SPECIFICATIONS FOR PREFABRICATED METAL BUILDINGS TABLE OF CONTENTS

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-05601A000100220014-1
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 25
• Document Creation Date: December 9, 2016
• Document Release Date: April 24, 2001
• Sequence Number: 14
• Content Type: REQ

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STATINTL
SPECIFICATIONS FOR
PREFABRICATED METAL BUILDINGS
TABLE OF CONTENTS
PAGE
01 SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . 1
02 APPLICABLE PUBLICATIONS . . . . . . . . . . . . . . . . 1
a. Federal Specifications . . . . . . . . . . . . . . . 1
b. Military Specifications . . . : . . . . . . . . . . 2
c. American Concrete Institute Publication . . . . ... . 2
d. American Iron & Steel Institute Publication . . . . . 2
e. American Society for Testing & Materials Standards 2
f. Architectural-Aluminum Manufacturers Association
Publication . . . . . . . . . . . . . . . . . . . . . 2
g. Metal Building Manufacturers Association Publication. 2
h. National Fire Protection Association Publication . . 3
i. Steel Window Institute Publication . . . . . . . . . 3
03 SHOP DRAWINGS . . . . . . . . . . . . . . . . . . . . . . 3
04 GENERAL REQUIREMENTS . ' . . . . . . . . . . . . . ... 3
a. Types . . . . . . . . . . . . . . . . . . . . . . . . 3
b. Gages . . . . . . . . . . . . . . . . . . . . . . . . 3
c. Assembly .. . . . . . . . . . . . . . . . . . . . 3
d. Packing for Shipment . . . . . . . . . . . . . . . . 4
05 DESIGN REQUIREMENTS . . . . . . . . . . . . . . . . . ... 4
a. Normal Design Loads . . . . . . . . . . . . . . . . . 4
b. Auxiliary Loads . . . . . . . . . . . . . . . . . . . 4
c. Design of Foundations . . . . . . . . . . . . . . . 4
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06 STEEL FRAMEWORK . . . . . . . . . . . . . ... . . . . . . 4
a. Erection . . . . . . . . . . . . . . . . . . . . . . .5
b. Rigid Frame or Column Bases or Sill Members . . . . . 5
07 PANELS FOR WALL CONSTRUCTION . . . . . . . . . . . . . . 5
a. Steel Panels . . . . . . . . . . . . . . . . . . . 5
b. Insulated Wall Panels . . . . . . . . . . . . . . . . 5
08 PANELS FOR ROOF CONSTRUCTION . . . . . . . . . . . . . 6
a. Steel Roofing Panels . . . . . . . . . . . . . . . 7
09 FASTENERS . . . . . . . . . . . . . . . . . . . . . . . . 7
a. Fasteners for Securing Siding & Roofing Panels . . . 7
(1) Self-Tapping Screws . . . . . . . . . . . 8
(2) End-Welded Studs . . . . . . . . . . . . . . . . 8
(3) Bolted or Riveted Studs . . . . . . . . . . 8
(4) Step Rivets . . . . . . . . . . . . . . . . 9
b. Fasteners for Interlocking Panel Siding . . . . . . 9
c. Fasteners for Securing Sidelaps, Endlaps & Flashings. 9
10 DISSIMILAR MATERIALS . . . . . . . . . . 9
a. Painting (Bituminous) . . . . . . . . . . . . 9
b. Painting (Zinc Chromate) . . . . . .?. . . ". . . 9
c. Nonabsorptive Gasket . . . . . . . . . . . . . . . . 9
d. Calking . . . . .., . . . . . . . . . . . . 9
11 METAL DOORS . . . . . 10
a. Steel Doors . . . . . . . . . . . . . . . . . . . . . 10
b. Frames for Hinged Doors . . . . . . . . . . . . . 10
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c. Hardware for Hinged Metal Doors . . . . . . . . . . 11
