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639.02 Materials Materials for buildings shall be of good qual ity customarily used in
standard frame house or office trailer construction.
639.03 General The building of the type called for shall be pr ovided before the start of
work, and shall remain until work is completed and accepted, un less earlier removal is authorized. The location shall be approved by the Resident and should be adjacent or virtually adjacent to the Project. A fire extinguisher shall be provided in each building or offic e trailer for electrical and chemical fires and effective on all solvents used in the buildi ng. Walls, roof, floor, windows, and doors shall be tightly constru cted to the required area. Furnishings shall be supplied as called for. Doors shall be eq uipped with locks and all keys shall be in the possession of the Resident. Windows shall be equipped with latches so they may be locked on the inside. Window screens and screen do ors shall be supplied when necessary. Adequate desk and desk space shall be provided. If a portable table is supplied, it should be adjustable to accommodate the various heights of empl oyees. A 5-way adjustable office chair shall be provided in the quantities listed.
639.04 Field Offices Field Offices are designated Type A, Type B, or Type C.
Buildings, including trailers, may be provided if they substant ially equal or exceed the following requirements. Air conditioning, appropriate to the b uilding size, shall be provided in all field offices. The walls, roof, and floor of the building shall be completely insulated with a minimum insulation value of R-15. Office trailers shall be either new or in very good used condition. The interior walls shall be covered with suitable wall paneling . The entire office trailer shall be for the exclusive use of the Resident. The office trailer s hall be winterized and completely enclosed at the bottom, if the trailer will be used in cold weather. Other types of buildings and facilities may be furnished of equ al or better quality. A public work area will be provide d in the field office that sh all be designed and constructed so that individuals with disabilities can approach, enter, and exit this area. At least one accessible route t o the field office shall be prov ided from accessible parking. The accessible route shall comply with the Americans with Disabilities Act Accessibility Guidelines (ADAAG) and this specification. The minimum clear width of an accessible route shall be 36 inch es except at doors. The least possible slope shall be used for an accessible route. An accessible route with a running slope greater than 1:20 shall be considered a ramp. Maximum ra mp slope is 1:12. The maximum rise for any run of a ramp shall be 30 inches and the m inimum clear width shall be 36 inches. Nowhere shall the cross slope of an accessible r oute exceed 1:50. Changes in level up to ¼ inch may be vertical and without edge treatment. Changes in level between ¼ 6-116 inch and ½ inch shall be beveled with a slope no greater than 1 :2. Ramp floor surfaces shall be stable, firm, and slip-resistant. Ground floor surfaces along accessi ble routes and in accessible rooms and spaces including floors, walks, ramps, stairs, and curb ramps, shall b e stable, firm, and slip- resistant. The main door to the public work area shall have a minimum clea r opening of 32 inches with the door opened 90 degrees, measured between the face of d oor and the opposite stop. Minimum maneuvering clearances at doors shall be provided. The floor or ground area within the required clearances shall be level and clear. The handle and other operating devices on accessible doors shal l have a shape that is easy to grasp with one hand and does not require tight grasping . Lever-operated mechanisms push type mechanisms, and U-shaped handles are accep table designs. Hardware required for accessible door passage shall be mounted no higher than 48 inches above finished floor. A minimum of 3 parking spaces will be supplied for Class B & C Field Offices and 6 for Class A. One wheelchair accessible parking space shall be loca ted on the shortest accessible route of travel from adjacent parking to an accessible entrance . Level landings shall be provided at bottom and top of each run. The landing shall be at least as wide as the ramp run leading to it with a minimum leng th of 60 inches. If a ramp run has a rise greater than 6 inches or a horizontal projection greater than 72 inches, then it shall have handrails on both sides. Handrails shall have the following features:
1.Handrails shall be provided along both sides of ramp segmen ts. The inside handrail on switchback ramps shall always be continuous.
2.If handrails are not continuous, they shall extend at least 12 inches beyond the top and bottom of the ramp segment and shall be parallel with the f loor or ground surface.
3.The clear space between the handrail and the wall shall be 1½ inch.
4.Gripping surfaces shall be continuous. 5) Top of handrail gripping surfaces shall be mounted between 34 and 38 inches above ramp surfaces.
6.Ends of handrails shall be either rounded or returned smoot hly to floor, wall, or post.
