SECTION 9.00 : MEASUREMENT AND PAYMENT Subsection 9.01 : Measurement of Quantities The quantities of the various items of work performed shall be determined for purposes of payment by the Engineer and by the Contractor for the purposes of certification(s) of work performed that are generally required by law and specifically by the provision hereof. Upon the completion of the work and before final payment is made the Engineer will make final measure-ment to determine the quantities of the various items of work performed, as the basis for final settlement. All measurements shall be made according to th e United States standard units of measurement. The method of measurement and computations to be used in determination of quantities of material furnished and of work performed under the Contracts shall be selected by the Engineer. Longitudinal measurements for area computations will be made horizontally, and no deductions will be made for individual fixtures having an area of 9 ft² or less. T ransverse measurements for area computations will be the neat dimensions shown on the plans or ordered in writing by the Engineer. Structures will be measured according to neat lines shown on the plans or as altered to fit field conditions. All items which are measured by the foot, such as pipe, culverts, guardrail, underdrains, etc., will be measured parallel to the base or foundation upon which such structures are placed . In computing volumes of excavation the average end area method or other methods acceptable to the Engineer will be used. When the term “gage” refers to the measurement of wire, it will mean the wire gage specified in the AASHTO M 32M/M 32 . All materials which are specified for measurement by weight shall be weighed on standard scales fur-nished by and at the expense of the Contractor. Such scales shall be sealed at the expense of the Contractor as often as is necessary to insure their accura cy. A sworn weigher to be compensated by the Contractor shall weigh all materials required to be weighed as above provided. The weighing of such materials may be witnessed by the Engineer. If materials are shipped by rail or trucks, the car weights or quar ry weights may be accepted, but scales shall be used as above, if so directed. Weight slips shall be provided for each shipment of material weighed. Each weight slip shall be signed by the sworn weigher. The weight slips shall be counter-signed on delivery by the Engineer and no weight slip not so countersigned shall be included for payment under the Contract. When requested by the Contractor and approved by the Engineer in writing, material specified to be measured by the cubic yard may be weighed and such weights will be converted to cubic yards for payment purposes. Factors for conversion from weight measurem ent to volume measurement will be determined by the Engineer and shall be agreed to by the Contractor before such method of measurement of pay quantity is used. The term “lump sum” when used as a unit of payment will mean complete payment for the work described in the Contract. II.374 202 4 Edition SECTION 800 : TRAFFIC CONTROL DEVICES SUBSECTION 801: CONDUIT, M ANHOLES, HANDHOLES, PULL BOXES AND FOUNDATIONS DESCRIPTION
801.20: General
The work under this section shall consist of furnishing and installing and/or constructing the following in accordance with the requirements of the specifications, as directed on the plans and as directed by the Engineer.
be 3 -in. nominal size.
used for all underground runs. When Type NM Electrical Conduit is specified either of the Types NM Electrical Conduit listed under M5.07.0: Electrical Conduit -Rigid Nonmetallic (Type NM) may be used in the work, at the option of the Contractor, but only one type shall be used throughout any one contract.
used for all above ground runs and where augured or jacked conduit is required. When specified for underground use or to be encased in concrete, conduit shall be plastic coated or manufactured from metal inherently resistant to corrosion.
and special applications are required.
runs over 150 ft in length, where there is an abrupt change in direction, grade or elevation, to provide a direct one conduit entrance for wire and cable into signal, mast arm or strain pole foundations, and as directed by the Engineer.
posts, mast arms, strain poles and control cabinets . II.375 202 4 Edition MATERIALS
801.40: General
Materials shall meet the requirements specified in the following Subsections of Division III, Materials: Cement and Cement Concrete Materials ............................................................................ M4 Pipe, Culvert Sections, Conduit and Fittings, Pull and Junction Boxes .................. M5 Paint and Protective Coatings ................................................................................................ M7 Metal, Related Materials, Cast Iron Frames and Covers .............................................. M8 Gravel ................................................................................................................................................ M1.03.0, Type c Metallic pull and junction boxes may be cast iron, welded sheet steel or cast aluminum, with gasketed covers securely fastened with monel or stainless steel screws that will, with cover in place, be watertight. Cast iron or sheet steel boxes shall be hot dipped galvanized conforming to the applicable portions of ASTM A153. CONSTRUCTION METHODS
801.60: Conduit
The conduit sha ll not be placed until after the gravel subbase for the roadway has been constructed and the rolling thereof has been completed. The trench for a single conduit line shall be excavated to a width of 18 in . to a depth not less than 36 in. below the proposed grade of the finished pavement as shown on the plans. Whenever 2 or more conduit lines are to be laid in the same trench, the trench shall be excavated to the width shown on the plans or as specified in the Special Provisions. If the co ndition of the bottom of the excavated trench is wet, clayey or spongy, or otherwise unsatisfactory, the Engineer may require that the bottom of the trench be excavated deeper and the space filled with clean gravel to form a firm bearing for the conduit. The gravel shall be firmly compacted in layers not over 6 in. in depth. The grade of the finished trench shall be parallel to the proposed pitch of the traffic conduit or duct. Existing pavements shall be sawcut in accordance with the requirements of Subsection 482: Sawcutting as shown on the plans and as required by the Engineer.
