622.01 622-1 SECTION 622 REST AREAS AND BUILDINGS DESCRIPTION
622.01 This work consists of the construction of various facilities in rest areas and other areas
per these specifications and in conformity to the lines, grades, dimensions and details shown on the plans or established. When information shown on the plans are of general arrangements only, the Engineer will establish exact locations, measurements, levels, etc., at the site to adapt the work to suit actual conditions. MATERIALS
622.02 All materials used in the construction shall conform to the requirements of Section 717
and to the details shown on the plans or established.
622.03 Shop Drawings and Descriptive Brochures. At the Pre -construction Conference, the
Contractor shall submit to the Department five copies of shop drawings or descriptive brochures for all materials and equipment to be incorporated in the work for review by the Engineer . All work where shop drawings or descriptive brochures are required must be performed per such drawings, and work on the item shall not be started until review of said drawings. All shop drawings or descriptive brochures must be complete in every respect, numbered consecutively, have the name of the project printed thereon, and each transmittal must be accompanied by a letter directing the Engineer ’s attention to any changes from the plans. After shop drawings and descriptive brochures have been reviewed, any portion of the work covered by the shop drawings that modify the plans shall be rejected as soon as such modification is discovered unless said modification has been specifically pointed out to the Engineer review. The review of such shop drawings and descriptive brochures will be general in character and shall not relieve the Contractor from responsibility for their accuracy or for proper fitting and construction of the work, or from the necessity of furnishing any materials and workmanship required by the Contract, which may not be indicated on shop drawings when reviewed.
622.04 Construction Material. Structure excavation and structure backfill shall conform to
the requirements of Section 206. Treated timber shall conform to the requirements of Section 508. Concrete shall be Class “B” and conform to the requirements of Section 601. Reinforcing steel and fabric shall conform to the requirements of Section 602. CONSTRUCTION REQUIREMENTS
622.05 Services of Factory Representative. It is important that the Department be protected
as far as possible against the discontinuance of the make of equipment to be purchased, and that repair parts and the services of expert factory representatives be available if desired. Under these conditions the Contractor shall not furnish equipment made by firms in the hands of receivers. 622.06 622-2 622.06 Maintenance Manuals. The Contractor shall furnish to the Engineer five copies of instructions for the operation, lubrication and maintenance for all major items of equipment . The Contractor shall assemble all literature into five coordinated manuals with additional information describing the combined operation of field -assembled units, including as-constructed wiring diagrams. Manuals shall also contain the names, addresses of the manufacturer, and the local representative who stocks or furnishes repair parts for all items of equipment. All five manuals shall be turned over to the Engineer for review and distribution to the Department. Manuals shall include but not be limited to the above information for the following equipment: Furnace, water heater, well pump, exhaust fan, incinerators, timer , septic tank, emergency battery charger, and area luminaires.
622.07 Temporary Heat. All heating and electrical service required during construction for
the satisfactory prosecution of the work shall be furnished by the Contractor . Heating units must be of approved types, and equipment and surroundings shall be kept in a clean and safe condition. Open fires will not be permitted.
622.08 Temporary Utilities.
a.Water for Construction Purposes. The Contractor may use water pumped by the permanent well pump and equipment , if approved by the Engineer . The Contractor shall provide potable water for construction purposes at his expense. If temporary pumps are approved, all sanitary precautions necessary to prevent contamination of the well shall be taken.
b.Electrical. The Contractor shall furnish at his expense, all electrical power required for construction.
622.09 Barricades. When required, the Contractor shall barricade the entrance ramp to
the rest area during construction with standard barricades. The barricades will not be paid for separately but shall be included in the work.
