Attachment 3_North Campus Underground Utilities Repairs - Specifications.pdf

Condensate piping

2.3.1.1 Condensate Pipe

Steel; seamless, ASTM A 53, Grade B or ASTM A 106, Grade B, schedule 80;

electric resistance welded ASTM A 53, Grade B; Schedule 80. ASTM A 53, Type F furnace butt welded pipe is not allowed. No joints shall be allowed in the factory fabricated straight section of the carrier pipe. Factory fabricated piping sections as part of an expansion loop or bend shall have all welded joints 100 percent radiographed inspected in accordance with ASME B31.1. Radiographs shall be reviewed and interpreted by an ASNT

2.5 PIPING GROUP 6 - STEEL PIPE

2.5.1 Design Basis

Working pressure, 200 psig at 350 degrees F.

2.5.2 Pipe

All pipe shall be seamless steel conforming to ASTM A53, Grade B. Wall thickness shall be as follows:

1/8" through 24" Schedule "XSTG"

2.5.3 Joints

a. Joints 2 inches and smaller shall be socket welded except connections to screwed components such as steam traps.

b. Joints 2-1/2 inches and larger shall be butt welded.

c. All sizes shall be flanged where shown on the Contract Drawings or where required to connect to flanged valves, fittings, or equipment.

2.5.4 Stress Relieving

Stress relieving is not required.

2.5.5 Fabrication and Erection

Fabrication and erection shall be in accordance with ASME B31.1 or ASME B31.3 per the scope as defined in this Section.

2.5.6 Testing

Testing shall be in accordance with ASME B31.1 or ASME B31.3 per the scope as defined in this Section.

2.5.7 Flanges

Flanges shall be Class 150 steel welding neck type, raised face, and drilled in accordance with ASME B16.5. Material shall conform to ASTM A 105.

2.5.8 Fittings

a. Fittings 2 inches and smaller shall be Class 3000 socket-weld in accordance with ANSI B16.11. Material shall conform to ASTM A 105.

b. Fittings 2-1/2 inches and larger shall be steel butt-welding type in accordance with ASME B16.9 and with the same wall thickness as the attached pipe. Material shall conform to ASTM A 234, Grade

WPB.

2.5.9 Bolting Materials

Bolting materials shall be continuous threaded alloy steel studs threaded in accordance with ANSI B18.2.1. Material shall conform to ASTM A 193, Grade B7. Nuts shall be heat-treated, heavy hexagonal, semi finished and in accordance with ASME B18.2.2. Material shall conform to ASTM A 194, Grade 2H.

2.5.10 Unions

a. Unions 2 inches and smaller shall be Class 3000 forged steel socket weld with steel to steel seats. Material shall conform to

ASTM A 197.

b. Unions 2-1/2 inches and larger shall be made with flanges.

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2.0

2.1

2.2

2.3

2.4

2.5

2.6

2.7

2.8

2.9

2.10

PART 2 PRODUCTS

2.1 BURIED FACTORY-PREFABRICATED PREINSULATED WATER PIPING SYSTEM

Piping (pipe, fittings, and end connections) system shall be suitable for working pressure of 125 psig at 250 degrees F. Piping system shall withstand H-20 highway loading with 2 feet of compacted backfill over top of conduit. Mark each section of conduit with fabricator's name, product identification, and publications to which the items conform. Provide each section of carrier pipe including factory-applied insulation and conduit, with waterproof conduit ends at both ends of each section of carrier pipe, except for piping systems which have the field joints insulated and covered with waterproof shrink sleeves.

2.1.1 Factory-Applied Insulation

Polyurethane or polyisocyanate insulation, minimum density of 1.7 pcf, rated for not less than 250 degrees F, completely filling space between carrier pipe and conduit.

2.1.2 Factory-Applied Conduit

Conduit material, size, and thickness shall be as follows:

Minimum Minimum Carrier Pipe Conduit Size Conduit Thickness (Inches) (Inches) (Inches)

2 4 0.060

3 6 0.060

4 8 0.080

6 10 0.100

8 12 0.120

10 14 0.120

24 28 0.120

2.1.3 Factory-Applied End Seals

Provide watertight end seal, or factory lay-up type end seal between carrier pipe and conduit. Provide sufficient surface bonding area between carrier pipe and conduit to ensure permanent watertight end seal suitable for use with temperature limits of carrier pipe.

