333 SECTION 714 CULVERTS, STORM DRAINS, EDGEDRAINS, AND UNDERDRAINS
714.01 Description
This work consists of installing culverts, storm drains, edgedrains, and underdrains.
714.02 Equipment
Reserved.
714.03 Materials
A.Culverts and Storm Drains. Item Section Reinforced Concrete Culvert, and Storm Drain Pipe 830.01 A Precast Reinforced Concrete Manhole Sections 830.01 B Metallic (Zinc or Aluminum) Coated Corrugated Steel Culverts, Storm Drains, and Underdrains 830.02 B Smooth Wall Steel Pipe Culverts 830.02 F Polymer Coated Corrugated Steel Pipe 830.02 C Corrugated Polyethylene Culverts 830.03 F Geosynthetic Material – Type S2 858.01 Provide mortar consisting of a mixture of one part Portland Cement to two parts mortar sand, and sufficient water to furnish proper consistency. Where placing new end sections on existing pipe, identify whether the type of end section needed is male or female. If using polymer coated corrugated steel pipe, install end sections that meet the requirements of Section 830.02 C “Polymer Coated Corrugated Steel Pipes ” or
830.02 B, “Metallic (Zinc or
Aluminum) Coated Corrugated Steel Culverts, Storm Drains, and Underdrains”.
B.Underdrains. Item Section Perforated, Corrugated Polyethylene 830.03 A.4 Table 714 -01 Underdrain Aggregate Gradation Sieve Size Percent Passing 3/8 Inch 100 No. 4 95 – 100 No. 16 45 – 80 No. 50 10 – 30 No. 100 0 – 10 No. 200 0 – 3 334 C. Bridge Approach Drains. Item Section Plastic Pipe (perforated and non -perforated) 830.03 A.4 Geosynthetic Material – Type D1 858 Table 714-02 Bridge Approach Drain Gradation Sieve Size Percent Passing by Weight 1 inch 100 3/4 inch 90 – 100 3/8 inch 20 – 55 No. 4 0 – 10 No. 8 0 – 5 No. 200 0 – 1.0
D.Edgedrains. Item Section Class 43 Aggregate 816.03 Perforated, Corrugated, P.E. Pipe 830.03 A.4 PVC Discharge Pipe 830.03 A.3 Geosynthetics 858 The shale and L.A. abrasion requirements will not be required for Class 43 Aggregate
E.Structural Plate Pipe. Material shall meet Section 830.02, “Metal Pipe” .
714.04 Construction Requirements
A.General.
1.Existing Drainage Facilities. If the existing drainage facilities become inoperable before the new drainage system is functioning, provide sufficient temporary pumping and drainage facilities to keep the roadway drained. Include the cost of providing sufficient tem porary pumping and drainage in the price bid for other items.
2.Excavation. Dispose of unsuitable or excess excavation at an approved location.
3.Geosynthetic Reinforcement. Install geosynthetic reinforcement transversely along the length of the pipe. Overlap geosynthetics as specified in Section 709.04, “Construction Requirements” for the applicable material type. 335 Place 10 inches of loose aggregate over geosynthetic material, except directly under pipe, before compacting.
4.Bedding. Tamp bedding material in place under both haunches of the pipe up 15 percent of the total height by hand-held air -operated, mechanical tamper s.
5.Laying Pipe. Begin laying pipe at the downstream end. Place the pipe in contact with the shaped bedding throughout its full length. Place bell or groove ends of rigid pipe and outside circumferential laps of flexible pipe facing upstream.
6.Joining Pipe. Provide rigid pipe with bell and spigot or tongue and groove joints. Join pipe sections so the ends are fully entered and the inner surfaces are flush and even. Wrap joints on concrete pipes in Type S2 geotextile fabric.
7.Relaid Pipe. Clean all salvaged pipe of foreign material before reinstallation. Furnish connecting devices or seals needed to join pipe or end sections.