622.10 Masonry Work .
a.Installation of Masonry . Concrete masonry units shall be placed in face shell mortar bedding with complete coverage of face shells. Extruded mortar shall be struck. After the mortar has stiffened somewhat, all joints shall be tooled with a rounded tool having a diameter slightly larger than the thickness of the joint. Mortar joints shall average 3/8 inch in thickness. Blocks shall be placed per local standard masonry practice. Reinforcement and wall ties shall be installed as indicated on the plans. Standard shapes of concrete masonry units such as radius, corner , jamb blocks, control joint blocks, bond course units and square end blocks, shall be furnished as required by the Contract. Structural glazed tile in toilets shall be placed with white mortar. Mortar joints shall not exceed 1/4 inch in thickness. All joints shall be tooled. The Contractor shall furnish cap courses, base courses, covings, bull- nosed corners and any special units necessary to complete a first -class job. Special shapes of tile required are shown on the plans. When cutting of tile is necessary, it shall be done with a special saw as recommended by the manufacturer. Chipped, warped or defective tiles will be rejected. All face brick shall be placed with joints about 3/8 inch thick. Joints shall be concave tooled joints. 622.11 622-3 Brick will be rejected if the edges and corners of finished faces have chippage exceeding the following maximum sizes: Edges 5/16 inch (measured in from edge) and corners, 1/2 inch (measured in from edge), or for any other structural or color defect. Each brick shall be placed in a full bed of mortar and shall be shoved in place. The Engineer may remove brick already placed to assure all joints are full. If j oints are not completely filled, the Engineer can order brick removed until assured that the joints of all remaining brick are completely filled. All face surfaces of the face brickwork shall be kept clean. After joints are struck, the surface shall be carefully cleaned. The faces and angles of all walls shall be carefully plumbed, and all work carried up true and even, laying all walls to lines.
b.Precautions and Protection . All work and materials shall be protected from the weather. Stored masonry units shall be stockpiled on planks to prevent contact with the ground.
c.Masonry Work in Cold Weather . Masonry shall not be placed when the surrounding air temperature is 40 °F or less, except when the masonry work is housed in a temporary manner, suitable to the Engineer , and the inside air temperature is kept within 40 °F to 80 °F for a period of 24 hours after the masonry is placed. Mortar for masonry work during cold weather shall have a minimum temperature of 50 °F and a maximum temperature of 100 °F at the time it is applied to the masonry. This temperature shall be provided by heating the mixing water or the aggregate or both if necessary. Masonry materials shall also be heated, if necessary, to provide at least a minimum temperature of 40 °F at the time they are pla ced.
d.Cleaning . After completion, all masonry units shall be thoroughly cleaned according to the masonry manufacturer’s recommendations. The Contractor shall protect adjacent work from damage during the cleaning operations . Cleaning shall start at the top and be continued down until such work is completed. All pointing will be inspected and the Contractor shall completely point up all voids.
622.11 Metal Specialties . Metal stalls or compartments for toilet rooms and mirrors shall be
of the type and style specified and shall be installed as shown on the plans.
622.12 Sanitary Napkin Disposal . Sanitary napkin dispenser and disposal for Women’s Rest
Rooms shall be installed as shown on the plans and per the manufacturer ’s recommendations.
622.13 Comfort Station and Sanitary Station Signs . Comfort Station and Sanitary Station
Signs shall be installed in the size and location shown on the plans.
622.14 Doors, Frames and Windows . Doors, frames, windows and door hardware shall be
installed as shown on plans. All doorframes shall have floor anchors installed to set flush with the finished floors. Two rubber door silencers shall be installed for strike jambs of each door. At least three masonry “T” anchors shall be installed at each jamb that is adjacent to masonry work.
622.15 Ceramic Tile.
a.General. The work required under this heading shall include all labor, material, equipment and services necessary for the furnishing and setting of all tile, as shown on the plans and as specified. The floor slab shall be clean and free of oily or waxy films. 622.16 622-4 (b) Installation of Ceramic Floor Tile.
1.Mortar Setting Bed. A mortar setting bed shall be applied over the floor slab to give a true and even setting bed. This mortar shall be composed of one part p ortland cement, six parts sand.
2.Setting Floor Tile. Floor tile shall be set by troweling a skim coat of neat p ortland cement mortar on the setting bed and immediately floating the tile into place. Joint width shall not exceed 1/16 inch.
3.Grouting. All joints in ceramic floor tile shall be grouted full of a grout mixture and application as recommended by the tile manufacturer immediately after a suitable area of tile has been set. A 1/8- inch bronze edging strip shall be provided under the metal thresholds where the ceramic floor tile terminates at the door.
4.Defective Tiles. All tiles chipped, broken, stained or otherwise imperfect, shall be considered defective, and shall not be set; any such defective tiles set shall be removed and replaced with approved tiles at the Contractor ’s expense.