(1) Butt Hinges . . . . . . . . . . . . . . . . . 11
(2) Locksets . . . . . . . . . . . . . . . . . . . 11
(3) Door Stops . . . . . . . . . . . . . . . . 11
(4) Chain Bolts . . . . . . . . . . . . . . . . . 11
(5) Finishes . . . . . . . . . . . . . . . . . . . 11
(6) Metal Thresholds . . . . . . . . . . . . . . 11
d. Sheet-Metal Overhead Doors . . . . . . . . . . . . 11
e. Hardware for Overhead Doors . . . . . . . . . . . . 12
12 SHEET-METAL ACCESSORIES . . . . . . . . . . . . . . . . 12
a. Ridge Caps, Eave and Edge Strips, Fascia Strips,
Miscellaneous Flashings, and Other Sheet-Metal
Accessories . . . . . . . . . . . . . . . . . . . . 12
b. Gutters and Downspouts . . . . . . . . . . . . . . 12
c. Framed Air-Intake and Exhaust Louvers . . . . . . . 12
13 MISCELLANEOUS ACCESSORIES . . . . . . . . . . . . . . 12
a. Closure Strips . . . . . . . 12
b. Roof Joint Sealant . . . . . . . . . . . . . . . 13
c. Wall Joint Sealant . . . . . . . . . . . . . . . 13
14 SHOP PAINTING .. . . . . . . . . . . . . . . . . 13
15 PAINTING . . . . . . . . . . . . . . . . . . . . . . . 14
16 SAMPLES . . . . . 14
17 SUSPENDED CEILINGS . . . . . . . . . . . . . . . . . 14
a. Hangers . . . . . . . 14
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PAGE
b. Runner Channels . . . . . . . . . . . . . . . . . . 14
c. Hangers, Tie Wire, and Clips . . . . . . . . . . 15
18 ACOUSTICAL UNITS, PREFABRICATED . . . . . . . . . . . . 15
a. General . . . . . . . . . . . . . . . . . . . . 15
b. Materials . . . . . . . . . . . . . . . . . . . 15
c. Erection . . . . . . . . . . . . . . . . . . . . . 15
(1) General . . . . . . . . . ... . . . . . . . 15
(2) Ceilings . . . . . . . . . . . . . . . . . . . 15
19 PARTITIONS, MOVABLE 16
a. Scope . . . . . . . . . . . . . . . . . .. . 16
b. General . . . . . . . . . . . . . . . . . . . . . . 16
c. Materials . . . . . . . . . . . . . . . . . . . . . 16
(1) Extrusions . . . . . ... . . . . . . . . . . 16
(2) Enamel . . . . . . . . . . . . . . . . . . . 16
(3) Fastenings . . . . . . . . . . . . . . . . . . 16
(4) Insulating Fill . . . . . . . . . . . . . . . 16
(5) Primer . . . . . . ? . . . . . . . . . . . . . . 16
(6) Steel . . . . . . . . . . . . . . . . . . . 17
d. Materials List . . . . . . ... . . . . . . . . . 17
e. Shop Drawings . . . . . . . . . . . . . . . . . . . 17
f. Construction . . . 17
(1) Type A . . . . . . . . . . . . . . . . . . . 17
(a) Panels . . . . . . . . . . . . . . . . 17
(b) Posts . . . . . . . . . . . . . . . . . 18
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Post Covers . . . . . . . . . . . . . . .
Base . . . . . . . . . ?. . . . . . . . .
Plinths . . . . . . . . . . . . . . . .
Cornice . . . . . . . . . . . . . . . . .
End Fillers . . . . . . .. . . . . . . . .
Doorframes . . . . . . . . . . . . . .
Doors . . . . . . . . . . . . . . . .
Glass and Glazing . . . . . . . . . . .
g. Door Hardware . . . . . . . . . . . . . . . .
h. Finishes . . . . . . . . . . . . . . . . .
i. Installation ... . . . . . . . . . . . . . . .
20 INSULATION . . . . . . . . . . . . . . . . . . . . .
a. Scope . . . . . . . . . . . . . . . . . . . . .
b. Materials . . . . . . . . . . . . . . . . . . . .