2.1.4 Factory-Prefabricated Carrier Piping

Pipe, fittings, flanges, and couplings shall be marked with manufacturer's name, product identification, and publication to which items conform.

Carrier piping shall be as specified in this section. Buried carrier pipe connections between straight sections of pipe beyond 5 feet exterior of buildings may be manufacturer's standard O-ring connections designed to absorb pipe expansion and contraction at working pressure of 125 psig with no leakage. Connections at elbows and tees shall be other than O-ring connections.

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3.1

3.2

3.3

3.4

3.5

3.3 BURIED FACTORY-PREFABRICATED PREINSULATED PIPE INSTALLATION

a. Assembly and alignment: Assemble carrier pipe and fittings according to manufacturer's installation manual; assemble plastic RTR piping in accordance with the Federal Agency Approved Brochure. Maintain proper alignment during assembly of joints.

b. Bedding: Accurately grade trench bedding with a minimum of 6 inches of manufactured or natural sand. Backfill sand to a minimum of 6 inches above and below conduit. Lay bedding to firmly support conduit along entire length.

3.1 INSTALLATION

Installation of exterior buried factory-prefabricated preinsulated water piping systems shall be in accordance with manufacturer's installation manual. Welding of steel piping including qualification of welders shall be in accordance with ASME B31.1, metallic arc process. Deviations shall not be permitted unless authorized in writing by Contracting Officer.

Install piping straight and true to bear evenly on sand bedding material.

a. Cleaning of piping: Keep interior and ends of new piping and existing piping affected by the Contractor's operations, cleaned of water and foreign matter during installation by means of plugs or other approved methods. When work is not in progress, securely close open ends of pipe and fittings to prevent entry of water and foreign matter. Inspect piping before placing into position.

b. Demolition: Remove materials so as not to damage materials which are to remain. Replace existing work damaged by the Contractor's operations with new work of the same construction.

3.2 FIELD JOINTS

a. Carrier piping joints without concrete anchor: Pressure test and approve piping joints. Provide joints with polyurethane or polyisocyanate insulation of same type and thickness as insulation on carrier piping. Provide waterproof shrink sleeves to cover insulation and overlap not less than 6 inches of each end of conduit section.

3.4 FIELD QUALITY CONTROL

Before final acceptance of work, test each system to demonstrate compliance with contract requirements. Thoroughly flush and clean piping before placing in operation. Flush piping at minimum velocity of 8 fps. Correct defects in the work and repeat tests until work is in compliance with contract requirements. Furnish potable water, electricity, instruments, connecting devices, and personnel for tests.

a. Field tests of carrier piping: Do not cover carrier piping joints with insulation, until carrier piping joints pass field tests.

b. Hydrostatic pressure test: Test piping system at 200 psig for minimum holding period of 2 hours during which time pressure shall not drop more than 4 psi. Pressure drop greater than 4 psi corrected for temperature variation constitutes failure. Valve off piping system and disconnect method of piping system pressurization before starting the 2 hour pressure holding period.

During hydrostatic pressure test, examine piping system for leaks.

Repair leaking joints, replace damaged and porous pipe and fittings with new materials, and repeat tests.

c. Field inspections: Prior to initial operation, inspect piping system for compliance with drawings, specifications, and manufacturer's submittals.

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3.7

3.8

3.9

2.2.2 Gasket Group HPB

Gaskets shall be spirally wound, Type 316L stainless steel with non-asbestos filler material and carbon steel outer ring. Gaskets shall be 1/8 inch thick and conform to the flange face on which they are used.

Acceptable products from acceptable manufacturers include: Flexitallic Style CG with Flexite Super Filler, manufactured by Flexitallic Inc., 6915 Hwy. 225, Deer Park, TX 77536; Phone Number (281) 479-3491; or approved equal.