5.Cleaning. Upon completion of the work, all t ile shall be thoroughly cleaned and left free from stains, scum, discoloration , and in an acceptable condition.
622.16 Roofing, Flashing and Roof Insulation . The work required under this heading shall
include all labor, material, equipment and services necessary for the proper furnishing and installing of all roofing, flashing and insulation materials as shown on the plans.
a.Flashing at Flues, Breather Vents, Vents, Roof Drains and Emergency Light Conduit . Flashings at sewer vent and roof drain shall be at least 2 feet square lead flanges soldered to lead sleeves of sufficient diameter to fit the pipe involved, placed over the last layer of felt and sealed in place with two plies of felt, hot mopped in place. The specified roofing shall be applied over this. At the vent, the lead sleeve shall be folded over the top of the 4 -inch soil pipe. At the roof drain, the lead sleeve or flange shall be securely clamped in place to make a watertight joint. Other mean s of flashing may be used if approved. Flashing at emergency light and breather vents shall be as detailed on the plans or directed. All flashing shall be installed before roofing operations begin.
b.Roofing Construction (Shingle Roofing). Shingles as shown on the plans shall be applied over two layers of 15 -pound asphalt felt in straight courses. Shingles shall be doubled at all eaves, and butts of first -course shingles shall project 1 1/2 inch beyond the first sheathing board. Spacing between adjacent shingles (joints) shall be 1/4 inch. Joints in any one course shall be separated at least 1 1/2 inches from joints in adjacent courses and joints in alternate courses shall not be in direct alignment. Exposure of shingles shall be 4 1/2 inch es for 16- inch shingle, 5 inches for 18 -inch shingle and 7 inches for 24 -inch shingle. 622.17 622-5 (c) Roofing Construction (Membrane Roofing). Membrane roofing shall be installed as follows: Starting at one side of the roof install one layer of 30- pound Per 100 square feet base sheet side lapped 2 inches and end lapped 4 inches. Nail and tin cap the base sheet to the deck with large -headed roofing nails through 1 1/2-inch diameter tin disks, 18 inches on centers. Over the base sheet in the same direction, install three layers of 15 pound per 100 square feet asphalt felt, solid mopped to the base sheet with 25 pounds per 100 square feet of specification asphalt. Felt sheets shall be lapped 24 in ch over preceding sheet and solid - mopped full of 25 pounds per 100 square feet of specification asphalt. All starter courses shall be enveloped in order to prevent drippage if low -melting -point material is being used. After flashing has been installed at all vertical projections, the entire surface shall be given a 60 pound per 100 square feet pour coat of specification asphalt into which, while asphalt is hot, the Contractor shall embe d 400 pounds per 100 square feet of clean gravel. Damp gravel is permissible. In cold weather, instead of applying roof three -ply solid, the 15 pounds per 100 square feet asphalt felts may be installed on a two and one application provided the entire roof is mopped at the end of each day ’s work. Where roofs pond water, the asphalt felt shall be coated at the end of the day ’s work. The bitumen used shall not be heated above 425 °F . In order to get 25-pound Per 100 square feet between plies, a 40 -ounce cotton mop when full and out of the mop bucket should not cover more area than a 3 -foot-wide swath 9 feet long.
d.Caulking. This work shall include all labor, materials, equipment and tools necessary for the proper gun or knife applied caulking wherever indicated and in all following locations:
1.Exterior joints between all metal and masonry.
2.Joints between roof and aluminum flashing.
3.Interior joints between hollow metal frames and wall tile. Mixing of the caulking shall be in strict accordance with the manufacturer ’s instructions. Working times listed by the manufacturer shall not be exceeded. Sealant application shall be as directed by the manufacturer , taking particular care to prepare the joints as directed. Metal surfaces to be sealed shall be bright metal clean before sealing. Window and door frames shall be cleaned before sealing. It is im perative that paint shall not remain on the surfaces to be sealed. Any joint showing sealant applied over paint will be cause for rejection of that complete joint.