8.Deflection Testing. Test all metal and thermoplastic pipe used for mainline and paved intersecting roadways for deflection a minimum of 30 days after the pipe is installed. Pass a nine point mandrel or other approved object through the pipe to check for deflection. Use a mandrel with a diameter not less than 95 percent of the inside diameter of the pipe. If the mandrel cannot be passed through the pipe, replace the pipe. The Engineer will visually inspect all metal and thermoplastic pipe under unpaved approaches for deflection. If the Engineer sees any deflection, the Engineer will require the Contractor to pass a nine point mandrel or other approved object through the pipe to check for deflection. Use a mandrel with a diameter not less than 95 percent of the inside diameter of the pipe. If the mandrel cannot be passed through the pipe, replace the pipe. Perform t he deflection test under the observation of the Engineer.
9.Connection to Manholes, Inlets, and Pipes. If connections are required to a manhole, inlet barrel, or pipe entrance, connect pipe by cutting the opening and grouting in the connecting pipe.
10.Compaction Control for Aggregate. Compact aggregate to at least 90 percent of the maximum dry density with a moisture content at the time of compaction not less than 2.0 percentage points below, nor more than 3.0 percentage points above the optimum moisture content. The Engineer will determine the maximum dry density and optimum moisture content as specified in ND T180. Compact aggregate for approach pipes according to the conduit manufacturer’s recommendation 336 Use a maximum lift thickness of 6 inches.
11.Compaction Control for Non-Aggregate Material. Compact non-aggregate material to the compaction requirements in Section 203.04 G .2, “Compaction Control, Type A.” Use a maximum lift thickness of 6 inches. Compact material for approach pipes according to the conduit manufacturer’s recommendations.
12.Construction Cover. Meet the pipe manufacturer’s recommendation cover requirements during construction operations. Repair or remove and replace any pipe damaged by construction traffic.
B.Polymer Coated Corrugated Steel Pipe. Use a wide canvas slings or wide padded skids when handling polymer coated corrugated steel pipe. Replace or repair pipe that has damaged polymer coating. If the Engineer determines that repairs can be made to the polymer coating, perform repairs in accordance with AASHTO M 243.
C.Smooth Wall Steel Pipe. Perform boring concurrently with the installation of the steel pipe. Install smooth wall steel pipe culverts using equipment that encases the bore hole as the earth is removed. Extend steel pipe through the undisturbed fill and install it without disrupting traffic or damaging the roadway grade and surface. Perform the boring or jacking without use of water. Bore pipe in straight lines. Place the flow line elevation at the starting point for jacking within 0.1 foot of the staked grade. Install the pipe so the flow line is not reversed at any point and the line and grade at any point within the pipe does not vary by more than 1/2 foot from the designated line and grade. Smooth wall steel pipe must be spliced by welders qualified for groove welded pipe position 5G. The Department will require welders be qualified according to AWS D1.1 with the exception that qualification for the full penetration portion of the test is not required. Construct the splice so the root pass and the remaining part of the weld, including the reinforcement, meets the requirements of AWS D1.1. Use reinforcement that is less than 1/8 inch in height. When transitioning between smooth wall steel pipe culverts and other pipe material, provide a connection constructed in accordance with the pipe manufacturer’s guidelines. Submit a detail drawing showing the construction of the connection before fabrication.
D.Underdrains. Encase the perforated underdrain in a granular fill trench section with the trench section enclosed with filter fabric. Use filter fabric that meets the requirements of Section 709.04 B, “Geosynthetic Drainage M aterial (Type D)” . Dig the trench section 1.5 feet wide and 2.0 feet deep. Place the underdrain to rest on the filter fabric at the bottom of the trench, at the desired grade. Use a maximum of 1 inch of granular material to adjust the pipe to grade. Overlap the filter fabric a minimum of 12 inches. Apply solvent and cement to the PVC joints in accordance with the manufacturer’s recommendations . Use ordinary backfill above the granular fill material as specified in Section 210.03 A, “Ordinary Backfill” and 210.04 B.2, “Ordinary Backfill” .
E.Bridge Approach Drains. Place and compact backfill using the same density requirements as the adjacent embankment.