After the trench has been excavated to the proper width and depth as specified above, a gravel foundation 6 in. in depth shall be constructed on the bottom of the trench to provide a proper cushion for the conduit. This cushion of gravel shall be thoroughly tamped.
All conduit lines shall be direct from one end to the other, no bends being allowed except when entering a pull box or signal base. Whenever 2 or more conduit lines are to be laid in the same trench, the conduits shall be separated from each other by a minimum distance of 3 in. II.376 202 4 Edition D. Joints. All joints shall be made in accordance with conduit or duct manufacturer's recommendations, NEMA, UL and the MEC.
Dead ends of conduit lines shall be plugged with wooden, plastic or fibre stoppers. To mark the ends, sections of 2-in. by 4-in. studs, long enough so as to project above the surface of the ground after the trench has been backfi lled, shall be set vertically before the backfill is placed. For single conduit lines, the stud shall be butted directly against the stopper in the end of the conduit. Where 2 or more conduit lines converge to a common point, each line shall be ended 2 ft from the common point of in tersection and a stud set up at this point. Backfill shall not be placed until the Engineer has established the necessary ties to the studs.
All Type NM Conduits or ducts marked “X” on the plans shall be encased in a concrete envelope as shown on the Standard Drawings.
Gravel fill shall be made around the sides of the conduit and over it for a depth of 3 in . and thoroughly tamped. A plank of spruce, fir, hemlock or other satisfactory wood, about 6 in . wide and 2 in. thick, (nominal dimensions) shall be placed over this gravel and the filling of the trench with suitable materials in layers of not over 6 inches, compacted thoroughly, shall be completed. If Extra Heavy Wall (Schedule 80) Conduit is selected as an option for Rigid Non -Metallic Conduit, an approved underground warning tape may be substituted for the 2 -in. by 6 -in. plank.
After the trench is backfilled, the Contractor shall, in the presence of the Engineer, test the installation by pushing or pulling through the entire length of the conduit line a rod, rope or fish tape on the end of which is attached a brush and ball with a diameter not smaller than ¼ in. less than the inside diameter of the conduit. All obstructions, including stones, dirt, concrete, etc., shall be removed, and damaged conduits shall be replaced at the expense of the Contractor.
When a trench has been cut across a paved surface, the trench shall be bridged with a 6- in. concrete slab as shown on the Standard Drawings. When jacking or drilling methods are specified for placing conduits under existing pavements, pavement shall not be disturbed without the approval of the Engineer. In the event obstructions are encountered, upon approval of the Engineer, small test holes may be cut in the pavement to locate the obstructions. Jacking or drilling pits shall be kept 3 ft clear of the edge of any type pavement wherever possible.
Conduit system on structures shall consist of furnishing and installing all material and equipment and performing all work necessary for a complete conduit system. The type of conduit shall be as II.377 202 4 Edition designated on the plans conforming to the requirements of M5.07.1: Electrical Conduit- Rigid Metallic (Type RM). All conduit bends shall be made in a neat and workmanlike manner. crushed or deformed conduit shall not be used. Conduit ends shall be reamed to remove all burrs, and all chips resulting from reaming removed from the conduit before installation. The ends of all conduit runs shall be protected by grounding bushings and be capped if wire and cable is not to be installed immediately. Conduit shall be held rigidly in place to prevent misalignment during placing of concrete. Reinforcing bars shall not be cut, bent, displaced or otherwise altered from that shown on the design plans. One manufactured expansion fitting (made of material compatible with the conduit) shall be used for each conduit run on structures at every expansion joint of the structure, unless flexible metallic conduit loops or bends are stipulated. Clamps or hangers shall be provided at intervals not exceeding 5 ft . Conduit runs shall be made with the minimum practicable number of bends. The total of the angles of bends between junction or pull boxes shall not exceed 270 °. So far as practicable, all bends shall be formed by the use of factory standard radius elbows. For metal conduit, where special angles of bends or offset bends are required. they may be formed to a radius of not less than 6 times the nominal inside diame ter. provided the bend is made on a pipe bending machine. Field bends may be made by the use of a conduit bender forming curves the minimum radius of any portion of which shall not be less than 12 times the nominal inside diameter. Short radius bends shall be accomplished by the use of junction boxes or special condulets. Hot bends or other methods of bending which will destroy the protective coating on the metal conduit will not be permitted. Conduit in which the cross -sectional area has been reduced or which contains sharp kinks will be rejected. Conduit shall be continuous from outlet to outlet: however. the runs may be interrupted by condulets placed for the purpose of pulling conductors or making short radius bends. All metal conduit shall be cut square the ends internally reamed and threaded the proper length and assembled at all