622.17 Carpentry . The work under this heading shall include all labor, materials, equipment
and services necessary for the proper completion of all rough and finish carpentry.
a.Ceiling Panel Installation. Ceiling panels shall be fastened to gypsum board back up by use of adhesive and per the manufacturer ’s instructions. Each joint shall be concealed with colored aluminum moldings. Adhesive shall be applied over the entire back surface of each panel.
b.Preservation Treatment. All wood blocking under gravel stops and wood nailers shall be treated timber. 622.18 622-6 622.18 Interior Insulation . This work shall include all labor, materials, equipment and Services necessary for and reasonably incidental to the proper completion of all insulating work. Insulation for cavity walls shall be installed in the cavity after all excess mortar is cleaned from the face of the interior wall. Ties and insulation shall be pressed firmly together so that ties hold the insulation in place and ensure that the adjacent boards are butted tightly together. Cut ends shall be squared so that all joints will be tight. Asphalt emulsion shall be used, if necessary, to hold insulation against inner wall. Insulation to be applied to underside of roof shall be secured by using suitable fasteners common to the industry and recommended by the insulation manufacturer.
622.19 Glass and Glazing .
This work shall include the furnishing of all labor , materials, equipment and services necessary for and reasonably incidental to the proper completion of all glass and glazing work.
a.Installation. All glass shall be set in the best possible manner with polished side out and in such a way that there will be an equal bearing the entire width of each pane. All putty shall be left smooth and free from marks and other defects and shall be painted. Putty shall be an approved type suitable for glazing.
b.Cleaning and Replacing. Glass broken or damaged before completion of the building operations shall be replaced with glass of like kind and quality without cost to the Department . Upon completion of all construction work and approval of glazing, labels shall be removed and glass shall be cleaned.
622.20 Trash Receptacles . This work shall include furnishing of all labor, materials,
equipment and services necessary for the proper installation of trash receptacles. Receptacles with anchor shall be installed at locations shown on the plans.
622.21 Painting and Special Coating Application. This work shall include the furnishing of
all labor, materials, equipment , and services necessary for the proper completion of painting and finishing of all unfinished metal throughout the interior and exterior of the building and the information center. It also includes the application of special coatings on concrete tables, benches and underside and edges of roof. Colors and finishes shall be as specified on the plans. Sample panels to show proposed finish and color shall be prepared by the Contractor and approved by the Engineer before the painting work or special coating work is begun.
a.Paint Application. Paint shall not be applied to wet surfaces. Exterior surfaces shall not be painted during rain or snow, or when temperature is below 40 °F , or when conditions are not conducive to acceptable painting. All joints in plywood shall be sealed before paint is applied. Paint shall be spread evenly and smoothly without runs and sags. All metal surfaces shall be thoroughly cleaned of rust and shall be thoroughly washed with non- flammable solvent to remove any dirt or grease before applying paint. 622.22 622-7 Before painting or application of special coatings, all hardware, accessories, plates, lighting fixtures and similar items shall be removed, and protection of such items shall be provided. Only skilled mechanics shall be used for removing and connecting th e above items.
b.Paint and Special Coating Schedule.
1.Interior Metal. This metal is defined as, but not limited to, all hollow metal frames, doors and grills. Ductwork, electrical devices and conduit, stainless- steel items and plumbing fixtures and devices shall not be painted.
A.One field coat primer (omit this coat on previously primed surfaces).
B.Two coats enamel, flat finish, color to match interior walls.
2.Exterior Non -Galvanized Metal. This metal is defined as, but not limited to, all exterior metal including structural steel, but not including finish hardware, vent stacks, and metal soffits.
A.One field coat primer (omit this coat on previously primed surfaces).
B.Two coats house paint, flat finish, color to match stain used on Redwood.
3.Concrete Benches, Tables, Table Supports and Table Slabs. Two coats of sealant. Application shall be per the manufacturer ’s directions.
4.Exterior Wood.
A.Facing and fascia on buildings and information center shall be stained as scheduled on the plans.
B.Plywood soffit on buildings and information center shall have one coat white prime and two coats semi -gloss white enamel.
C.Information display board posts shall be stained the same as facing and fascia and the bulletin board shall have one coat white prime and two coats white paint, flat finish.