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SPECIFICATIONS FOR
PREFABRICATED METAL BUILDINGS
(VERTICAL WALLS)
01 SCOPE: This sectio
complete. I covers prefabricated metal buildings,
02 APPLICABLE PUBLICATIONS:
the issues listed below
des , but The following ignation s referred publications of
indicated by form a part of to thereafter basic
y the references thereto: specification to to the
hereto; the extent
a.
Federal s ecifications;
DD-G-451a
& Am-1
FF-H-106a
& Am-g
& Int. Am-9
Glass, Flat and Corrugated
Glazing Mir , for
rors, and other uses
Hardware, Builder's; Locks and
Door-Trim
FF-H-00111b
H
(GSA-FSS)
Miscellan ouser's; Shelf and
FF-H-116c
Hi
& Am-4
nges, Hardware, Builder's
FF-H-121
Hardware, Builder's; Door-Closing
Devices
HH-I-562
& Int. Am-2
Insulation, Thermal
Block or Board , Mineral Wool,
d
a
QQ-S-698
n
(Molded
Pipe Insulation
Steel
Type)
& Am-1
,
Sheet and Strip, Low-Carbon
QQ-S-741a
& Am-1
TT-G-00410c
(GSA-FSS)
Steel Plates, Shapes and Bars,
Carbon, Structure
Glazing Compound, Sash
Back Bedding & F
g) for
l
TT-P-86c
& Am-4
ace G
azin
for Channel or Sto g? (Not
p Glazing)
Paint: Red-Lead-Base, Ready-Mixed
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TT-P-615b Primer Coating: Basic Lead Silicon
Chromate, Ready-Mixed
TT-P-636b Primer Coating, Synthetic Wood and
Ferrous Metal
TT-P-645 Primer, Paint, Zinc-Chromate, Alkyd Type
b. Military Specifications:
MIL-S-4174A Steel Sheet & Strip, Flat, Aluminum
Coated, Low Carbon
MIL-C-490A Cleaning & Preparation of Ferrous and
& Am-1 Zinc Coated Surfaces for Organic
Protective Coating
MIL-P-6883 Paint, Blended-Type, Coal-Tar-Pitch
Base, Bituminous
MIL-C-18969B Calking Compounds, Metal Seam and
Wood Seam
c. American Concrete Institute Publication:
ACI 318-63 Building Code Requirements for Rein-
forced Concrete
d. American Iron and Steel Institute Publication:
Light Gage Cold-Formed Steel Design Manual
(1962 Edition and Commentary)
e. American Society for Testing & Materials Standards:
A 93-63T Zinc-Coated (Galvanized) Iron or
Steel Sheets, Coils, and Cut
Lengths
E 96-63T Water Vapor Transmission of Materials
in Sheet Form
f. Architectural Aluminum Manufacturers Ass. Publication:
Aluminum Windows Specifications (January 1964)
g. Metal Building Manufacturers Association Publication:
Recommended Design Practices Manual (1963 Edition)
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h. National Fire Protection Association Publicatic:..
NFPA No. 220 Standard Types of Build.:ng
Cori Z'truction (May 1961)
i. Steel Window Institute Pabli.cation:
Recommended Standards for Sreel Windows, 1964
03 SHOP DRAWINGS and/or erection drawings and
manuals showing complete erection layouts, details, :-. ta1lav: Ern
instructions, and foundation details shall be subraitt -~d for
;.sproval in accordance with SPECIAL CONDITIONS. small
-ot be delivered to the site before the approved shop drrawi.,_;s
have been returned to the contractor. Details and layouts s'iall
show the structural framing and the location, lengths, and
markings of panels and other component parts to correspond
the sequence and procedure to be followed wh=.:_n L-Iscall.ing aitc
fastening the panels and component -parts. ` 'hh.e contractor
oe responsible for all errors of detailing and fabrication ann.:.
for the correct fitting of parts and accessories shown on the
stop drawings.
