finish horizontal sliding windows, on the exterior, and six (6) standard 46”(w) x 27”(h) and (1) standard 13”(w) x 13”(h) white finish horizontal sliding windows on the interior. The 13” x 13” windows are to be installed in the rest room. All windows are to have screens. The bottom of the main windows should be 42” off the finished floor. Location of all windows to be designated by the government upon receipt of plans & drawings from the successful bidder.

27) MAIN ELECTRICAL POWER DISTRIBUTION

The main service entry wire to be #6/4 from inside panel terminating at rear curbside (driver side) bottom of trailer with a Male 50 amp, 240v, 4 wire cord cap extending 12” below underbelly. This wire from panel to underside shall be run in conduit to trailer underside. Each trailer will be supplied with a 36’ #6/4 SO 50 amp cord with a 50amp Female cord cap at one end, and a corresponding 50 amp Male cord cap, NEMA # 14-50R, at the other. Disconnect at exterior panel is required. All wire to be copper.

28) ELECTRICAL POWER DISTRIBUTION

Each trailer shall have a 125 amp, 125/250v, 16 circuit electrical service panel with a 50 amp main breaker installed at the curbside (left) rear of the trailer, inside the rear office. All 120 volt circuits, except for HWH (where necessary), are to use #12 awg wire. Twenty (20) Duplex receptacles are to be installed in each trailer. Receptacles to be installed 38” above finished floor. Locations to be determined upon plans, drawings from the successful bidder.

29) SEPARATE GFCI RECEPTACLES - Two GFCI circuits are required. One will supply the rest room, and one will supply the two exterior receptacles located one on each side of the trailer.

30) INTERIOR LIGHTING - Ten (10) open channel, electronic ballast, two-4’, flourescent lamp fixtures with clear protective sleeves or lensed lamp fixtures shall be on a dedicated circuit and shall be on a three way switch located at each door.

31) EXTERIOR LIGHTING - One 70w minimum, watertight fixture shall be located at each main entry door, and shall both be individually switched from the inside of each main door.

32) HOT WATER HEATING - Each trailer shall have a 2 - 1/2 gallon (min) 120v electric hot water heat tank installed. Tank shall be securely fastened to wall or floor, while allowing easy access for HWH element replacement. To be wired w/cord cap to plug into outlet located under the sink vanity. HWH must be gravity drainable.

33) PLUMBING - Water supply to utilize ½” polybutylene or PEX, 100 PSI pipe (or equivalent), with copper and/or brass fittings and appropriate crimping rings. Water supply will originate 18” below trailer underbelly with a 1/2” poly to ¾” female brass hose fitting. Each fixture shall have its own individual shut off valve, including both hot & cold water at the sink. DWV system shall use ABS pipe. Supply & Waste lines shall not obstruct with ability to change tires. All interior piping is to be concealed. Sewer line will terminate below the underbelly long enough to attach required fittings. Trailer will ship w/removable cap over waste line. All plumbing & waste lines must clear running gear by a minimum of 3”.

34) LAVATORY/ FIXTURES - Each trailer shall contain a rest room/lavatory that will contain the following fixtures: house type china toilet, a sink with hot & cold water and vanity, an upper wall storage cabinet, and a sink vanity mirror. There shall also be an overhead light and exhaust fan, to be switched separately. The interior dimensions of the facility should be a minimum of 15 sq. ft. Exact location will be determined upon receipt of plans, drawings from the successful bidder.

35) HVAC SYSTEM

One front wall mounted 2-ton Air Conditioner with 8 kw heater with an overhead distribution and an adequate in-wall (per manufacturer’s recommendations) cold air return system shall be installed on each trailer. Vent grills shall be provided in partition wall or doors for uninterrupted flow. HVAC system, in addition to other electrical in trailer, must be capable of being run of a 50 amp, 125/250v electrical supply. Exterior disconnect is required. Marvair AVP24ACA-08M (or equivalent).

36) PHONE JACKS - There shall be six (6) pre-wired duplex phone jacks installed in each trailer. Trailer phone & IT connections will be wired with Cat6 wire. Top 6 connections to be wired for phone/fax connections, bottom 6 to be wire for IT 8-pin connections. Location of jacks to be determined upon plans, receipts from the successful bidder. All wire to terminate in a junction box located at curbside(left) lower rear of trailer, near electrical service panel.

37) SMOKE DETECTORS - Two (2) 120v smoke detectors w/battery backup power supply shall be installed in each trailer, one per rear office, and one per main office.

38) EXTERIOR TRAILER LIGHTING DEVICES

· Stop, tail & signal lights to be dual compartment, modular type, recessed into the rear bumper, cross member, or rear wall.

· Running lights to be metal-framed, and shall each be individually grounded.

· Running lights shall consist of thirteen (13) wall mounted lights and ten (10) wall mounted screwed on reflectors. Must meet all DOT standards & regulations.

· Running lights will originate with a 7- Round Pin, semi-type plug & inverted plug holder. Plug will be attached to a minimum of 8ft. of #12/6, #10/1 trailer cord running from a Berg (or equivalent) quick connect box located on the center left of the front wall.

· The license plate holders are to be equipped with light, and their own dedicated ground wires.

· All underside exposed wires will be securely fastened to trailer frame members.

Locations, colors & placements to be determined by FHWA upon receipt of plans, drawings from the successful bidder.

NOTE: The manufacturer shall ensure road worthiness of the trailers by demonstrating proper operability of the electrical, plumbing, mechanical, security and braking systems before the finished trailers are sent to the FHWA Equipment Depot.

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