Section Cover Page
Section 02531
2000-03-22Sewer System

Use this Section to specify requirements which apply specifically to sewer system.

This Master Specification Section contains:

.1This Cover Sheet

.2Specification Section Text:

1.General

1.1Intent

1.2Related Sections

1.3Section Includes

1.4Detail Drawings

1.5Unit Prices

1.6Inspections by Minister

2.Products

2.1Material Schedule

2.2Bedding Materials

3.Execution

3.1Bedding

3.2Pipe Laying

3.3Manholes and Catch Basins

3.4Flushing

.3Detail Drawings:

02531.01Precast Manhole

02531.02Drop Manhole

02531.03750mm Catchbasin

02531.04Manhole Invert on Intersection Less than 90°

02531.05Sewer Service Connection

02531.06Sewer Riser

BMS Basic Master Specification
Alberta Infrastructure
Master Specification System / Page 0
Data Sheet - Reference Standards
Section 02531
2000-03-22Sewer System

Applicable Standards:

.1ASTM C76-95aReinforced Concrete Culvert, Storm Drain and Sewer Pipe

.2CSA A60.1-M1976(R1992)Vitrified Clay Pipe

.3CSA A60.3-M1976(R1992)Vitrified Clay Pipe Joints

.4CAN/CSA-A257Series-M92Concrete Pipe

.5CSA B182.1-96Plastic Drain and Sewer Pipe and Pipe Fittings

.6CSA B182.2-95PVC Sewer Pipe and Fittings

.7CSA G401-93Corrigated Steel Pipe Products

These reference documents may be available for reference purposes in the Technical Resources and Standards Branch Library, Alberta Infrastructure, 3rd Floor, 6950 - 113 Street, Edmonton; Telephone:(780) 427-7924.

BMS Basic Master Specification
Alberta Infrastructure
Master Specification System / Page 01
Section 02531
Plan No:Sewer System
Project ID:Page 1

1.General

1.1INTENT

.1Read this section in conjunction with Section 02501 Piped Utility Systems General Requirements.

1.2RELATED SECTIONS

.1Fill Materials:Section02056.

.2Trench Excavating & Backfilling:Section02319.

1.3SECTION INCLUDES

.1This Section includes all requirements for sewer system, including materials, installation of pipes and appurtenances.

1.4DETAIL DRAWINGS

.1Following detail drawings are appended hereto and form part of this Section.

02531.01Precast Manhole

02531.02Drop Manhole

02531.03750mm Catchbasin

02531.04Manhole Invert on Intersection

Less than 90°

02531.05Sewer Service Connection

02531.06Sewer Riser

SPECNOTE:Include only those detail drawings applicable to project. Coordinate working drawing details with detail drawings. Fill in missing dimensions on detail drawings.

1.5UNIT PRICES

SPECNOTE:Include this article for Unit Price Contracts only.

Unit of Work
Description / Unit of
Measurement / Method of Measurement
Pipe / m / Length installed,
measured along pipe
invert, through
manholes
Pipe Bedding / [m] [m3] / [Length of trench
[tonne] / measured along pipe
invert] [Volume of
material installed,
by truck measure]
[By tonne weight]
Bedding stabilization / [m3] [tonne] / [Volume of material
including removal and / installed by truck
disposal of unsuitable / measure] [By tonne
materials / weight]
[Manholes] / m / Length installed,
[Catch Basins] / measured from top
of base to top of
frame.
[Bases][Cover & Frame] / Each / Number installed.

1.6INSPECTION BY MINISTER

SPECNOTE:Delete this Section for projects involving very short lines.

.1The Minister will arrange and pay for a camera inspection after the sewers have been installed. Rectify defects detected by this inspection.

.2Approximately one month before expiry of the warranty period, a TV inspection will be arranged and paid for by the Minister. Rectify defects detected by this inspection.

2.Products

2.1MATERIALS SCHEDULE

Material / Standard / Type / Joints
VCT Pipe / CSA A60.1-M1976 / Gasketed to CSA
A60.3-M1976
PVC Pipe / CSA B182.1-96 / SDR [35][28] / [Rubber gasketed
(100 to 150 mm) / bell end]
CSA B182.2-95
(200 to 675 mm)
Non / CSA A257.0-M92 / Class 3 / [Rubber gasket to
Reinforced / CSA A257.1-M92 / Sulfate / CSA A257.3-M92] [Bell
Concrete / (up to 600 mm) / resistant / and spigot]
Pipe / cement
Reinforced / CSA A257.0-M92 / [40D][50D][65D] / [Rubber Gasket to
Concrete / CSA A257.2-M92 / [100D][140D] / CSA A257.3-M92] [Bell
Pipe / (300 mm & over) / Sulfate re / and spigot]
sistant cement
Corrugated / CSAG401-93 / Galvanized / [Welded]
Steel / [Coupled]
Precast / ASTM C76-95a / Sulfate resist / [Rubber gasket
Manhole / ant cement c/w / to CSA A257.3-M92]
galvanized
ladder rungs
Precast / Sulfate resist
manhole base, / ant cement
slab top
Catch Basin / As detailed
Manhole / Standard
cover / cast iron

2.2BEDDING MATERIALS

.1Granular Material:[Sand] [[]mm Crushed Gravel] as specified in Section 02056.

3.Execution

3.1BEDDING

.1Provide Class [A] [B] [C] bedding as indicated on detail drawing appended to Section 02501.

3.2PIPE LAYING

.1Lay pipes with bellend upgrade.

.2Provide and utilize "laser" type instrument to control line and grade for grades less than 0.5%. For steeper grades, use approved and accepted method of establishing grades.

.3Ensure that the installed lines have a smooth and uniform invert.

3.3MANHOLES AND CATCH BASINS

.1Set precast base of [manholes] [and catch basins] to proper grade and location specified.

.2Construct pouredinplace concrete base for [manholes] [and catch basins] to proper grade and location specified.

.3Imbed [manholes] [and catch basins] into soft concrete of base as soon after pouring as possible. Ensure correct grade and location.

.4Set cast iron covers to finished grade.

.5Form smooth channels across manhole base. Set inverts of channels to invert elevations specified for pipe. Ensure channels are as wide and deep as diameter of outlet pipe.

.6Knock out openings for pipe in [manholes] [and catch basins] 150mm maximum larger than pipe diameter. Place cement grout in voids between pipe and manhole.

.7Place cement grout in barrel joints [during] [after] erection or use preformed rubber gaskets.

.8Set base of catch basins and catch basin manholes [450] [600]mm below outlet invert.

.9Install manholes to provide minimum 500 mm and maximum 750mm long neck.

3.4FLUSHING

.1Flush out new sewer system to ensure free running pipes. Supply all equipment and water required.

.2Remove dirt and debris from [manholes] [and catch basins].

END OF SECTION