fittings in proper manner so that all joints will be mechanically secure, water tight, and provide electrical continuity. All threaded connections shall be given a coat of pipe joint compound before fitting up. The ends of field cut joints on non -metallic conduit, except plastic, shall be tapered to conform to factory ends. The sections shall be joined at couplings and fittings by tapping the ends of sections sufficiently to provide water tight joints without ove r stressing or cracking the fittings. Where non - metallic conduit is joined to metallic conduit. special tapered and threaded non -metallic adaptors shall be used. When fitting -up compound is specified for non -metallic conduit the compound shall be of a type which will remain plastic during assembly and set within a reasonable period thereafter. The compound shall be carefully painted on joints so that excess compound will not intrude on the inner surface of the conduit after assembly. All junction boxes shall be of sufficient size to provide for proper splicing and packing of all conductors, plus additional space for a future increase of 50% in the number of conductors or conductor size. All unused openings in boxes and fitting shall be closed by tight metal plates or plugs and all dead ends of conduit , except where provided for drainage , shall be fitted with pipe caps. All terminal ends of conduit not ending in boxes or condulets shall be fitted with rubber bused caps containing the required number and size of holes to tightly fit the conductors running through, or fitted with, standard water tight terminal fittings or p ot-heads. II.378 202 4 Edition Where an obstruction may have developed in any conduit run it shall be removed, if practicable. If the obstruction is not removed the affected portion of the conduit system shall be removed and replaced with new, clean conduit or, if this cannot be accomplished, an entire new conduit shall be placed around the affected section at a location selected by the Engineer. All conduit encased in concrete shall be rigidly held in proper position during concrete placement. Non-metallic conduit shall be secured against separation at the joints during concrete placement by being tied to a separate steel rod at least ½ in. in diameter running the full length of the conduit. Such rod and ties shall be considered as parts of the electrical installation. Provisions for adequate drainage shall be made in all conduit systems. Horizontal runs shall be slightly pitched and unless completely sealed against moisture. All low points shall be drained. Conduit shall be adequately supported by sleeves, fixed boxes, hangers, clamps or anchorages placed at intervals not exceeding 5 ft. Anchor bolts which are indicated on the plans as set in concrete shall be placed in the proper location before placing concrete. Condulets, pull boxes, junction boxes and caps shall be of galvanized cast or malleable iron, of the threaded connection type with cast waterproof covers fined with moisture proof gaskets. The covers of junction boxes which house transformers or cutouts shall be attached to the box by hinges or chains. Conduit or raceway sleeves shall be placed during construction of the portions of the structures in which they are located. They shall be maintained in a clean condition and protected from damage or obstruction by placing removable plugs or caps until read y for use. In general, exposed conduit shall not be placed until all adjacent construction work has been completed. Portions of conduit to be encased in masonry, or boxed in between structural members, shall be placed in advance of placing concrete or during assembly of structural members and protected from damage and plugging by use of covers or tight fining metal caps.
801.61: Electric Manholes, Handholes, Pull Boxes and Junction Boxes
Electric manholes, handholes, pull and junction boxes shall be built to the lines, grades, dimensions and designs shown on the plans or Standard Drawings with the necessary frames, covers, etc., in accordance with the applicable provisions of Subsection 201: Basins, Manholes and Inlets .
After excavation, all loose material shall be removed before the forms are installed. All conduits, ground rods, pulling irons and reinforcing steel shall be installed rigidly in place before the concrete is placed. After the concrete for the manhole, handhole or pull box is placed , and forms removed, all exposed portions of the concrete shall be neatly finished. Frame castings shall be set according to the requirements of 201.63: Placing Castings .
The construction methods for pre -cast concrete units shall conform to the relevant provisions of Subsection 901: Cement Concrete , M4.02.14: Precast Units , and the above 801.61: Electric Manholes, Handholes, Pull Boxes and Junction Boxes , Paragraph B. II.379 202 4 Edition D. Metallic Units. Metallic pull and junction boxes shall be installed at the approximate locations shown on the plans, or in long conduit runs, they shall not be spaced over 150 ft from each other. It shall be in the option of the Contractor, at their expense, to install additional pull or junction boxes that they may desire to facilitate their work. Pull or junction boxes installed shall not be of dissimilar metal to the metal conduit used in any one electrical system.
801.62: Foundations
Light standard, Iighting load center, signal post, strain pole, signal mast arm and signal control cabinet foundations, shall be constructed with the necessary anchor bolts (supplied under the items listed in Sub