04 GENERAL REQUIREMENTS:
a. Types: The prefabricated metal buildings shall
:e single-unit, rigid frame type, as shown, of the quantity
and sizes listed below:
1 each
Transmitter Building
40 x 72 x 14
1 each
Power Plant Building
24 x 36- x 10
b. Gages specified for steel are U.S. Standard
c. Assembly: The size of the prefabricated compon.,ts
and the necessary field connections and fastenings requires ?`x
erection shall be such as will permit easy assembly by means
t
standard construction equipment and tools without the use of
special apparatus or appliances. Only standard size ard type
bolts, nuts, screws, washers, and other fastenings shall be
necessary for field erection except as specified otherwise
hereinafter. No fastenings shall be removable from the out--'
after building is erected. Each piece and part of the'asser.ibly
hall be clearly and legibly marked to correspond with pre-
viously prepared erection drawings, diagrams, and/or instruction
manuals. At least three complete sets of foundation drawing:;:,;
erection drawings, diagrams, or instruction manuals, includ.2,
anchorbolt plans, shall be provided for each building.
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d. Packing for Shipment: Prefabricated comp oaenLs,
sheets, panels, and other manufactured items shall be packed
for overseas shipment in such a manner as to prevent dama;?_
by moisture or handling. 05 DESIGN REQUIREMENTS: Unless specified otherwise
herein, the des'-.gri of prefabricated metal biidirgs shall be
in conformance with the Recommended Design Practices Manual
~}ublis .ed by the Metal Building Manufacturers
ssoci ~t .on.
The contractor shall submit for approval the engineering
design calculations and stress diagrams of structural or load-
-aring components of the buildiL.g and foundations.
a. Normal Design The vertical live loads,
in addition to the app icabl dead loads, shall be not less
---han 30 pounds per square foot, applied on the horizontal
projection of the roof structure. The wind load on the
buildings shall be 15 pounds per square foot propor-i_T.oned
and applied as horizontal and uplift velocity presures, in
conformance with the MBMA Recommended Design Practices Manual.
Combinations of all above factors should be considered.
b. Auxiliary Loads: Superimposed dynamic and/or
static loads such as suspended ceiling and future duct work
shall be applied in addition to the normal design loads and
shall be considered in combinations with normal design loads
:In conformance with the MBMA Recommended Design Practices
Manual.
c. Design of Foundations will be by others. Founda-
t..3n bolt templates will be furnished by Building Manufacturer
each structure.
06 STEEL FRAMEWORK: Connections shall be riveted,
welded, or bolted, as standard with the manufacturer. Bolted
connections shall be made with unfinished, turned, ribber, or
high-tensile-steel bolts as appropriate for each connection.
Types of bolts and their use shall be shown on shop or erection
drawings. Cold-formed steel less than 3/16 inch thick shall be
designed in conformance with the American Iron and Steel
Institute publication Light Gage Cold-Formed Steel Design
Manual. P:;-efabricated sections of the framework shall be
designed to assure easy packing, shipping, erection, and
assembly in a manner that will assure maximum strength and
rigidity. Structural members or structural assemblies having
cross-sectional areas and/or connections that differ from the
section and connections shown may be used, subject to approval
and provided that the structural properties of the proposed
framework are equal to or greater than the structural propear-:ies
of the framework shown. The contractor shall submit drawings
or diagrams showing details of the proposed prefabricated
system.
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a. Erection: Erection in the field will be by others.
b. Rigid Frame or Column Bases or Sill Members anchor
bolts shall be unpainted black steel furnished by the Building
Manufacturer for each structure. Any such items required to be
embedded in concrete will be supplied in sufficient time to
meet foundation schedule to be performed by others.
07 PANELS FOR WALL CONSTRUCTION: Panels shall be applied
with the ribs and other configurations in a vertical position.
Panels shall be supplied in the single lengths from base to
eave on walls up to 30 feet in height with no horizontal joints
except at the junction of door units, window units, louver
panels, and similar openings, at gable end-wall splices or
rake splices, and where a wall splice is needed for the-flash-
ing of attached structures. The maximum windload deflection
in siding and panels shall not exceed 1/180th of the span.
Endlaps for panels shall be not less than 4 inches. Walls
shall be closed at the base and eave, and around windows,
doors, framed louvers, and other similar openings by flashings
and/or formed closures to assure adequate weather-tightness.
