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READ AND **REMOVE THIS PAGE** BEFORE PLACING

THE SPECIFICATION SECTION IN THE CONTRACT

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[DIVISION 15: MECHANICAL]{.underline}

SECTION 15070 ‑ WELDED STEEL PIPE AND FITTINGS

USE: Furnishing and installing welded steel pipe.

**NOTES TO SPECIFIER:**

A. Options within paragraphs are identified by enclosure in brackets;
blank spaces enclosed by brackets \[\_\_\_\_\_\] provide for information
to be inserted, as appropriate, to individual projects.

B. **TO AVOID CONFLICTING REQUIREMENTS AND COSTLY MISTAKES,** the
specifier must edit (delete, substitute or add to the text). The
remaining paragraphs must be renumbered.

C. DELETE FOR FINAL COPY: Notes to the Specifier, located between lines
of asterisks; all \[brackets\], [underlining]{.underline}, **boldface**,
and *italics*, within the paragraphs; and this page. (Open Reveal Codes
\[alt F3\] to do this accurately.)

D. [To Edit "(Footer B)":]{.underline} (Corel 8). **ENTIRE FOOTER SHOULD
BE BOLDED.** Click in the footer and delete the "Project Name (ftr B)"
text and replace it with the **Name of the Project (upper and lower
case)**. Replace date with current MM/YY (WITHOUT BRACKETS).

E. The Guide Specifications are intended to be continuously reviewed and
revised. User's technical comments are appreciated. Also, other related
or similar specification that are written "from scratch" that could
benefit others, or other questions can be sent to NSTC A/E Group, ST
110, or call (303) 987-6868.

**DRAWING DATA REQUIRED:**

**REQUIRED SPEC MODIFICATIONS:**

[GENERAL NOTES]{.underline}

A. Whenever entire articles, paragraphs or subparagraphs are not
applicable, the articles, paragraphs or subparagraphs should be deleted;
when necessary, reletter or renumber articles, paragraphs or
subparagraphs.

B. THIS GUIDE IS NOT INTENDED AS A SUBSTITUTE FOR READING THE ENTIRE
SECTION.

[TECHNICAL NOTES]{.underline}

A. 1.1A: Select applicable words.

B. 1.1B: Select or add applicable specification sections. Do not list
specification sections from Division 15.

C. 1.2: Select or add applicable references.

D. 1.3A: Select applicable specification section.

E. 1.3B: Insert number of copies of the manufacturer\'s descriptive data
required. Normally 5 copies are required. Distribution after review is
normally 1 copy to the COR, 3 copies to the Contractor, and 1 copy to
the project file.

F. 1.3C: Insert number of copies of shop drawings required. Normally 5
copies are required. Distribution after review is normally 1 copy to the
COR, 3 copies to the Contractor, and 1 copy to the project file.

G. 1.3D: Insert number of copies of mill reports required. Normally 5
copies are required. Distribution after review is normally 1 copy to the
COR, 3 copies to the Contractor, and 1 copy to the project file.

H. 1.3E: Insert number of copies of Certificates of Conformance
required. Normally 3 copies are required. Distribution after review is
normally 1 copy to the COR, 1 copy to the Contractor, and 1 copy to the
project file.

I. 4.1 and 4.2: When a \"lump sum\" Contract is used, delete the title
PART 4: MEASUREMENT AND PAYMENT, and both articles from this section.
Measurement and payment will be addressed in Part 4 of Section 01010
-Summary of Work.

**REVISIONS OF THIS SECTION:**

CSI format, editorial changes: 12/01

Metric:

Technical Update: 01/91

15070

WELDED STEEL PIPE AND FITTINGS

[PART 1: GENERAL]{.underline}

1.1 SUMMARY:

A. Section Includes: \[Furnishing\] \[and\] \[Installing\] welded steel
pressure pipe and fittings.

1.2 REFERENCES:

A. American Society for Testing and Materials:

ASTM D 4-86 Bitumen Content

ASTM D 5-86 Penetration of Bituminous Materials

ASTM D 6-80 Loss on Heating of Oil and Asphaltic Compounds

ASTM D 36-86 Softening Point of Bitumen (Ring-And-Ball Apparatus)

ASTM D 92-85 Flash and Fire Points by Cleveland Open Cup

ASTM D 113-86 Ductility of Bituminous Materials

B. American Water Works Association:

AWWA C 200-86 Steel Water Pipe 6 Inches and Larger

AWWA C 203-86 Coal‑Tar Protective Coatings and Linings for Steel Water
Pipelines ‑ Enamel and Tape ‑ Hot Applied

