DESCRIPTION
604.01.01 General. This work consists of furnishing and installing corrugated metal pipe, corrugated metal arch
pipes, and slotted corrugated metal pipe, and the relaying of old corrugated metal pipe and pipe arches. MATERIALS
604.02.01 General. Material shall conform to Subsection 601.02.01 and the requirements specified herein.
Corrugated metal pipe plate thickness determinations shown in the plans are based on steel pipe wit h 68 mm (2 2/3 in.) by 13 mm (1/2 in.) corrugations as indicated on the plan sheet entitled, “Allowable Fill Heights for Steel Culverts.” The following pipes, conforming to the fill height tables shown in the plans, may be substituted for the 68 mm (2 2/3 in.) by 13 mm (1/2 in.) corrugated steel pipe:
a.Corrugated steel pipe with 75 mm (3 in.) by 25 mm (1 in.) or 125 mm (5 in.) by 25 mm (1 in.) corrugations.
b.Helical rib lock seam pipe (steel or aluminum) with 19 mm (3/4 in.) by 19 mm (3/4 in.) ribs at 190 mm (7 1/2 in.) or 19 mm (3/4 in.) by 25 mm (1 in.) ribs at 292 mm (11 1/2 in.).
c.Corrugated aluminum pipe with 68 mm (2 2/3 in.) by 13 mm (1/2 in.), 75 mm (3 in.) by 25 mm (1 in.), or 150 mm (6 in.) by 25 mm (1 in.) corrugations. Furnish the s ame type of pipe and end sections at each individual location. Fabricate the pipe and all accessories of the same material. Plate thicknesses for coupling bands shall be as indicated in the plans. Furnish metal end sections conforming to the details and dimensions shown on the plans and, except for shape, conforming to the requirements for corrugated metal pipe. The following requirements pertain to the use of metal end sections:
a.Finish the end of the new pipe with annular corrugations to conform to the metal end section.
b.Use annular connector sections with new pipe.
c.Use helical or annular connector sections to match existing pipe. Ship and handle pipe in such a manner as to prevent bruising, scaling, or breaking of the galvanized coating. Repair any damaged galvanized coating in conformance with AASHTO M36. Repair may also be by thoroughly wire brushing the damaged area, removing all loose and cracked galvanized coating and painting with 2 coats of zinc oxide- zinc dust paint conforming to MIL-P-15145. Properly compound the paint in a suitable vehicle in the ratio of 1 part zinc oxide to 4 parts zinc dust by weight. CONSTRUCTION
604.03.01 General. Use construction methods conforming to Subsections 601.03.01 through 601.03.06 and
the requir ements in this Section .
604.03.02 Laying Culvert Pipe. Lay pipes upgrade. Lay pipe with outside laps of circumferential joints upgrade
and longitudinal laps positioned other than in the invert. Place elongated pipes with major axis within 5° of vertical. Join sections together with coupling bands bolted firmly in place. Vertically elongate pipes 5% ± 1.25% before placement of fill. Elongate by approved jacking methods in the field or by prefabrication. Strutting of prefabricated elliptical pipe will not be required. 604 CORRUGATED METAL PIPE AND METAL ARCH PIPE Strut uniformly from end to end of pipes where headwalls are not used. When headwalls are used, the amount of jacking and the length of struts may be reduced gradually under the side slopes of the embankment so that the ends of pipe at headwalls are circular. Leave the struts in place until the embankment is complete and compacted. Lay pipes true to the designated line, grade, and camber. Fit and match pipes to form a smooth and uniform invert. Use care in fitting sections of pipes together so that the joint openings will not be unnecessarily large.
604.03.03 Siphons. Close rivet and solder corrugated metal pipe for use as siphons and so fabricate as to
require a minimum number of field connections. Space rivets on circumferential s eams at approximately 63 mm (2 1/2 in.) centers with a maximum spacing of 75 mm (3 in.). Solder the circumferential and longitudinal seams on the outside of the pipe where the edges of the sheets lap. Sweat solder into the joints by means of a torch proper ly regulated for the purpose. Do not use soldering irons on factory seams. Siphons shall also conform to the requirements for corrugated metal pipe culverts of this Section. Use approved watertight couplings for field joints. To permit coupling bands to fit snugly into the corrugated ends of the pipe, omit rivets in the longitudinal seam and adequately solder. Clean the ends of the pipe and the bands and install the gasket or mastic sealant material. Completely fill the siphon with water and repair any leaks before backfilling.
