\* \* \* \* \* \* \* \* \* \*

READ AND **REMOVE THIS PAGE** BEFORE PLACING

THE SPECIFICATION SECTION IN THE CONTRACT

\* \* \* \* \* \* \* \* \* \*

[DIVISION 15: MECHANICAL]{.underline}

SECTION 15140 ‑ SUPPORTS AND ANCHORS

USE: Furnishing and installing piping and duct supports.

**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. 1.3B: 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.

E. 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.

F. 2.1B: Select applicable phrases.

G. 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: 12/90

SECTION 15140

SUPPORTS AND ANCHORS

[PART 1: GENERAL]{.underline}

1.1 SUMMARY:

A. Section Includes: \[Furnishing\] \[and\] \[installing\] \[piping
supports for water piping\] \[and\] \[duct supports for ductwork\]
\[and\] \[hangers for concentrated loads\] within the building.

1.2 REFERENCES:

A. Manufacturer\'s Standardization Society of the Value and Fittings
Industry:

MSS SP 58‑88 Pipe Hangers and Supports-Materials, Design and Manufacture

MSS SP 69‑83 Pipe Hangers and Supports ‑ Selection and Application

B. National Fire Protection Association:

NFPA 13‑89 Standard for the Installation of Sprinkler Systems

C. Sheet Metal and Air Conditioning Contractors National Association:

SMACNA Manual 1985 HVAC Duct Construction Standards

1.3 SUBMITTALS:

A. General: Submittals shall be according to Section 01300 ‑ Submittals.

B. Manufacturer\'s Literature: Submit \[[ ]{.underline}\] copies of the
manufacturer\'s descriptive data for hangers and supports to be used on
this project.

C. Shop Drawings: Submit \[[ ]{.underline}\] copies of shop drawings for
fabricated pipe or equipment hangers and supports to be used on this
project.

[PART 2: PRODUCTS]{.underline}

2.1 MATERIALS:

A. Pipe Hangers and Supports:

1\. Provide MSS‑SP‑58 hanger and supports according to MSS‑SP‑69.

2\. Hangers for pipe sizes 1/2 inch to 1‑1/2 inches, shall be adjustable
wrought steel ring.

3\. Hangers for pipe sizes 2‑inches to 4‑inches and cold pipe sizes
6‑inches and over, adjustable wrought steel clevis.

4\. Hangers for hot pipe sizes 6‑inches and over, adjustable steel yoke
and cast iron roll.

5\. Multiple or trapeze hangers shall be steel channels with welded
spacers and hanger rods, cast iron roll and stand for hot pipe sizes
6‑inches and over.

6\. Wall support for pipe sizes to 3‑inches, shall be cast iron hook.

7\. Wall support for pipe sizes 4 inches and over shall be welded steel
bracket and wrought steel clamp, adjustable steel yoke and cast iron
roll for hot pipe sizes 6 inches and over.

8\. Vertical support shall be steel riser clamps.

9\. Floor Support for hot pipe, sizes 6 inches and over shall be
adjustable cast iron roll and stand, steel screws and concrete pier or
steel support.

B. Hanger Rods: Shall be steel hanger rods, \[threaded both ends,\]
\[threaded one end,\] or \[continuous threaded\].

C. Duct Hangers and Supports:

1\. Duct hangers and supports shall be according to Section IV of SMACNA
Manual, HVAC Duct Construction Standards.

2\. Hangers shall be galvanized steel band iron or rolled angle and 3/8
inch rods.

3\. Wall supports shall be galvanized steel band or fabricated angle
bracket.

4\. Vertical support at floor shall be rolled angle.

D. Sleeves:

1\. ab Pipes through floors shall be formed with 18 gauge galvanized
steel.

2\. Round ducts shall be formed with galvanized steel.

3\. Rectangular ducts shall be formed with galvanized steel or wood.

4\. Size large enough to allow for movement due to expansion and to
provide for continuous insulation.

E. Flashing:

1\. Steel flashing shall be 26 gauge galvanized steel.

2\. Lead flashing shall be five lb/sq ft sheet for waterproofing.

[PART 3: EXECUTION]{.underline}

3.1 EXAMINATION:

A. Verification of Conditions: The Contractor shall locate hangers,
supports and accessories to support piping, ductwork, valves and
concentrated loads.