Flashing or stops will not be required where weather-closed
or approved self-flashing panels or siding are used. Siding
panels shall be steel.
a. Steel Panels shall be zinc coated. Zinc-coated
sheets shall conform--
on orm to ASTM Specifications A 93. The weight
of zinc coating for all gages shall be 1.25 ounces per square
foot. Panels shall have either interlocking ribs or configu-
rations and shall be formed from steel of not less than 18
gage. Panels having interlocking ribs shall not be greater
than 16 inches wide, with interlocking ribs not less than 3
inches deep. The interlocking ribs of adjoining panels shall
be fastened together at the base and top of the panels and at
each girt by means of positive bolt and nut fasteners of a
type standard with the metal-building manufacturer. Configu-
rated panels shall have configurations not less than 1-1/2
inches deep, spaced not to exceed 12 inches on centers, or
z:.ot less than 3/4 inch deep, spaced not to exceed 6 inches
on centers. Sidelaps shall be interlocked or lapped one
configuration.
b. Insulated wall panels shall be approved factory
or field-assembled units and shall have a nominal coverage
width of not less than 12 inches. The panels-shall consist
of a central insulating core with metal interior and exterior
face sheets securely fastened together with rivets, bolts,
studs, snap-on fasteners, or other method of fastening that
is recommended by the manufacturer, including interlocking
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with basic wall units. The metal faces shall be steel, and
shall be uniformly separated by studs, bars, interlocking
ribs, or other approved means. Steel face sheets shall be
zinc-coated steel conforming to ASTM Specification A 93,
with weight of zinc coating for all gages 1.25 ounces per
square foot. The exterior and interior face sheets shall
be steel. The minimum gage for steel shall be 26. The
panels shall be constructed in a manner that will eliminate
condensation on the interior side of the panels. Joints
between panels shall be sealed with an approved joint-
sealant material as specified hereinafter. The U-factor of
the assembled panels shall not exceed .25. The cores of the
panels shall be insulation standard with the panel manufacturer.
Insulation shall be durable and shall retain the U-value
specified for the panels for the life of the metal sheets
used in fabricating the panels. In addition, the insulation
shall meet the following requirements:
(1) Insulation material shall be compatible
with adjoining-materials.
(2) Insulation material shall be nonrunning
and nonsettling. Uninsulated areas shall not be left in
panels subjected to vibration.
(3) Insulation material shall be unaffected
by extremes of-temperature and humidity and prolonged
periods of combination thereof.
(4) Insulation material shall be noncombustible
as defined by the National Fire Protection Association
Standard No. 220.
(5) Insulation material shall not furnish
food for nor harbor insects.
(6) Insulation material shall be odorless
and shall not promote growth of mold. The panels shall
be fastened to adjoining panels and to structural framework
by a method recommended by the panel manufacturer and
approved before the work is started. Fastening means will
be tamper proof from the exterior of the building.
08 PANELS FOR ROOF CONSTRUCTION: Roofing panels shall
be applied corrugations in the direction of the roof slope.
The maximum liveload deflection in roofing panels shall not
exceed 1/180th of the span. Sidelaps shall be laid away
from the prevailing winds, and sidelaps and endlaps of roofs
shall be sealed with roof joint sealant. The roof shall be
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flashed and/or calked at the ridge, at eaves and rakes, at
projections through the roof, and elsewhere as necessary to
make the roof weathertight. The flashing and/or calking
shall be accomplished in a manner that will assure complete
weathertightness and the method to be used shall be subject
to approval. Minimum endlaps for roofing and ridge caps
for pre-engineered and factory-punched laps shall be 6 inches;
other minimum endlaps shall be as follows:
6 inches for roof slopes not less than 4 in 12
72 inches for roof slopes not less than 3 in 12
Panel type roofs shall have slopes not less than 3 in 12.