622.22 Plumbing and Drainage . This work shall include the furnishing, installation, and
testing of a system of plumbing and drainage as described, and as shown on the plans, including such minor details not specifically mentioned or shown as may be necessary to complete the system fo r successful operation. Also included in this work is the construction of the sewer line, which shall connect the building to the septic tank or treatment facility. Fixtures specified shall be of one make or type throughout the work. All work, materials and manner of placing materials shall be in strict accordance with the latest requirements of the Colorado Technical Plumbing Code.
a.Data and Measurements. Data contained in these specifications and shown on the plans are of general arrangement only. The Engineer shall determine exact locations, measurements, levels, etc., at the site and adapt the work to suit actual conditions.
b.Well Pump. The well pump shall be as shown on plans. The wells shall be equipped with a well seal and a liquid level control relay to stop the pump if the well water falls below a safe level. All related fittings, piping and electrical work for proper operation of the well is also included in this item. 622.22 622-8 (c) Drinking Fountains. Drinking fountains shall be the style and type called for on the plans.
d.Plumbing Installation. All fixtures and plumbing items shall be installed according to the manufacturer ’s recommendations complete with all necessary accessories and trimmings. All water supply connections shall have stops or shut off valves to facilitate maintenance. All waste connections shall be trapped and vented. Stops or shut off valves shall be so installed as to be readily accessible in the utility room. Immediately after fixtures are set, they shall be covered, and this cover shall not be removed until the building is prepared for occupancy. In addition, the Contractor shall furnish and install such guards and boxing as may be required to protect fixtures against damage by any other craft. The Contractor shall clean all fixtures with acceptable cleaning compounds before final acceptance of the work. The Contractor shall install all piping in such a manner as to allow complete drainage of the piping system. This requirement shall be met by pitching all lines to low points where valves or capped nipples in threaded tees shall be installed to drain the lines. These fittings, which are required specifically for draining the various lines, are not shown on the plans, since the number required and their locations must be determined by the field conditions encountered and are considered subsidiary to the work.
e.Testing Interior Drainage and Vent System. The waste drainage and vent system inside the building shall be tested and proved gastight and watertight before covering or concealment. The rough work shall be tested as a whole unit (as a whole stack or riser). Testing shall be conducted using water as the media under a hydrostatic head of at least 10 feet above the highest joint being tested. If the vertical distance is less than 50 feet to the top of the highest vent above the roof, the entire stack -riser shall be tested by filling to the top of the highest vent. Other media may be use d in lieu of water with the approval of the Engineer . Testing shall be continuous for at least 30 minutes’ duration for each separate test. At end of this time interval, there shall not be more than 3/4- inch drop in water level or not more than 1/16- inch drop in mercury level. If lines prove tight, concealment of rough work may begin. If repairs are required, retesting shall be conducted as often as necessary until lines are proved gastight and watertight to the satisfaction of the Engineer .
f.Testing Water Piping System. Upon completion of a section or of the entire hot - and cold- water piping systems, they shall be tested hydrostatically to a pressure of at least 50 percent in excess of the maximum pressure that the pipe will ordinarily be subjected, but not less than 100 pounds per square inch. Test shall not be less than two hours. Any leaks or defective pipe disclosed by the tests shall be repaired or replaced and the tests repeated until all piping shows tigh t. All water for tests shall be furnished and disposed of by the Contractor at his expense. Piping shall not be insulated or concealed until it has been tested to the satisfaction of the Engineer . 622.23 622-9 (g) Fixtures Substitution. When substitutions for specified fixtures are requested, the Contractor shall submit a portfolio containing illustrations and complete descriptions of the fixtures , for approval. Portfolios shall state the make and weight of the proposed fixtures, shall clearly indicate the materials that the fixtures are made, and shall otherwise clearly describe in detail the fixtures proposed to be substituted.
h.Air Chambers. Each water supply riser and fixture connection at all flush valves and lavatories shall terminate with an air chamber of diameter equal to the supply pipe and so located as to prevent water hammer. Approved shock absorbers may be substituted for air chamb ers.
i.Trenching and Backfilling for Water Lines and Sewer Lines. The Contractor shall perform all excavation and backfilling per Section 206. Trenches shall be only of sufficient width to provide a free working space and shall not be more than the outside diameter of the pipe bells plus 24 inches. They shall be dewatered and kept free from standing water until all joints are complete, the pipe t ested, and the trench backfilled. Backfilling around tanks may be puddled -in provided the tanks are first filled with water.