Gasket Specifications

4.0

Pipe insulation Group Specifications

4.1

2.6.2 Group "AA"

2.6.2.1 Insulation Finish

All outdoor and indoor hot insulated lines shall be finished as follows:

a. Apply directly over the insulation an aluminum weatherproof jacket. This jacket shall be manufactured from aluminum alloy 5005 or 3003 half hard, not less than 016 inch thick, fabricated with 3/16 inch corrugations running lengthwise of pipeline. The aluminum shall be factory attached to a moisture barrier of kraft paper treated for this service.

b. All joints shall be made rain or drip proof. Longitudinal joints shall be located on the side of the pipe with the open edge of the lap turned down to shed water. Circumferential joints on pipes that do not have enough slope to get a good shingle effect to keep water out of the joint shall have the inside end of the lap beaded or sealed with a permanently elastic mastic type sealant designed for this service.

c. The aluminum jacket shall be secured by aluminum straps 1/2 inch wide by 0.020 inch thick. The straps shall be placed on 12 inch centers (maximum). Each circumferential joint shall have a strap at the midpoint of the lap.

d. On long radius bends, the aluminum jacket shall be in sections cut on the miter, overlapped, and forming a neat snug fit, using sufficient bands and fasteners to hold jacket properly in place.

e. All 30 inch diameter and smaller insulated elbows shall be protected with a prefabricated elbow jacket. The jacket shall be manufactured of high purity 024 inch aluminum with a suitable moisture barrier on the interior of the jacket to prevent decomposition of the aluminum. The prefabricated elbow jacket shall be applied directly over the insulated fitting.

f. All insulation on fittings, flanges, valves, and other irregular shaped items on which the aluminum jacket cannot be neatly applied shall be finished as follows:

1. Over the smooth insulation surface and cloth reinforcing as described below, apply the mastic in two or more coats at a sufficient rate to provide a dry film thickness of 1/8".

2. The mastic shall be applied by trowel or spray. The exact application conditions, procedures and recoat time shall be as recommended by the mastic manufacturer.

3. Reinforcing shall consist of a No. 10 mesh nylon or Dynel cloth. Flat surfaces shall be sured to the insulated structure on 18" centers maximum.

4. The mastic shall be gray or metallic gray vinyl VI-CRYL CP-10 or CP-11 manufactured by Childers Products Company, 35555-T Curtis Blvd., Eastlake, OH 44095; Phone Number: (216) 953-5200; or WC-1 manufactured by Vimasco Corporation, Dept. TR, P.O. Box 516, Nitro, West Virginia 25143; Phone Number: (888) 276-9146.

5 Upon completion of the work, the Contractor shall furnish the Engineer a certificate stating that the mastic has been applied in the same manner as specified or approved by its manufacturer.

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4.2

5.0

Pumped Pretreated Waste (PPW) Piping includes chemicals that decontaminate the waste from the biological toxins.

The liquid contains solids that tend to sludge and harden on rough surfaces. For design purposes,the specific gravity of the liquid shall be considered to be 1.15. The maximum design conditions shall be 225 PSIG at 225 degrees F. Normal operating conditions are 60 PSIG at 70 degrees F.

The install temperature shall be considered to be 60 degrees F. The maximum operating temperature for thermal expansion consideration shall be 105 degrees F. All piping shall be filament wound using an amine cured epoxy resin and fiberglass reinforced with surfacing viel for superior corrosion resistance. The basis of design for the service pipe is "Green Thread" manufactured by Smith Fibercast. The facility has a successful history with this piping system and it is therefore identified as the basis of design for this system. Any alternate will be closely scrutinized to the following design criteria:

a. ASTM D 2996 Designation Code: 1 to 1-1/2 inch NPS = RTRP-11FF1-3111, 2 to 4 inch NPS = RTRP-11F1-3112

b. Nominal Data for 4 inch NPS Pipe

1. Inside Diameter: 4.280 inches

2. Outside Diameter: 4.510 inches

3. Wall thickness: 0.030 inches

4. Weight: 1.2 pounds/foot

5. Capacity: 0.75 gallon/cubic foot

c. Pressure Ratings for 4 inch NPS Pipe

1. Maximum Internal Pressure at 225 degrees F: 225 PSIG

2. Maximum External Pressure at 75 degrees F: 77 PSIG

3. Maximum External Pressure at 225 degrees F: 56 PSIG

@75 degree F @225 degree F

PSI PSI

d. Axial Tensile per ASTM D2105:

