This specification shall cover the installation of mechanical piping, fittings, valves, pumps and associated items.
E35.2 Materials
E35.2.1 Large Diameter Piping and Fittings
200mm to 300mm diameter ductile iron pipe shall conform to AWWA C151, thickness Class 52.
Cast iron fittings shall conform to ANSI/AWWA C110/A21.10 suitable for 103 Mpa working pressure. Fittings shall be complete with integrally cast flanges and placed as shown on the Mechanical Drawings.
E35.2.2 Flanges and Adaptor Flanges
Thread-on flanges for ductile iron pipe shall conform to AWWA C115 or ASME B16.1.
Adaptor flanges shall be ductile-iron, Grade 65-45-12, conforming to the current ASTM Standard A536 Standard for Ductile-iron Castings. Bolt holes shall be drilled in accordance with AWWA C115 or ASME B16.1.
Adaptor flanges inside pumping station to be Uni-Flange Series 400 or approved equal.
Adaptor flange for wet well inlet pipe shall be Uni-flange, Gruvlok, Vic-Flange or approved equal.
Clamping screws on adapter flanges shall be zinc-plated, heat treated steel with a minimum tensile strength of 28 Mpa.
E35.2.3 Small Diameter Piping, Fittings and Valves
Small diameter PVC pipe shall be Schedule 80, Type 1, Grade 1 to CSA B137.3.
Socket type fittings shall be Schedule 80 PVC to ASTM D-2467.
Small diameter PVC valves; valve body, stem, ball and unions shall be made of PVC conforming to ASTM D-1784. Valve seats shall be Teflon.
Solvent for PVC fittings shall conform to ASTM D-2564.
Sight tube shall be cast acrylic.
Sump PVC check valves; valve body, ball and unions shall be made of PVC conforming to ASTM D-1784.
Water meter will be provided at no charge by City of Winnipeg, Water and Waste Department, Water Services Branch.
Domestic cold water pipe shall be Type 'L' third party certified hard copper tube to ASTM B.88.
Fittings - Wrought copper or cast brass, solder joint pressure fitting.
Backflow preventor shall be Watts Model 709.
Small diameter threaded gate valves and hose bibs (75mm and less) shall be all cast bronze, solid wedge disk, rising stem c/w handwheel rated for minimum 1.0 Mpa non-shock cold water service. Direction of opening shall be counter-clockwise and shall be indicated on the handwheel. Bronze material shall conform to ASYM B62. Acceptable product; Crane, Jenkins, Kennedy, Mueller, or approved equal. Hose bibbs inside building: Crane Model 5046 nickel plated brass wall faucet with Watts chrome plated vacuum breaker hose end. Ball valves; Toyo Fig. 5049A, Newman Hattersley 1979, Kitz 69A, Crane 9322, Nibco S-585-70.
E35.2.4 Large Diameter Pipe Supports and Hangers Pipe supports and hangers shall be as follows:
(a) Clevis: Grinnell Figure 260 or approved equal (b) Turnbuckles: Grinnell Figure 114 or approved equal E35.2.5 Nuts, Bolts and Fasteners
Flanged nuts and bolts shall be high strength carbon steel sized to requirements of flange.
Concrete anchor bolts shall be Type 316 Stainless Steel, Hilti Kwik-Bolt or Rawl Stud of the size of bolt shown on the Drawings. Embedment depth and size where not shown on the Drawings to be as required for load being carried or resisted.
E35.2.6 Gaskets
Flange gaskets shall be full faced rubberized cloth, 3mm in thickness.
Rubber gaskets for adapter flanges shall conform to AWWA C111, Standard for Rubber-Gasket Joints for Cast Iron and Ductile-iron Pressure Pipe and Fittings.
E35.2.7 Flow Meter
Magnetic flow meter will be supplied by the City at no charge complete with the flanged pipe segment shown on the Mechanical Drawings.