7.Handrails shall not rotate within their fittings. 6-117
8.The diameter or width of t he gripping surfaces of a handrai l shall be 1¼ to 1½ inch, or the shape shall provide a n equivalent gripping surface. Firm and sturdy steps shall also be provided with 7 inch maximu m riser and 11 inch minimum depth, and at least one handrail extending from the top of the steps to a minimum 12 inches beyond the bottom of the steps. The Contractor will make reasonable effort(s) to provide wheelc hair accessible toilet facilities when "portable" facilities are provided. The Contractor shall provide wheelchair accessible toilet facil ities when flush type facilities, that is, those with running water, are provided; an d the Contractor shall provide wheelchair accessible portable facilities, if used, when the co ntract duration exceeds two continuous construction seasons. In addition to the facilities previously specified in this subs ection, each field office shall meet the following minimum requirements: Description Q u a n tity T y p e A Type B Type C Floor Area (Outside Dimension) - ft2 312 220 125 Inside Wall Height – feet 7 7 7 Window Area - ft2 55 35 35 Drafting Table Surface Area - ft2 15 15 15 Drafting Stools - each 2 1 1 Office Desks - each 2 1 1 Ergonomic Swivel Chairs -ea (5-way adjustable) 3 2 2 Folding Chairs - each 3 2 2 Lighting Units - each 4 2 2 Electric Wall Outlets - each 6 4 3 Power Strip Surge Protectors - each 3 2 1 Wall Closets - each 1 1 1 Plan Rack for minimum of 6 sets of plans 1 1 0 Toilet Facility 1 1 1 Wastebaskets - each 2 2 1 All windows shall be provided with shades or blinds. The toilet facility shall be for the exclusive use of State per sonnel. If requested, the Contractor will supply a lock to ensure exclusive use. The Resident will have the option to reject any furniture or su pplies provided to the field office based on general condition. One hundred ten volt, 60 cycle, continuous electric service sha ll be supplied for lighting and 15 amp duplex wall outlets. Lighting shall consist of flor escent light units with rapid 6-118 start bulbs or LED shop style lights located over the work area s for a minimum of 50 foot candles overall. At least one external light source will be pr ovided. Drafting surfaces shall be 40 inc hes above the floor and have s helves beneath. Shelves for plans and rolls shall also be furnished overhead. Drafting stools shall be approximately 28 inches high. Desks shall be single or double pedestal standard office type, and shall be in addition to “built-in” type desks in the office trailer. Field offices shall be furnished with one four-drawer letter si ze metal filing cabinet. Wall closets shall be 21 inches wide, 15 inches deep, and at le ast 4 feet high. Each office shall be furnished with a broom, dustpan, sweeping compound, trash bags, and with cleaning material for cleaning glass. If the field of fice is carpeted, then a vacuum cleaner will be provided. The contractor will be responsible f or disposing of trash from the field office. The Contractor shall provide a fully functional wireless deskt op copier/scanner/printer, capable of copying field books, for the Resident’s use during the project. All maintenance and supplies, except paper, shall be the responsibility of the Contractor. The Contractor shall provide bottled water and a microwave for the duration of the project. All maintenance and supplies shall be the responsibil ity of the Contractor. Alternate source of water, such as a water cooler, may be provided as app roved by resident. The Contractor shall provide a 4 c ubic-foot refrigerator in the field office for the duration of the project. Each office shall be furnished with a 10-person general-purpose first aid kit. The first aid kit shall be periodically inspected and refilled as necessa ry.
639.08 Heat Heat appropriate to the building size shall be sup plied by the Contractor to
maintain an acceptable room temperature during occupancy. 639.091 Broadband Connection The contractor will supply one co mputer broadband connection, modem lease and router. The router shall have wirel ess access and be 802.11n or newer capable. The type of connection supplied will be conti ngent upon the availability of services (i.e. DSL or Cable Broadband). It shall be the con tractor’s option to provide dynamic or static IP addresses through the service. The select ed service will have a minimum download connection of 5.0 Mbps and 1.0 Mbps upload. T he contractor shall be responsible for the installation charges and all reinstallation charges following suspended periods. Monthly service and maintenance charges shall be bill ed by the Internet Service Provider (ISP) directly to the contractor. 6-119
639.10 Method of Measurement Field office will be measured by the unit or lump sum
for each building provided, equipped and maintained satisfactor ily.
639.11 Basis of Payment The accepted quantity of field office will be paid for at the
contract unit price each or lump sum which payment shall be ful l compensation for furnishing until contract completion, erecting, equipping, main taining, furnishing electricity, heating, installing and maintaining toilet facilities and if ne cessary removing the buildings or office trailers. Payment for these items will be made in 3 parts; the first paym ent of ½ to be made after the Contractor has supplied the building or office trailer and it has been approved. The remaining payments shall be made at intervals as follows: A second payment of ¼ shall be made when one-half of the antici pated work has been completed. The final payment of the rem aining ¼ shall be made upon complet ion of the work. Payment will be made under: Pay Item P a y U n i t
639.18 Field Office, Type A Each
639.19 Field Office, Type B Each
639.20 Field Office, Type C Each
SECTION 640 - VACANT SECTION 641 - REST AREA FACILITIES Reserved SECTION 642 - STEPS
642.01 Description This work shall consist of the constructio n of wooden steps,
precast concrete steps or cast-in-place concrete steps in accor dance with these specifications and in reasonably close conformity with dimensions and designs shown on the plans.
642.02 Materials Materials for the steps shall meet the requi rements as specified in
the following Sections of Division 700 - Materials: Exterior Ready Mixed Paint 708.01 T i m b e r P r e s e r v a t i v e 708.05 Precast Concrete Units 712.06
Source: Maine Standard Specifications for Road and Bridge Construction, 2020 Edition. Pages 585–589 of 817.