RE INFORCED CONCRETE PIPE DE SCRIPTION 603.
01.01 General. This work consists of furnishing and installing circular or oval shaped reinforced concrete
pipe, siphons, and end sections. M ATERIALS 603.
02.01 General. Material shall conform to Subsection 601.02.01 and the requirements specified herein.
C ircular reinforced concrete pipe shall conform to AASHTO M170 for the specified diameters and strength classes. O val reinforced concrete pipe shall conform to AASHTO M207 for the specified rise and span for either vertical or horizontal elliptical pipe classes. F lared end sections (precast) shall conform to the details and dimensions shown on the plans and except for shape, shall conform to the requirements of this Section for reinforced concrete pipe. T ongue and groove j oints and gasketed joints shall conform to Subsection 707.03.02. C ompose mortar of 1 part Portland cement and 2 parts mortar aggregate by volume. Add only enough water to permit placing and packing of the mortar. A dmixtures of hydrated lime, fire clay, diatomaceous earth, or other approved inert material may be used in the mortar to facilitate workability. Only add an approved amount of admixture. CO NSTRUCTION 603.
03.01 General. Use construction methods conforming to Subsections 601.03.01 through 601.03.06 and
the requirements in this Section . C arefully handle concrete pipe in unloading, transporting, and laying. D o not lay pipe which is cracked, checked, spalled, or damaged. Pipes which show defects due to handling will be rejected at the site of the installation regardless of prior acceptance. 603.
03.02 Earthwork. When pipe having bells is used, excavate cross trenches for the bells to prevent
nonuniform loading of the joints. Make the cross trenches not more than 50 mm (2 in.) wider than the width of the bell. 603.
03.03 Laying Culvert Pipe. Suitably mark pipe with elliptical reinforcing to clearly indicate the top and
bottom of the pipe. F irmly place the first section of pipe at the outlet to the designated line and grade with the groove end or bell end pointing upgrade. Completely fill all handling holes in the pipes with grout. P ipe shall be installed with tongue and groove joints or gasket ed joints . Pipe specified to have watertight j oints shall be installed with gasketed joints . I nstall pipes, sealants , and gaskets as specified by the manufacturer. Submit a copy of the manufacturer’s installation instructions prior to installation. Lubricate gaske ts requiring lubricant with the lubricant recommended by the manufacturer. C ompletely fill the outer and inner annular space between the laid pipe sections with mortar. Mortar will not be required if the space is 6 mm ( 1/4 in.) or less in width or the pipe diameter is less than 600 mm (24 in.) . Where reinforced concrete collars or bells are used at the pipe joints, mortar will not be required in the outer annular space. Brush mortar smooth and remove all surplus mortar from inside the pipe. 603 REINFORCED CONCRETE PIPE
603.03.04 Siphons and Pressure Pipe. Lay reinforced concrete pipe used for siphons or pressure pipe
according to the above provisions . Use only gasketed joints. Perform the following hydrostatic test before backfilling: Fill the pipe line with water at a hydrostati c head of 3 m (10 ft) above the highest point of the pipeline. Maintain the pressure head for a period of not less than 24 hours. Correct any visible leaks or other defects which develop during the test. Sweating that does not develop into a flow or drip w ill not be considered as leakage. Repeat the test until all leaks or other defects are eliminated. METHOD OF MEASUREMENT
603.04.01 Measurement. Measurement shall conform to Subsection 601.04.01 and the requirements specified
herein. Reinforced concrete pipe will be measured by the linear meter (linear foot). Precast end sections will be measured by the each. BASIS OF PAYMENT
603.05.01 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) Reinforced Concrete Pipe (class) ................................ ................................ ........................................... Linear Meter (Linear Foot) (size) Oval Reinforced Concrete Pipe (class) ................................ ................................................................... Linear Meter (Linear Foot) (size) Reinforced Conc rete Siphon Pipe (class) ............................................................................................... Linear Meter (Linear Foot) (size) Reinforced Conc rete Pipe (class) Jacked ............................................................................................... Linear Meter (Linear Foot) (size) Precast End Section ................................ ................................................................................................................................ Each SECTION 604 CORRUGATED METAL PIPE AND METAL ARCH PIPE 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.
Source: Nevada Standard Specifications for Road and Bridge Construction, 2014 Edition. Pages 325–326 of 610.