AWWA C 205-85 Cement‑Mortar Protective Lining and Coating for Steel
Water Pipe ‑ 4 Inches and Larger ‑ Shop Applied

C. Federal Specifications:

Fed. Spec. RR‑W‑375 Wire Fabric, Steel, Welded (For Reinforcing
Concrete)

Fed. Spec. FTM‑601 Rubber: Sampling and Testing

D. International Association of Plumbing and Mechanical Officials:

UPC-1988 Uniform Plumbing Code

1.3 SUBMITTALS:

A. General: Submittals shall be according to Section 01300 -
Submittals.\] \[and\] \[Section 01365 - Certificates of Conformance.\]

B. Manufacturer\'s Literature: Submit \[\_\_\_\_\] copies of the
manufacturer\'s descriptive data for \[\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\]
\[the following items\] to be used on this project.

C. Shop Drawings: Submit \[\_\_\_\_\] copies of shop drawings for
fabrication, fittings, joints, lining, coating and installation details
to be used on this project. \[A bill of materials shall be furnished
with the shop drawings.\] \[Drawing shall be \[same\] \[larger\] scale
as the full size Contract Drawings.

D. Reports: Submit \[\_\_\_\_\] copies of the mill certification for
steel and test reports for the steel to be used on this project.

E. Certificates of Conformance: Submit \[\_\_\_\_\] copies of written
certification from the supplier of the Contractor-furnished welded steel
pipe to be used on this project that it conforms to the requirements of
this specification section.

[PART 2: PRODUCTS]{.underline}

2.1 MATERIALS:

A. Steel Water Pipe 6 Inches and Larger: Shall meet the requirements of
AWWA C 200. Welded sheet steel or plate steel cylinders provided with
approved mechanical or welded joints. Wall thicknesses of pipe shall be
as indicated on the drawings.

B. Cement Mortar Lining: Shall be according to AWWA C 205, except that
only 4 inch to 12 inch diameter pipe shall be lined under these
specifications. Lining thickness shall not be less than 1/4 inch nor
more than 3/8 inch.

C. Gasket Sealed Joints: Formed integrally with the steel cylinder.
Joint shall be of approved bell and spigot design, with the spigot end
grooved to accommodate and retain the gasket ring, providing a seal
against \[external and internal pressure and vacuum.\] The joint shall
operate satisfactorily under low and under high pressure, with bell end
of sufficient depth to extend a minimum of 3 inches beyond the gasket
when assembled, providing unrestricted flow at joint, and permitting
installation and service at a deflection of 3 degrees at each joint.
Gaskets special composition rubber rings of size, cross section, and
texture to assure a permanent watertight seal. Test gaskets in
accordance with Federal Test Method Standard No. 601.

D. Asphalt Protective Coating and Wrapping: Prior to application of
asphalt coating, the steel pipe shall be mechanically cleaned of foreign
matter. After cleaning, exterior pipe surface shall be primed with an
approved asphalt primer. After primer has dried, each pipe section shall
be machine wrapped. Wrapping shall be applied with a minimum overlap of
1/2 inch and sufficient asphalt shall be applied to form a bead outside
of the lap. Wrapping shall be applied smooth under suitable tension to
give a tight wrapping free from wrinkles, buckles, air pockets, and
tears.

1\. Asphalt shall meet the following physical requirements:

Penetration at 115 degrees F 0.75 cm. max. (ASTM D5)

Penetration at 77 degrees F Not less than 0.27 cm.

Penetration at 32 degrees F Not less than 0.20 cm.

Softening Point Not less than 190 degrees F, (ASTM D 36)

Flash Point Not less than 425 degrees F, (ASTM D 92)

Ductility at 77 degrees F Not less than 2.0 cm.(ASTM D 113)

Solubility in carbon Not less than 99.5 disulfidepercent (ASTM D 4)

Loss on heating 0.75 max (ASTM D 6)(1 percent by weight)

Penetration after loss on heating 80 percent min.(ASTM D 6)

2\. Wrapping: Shall be fiberglass and kraft paper that meets the
requirements of AWWA C 203 (Appendix), except that the fiberglass mat
shall be embedded in asphalt and then wrapped with the 80 pound kraft
paper.

3\. Electrical Detection Inspection: After wrapping, the entire exterior
surface of each pipe section shall be inspected for holes, voids, or
other wrapping imperfections. An approved, spark type electrical
detection device shall be used. Any defects located shall be repaired by
patching or other means and reinspected until approved.