F.Edgedrains. Install edgedrain outlets at intervals of 250 feet. Install double outlets at intervals of 500 feet and at low points in the edgedrain flow line. Place the edgedrain with a machine trencher capable of cutting the trench, lining the trench with a geotex tile fabric, and laying the pipe in a continuous operation. Use machine trencher designed and operated so the excavated material does not fall back into the trench. Place the edgedrain at a minimum grade of 0.2 percent. Use laser grade control on the trenching machine whenever the pipe grades do not follow the pavement grades at a constant depth. Compact the trench backfill with a hand-held ai r-operated, mechanical tampers. If edgedrain is installed adjacent to non-permeable base material, enclose the edgedrain in a geotextile fabric sock. Use Type D3 or Type D4 geotextile drain fabric as specified in Section 858, “Geosynthetics.” Install edgedrain outlets concurrently with the longitudinal edgedrain. Place the discharge pipe at a minimum grade of 2 percent. Install headwalls a minimum of 6 inches above the ditch grade. Use grout to secure the discharge pipe to the headwall. Shape the inslope to conform to the sides and toe of the headwall. Install the headwall and rodent screen at the same time as installing the outlet pipe. Install the rodent screens to be removable. Do not grout the rodent screens into place. Connect edgedrain outlets to a storm sewer system using grout, rubber or plastic gaskets, or a gasket joint inserted into a thermoplastic coupling cast into the inlet, manholes, or pipe. Make the connections to the storm sewer concurrently with the installation of the drain. Cap the ends of the drainage line with a manufactured pipe cap where outlets are not required. Connect all joints securely according to the manufacturer’s recommendations.
G.Structural Plate Pipe. Place the backfill in lifts not to exceed 6 inches of loose material. During placement and compaction, ensure that each side is brought up within 6 inches of the other at all times. Compact bedding according to Se ction 714.04 A.10 “Compaction Control for Aggregate” . Compact the backfill as specified in Section 203.04 G .2.a “ND T 180” . 338 714.05 METHOD OF MEASUREMENT The Engineer will measure, completed and in place, as specified in Section 109.01, “Measurement of Quantities” and as follows:
A.Culverts and Storm Drains. The Engineer will measure pipe along the top of the pipe and round the measurement to the nearest foot. The Engineer will include branch connections and elbows i n the length measured for pipe.
B.Edgedrains. The Engineer will measure edgedrains parallel to the roadway and make no deduction for outlet structures installed along the drain.
714.06 Basis of Payment
Pay Item Pay Unit Pipe Conduit__inch Linear Foot Pipe Conduit__inch Storm Drain Linear Foot Pipe Conduit__inch Approach Linear Foot __ IN Grates for Reinf Conc End Section Each Relaying Pipe (Type and Size) Linear Foot Relaying End Section (Type and Size) Each Bridge Appr oach Drains Each Edge Drain Non -Permeable Base Linear Foot Headwalls, Precast Concrete, __ In. Each Include the cost of end sections in the price bid for pipe conduit. Such payment is full compensation for furnishing all materials, equipment, labor, and incidentals to complete the work as specified. Section 720 339 SECTION 720 MONUMENTS AND RIGHT OF WAY MARKERS
720.01 Description
This work consists of furnishing and installing Alignment Monuments, Iron Pin R/W Monuments, Iron Pin Reference Monuments , and Right of Way Markers.
720.02 Equipment
Reserved.
720.03 Materials
A.General. Item Section Portland Cement Concrete Class AE 802 Epoxy Resin Adhesives 806.02 Deformed and Plain Steel Bars for Concrete Reinforcement 836.02 A
B.Right of Way Markers. Right of way markers constructed of recycled plastic.
720.04 Construction Requirements
Provide a Professional Land Surveyor (PLS) licensed in the State of North Dakota to oversee monument placement. The PLS shall record all section corner and quarter corner monuments placed, in accordance with North Dakota Century Code. Submit a copy of the recordation. A PLS is not required for the installation of right of way m arkers.
720.05 Method of Measurement
The Engineer will measure as specified in Section 109.01, “Measurement of Quantities”.
720.06 Basis of Payment
Pay Item Pay Unit Alignment Monuments Each Iron Pin R/W Monuments Each Iron Pin Reference Monuments Each Right of Way Markers Each Include cost for removals of designated monuments or markers in the price bid for other items. Include the cost of materials, installation and the Professional Land Surveyor in the price bid for “________ Monuments”. Such payment is full compensation for furnishing all materials, equipment, labor, and incidentals to complete the work as specified.
Source: North Dakota Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 368–373 of 550.