6-115
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