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READ AND **REMOVE THIS PAGE** BEFORE PLACING

THE SPECIFICATION SECTION IN THE CONTRACT

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[DIVISION 13: SPECIAL CONSTRUCTION]{.underline}

SECTION 13203 ‑ STEEL RESERVOIR

USE: Installing steel reservoir and appurtenances, complete with sand
cushion, reinforced concrete or steel tank ring, drain, piping,
fittings, roof hatch, manholes, vent, overflow, valve box, valves,
inside and outside ladders, and painting.

**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 13.

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 installation
instructions 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. 1.03C: 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. 1.03D: Insert number of copies of design calculations 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. 4.01 and 4.02: 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 \[Section 01009 -
General Information and Requirements\] \[or\] \[Section 01010 - Summary
of Work.\]

**REVISIONS OF THIS SECTION:**

CSI format, editorial changes: 11/01

Metric:

Technical Update: 09/92

SECTION 13203

STEEL RESERVOIR

[PART 1: GENERAL]{.underline}

1.1 SUMMARY:

A. Section Includes: Installing steel reservoir and appurtenances,
complete with sand cushion, reinforced concrete or steel tank ring,
drain, piping, fittings, roof hatch, manholes, vent, overflow, valve
box, valves, inside and outside ladders, and painting.

1.2 REFERENCES:

A. American Water Works Association:

AWWA D100-84 Welded Steel Tanks for Water Storage

AWWA D102-78 Painting Steel Water-Storage Tanks

B. Federal Specifications:

WW-V-54

WW-P-406

1.3 SUBMITTALS:

A. General: Submittal shall be according to \[Section 01009 - General
Information and Requirements.\] \[and\] \[Section 01300 - Submittals.\]
\[and\] \[Section 01365 - Certificates of Conformance.\]

B. Installation Instructions: Submit \[\_\_\] copies of the
manufacturer\'s installation instructions for steel reservoir to be used
this project.

C. Shop Drawings: Submit \[\_\_\] copies of shop \[and erection\]
drawings for steel reservoir to be used on this project. \[Drawings
shall be prepared by and bear the stamp of a \[registered
\[\_\_\_\_\_\_\_\_\_\_\_\_\_\] engineer\] \[licensed architect.\] \[Shop
drawings shall include details of fittings, joints, lining, coating and
installation details.

D. Design Computations: Submit \[\_\_\] copies of design calculations
for steel reservoir to be used on this project. \[Design shall be
according to the requirements of this specification section.\] \[Design
computations shall be prepared by and bear the stamp of a \[registered
\[\_\_\_\_\_\_\_\_\_\_\_\_\_\] engineer\] \[licensed architect\].

[PART 2: PRODUCTS]{.underline}

2.1 MATERIALS:

A. Paint: Use vinyl or tar base paint for interior surfaces and
oil‑alkyd paint for exterior surfaces.

B. Sand Cushion Mix: Sand shall be fine, clean, granular material with
at least 95 percent of the material passing a No. 4 sieve. It shall be
thoroughly mixed with a heavy oil at a rate of approximately 1/2 gallon
per cubic foot of sand. The oil shall have a viscosity of not less than
800 s.s.u. at 122 degrees F. Cut‑back asphalts, Grades MC‑1 or SC‑1, may
also be used provided that the rate of application is increased to
approximately one gallon per cubic foot and the bottom plates are placed
within 48 hours after mixing the sand and asphalt.

2.2 MANUFACTURED UNITS:

A. Reservoir: Shall be welded steel design in accordance with AWWA D 100
on the basis of the following criteria:

1\. Capacity, diameter and shell height are indicated on the drawings.
If diameter or shell height is not shown or stated, the Contractor shall
use the most economical section.

2\. Unless otherwise indicated on the drawings, the roof shall be of the
column support type for reservoirs having a diameter in excess of 12
feet. Reservoirs having diameters less than 12 feet may be provided with
a self‑supporting type roof. Roof pitch shall not exceed 2 inches per
foot.

3\. Additional allowances for corrosion will not be required.

4\. A snow load of 25 pounds/square foot shall be assumed unless
otherwise shown on the drawings, or stated in the specifications.

[PART 3: EXECUTION]{.underline}

3.1 PREPARATION:

A. Excavation: Perform in accordance with Division 2. The excavated
material shall be spread, as directed, immediately adjacent to the
reservoir site.

3.2 ERECTION/INSTALLATION:

A. Foundation: Construct in accordance with approved shop drawings.
Where a reinforced concrete tank‑base ring is required, the top of the
concrete ring shall be finished smooth and shall not vary more than 1/8
inch from the required elevation per tank plate length, and all points
on the ring shall be within 1/4 inch of the true elevation. Where a
steel tank base ring is required, the ring shall be placed a uniform
distance from the edge of the tank with the top edge of the ring level
and true to the elevation required. The steel ring shall be welded so as
to form one continuous thrust plate around the tank.