E35.2.8 Differential Pressure Cell
Differential pressure cell will be provided by the City at no charge, complete with hardwire as shown on the Mechanical Drawings.
E35.2.9 Gate Valves
Gate valves shall be bronze mounted, iron body with flanged ends equipped with:
(a) outside rising stem, screw and yoke (b) bronze trimmed cast iron wedge (c) bronze stem
(d) double O-ring stem seals
(e) cast iron handwheel with finger grips
Flanges shall conform in dimension and drilling to ASME B16.1, Class 150.
Direction of opening shall be counterclockwise and shall be clearly stamped or indicated with raised letters and arrow on the handwheel.
Manufacturer's nameplate shall be attached to the valve body with stainless steel fasteners.
Gate valves shall be as manufactured by Crane, Jenkins, Kennedy, Mueller, Clow or approved equal.
E35.2.10 Wet Well Valve Stem Extension
Wet well valve stem extension shall be Type 304 stainless steel with 50 mm square AWWA operating nut. Wall brackets to be Type 304 stainless steel with 2-9mm diameter x 90mm long Type 316 anchor bolts as shown on Drawings.
E35.2.11 Check Valves
Check valves shall be non-clog , cast iron body with flanged ends and sewage resistant rubber flap as manufactured by Val-Matic or approved equal.
Flanges shall conform in dimension and drilling to ASME B16.1, Class 150.
Manufacturer's nameplate shall be attached to the valve body with stainless steel fasteners.
E35.2.12 Wastewater Pumping Equipment
The following wastewater pumping equipment will be supplied by the City at no charge:
(a) Two (2) Flowserve 8MF13B vertical mounted non-clog centrifugal pumps complete with base stands, suction elbows and close coupled 30 HP, 600 Volt, 3 ph 1200 rpm TEFC vertical mount U.S. Electrical Motors.
(b) Two (2) 300 mm x 250 mm eccentric steel reducers.
Wastewater pumping equipment information is included in Appendix A.
E35.2.13 Sump Pump
The sump pump shall be in accordance to the following requirements:
(a) Rated capacity – pump must meet or
or exceed shown operating point: 8 cu.m/hr. @ TDH of 8 m.
(b) Impellor: non-clog
(c) Solids handling: 20 mm
(d) Mechanical seal: carbon rotary/ceramic stationary (e) Required size of discharge: 38mm to 50mm
E35.2.14 Paint
Paint shall be semi-gloss alkyd enamel as by Pratt and Lambert, Benjamin Moore, Glidden or Northern Paint. Color shall be chosen from the above suppliers by the Contract Administrator.
Primer shall be compatible with the finish paint and be from the same manufacturer.
E35.2.15 Flygt Balls
The following Flygt balls shall be provided and installed by the City of Winnipeg Electrical and Instrumentation Section:
(a) Overflow, in weir manhole (b) High Level, in wet well (c) Station Flood, in dry well E35.3 Construction Methods
E35.3.1 Large Diameter Piping, Fittings and Valves
Install piping and equipment in accordance with the Drawings and Specifications, local authorities having jurisdictions and the National Building Code. In the case of conflicting requirements, be governed by the most severe regulations.
Handle all piping, fittings and valves in a workmanlike manner. Piping, fittings and valves which are cracked, chipped, dented, dropped or otherwise damaged will not be accepted and shall be replaced by the Contractor at his own cost.
Store all piping, fittings and valves in an enclosed shelter off the ground acceptable to Contract Administrator.
Do not make revisions, alterations or substitutions to piping layouts, sizes, fittings and flanges without written approval from the Contract Administrator.
Construct concrete foundation bases required to support piping, fittings and valves as shown on Drawings. Ensure proper alignment of all equipment with particular reference to the pumps and associated drivers. All factory assembled rotating machinery shall be checked for alignment and adjustment made to manufacturer's limits. Check alignment of equipment after securing to foundations and grout sole plates or install concrete foundations after confirmation of alignment and review by the Contract Administrator.