Roofing panels shall be steel.
a. Steel Roofing Panels shall be zinc coated. Zinc
coated steel shall -conform to the requirements of ASTM Speci-
fication A 93. The weight of zinc coating for all gages shall
be 1.25 ounces per square foot. The roofing shall be the panel
type, having either interlocking ribs or configurations and
shall be formed from steel of not less than 26 gage. Panels
having interlocking ribs shall be no greater than 16 inches
wide, with the ribs not less than 3 inches deep. The inter-
locking ribs shall be upstanding, and self-tapping screws
shall be used to secure the panels to roof supports. Screws
will be tamper proof from outside. Configurated panels shall
have configurations not less than 12 inches deep, spaced not
to exceed 12 inches on centers or not less than 3/4 inch deep,
spaced not to exceed 6 inches on centers. Sidelaps shall be
not less than one configuration.
09 FASTENERS:
a. Fasteners for Securing Siding & Roofing Panels:
The installation of the fasteners shall be in
accordance with the manufacturer's recommendation. Unless
specified otherwise herein, the fasteners shall be either
self-tapping screws, end-welded studs, bolted or riveted
studs, or step rivets held by aluminum straps. Other types
of fasteners standard with the building manufacturer may be
provided if prior approval has been obtained. At the eave
line, fasteners for securing panels to structural framing
shall not exceed 6 inches on centers. For roof slopes of 4
in 12 and steeper, sidelap fasteners shall not exceed 16
inches on centers for the first three spaces up the roof
slope from the eave and shall not exceed 60 inches on centers
from this point to the ridge. Endlaps shall occur at
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structural members only and shall be fastened through structural
members, not to exceed 6 inches on centers; configurations and
corrugations in the zone of the 6-inch endlap shall be fastened
with a minimum of two fasteners per configuration or corrugation.
Fasteners for securing panels to structural framing at other
than eaves and endlaps shall be spaced not more than 12 inches
on centers. For roof slopes flatter than 4 in 12, where only
the deep configuration or the interlocking rib panels are
acceptable, the sidelap fasteners shall not exceed 15 inches
on centers for the first three spaces from the eave line and
shall not exceed 30 inches on centers from this point to the
ridge. Endlaps shall occur at structural members only and
shall be fastened to structural members with not less than
three fasteners per lineal foot; configurations in the zone of
the 6-inch endlap shall be fastened with a minimum of two
fasteners per configuration. The fasteners shall meet the
following requirements:
(1) Self-tapping screws shall be cadmium plated
or corrosion-resisting steel. The screws shall be No. 14,
type B, with recessed hex heads and shall be provided with
composite metal and polymerized chloroprene washers. The
washers shall be dished or cupped to assure a tight seal and
shall have a minimum outside diameter of 5/8 inch. The metal
portion of the washers shall be not less than 0.04 inch thick
and the polymerized chloroprene portion shall be not less than
0.0625 inch thick. The metal portion of the washers shall be
a material that is compatible with the roofing or siding being
applied.
(2) End-welded studs shall be either the capped
or the flattened-hea type. The capped type shall consist of
a one-piece corrosion-resisting steel stud or a cadmium-plated
steel stud, having a 5/16 inch-diameter base and a 3/16 inch
serrated shank. After the metal sheets are laid over the
studs and impaled with a rubber hammer, an aluminum cap shall
be driven onto the serrated shank to form a weathertight seal.
The flattened-head type shall be a composite stud consisting
of an aluminum shank with a corrosion-resisting base. After
the metal sheets are laid over the studs and impaled with a
rubber hammer, a polymerized chloroprene washer and an aluminum
collar shall be applied and the head of the shank shall be
flattened to form a weather-tight seal.
(3) Bolted or riveted studs: Cadmium-plated or
corrosion-resisting-steel studs shall be bolted or riveted to
the structural steel supports. The studs shall consist of a
base not less than 5/16 inch in diameter. After the metal
sheets are laid over the studs and impaled with a rubber
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hammer, drive caps or screwcaps shall be applied to the shank
in a manner that will form a weathertight seal. Caps used
with roofing or siding shall be of a compatible material.
(4) Step rivets shall be fastened to supports by
means of preformed a uminum straps. The strap shall fit over
the base of the rivet and shall be fastened to the supports by
bending the ends of the strap around the edges of the supports.