j.Sterilization of Water Systems. The completed piping system including the piping from the well shall be sterilized per the regulations of the Department of Public Health and Environment, State of Colorado and as follows: Before final acceptance, the entire water system shall be thoroughly flushed. After flushing, chlorine or chlorine compound shall be introduced into the system. The dosage shall be sufficient to give an initial residual chlorine mass fraction of 50 ppm. Samples shall be collected from various taps and fixtures throughout the systems during the introduction of the chlorine to assure uniform distribution. After a 24 -hour contact period, all traces of the heavily chlorinated water shall be flushed from the systems. After flushing is complete, the Contractor shall, at his expense, provide evidence of the effectiveness of the disinfection by filing with the Engineer , laboratory reports of bacteriological tests on samples taken from the system. The number and the locations for taking samples shall be as specified by the Engineer. Should other than satisfactory results be obtained, the above disinfection process shall be repeated until satisfactory tests are obtained.
k.Cleaning and Adjusting. At the completion of the work and before final acceptance, all parts of the work installed under this specification, all equipment , fixtures, pipe, valves and fittings shall be thoroughly cleaned of grease, oils, metal cuttings, and sludge, etc., that may have accumulated by operation of installing these systems, of testing, or from other causes. Stoppage or discoloration or other damage to parts of the building, its finish or furnishing, due to failure of the Contractor performing the plumbing work to properly clean the piping system, shall be repaired at the Contractor’s expense.
622.23 Heating and Ventilation . This work shall include furnishing and installing all units and
duct work as set forth in the heating plans and installing the minor items necessary to complete the work outlined below: The Contractor shall provide and install all other items, such as wiring, thermostats, sheet metal work, that are necessary for a complete and operating system. 622.24 622-10 (a) General. All exhaust fans, duct work, outlets, inlets, thermostats, grills, vents, electrical wiring, plumbing, etc., shall be new. Standard products of manufacturers regularly engaged in production of such equipment shall be as shown in the manufacturer's latest catalogue.
b.Wall Heater, Exhaust Fans, Furnace and Duct Installation. Wall heaters, exhaust fans, furnace and duct work shall be installed as shown on the mechanical plans. The fresh air duct shall be provided with a close -fitting damper to vary the volume, or completely shut off the fresh air supply. For normal operation , the fresh air damper should be adjusted to take in a maximum of 20 percent fresh air with the remainder being re -circulated to the furnace through the return air grills. The fresh air duct shall run between the joists from the intake grill to above the fu rnace, and down to the return air plenum. A return air grill shall be installed in the return air plenum to pass re -circulated air to blower. Both fresh air duct and return air grill shall be installed so that all return air will pass through the furnace f ilters. The fresh air damper shall be manually operated.
622.24 Electrical Work . All electrical wiring shall be installed in conformance with the
National Electrical Code and the National Electrical Safety Code. These specifications and plans cover the furnishing and installation of a system of electric wiring and conduit and box work as described and as indicated on the plans of the building, and outdoor lighting including such minor details not specifically mentioned or shown as may be necessary to complete the system for a complete turnkey operation. The Contractor shall, at the Pre -construction Conference or within 14 days after award of Contract, submit to the Engineer a complete list of electrical materials being propose d to furnish and install on the Contract. Five copies of the list, including manufacturer and catalogue numbers of devices and fixtures, shall be furnished per subsection 622.03.
a.Symbols. Items of equipment and materials are indicated on the plans per the legend of symbols shown on the plans.
b.Conduit. All conduit shall be installed in conformance with the National Electrical Code. All conduit runs shown are diagrammatic. Exact locations will be determined in the field.
c.Position of Outlets. Outlets shall be located as shown on the plans or as directed.
d.Conductors. Conductors shall conform to the requirements of the National Electrical Code.
e.Thermostat. A separate thermostat shall control the furnace so that the furnace or wall heaters will operate when the temperature drops to the thermostat setting. A separate thermostat shall operate the emergency light to signal when the temperature in the building drops to a set temperature. Line voltage wiring complete in conduit shall be provided for this system.