Install dimensioned pipes and fittings before fitting spool and filler pieces and join the entire piping system so that no stress or strain is created in the lines and associated equipment due to forcing parts in position.
Under no circumstances, will "pipe springing" be allowed.
Ensure no debris, tools or other objects are left in piping, fittings and valves.
Make all joints watertight.
Flanges, branch connections, outlet and adapters shall be true and set at right angles to the axis pipes to ensure accurate fit. Connection shall not extend inside the pipe.
Temporary bracing and supports shall be provided to adequately support the pipe, fittings and valves during installation. All permanent supports shall be in place before temporary bracing and supports are removed. No piping shall be supported by any item of equipment.
Correct discrepancies, irregularities, defects and damage to the piping, valves and equipment attributable to faulty or incorrect installation at own expense as directed by the Contract Administrator.
Provide certificates where required that work installed conforms to requirements of authorities having jurisdiction. All changes and alterations required by an authorized inspector of any authority having jurisdiction shall be carried out at the Contractor's expense.
E35.3.2 Wet Well Valve Stem Extension
The wet well valve stem extension shall be installed plumb and true and supported in such a manner so as to ensure it does not bind and is free turning during operation.
E35.3.3 Small Diameter Piping, Fittings and Valves
Install small diameter PVC pipe and fittings in accordance with the manufacturer’s instructions and in general conformity with ASTM D-2855.
Use an approved primer before applying solvent cement to PVC fittings and pipe. Do not join pipe and fittings at temperatures below 10 degrees Celsius. Do not use cement that has gelled in the container or applicator.
Install copper water pipe in accordance with manufacturer’s instructions. Clean and roughen outside of pipe ends and inside of fittings with emery cloth prior to soldering. All changes in direction to be made with fittings, pipe bending is not acceptable.
Solder shall be lead free consisting of tin, copper and silver (Silvabrite 100 or equal).
Valves shall be installed with stems upright or horizontal.
Install dielectric insulating unions between all pipes or apparatus constructed of dis-similar metals. Use brass nipples at flush valves, etc.
Test backflow preventers in accordance with manufacturer's recommendations, Contract Administrator or as required by provincial/ municipal authorities.
On completion, flush out piping systems before installation of equipment, fixtures, etc. in order to remove any foreign material in piping.
All piping systems shall be pressure tested in the presence of the Contract Administrator with water to 690 kPa (100 psig) at the highest point of system. Maintain pressure without loss for 4 hours. Correct deficiencies as directed by the Contract Administrator.
Provide fittings required and make connection to nipple provided on wastewater pumps for water supply.
Provide a suitable aluminum support and platform to hold backflow preventor and water meter where water service enters the building. Secure meter and backflow preventor to platform with removable fasteners.
Arrange with City of Winnipeg, Water and Waste Department, Water Services Branch to install water meter on platform.
E35.3.4 Wastewater Pumping Equipment
Install and place in satisfactory operation two (2) wastewater pumping units as supplied by the City in accordance with the manufacturer's instructions.
Pick up and load the wastewater pumping equipment between 8:30 a.m. and 4:30 p.m. on Business Days at McPhillips Pumping Station, 360 McPhillips Street, Winnipeg, Manitoba and transport to the Crane Wastewater Pumping Station site.
Provide forty-eight (48) hours notice to Mr. Robert Boily of the City of Winnipeg, Water and Waste Department, at 986-4452 to allow arrangements for pickup to be made.
The Contractor shall be responsible for the wastewater pumping equipment while the equipment is in his possession from time the equipment is picked up until the City accepts the installation and assumes operation of the equipment .
The Contractor shall promptly replace at his cost wastewater pumping equipment lost or damaged through negligence or carelessness, as determined by the Contract Administrator, with identical equipment.
The Contract Administrator will provide a copy of the manufacturer's drawings and installation manual before commencing installation commences.