604.03.04 Slotted Drains. Place slotted corrugated metal pipe drains flush with the pavement surface as
indicated on the plans. Install the slotted drain flush with the top of the dense- graded bituminous surface before placing open -graded wearing course. Saw cut pavement or cut pavement by approved means that will leave a clean, true vertical edge. Backfill the slotted drain with concrete as indicated on the plans. Place concrete neat (without forms) against the walls of the exca vation. METHOD OF MEASUREMENT
604.04.01 Measurement. Measurement shall conform to Subsection 601.04.01 and the requirements specified
herein. Corrugated metal pipe will be measured by the linear meter (linear foot). Metal end sections will be measured by the each. Slotted corrugated metal pipe drain will be measured by the linear meter (linear foot). Structure excavation and concrete backfill will not be measured for payment on slotted corrugated metal pipe drains. BASIS OF PAYMENT
604.05.01 Payment. Payment shall conform to Subsection 601.05.01 and the requirements specified herein.
The accepted quantities, measured as provided above, will be paid for at the contract price per unit of measurement for the pay items listed below that are shown in the proposal. Payment will be full compensation for the work prescribed in this Section. Payment will be made under: Pay Item Pay Unit (size) Corr. Metal Pipe (*) ................................................................................................................................. Linear Meter (Linear Foot) (size) Corr. Metal Pipe (*) Jacked ................................ ..................................................................................... Linear Meter (Linear Foot) (size) Corr. Metal Arch Pipe (*) ......................................................................................................................... Linear Meter (Linear Foot) (size) Metal End Section ................................................................................................................................................................... Each (size) Metal End Section ( Safety Type ) ................................ ............................................................................................................. Each (size) Metal Arch End Section ................................ ................................ ........................................................................................... Each (size) Metal Arch End Section ( Safety Type) ..................................................................................................................................... Each (size) Slotted Corr. Metal Pipe Drain (*) ................................ ................................ ............................................ Linear Meter (Linear Foot) * Plate thickness SECTION 605 PLASTIC PIPE DESCRIPTION
605.01.01 General. This work consists of furnishing and installing plastic pipe.
MATERIALS
605.02.01 General. Material shall conform to Subsection 601.02.01 and the requirements specified herein.
Plastic pipe shall conform to Subsections 708.03.04 (a) Smooth Wall Polyethylene Pipe and (b) Corrugated Polyethylene Pipe. Pipe shall be homogenous throughout an d free of visible cracks, holes , foreign inclusions, or other defects. The pipe shall be uniform in color, opacity, density, and other physical properties. Compliance with the requirements of these specifications shall be certified in writing by the pipe supplier. The dimensions of pipe shall be as shown on the plans and are in reference to nominal diameter unless otherwise indicated. Provide associated fittings that properly fit the pipe supplied. Provide pipe and fittings free from defects which would hinder their ability to function as designed. CONSTRUCTION
605.03.01 General. Use construction methods conforming to Subsections 601.03.01 through 601.03.06 and
the requirements in this Section. Stockpile, handle, install, and firmly join pipe as specified by the manufacturer . Submit a copy of the manufacturer’s installation instructions prior to installation. Lubricate gaskets requiring lubricant with the lubricant recommended by the manufacturer. Pipe having any of the following damage will not be allowed for use: serious abrasion, cutting, or gouging of the inside or outs ide surface extending to more than 15% of the wall thickness in depth; kinking due to excessive or abrupt bending; flattening, particularly if localized over short lengths of the pipe amounting to more than 5% of the original diameter; and any abrasion or cutting of the inside surface.
605.03.02 Laying Pipe. Pipe laying shall begin at the downstream end of the pipeline except for extensions of
existing pipes. Carefully lower pipe and accessories by means of derrick, ropes, belt slings, or other means per manufacturer’s recommendations. Place the bottom of the pipe in contact with the shaped bedding throughout its full length. Place the female ends or outside circumferential laps of pipes facing upstream such that a shingling effect is obtained. Maintain the manufacturer’s recommended minimum and maximum cover at all times unless otherwise shown in the contract. All pipe to pipe connections shall be bell and spigot, interlocking, or fusion welded connections for watertight installation. Watertight connections to drop inlets, metal end sections, box culverts, and other structures are not necessary unless specified. When specified, w ater tight connections to structures shall be made using a waterstop gasket or booted connection precast into the struc ture per manufacturers recommendations. Any repair or other connections of pipe to pipe which cannot be performed with an approved connection as listed above, shall require a concrete collar connection, approval of the Engineer, and shall maintain proper a lignment and grade across the joint without displacement of pipes. The minimum pipe section length at the end of a pipe run terminating with a metal end section or headwall shall be 2.4 m ( 8 ft). Cut corrugated pipe to length at the center of nearest corrugation valley so as to not expose the annular space of the outer corrugation. Do not place backfill until the pipe has been inspected. Ensure that no “floating” occurs during installation of culverts. Take up and relay or replace pipe found to be out of alignment, unduly settled, or damaged. When cutting s teel reinforced thermoplastic ribbed pipe, cut the pipe to length and protect the exposed reinforcing according to the manufacturer ’s specifications .
Source: Nevada Standard Specifications for Road and Bridge Construction, 2014 Edition. Pages 327–328 of 610.