E. Coal‑Tar Enamel Protective Coating and Wrapping: Coal‑tar enamel
coating shall be used in lieu of asphalt protective coating if
specifically required and shall meet the requirements of AWWA C 203.
Wrapping shall be fiberglass and kraft paper, AWWA C 203 (Appendix).
Wrapping shall be inspected as specified in paragraph 2‑1D above.

F. Cement Mortar Coating: Shall be according to AWWA C 205, except that
only 4 inch to 12 inch diameter pipe shall be coated under these
specifications. Coating thickness shall be as indicated on the drawings.
Wire mesh reinforcement shall be placed approximately in the center of
the coating. Steel wire for wire mesh reinforcement shall be according
to Fed. Spec. RR‑W‑375. Fittings, bends, connections, adapters, stubs,
specials, and accessories shall meet the requirements specified for the
pipe and shall be of the same gauge as the pipe.

G. Anchor Blocks: Shall be as shown on the drawings and as recommended
by the pipe manufacturer.

H. Weight and Dimensions:

1\. Weight: Permissible variance in theoretical weights of pipe shall be
governed by permissible variations in weight for sheets, coils, or
plates. Material shall meet the manufacturer\'s standard gauge or
thickness.

2\. Diameter: Outside diameters of pipe 4 inches through 12 inches shall
be 4 1/2, 6 5/8, 8 5/8, 10 3/4 inches respectively, to give full nominal
inside diameters of 4, 6, 8, 10, and 12 inches after being cement mortar
lined.

3\. Length: Pipe shall be furnished in standard manufacturer\'s lengths,
unless specified or shown otherwise. Specials shall be furnished in
lengths as required to complete the installation. The welding of shorter
sections in the shop to make up standard lengths after testing, dipping,
or wrapping will not be permitted.

2.2 SOURCE QUALITY CONTROL:

A. Inspection: Pipe manufacturer shall provide proper facilities for
access and inspection whenever the work is in preparation or progress.
Material, fabricated parts, and pipe which are defective or which do not
meet the specifications requirements will be subject to rejection.

B. Hydrostatic Test: Each length of pipe shall be tested by the
Contractor to a hydrostatic pressure which subjects the steel to a
tensile stress of not less than 22,000 psi and not more than 38,000 psi.
While under test pressure, all welds shall be inspected and all portions
showing leakage shall be rewelded and retested until watertight.

PART 3: EXECUTION

3.1 INSTALLATION:

A. Laying Pipe: Lay to the grades and lines shown according to the pipe
manufacturer\'s specifications. Do not lay pipe in water or when
trenches or weather conditions are unsuitable for such work. When work
is not in progress, securely close open ends of pipe and fittings. Take
up and re‑lay any length that has had its line, grade, or joint
disturbed after laying. Thoroughly clean pipe interiors of foreign
matter before lowering into trench. Replace with new pipe any laid
section of pipe found damaged or defective.

B. Excavation and Trenching: Shall be according to Section 02229 -
Trenching, Backfilling, and Compacting.

C. Pipe Cutting: Cutting for closure or other reasons shall be done
neatly by methods which will not damage pipe, lining or coating.

D. Assembly: Assemble in trench or on adequate supports laid across the
trench. Take care in lowering the assembled pipe to avoid cracking at
joints. Make joints, including expansion joints, as recommended by pipe
manufacturer. Line and coat joints to protect the pipe.

E. Anchor blocks: Use as shown and as recommended by pipe manufacturer.

F. Backfill: Shall be according to Section 02229 ‑ Trenching,
Backfilling, and Compacting. Backfill after the Contracting Officer
accepts the tests.

3.2 FIELD QUALITY CONTROL:

A. Inspection: The Contracting Officer will inspect the pipe before the
Contractor lowers it into the trench. Defective or damaged pipe will be
rejected.

B. Testing: Shall be according to Section 02651 ‑ Testing of Piping
Systems. The Contractor shall make tests upon completion of the system,
or any reasonable length of the system, prior to backfilling and after
thorough flushing of the portion to be tested.

3.3 CLEANING:

A. Cleaning: Immediately prior to installation, the Contractor shall
draw a cloth swab saturated with clean water through each length of
pipe. Swabs may be kept in the pipe and pulled forward past each joint
after jointing completion.

B. Disinfection: After completion of testing and prior to placing in
service, the water system shall be treated according to Section 02675 ‑
Disinfection of Water Distribution Systems.

[PART 4: MEASUREMENT AND PAYMENT]{.underline}

4.1 METHOD OF MEASUREMENT:

A. Units: The work described in this section will not be measured for
payment.

4.2 BASIS OF PAYMENT:

A. Payment: No direct payment for the work described under this section
will be made. The Contractor shall include consideration for this item
in the bid price for other items of the Contract.

END OF SECTION