1. Ultimate Stress 10,300 7,160

2. Design Stress 2,575 1,790

3. Modulus of Elasticity 1.80 x 106 1.03 x 106

e. Axial Compression per ASTM D695:

1. Ultimate Stress 33,300 17,800

2. Design Stress 8,300 4,450

3. Modulus of Elasticity 1.26 x 106 0.54 x 106

f. Beam Bending per ASTM D2925:

1. Ultimate Stress 23,000 16,000

2. Design Stress 2,900 2,000

3. Modulus of Elasticity 2.18 x 106 1.11 x 106

(long term)

g. Hydrostatic Burst per ASTM D1599:

1. Ultimate Hoop Tensile Stress 46,300 49,540

PART 2 PRODUCTS

2.1 PIPE MATERIALS AND FITTINGS

2.1.1 Service Pipe

The liquid that will be in the pipes mostly consists wastewater from animals, laboratory services, and related substances. The liquid also

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6.1

6.1.1

@75 degree F @225 degree F

PSI PSI

h. Ring Tensile per ASTM D2290:

1. Minimum Hoop Tensile Stress 27,280 ----

i. Hydrostatic Design per ASTM D2992 Procedure A - Hoop Tensile Stress:

1. Cyclic 150 x 106 8,850 5,540 Cycles

j. Poisson's Ratio: 0.38

k. Coefficient of Linear Thermal Expansion per ASTM D696: 1.26 x 105 in./in/oF

l. Thermal Conductivity per ASTM D177: .23 BTU/(ft.)(hr.) (oF)

m. Specific Gravity per ASTM D792: 1.8

n. Flow Factor - SF Hazen-Williams Coefficient: 150

o. Surface Roughness: 1.7 x 10-5 Feet (0.00021 in.)

p. Manning's "n": 0.009 in.

2.1.2 Fittings

Match piping, or be part of the piping system "family" as recommended by the manufacturer that meets or exceeds the properties of the piping system.

2.1.3 Joints

With the excepting of the flanged connections to the carbon steel piping in the manholes, pipe and fittings shall be joined using a bell and spigot method with epoxy adhesive applied to the joints to secure the system and maintain the rating of the piping system. The pipe manufacturer shall provide the epoxy. All joint fitters shall be factory trained by the pipe manufacturer on site. The flanges in the manholes shall be meet ANSI B16.5 Class 150 bolt hole standards. The piping system supplier shall provide clear direction as to the appropriate bolt and gasket recommendation and also the facing style of the flanges. Steel back-up plates shall be provided for all blind flanges if necessary to achieve pressure ratings equivalent to the pipe.

2.1.4 Sub-Assemblies

Gland seals and end seals shall be designed and factory prefabricated to prevent the ingress of moisture into the system. All sub-assemblies shall be designed to allow for complete draining and drying of the conduit system.

2.1.5 Carrier Pipe (Outer Conduit)

Shall be epoxy fiberglass as manufactued by A.O. Smith Red Thread II or approved equal.

6.1.2

6.1.3

6.1.4

6.1.5

2.1.6 Pipe Supports

All pipes within the inner casing shall be supported as required. These supports shall be designed to allow for continuous airflow and drainage of the conduit in place. The straight supports shall be designed to occupy not more than 10 percent of the annular air space. No plastic types ofsupports will be allowed.

2.1.7 Field Closure

Field closures shall be made with a split fiberglass closure sleeve of the same diameter and thickness as the containment pipe. The sleeve shall be sealed and bonded to the containment pipe with double hand lay-ups over all seams.

2.1.8 Backfill

A 6 inch layer of sand or pea gravel shall be placed and tamped in the trench to provide a uniform bedding for the conduit. The entire trench shall be evenly backfilled with a similar material as the bedding in 6 inch compacted layers to a minimum height of 6 inches above the top of the insulated piping system. Bedding and backfill materials shall be as recommended by the manufacturer.

