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The City Standard Construction Drawings, as submitted by the City Engineer, to be used in the City on improvements to be maintained by the City, and for items to be connected to the City utility systems, are hereby approved and adopted as follows:
STANDARD CONSTRUCTION DRAWINGS
ACCOMPANIMENT TO ORDINANCE NUMBER 77-168 DATED 11-22-77
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Standard Concrete Pavement Details
Concrete Pavement Joints
Concrete Pavement Joint Location
Standard Concrete Pavement Details - Minor Collector Street
PVC Sewer Pipe - Material Installation & Specifications (a-e)
4' Dia. Sanitary M.H.
Typical Sign Installation Details
Typical Watermain Trench
Typical Blocking For Cast Iron Bends
Typical Blocking For Cast Iron Tees
Typical Blocking For Cast Iron Bends Bottom Vertical
Typical Blocking For Cast Iron Bends Top Vertical
Encasement of Vert. Bends
Blocking for Offsets
Typical Blocking For Concrete Watermains
Typical 6" Hydrant & Valve
Pay Items for Hydrants
Standard Gate Valve Manhole
16" Thru 24" Valve Manhole
Type I Blow-Off Manhole Sizes 8" Thru 12"
1. Manhole base shall be ODOT Class C concrete with #4 reinforcing bar matt 11"cc EW.
2. Floor of manhole shall be sloped 1/4" per foot toward sump hole or 8" V.P. drain whichever applies.
3. Sump hole when used shall be 12" diameter and 4" deep with reinforcing bars depressed to clear sump as required.
4. Drain when used shall be 8" Vitrified clay pipe ASTM C-700 ES-FD with ASTM C-425 joint with min. slope of 0.4% grade.
5. Brick shall be solid clay or shale ASTM C-32 or approved equal.
6. Masonry Cement shall be ASTM C-91 or approved equal.
7. Sand used for making cement Mortar shall be Silica Sand free of organic matter and passing through a #20 mesh sieve and retained by a #30 mesh sieve.
8. Pier under main tee shall be shall be square constructed of cast in place ODOT Class C concrete or built up brick.
9. Manhole shall be plastered inside and outside with 1/2" of 1:2 cement Mortar: sand.
10. Only cast iron steps shall be permitted such as Neenah 1980-E or approved equal step spacing shall be not less than 16 inches.
11. Manhole frame and lid shall be heavy duty (min. 16,000 # wheel load rating) cast iron, solid lid with the word WATER cast on lid such as Neenah R-1716 or approved equal.
12. When in pavement area, manhole frame and lid shall be set 1/4" below pavement.
13. Main tee shall be AWWA C-110 and C-111 250 PSI cement lined with 6" flanged branch.
14. 6" Gate Valve shall be AWWA 150 PSI flanged joint with A 2" operating nut opening to the right.
15. 1" x wall thickness around pipe shall be filled with an approved expansion joint material.
Air Release Valve Chamber
Polyethylene Encasement for Ductile Iron Pipe
All ductile iron pipe shall have polyethylene encasement. The polyethylene film shall be tube type, the polyethylene film shall be manufactured from materials conforming to ASTM Standard Specification D-1248-68. Raw materials shall be Type I, Class A or C, Grade E-1, with a flow rate of 0.4 maximum and have a dielectric strength....volume resistivity, a maximum ohm - cm3 10". The film shall have a tensile strength of 1,200 psi minimum; elongation of 300%; and dielectric strength...of 800 v/mil thickness minimum. The polyethylene film shall have a minimum nominal thickness of 0.008 in. The tube size shall be as follows:
Nominal Pipe Min. Polyethylene
Diameter (in.) Width (in.)
The tape used to hold the film in place shall be polyethylene type 1-1/2" wide of a type recommended by the film manufacturer.
The polyethylene encasement shall prevent contact between the pipe and the surrounding backfill and bedding material.
The general method of installing the film is as follows:
1. Cut the polyethylene film to a length two feet longer than the length of the pipe section. Slip the tube over the pipe. Center the tube to provide a one-foot overlap on each adjacent pipe section. Bunch the tube in accordian fashion lengthwise until it clears the pipe ends, and equipment support point(s).
2. Lower the pipe into the trench. Make up the pipe joint with the preceding section of pipe. A shallow bell hole must be made at the joints to facilitate the installation of the polyethylene tube.
3. After assembling the pipe joint, make the overlap of the polyethylene tube, pull the bunched polyethylene from the preceding length of pipe, slip it over the end of the new length of pipe and secure in place with tape. Then slip the end of the polyethylene from the new pipe section over the end of the preceding length of pipe and secure the overlap in place; then pull lengthwise to take up the slack. Along the barrel of the pipe, take up the slack width and make snug, but not tight, securing the fold at the quarter points.
4. Ant rips, punctures, or other damage to the polyethylene film shall be repaired with adhesive tape or tube section cut open and wrapped around the pipe. The tube section shall be secured in place with adhesive tape.
5. Proceed with the next section of pipe in the same manner.
Bends, reducers, offsets, and other pipe-shaped appurtenances shall be covered with polyethylene film in the same manner as the pipe.
Odd-shaped appurtenances, including valves, ties, crosses, and other odd-shaped pieces which cannot be wrapped practically in a tube, shall be wrapped in a flat piece or split length of polyethylene tube. The sheet shall be brought under the appurtenance and brought up around the body. Seams shall be made by bringing the edges together, folding over twice and tapping down. Slack widths and overlaps shall be handled as described above for pipe joints. Tape the polyethylene securely in place at valves stem and other penetrations.
The use of the tape shall hold the film in position, but shall not require that all film protection be a completely air and water-tight enclosure.
Backfill material shall be free from cinders, refuse, bolders, rocks, stones or other material that could damage the polyethylene film. Care shall be taken during placement of backfill to prevent damage to the polyethylene film wrapping. Backfill and or pipe bedding material shall be as specified for the pipe without the polyethylene wrapping.
JUNCTIONS BETWEEN WRAPPED AND UNWRAPPED PIPE
Where the polyethylene wrapped pipe joins a pipe which is not wrapped, extend the polyethylene tube to cover the unwrapped pipe a distance of at least two feet, secure the end with two circumferential turns of tape. Where beginning with a valve, install the wrapping material over the valve or other appurtenance.
OPENINGS IN ENCASEMENT
Openings for branches, service taps, blow-offs, air valves, and similar appurtenances shall be made by making an X-shaped cut in the polyethylene, and temporarily folding the film back. After the appurtenance is installed, tape the slack securely to the appurtenance and repair the cut, as well as any other damaged areas in the polyethylene with tape.
2" Air Release Valve & Box
Typical Water Tap
Standard Concrete Pavement Details
Standard Concrete Pavement Details
Monitoring Well Access Manhole Details
Concrete Pavement Replacement
Commerical & Industrial Drive Apron For Curb Streets
Smooth Lined Corrugated Polythlene Pipe for Storm Sewers Up To 18" (a-c)
Junction & Drop San. M.H.
Sanitary Sewer Repairs Method of Measurement
Precast Sampling And Metering Manhole Details