f.Emergency Light. Low voltage wiring, not in conduit, shall be provided for this circuit to the emergency battery charger.
g.Emergency Battery Charger. The emergency light shall signal power failure and temperature drop in the building to below a pre -set temperature. Power failure or temperature drop below set temperature shall cause emergency battery charger to energize the emergency light. Upon correction of the emergency condition, the battery charger shall turn off emergency light and keep the batteries charged automatically by use of line current. 622.25 622-11 (h) Photoelectric Control. Photoelectric cells shall be located and mounted as indicated on the plans.
i.Disconnect Switches. The Contractor shall furnish and install disconnect switches for means of disconnecting appliances at the location shown on the plans.
j.Circuit Breakers. All electrical devices shall be protected by circuit breakers located in the main breaker panel. The circuit breakers shall be per the National Electrical Code.
k.Grounding. All equipment and conduit shall be grounded per the National Electrical Code requirements. Code color shall be adhered to for all ground conductors and ground continuity shall be positive throughout the entire project.
l.Incoming Service. The Contractor shall furnish, install and connect the incoming service cable from the local utility company service pole to the building. This cable shall be as specified under conductors and shall be buried at the location shown on the plans. Details of the connections to the local utility company poles are not shown on the plans. The Contractor shall furnish and install all material and equipment required to make these connections in conformance with utility company recommendations. Materials required to make these connections shall be considered subsidiary to the electrical systems.
m.Installation. Where sizes are not indicated or shown on the plans for junction boxes, a 4 - inch square galvanized junction box with blank cover shall be used. Mounting heights above finished floor shall be as indicated below, unless otherwise shown on the plans or indicated in these specifications. All mounting heights shall be verified by the Engineer . Table 622 -1 ELECTRICAL WORK MOUNTING HEIGHTS ABOVE FINISHED FLOOR (A.F.F.) Switches 48 inches Convenience Outlets 48 inches Panel to Center 54 inches Lighting Fixtures as shown on plans
622.25 Sanitary Sewer, Septic Tank, Leaching Field, Sewage Lift Station and Sanitary
Station . This work shall include all labor, materials, equipment and services necessary for the installation of a sewer system including septic tank, leaching field and associated sewage piping as required for the comfort station, trailer pad and the trailer sanitary station, as shown on the plans and described as foll ows: A sewage system shall be constructed, as shown on the plans or as directed, for each building. A precast septic tank shall be installed for each trailer sanitary station and trailer pad as shown on the plans. Each septic tank shall be vented. The septic tank required for the building may be cast -in-place or may be a precast unit or precast units in tandem of the capacity indicated on the plans. 622.26 622-12 Treatment plant and polishing tank or pond required for the building shall be installed as shown on the plans, or as directed. Sewage lift station and wet well shall be installed as shown on the plans. Leaching fields shall be constructed to the dimensions and details shown on the plans or as directed.
622.26 Flagpole. Flagpole shall be of the type and style specified and shall be installed as
shown on the plans. METHOD OF MEASUREMENT
622.27 The quantities to be measured under this Section will be the actual number of pay
units, completed and accepted, of the various pay items that appear in the bid schedule, comprising the rest area, or other buildings. All electrical work for the building including service from meter pole, shall be included as part of the building that appears in the bid schedule. All electrical work for the information center shall be included as part of the information center. Area lighting will be measured and paid for as luminaires, light standards and wiring per Section 613. Shade shelter item shall include table and benches. Septic tank, sewage lift station or treatment plants shall include the related mechanical devices and fittings and the sewer piping from the tank to the leaching field, wet well polishing tank or polishing pond. Sewage lift station shall also include the w et well. Sewer piping, fittings, devices, etc., from the septic tank, treatment plant or sewer to the building, sanitary stations or trailer pad shall be included as part of the building, sanitary station or trailer pad. Sewer piping from sewage lift station to point of discharge will be measured and paid for per in Section 619. Polishing tanks or polishing ponds shall include all related pipe and fittings. Sewage leaching field shall include all work associated