2.1.9 Leak Detection/Location System

a. The secondary containment system manufacturer shall furnish a leak detection system which shall consist of water detecting switches at the ends of the pipes in the manholes as shown on the Contract Drawings. For each low pipe in a valve vault, two switches are provided for redundancy and to determine the severity of the leak.

b. The leak detection system shall consist of one microprocessor based panel capable of continuous monitoring of the leak detection switches for leaks. Provide one single monitoring box that monitors all switches. The main microprocessor unit shall be provided under the base bid equipped with the capability for detection and indication for an additional 10 switches.

c. The liquid detection switch shall be explosion proof with 18V probes and shall have threaded connections. The switch shall detect water based, chemical, and hydrocarbon liquids.

d. The monitoring panel shall be provided with auxiliary contacts for remote alarm. Provide one contact for each piping system leak detection.

6.1.6

6.1.7

6.1.8

6.1.9

Reinforced Concrete pipe - Storm drain

ASTM C76 (2022a) Standard Specification for Reinforced Concrete Culvert, Storm Drain, and Sewer Pipe

ASTM C76M (2022a) Standard Specification for Reinforced Concrete Culvert, Storm Drain, and Sewer Pipe (Metric)

ASTM C443 (2021) Standard Specification for Joints for Concrete Pipe and Manholes, Using Rubber Gaskets

3.1.1.3 Pipe Laying and Jointing

Inspect each pipe and fitting before and after installation; remove those found defective from site and replace with new. Provide proper facilities for lowering sections of pipe into trenches. Lay pipe with the bell ends in the upgrade direction. Adjust spigots in bells to produce a uniform space. Blocking or wedging between bells and spigots will not be permitted. Replace by one of the proper dimensions any pipe or fitting that does not allow sufficient space for proper calking or installation of joint material. At the end of each work day, close open ends of pipe temporarily with wood blocks or bulkheads. Provide batterboards not more than 25 feet apart in trenches for checking and ensuring that pipe invert elevations are as indicated. Laser beam method may be used in lieu of batterboards for the same purpose.

2.1 PIPELINE AND CULVERT MATERIALS

2.1.1 Concrete Piping for Pipes 12 Inch Diameter and Greater

2.1.1.1 Concrete Pipe and Fittings

Storm drainage pipe shall be reinforced concrete pipe conforming to ASTM C 76, Class IV. Culvert pipe shall be Class IV reinforced pipe conforming to ASTM C 76.

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7.1.1

7.1.1.1

7.1.2

3.2 GENERAL EXCAVATION

The Contractor shall perform excavation of every type of material encountered within the limits of the project to the lines, grades, and elevations indicated and as specified. Grading shall be in conformity with the typical sections shown and the tolerances specified in paragraph FINISHING. Satisfactory excavated materials shall be transported to and placed in fill or embankment within the limits of the work. Unsatisfactory materials encountered within the limits of the work shall be excavated below grade and replaced with satisfactory materials as directed. Such excavated material and the satisfactory material ordered as replacement shall be included in excavation. Surplus satisfactory excavated material not required for fill or embankment shall be disposed of in areas approved for surplus material storage or designated waste areas on the site.

Unsatisfactory excavated material shall be disposed of in designated waste or spoil areas offsite or at an onsite location if permitted by the Contracting Officer. During construction, excavation and fill shall be performed in a manner and sequence that will provide proper drainage at all times. Material required for fill or embankment in excess of that produced by excavation within the grading, limits shall be excavated from the approved borrow areas offsite. The Contractor shall assume that all on-site excavated material is unsatisfactory.

1.2 DEFINITIONS

1.2.1 Satisfactory Materials

Satisfactory materials shall comprise any materials classified by ASTM D 2487 as GW, GP, GM, GP-GM, GW-GM, GC, GP-GC, GM-GC, SW, SP.

Satisfactory materials for grading shall be comprised of stones less than 4 inches, except for fill material for pavements and railroads which shall be comprised of stones less than 2 inches in any dimension.

1.2.2 Unsatisfactory Materials

Materials which do not comply with the requirements for satisfactory materials are unsatisfactory. Unsatisfactory materials also include man-made fills; trash; refuse; cohesive materials as classified below;

backfills from previous construction; and material classified as satisfactory which contains root and other organic matter or frozen material. The Contracting Officer shall be notified of any contaminated materials found during excavations.