3.2 INSTALLATION:

A. Pipe Hangers and Supports: Support horizontal steel and copper piping
as follows:

Nominal Pipe Distance Between Hanger Rod

Size (inches) Support (ft.) Diameter (inches)

1/2 6 3/8

3/4 to 1‑1/2 6 3/8

2 & 2‑1/2 10 3/8

3 & 4 12 5/8

6 to 12 14 7/8

14 to 18 20 1

1\. Install hangers to provide minimum 1/2 inch clear space between
finished covering and adjacent work.

2\. Place a hanger within one foot of each horizontal elbow.

3\. Use hangers which are vertically adjustable 1‑1/2 inch minimum after
piping is erected.

4\. Where several pipes can be installed in parallel and at same
elevation, provide multiple or trapeze hangers.

5\. Where practical, support riser piping independently of connected
horizontal piping.

B. Low Velocity Duct Hanger and Supports:

1\. Hanger Minimum Sizes:

\(a\) ab Up to 30 inches wide: 1 inch x 16 ga at 10 ft spacing.

\(b\) ab 31 inches to 48 inches wide: 1‑1/2 inches x 16 ga at 10 ft
spacing.

\(c\) Over 48 inches wide: 1‑1/2 inches 16 ga at 8 feet spacing.

2\. Horizontal Duct on Wall Supports Minimum Sizes:

\(a\) ab Up to 18 inches wide: 1 1/2 inches x 16 ga or 1 inch x 1 inch x
1/8 inch at 8 ft spacing.

\(b\) ab Nineteen inches to 40 inches wide: 1 1/2 inches x 1 1/2 inches
x 1/8 inches at 4 ft spacing.

3\. Vertical Duct on Wall Supports Minimum Sizes: At 12 ft 0‑inch
spacing:

\(a\) ab Up to 24 inches wide: 1 1/2 inches x 16 ga.

\(b\) 25 inches to 36 inches wide: 1 inch x 1 inch x 1/8 inch.

\(c\) ab 37 inches to 48 inches wide: 1 1/4 inch x 1 1/4 inch x 1/8
inch.

4\. Vertical Duct Floor Supports Minimum Size: Riveted or Screwed into
Duct:

\(a\) ab Up to 60 inches wide: 1 1/2 inches x 1 1/2 inches x 1/8 inch.

\(b\) Over 60 inches wide: 2 inches x 2 inches x 1/8 inch.

C. Medium and High Velocity Duct Hangers and Supports:

1\. Rectangular Duct Hangers Minimum Sizes:

\(a\) Up to 36 inches wide: 2 at 1 inch x 16 ga at 10 ft spacing.

\(b\) ab 37 inches to 60 inches wide: 2 at 1 inch x 16 ga at 8 ft
spacing.

\(c\) 61 inches to 120 inches wide: 2 at 1 1/2 inches x 12 ga at 8 ft
spacing and 2 inches x 2 inches x 1/4 inch‑trapeze.

\(d\) 121 inches to 240 inches wide: 3 at 3/8‑inch diameter at 4 ft
spacing and 2 1/2 inches x 2 1/2 inches x 3/16‑inch trapeze.

2\. Round Duct Hangers Minimum Sizes: At 10 ft spacing:

\(a\) Up to 18 inches diameter: 1 inch x 16 ga.

\(b\) 19 inches to 36 inches diameter: 1 inch x 12 ga.

\(c\) 37 inches to 50 inches diameter: 1 1/2 inches x 12 ga.

\(d\) 51 inches to 84 inches diameter: 2 at 1 1/2 inches x 12 ga from
girth reinforcing angle.

3\. Vertical Duct Floor Support Minimum Sizes: Rivet to duct and tie
angles together with rod, angles or cinch band.

\(a\) Up to 48 inches wide: 1 1/2 inches x 1 1/2 inches x 1/8 inch.

\(b\) Over 48 inches wide: 2 inches x 2 inches x 3/16 inch.

D. Flashing:

1\. ab Flash and counterflash when mechanical equipment passes through
roof.

2\. Flash vent and soil pipes projecting 3 inch minimum above finished
roof surface with lead worked 1 inch minimum into hub, 8 inch minimum
clear on sides with minimum 24 inch x 24 inch sheet size.

E. Sleeves:

1\. Set sleeves in position in advance of concrete work. Provide
suitable reinforcing around sleeves.

2\. Extend sleeves through potentially wet floors 1 inch above finished
floor level. Caulk sleeves full depth and provide floor plate.

3\. Where piping or ductwork passes through floor, ceiling or wall,
close off space between pipe or duct and construction with
non‑combustible insulation. Provide tight fitting metal caps on both
sides and caulk.

4\. Install chrome plated escutcheons where piping passes through
finished surfaces.

[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