B. Sand Cushion: Place as indicated on the drawings.

C. Grouting: Grout any space existing between the tank bottom and the
concrete ring after the tank has been completely erected and set true to
line and grade.

1\. The foundation shall be thoroughly wetted and 1:1 cement‑sand grout
forced under the base plates and filling the space completely with the
exception of the outer one inch as specified below.

D. Flashing: Fibrated cold plastic coal‑tar pitch flashing compound
shall be used to fill any space under the bottom of the tank in the
outer one‑inch periphery. The entire outer edge of the bottom shall also
be sealed to the tank foundation.

E. Connections: The number, size and location of pipe connections are
indicated on the drawings. Unless otherwise stated, the outlet shall be
provided with a removable silt stop 6 inches high.

F. Ladder: Both an inside and outside ladder shall be provided. The
inside ladder shall extend to the floor of the reservoir. Both ladders
shall comply with Article 6.4 of AWWA D 100.

G. Venting: Provide roof vents that will allow for water entering or
leaving the reservoir at a rate of 1,000 gpm. Vents shall be screened
with a 16 mesh bronze screen.

H. Water Level Indicator: Provide and locate where indicated on the
drawings. The indicator shall consist of a float, target and vertical
gate. Suitable guides shall be provided on the gate for the target. The
gage shall be painted white, laid off in feet and parts of feet with 3
inch or larger numbers. The float and target shall be of a non‑corrosive
material. The entrance through the reservoir top shall be watertight and
insect‑tight. All metallic parts shall be painted similar to the
reservoir. Gauge shall be similar and equal to Model 92302 manufactured
by the GPE Company of Berkeley, California.

I. Valves and Boxes: Provide as indicated on the drawings and in
accordance with the following:

1\. If all valves are enclosed in a concrete valve box, the valves and
valve box shall comply with the applicable provisions of Section 15126.
If valves under 3 inch size are required, they shall be FS WW‑V‑54, Type
I, Class A. The pipe connected to the reservoir shall be standard weight
steel pipe, FS WW‑P‑406, Weight A, Class I, (Black). A sleeve type
coupling shall be provided in the vertical leg of all pipe attached to
the reservoir. All pipe, fittings and non‑operating parts of valves
shall be painted with 2 coats of a rust‑inhibitive paint.

2\. If valves are separately installed with cast iron valve boxes, the
valves and boxes shall be furnished and installed in accordance with the
applicable provisions of Section 15101.

J. Painting:

1\. Interior Painting: The Contractor shall have the option of providing
either of the following painting systems:

a\. Vinyl: All interior surfaces shall be coated to a dry film thickness
of not less than 5 mils in accordance with AWWA D 102 Inside Paint
System No. 2.

b\. Cold Applied T & O Tar‑Base Paint: All interior surfaces shall be
coated in accordance with AWWA D 102, Inside Paint System No. 10.
Cleaning, as provided for in the above specification, shall be performed
in the field and the minimum dry film thickness shall be 20 mils.
Certain proprietary coatings requiring less than 20 mil thickness may be
acceptable, but only on the condition that the coating be
unconditionally guaranteed for a period of one year.

2\. Exterior Painting: All exterior surfaces shall be painted in
accordance with AWWA D 102, Outside Paint System No. 1 (Alkyd). If the
Contractor elects to shop clean and prime the steel plates, as provided
for in the above specification, the 4 coat system shall be used. If the
Contractor elects to field clean and prime the steel plate, the 3 coat
system may be used. The 2 finish coats shall be long‑oil, alkyd paint of
a color selected by the Contracting Officer. The 2 coats shall be tinted
to contracting colors. The minimum dry film thickness for either the 3
or 4 coat system shall be 5 mils.

K. Disinfection, Testing and Guarantee: After painting has been
completed, the tank shall be filled to the overflowing level with water
to which sufficient chlorine is added to produce a concentration of 40
to 50 ppm. Chlorine shall be applied as specified in Section 15041. The
disinfecting solution shall be retained for 24 hours. This 24 hour
period will also constitute the required test for tank leakage. Any
leaks which are disclosed in the test shall be repaired. After the
holding period, the highly chlorinated water in the tank shall be
drained and wasted.

1\. The Contractor shall guarantee the reservoir against any defects in
design, materials or workmanship for a period of one year from the date
of acceptance of the work by the Contracting Officer, and shall make any
repairs or replacements necessitated by such defects without cost to the
Government.

[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. Contractor shall include consideration for this item in
the bid price for other items of the Contract.

END OF SECTION