Excavation and backfilling

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9.0

9.1

9.2

3.13 SUBGRADE AND EMBANKMENT PROTECTION

During construction, embankments and excavations shall be kept shaped and drained. Ditches and drains along subgrade shall be maintained to drain effectively at all times. The finished subgrade shall not be disturbed by traffic or other operation and shall be protected and maintained by the Contractor in a satisfactory condition until ballast, subbase, base, or pavement is placed. The storage or stockpiling of materials on the finished subgrade will not be permitted. No subbase, base course, ballast, or pavement shall be laid until the subgrade has been checked and approved, and in no case shall subbase, base, surfacing, pavement, or ballast be placed on a muddy, spongy, or frozen subgrade.

3.9 SUBGRADE PREPARATION

3.9.1 Construction

Subgrade shall be shaped to line, grade, and cross section, and compacted as specified. This operation shall include plowing, disking, and any moistening or aerating required to obtain specified compaction. Soft or otherwise unsatisfactory material shall be removed and replaced with satisfactory excavated material or other approved material as directed.

Rock encountered in the cut section shall be excavated to a depth of 6 inches below finished grade for the subgrade. Low areas resulting from removal of unsatisfactory material or excavation of rock shall be brought up to required grade with satisfactory materials, and the entire subgrade shall be shaped to line, grade, and cross section and compacted as specified. After rolling, the surface of the subgrade for roadways shall not show deviations greater than 1 inch when tested with a 10 foot straightedge applied both parallel and at right angles to the centerline of the area. The elevation of the finish subgrade shall not vary more than

0.05 foot from the established grade and cross section.

3.9.2 Compaction

Compaction shall be accomplished by sheepsfoot rollers, pneumatic-tired rollers, steel-wheeled rollers, vibratory compactors, or other approved equipment. Except for paved areas and railroads, each layer of the embankment shall be compacted to at least 95 percent of laboratory maximum density.

3.9.2.1 Subgrade for Pavements

Subgrade for pavements shall be compacted to at least 95 percentage laboratory maximum density for the depth below the surface of the pavement shown. When more than one soil classification is present in the subgrade, the top 6 inches of subgrade shall be scarified, windrowed, thoroughly blended, reshaped, and compacted.

3.10 FINISHING

The surface of excavations, embankments, and subgrades shall be finished to a smooth and compact surface in accordance with the lines, grades, and cross sections or elevations shown. The degree of finish for graded areas shall be within 0.1 foot of the grades and elevations indicated except that the degree of finish for subgrades shall be specified in paragraph SUBGRADE PREPARATION. Gutters and ditches shall be finished in a manner that will result in effective drainage. The surface of areas to be turfed shall be finished to a smoothness suitable for the application of turfing materials.

Grading shall eliminate all ponding of surface water providing positive drainage off site.

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10.1

10.2

10.3

10.4

10.5

3.2.2 Underground, Exterior-Wall Pipe Penetrations

a. Install steel pipe for sleeves.

b. Seal pipe penetrations using mechanical sleeve seals. Select sleeve size to allow for 1-inch annular clear space between pipe and sleeve for installing mechanical sleeve seals.

3.2.3 Mechanical Sleeve Seal Installation

Select type and number of sealing elements required for pipe material and size. Position pipe in center of sleeve. Assemble mechanical sleeve seals and install in annular space between pipe and sleeve. Tighten bolts against pressure plates that cause sealing elements to expand and make watertight seal.

3.2.1 Sleeves

Install sleeves only where specifically called out on the drawing details.

a. Cut sleeves to length for mounting flush with both surfaces.

b. Install sleeves in new walls and slabs as new walls and slabs are constructed.

3.2.2 Underground, Exterior-Wall Pipe Penetrations

a. Install steel pipe for sleeves.

b. Seal pipe penetrations using mechanical sleeve seals. Select sleeve size to allow for 1-inch annular clear space between pipe and sleeve for installing mechanical sleeve seals.

3.2.3 Mechanical Sleeve Seal Installation

Select type and number of sealing elements required for pipe material and size. Position pipe in center of sleeve. Assemble mechanical sleeve seals and install in annular space between pipe and sleeve. Tighten bolts against pressure plates that cause sealing elements to expand and make watertight seal.

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11.1

11.3

Link Seal and Pipe sleeves

12.0

12.1