E35.3.5 Wastewater Pumping Equipment Start-Up and Field Testing
Do not start-up and operate wastewater pumping equipment without approval from and in the presence of the Contract Administrator.
As part of a separate Contract, the City will arrange with the wastewater pumping equipment Supplier for a qualified representative to inspect the installation, start-up, commissioning and performance testing of the wastewater pumping equipment under actual operating conditions.
Provide the Contract Administrator at least one week notice of the proposed schedule for wastewater pumping equipment start to allow arrangements to be made with the pump supplier to be present for the start up and field testing.
The Contractor shall be present during field testing of the wastewater pumping equipment and provide assistance if required.
The object of the field tests is to confirm performance and determine that each unit will operate satisfactorily without cavitation, overheating or overloading of drive and free from excessive vibration.
The Contractor will be responsible to correct deficiencies with the wastewater pumping equipment installation as identified by the pumping equipment Supplier during the inspection prior to start up.
The Contractor shall be responsible to remove wastewater pumping equipment identified by the Contract Administrator that fails to operate or perform properly as determined by field testing and transport the equipment to the Supplier’s shop in Winnipeg.
The City shall be responsible for the re-installation of wastewater pumping equipment once it has been repaired or replaced.
The wastewater pumping equipment supplier is:
Power & Mine Supply Company Ltd.
961 Sherwin Road, Unit B-01 Winnipeg, Manitoba
Attention: Dan Shamlock, P. Eng.
Telephone: 694-9300 E35.3.6 Flow meter
Install the flow meter in accordance with the manufacturer’s instructions. City forces will be responsible to complete the electrical connections to the flow meter.
E35.3.7 Contract Drawings
The Drawings for mechanical work are performance drawings, diagrammatic, intended to convey the scope of work and indicate general arrangement and approximate location of apparatus, fixtures and pipe runs. The Drawings do not show all Architectural and Structural details.
Do not scale Drawings. Obtain information involving accurate dimensions from site measurement.
Make, at no additional cost, any changes or additions to materials, and equipment necessary to accommodate structural conditions and components.
Alter, at no additional cost, the locations of materials and/or equipment as directed by the Contract Administrator that do not necessitate additional material.
E35.3.8 Construction Information Drawings
Where requested, prepare drawings showing sleeves and openings for passage through structure, and all inserts, equipment bases, sumps, pits and supports.
E35.3.9 Temporary Services
Do not use any of the permanent systems during construction unless specific written approval is obtained from the Contract Administrator.
E35.3.10 Coordination
Coordinate work of subcontractors and City Forces to avoid conflict.
E35.3.11 Cleaning and Painting
Prime and paint pipe, pumping equipment, valves and fittings after the installations are complete.
Provide the Contract Administrator with color samples to chose from prior to any painting being done.
Apply primer and paint using spray, roller or brush methods in accordance with the paint manufacturer's instructions. Surfaces to be painted shall be thoroughly cleaned of dirt, grease, weld slag and foreign matter before application. Sufficient drop clothes, shields or other protection shall be provided to protect adjacent piping, equipment, walls and floors from drips or splatters.
Do not paint over galvanized metal, aluminum, stainless steel, rubber, plated surfaces and name plates.
E35.3.12 Cutting and Patching
The cutting of openings in walls, slab and floors not shown on the Drawings or Shop Drawings shall be approved by the Contract Administrator. The opening size shall be kept to the minimum required. Patching shall be to the original or specified conditions, materials and finish.
E35.3.13 Submittals
Submit shop drawings in accordance with E13 for the following:
(a) all valves
(b) Inlet valve stem extension (c) water service backflow device
(d) platform/support for backflow device and meter (e) coupling for water supply
(f) all link seals
(g) pipe telepost/supports
E35.4 Measurement and Payment
All costs for work in this Specification are to be included in the Unit Price for “Wastewater Pumping Station”, which price shall be payment in full for supplying all materials and for performing all operations herein described, and all other items incidental to the work included in this Specification.
E36. VENTILATION