with the leaching field. Measurement will be based on the square yards of leaching field trench excavated or linear foot of perforated pipe installed. Trailer sanitary station shall include the water tower, hatch with cover, vacuum breaker, related fittings, sewer pipe to septic tank , and water line connections. Storage tank shall include all controls, fittings and piping from the tank to the building and, unless otherwise stipulated, shall also include all controls, fittings and piping from the water source to the storage tank. Trailer pad shall include water service valve and riser, electrical pedestal, intercom connection, and sewer pipe to septic tank. Drinking fountains except for those on or in the buildings will be measured by the units installed and accepted. 622.28 622-13 Well pump shall include the pitless adapter, seal, electric controls, and all related pipe and fittings. Flagpole shall include halyard, swivels, cleats, ornamental ball and base. BASIS OF PAYMENT
622.28 The accepted quantities will be paid for at the contract unit price for the various items
listed below that appear in the bid schedule. Payment will be made under: Pay Item Pay Unit Information Sign Board Each Information Center Each Shade Shelter Each Table Each Trash Receptacles Each Drinking Fountain Each Trailer Pad Each Well Pump Each Sewage Lift Station Each Comfort Station Each Trailer Sanitary Station Each Leaching Field Square Yard Leaching Field Linear Foot Septic Tank (____Gal.) Each Storage Tank (____Gal.) Each Sewage Treatment Plant (____Gal.) Each Polishing Tank (____Gal.) Each Scale Pit and Approach Slabs Each Flagpole Each _____Building Each 622.28 622-14 THIS PAGE INTENTIONALLY LEFT BLANK 623.01 623-1 SECTION 623 IRRIGATION SYSTEM DESCRIPTION
623.01 This work consists of furnishing and constructing an irrigation system per these
specifications and in conformity with the lines and grades shown on the plans or established. MATERIALS
623.02 General. All materials and equipment incorporated into the irrigation system shall be
new and of recognized standard quality. In the case of computer software or hard coded instructions, the latest available version from the manufacturer is required. All materials shall be of a standard line from a name brand manufacturer or must be approved .
623.03 Backflow Preventer . Pressure vacuum breakers shall be the pressure type with a
bronze body and a machined valve seat. Reduced pressure -type backflow preventers shall include two check valves, a relief valve, two gate or ball valves, and test cocks for field testing. Vacuum breakers and reduced pressure- type backflow preventers shall meet the requirements in the Colorado Department of Health, Cross Connection Manual, and shall have a non -shock cold-water rating of at least 150 psi.
623.04 Automatic Controllers . The automatic controller shall be an electro -mechanical or
microprocessor based/microelectronic solid -state type capable of operating in an automatic or manual mode. The controller shall have a minimum of six stations. Each station shall be programmed to operate for 1 to 99 minutes, or 0.1 to 9.9 hours. The controller shall have two independent programs with three automatic starts per day for each program. Each station on the controller shall be assigned to either or both programs. The controller shall b e capable of watering any day or sequence of days on a six or seven -day cycle. The controller shall operate on a minimum of 117 volts AC power input. Controller electrical output shall be capable of 26.5 volts AC at 1.5 amps. The controller shall have a reset circuit breaker (1.5 amps holding and 2.5 amps break) to protect it from power overload. Primary surge protection for 117- volt lines and valve (24 volt) output surge protection shall be installed to protect the controller. The automatic controller shall be grounded using two 5/8- inch x 8-foot copper clad grounding rods driven into the soil. A #10 AWG bare copper wire shall be used to connect the ground rods to the automatic controllers’ protective grounding circuit. The resistance of the ground shall not exceed 5 ohms. The controller enclosure (including satellite controllers) shall be of a vandal and weather - resistant nature, manufactured entirely of metal or steel mill- treated with zinc for rust resistance. The main housing shall have louvers in the upper and lower bod y to allow for crossflow ventilation.
623.05 Remote Control . Remote control shall consist of an FM, AM, UHF , or VHF radio
transmitter/receiver pair with a minimum range of one mile in congested areas and shall include battery charger and replacement battery. The receiver shall plug into a receptacle installed in the enclosure or panel of the automatic controller. Remote control shall be capable of turning on/off any station in any order. Remote control shall comply with all applicable FCC rules and regulations.
Source: Colorado Standard Specifications for Road and Bridge Construction, 2023 Edition. Pages 737–750 of 943.