After the metal sheets are laid over the studs and impaled
with a rubber hammer, a polymerized chloroprene washer and an
aluminum collar shall be applied and the head of the rivet
shall be flattened to form a weathertight seal.
b. Fasteners for interlocking panel siding, shall be
positive bolt-and-nut fasteners as approved and o size-and
type recommended by the siding manufacturer. Fasteners shall
be installed in accordance with the siding manufacturer's
instruction.
c. Fasteners for securing sidelaps, endlaps, and
flashings shall be type A sheet metal screws, and shall be
cadmium-plated, corrosion-resisting, or zinc coated for use
with steel roofing and siding. The screws shall be equipped
with composite metal and polymerized chloroprene washers,
and shall be installed in accordance with the manufacturer's
recommendation. Other types of fasteners standard with the
building manufacturer may be provided subject to approval.
10 DISSIMILAR MATERIALS: Incompatible metal surfaces
shall be kept from direct contact by one of the following
methods:
a. Painting the incompatible metal with a coating
of heavy-bodied bituminous paint conforming to Military
Specification MIL-P-6883.
b. Painting the incompatible metal with a prime
coat of zinc-chromate primer conforming to Federal Specifi-
cation TT-P-645 followed by one or two coats of other
suitable protective coating excluding those containing lead
pigmentation.
c. An approved nonabsorptive gasket.
d. An approved calking placed between the incom-
patible metals.
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 Approved For Release 2Q01/05/11 : CIA-RDP78-05601A00010022Q014-1
11 METAL DOORS: Steel doors and pressed-steel frames
shall be given a phosphoric acid treatment and one coat of an
approved rust-inhibitive primer of a type standard with the
manufacturer. Finish will be applied as specified under
PAINTING section.
a. Steel doors shall be heavy duty doors as shown
or specified. Inc.ustr al steel doors for heavy duty shall
have stiles, rails, and panels made of steel weighing not
less than 2.5 pounds per square foot (16 gage) and shall not
be less than 1-3/4 inches thick. Doors shall be flush type.
Astragals shall be provided on the active leaf of pairs of
doors. The metal doors shall be reinforced properly for the
application of hardware, and shall be drilled and tapped
according to templates. The completed doors shall be free
from twist, warp, and distortion, and shall fit the frames
with a minimum amount of clearance even though subjected to,
windloads of 15 pounds per square foot. Stiles and rails
shall be formed of seamless drawn steel tubing, of steel
plates welded together, or of pressed steel plates welded
together. Bottom rails, if required, shall not be less than
42 inches wide. The doors shall have smooth finished surfaces,
and corners and edges shall be rounded slightly. The edges
of lock stiles of the doors shall be beveled 1/8 inch in 2
inches. Metal drip moldings shall be provided at the bottom
of out-swinging doors in exterior walls except where weather-
stripped thresholds shall be provided.
b. Frames for Hinged Doors: Frames shall be formed
from low-carbon sheet or strip steel conforming to Federal
Specification QQ-S-698 and before forming shall weigh not
less than 2.50 pounds per square foot (16 gage) for heavy
duty doors. The frames shall be of a type standard with the
building manufacturer and shall be constructed to be coupled
or interlocked in an approved manner with adjoining wall-
covering material. The edges of the wall-covering material
at the sides of the frames shall be reinforced as necessary
to form a connection of strength and rigidity that adequately
meets design criteria including windloads up to 40 pounds per
square foot. Lintels above doorframes shall be contoured to
serve as combination framing and flashing. Doors and frames
may be shipped as a part of an assembled section or may be
assembled at the site. Cross-sectional samples or drawings
showing cross-sectional details of the proposed door frames
shall be submitted. Approved structural steel frames may be
provided in lieu of pressed-steel frames if such construction
is standard with the building manufacturer.
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c. Hardware for Hinged Metal Doors: Hardware necessary
for the comp ete finish o the hinged metal doors shall be pro-
vided and shall conform to Federal Specification FF-H-106,
FF-H-111, FF-H-116, and FF-H-121, except as specified otherwise
herein.
(1) Butt Hines shall be full surface, type T2155
with channel frame and half surface, type T2139 with pressed-
steel frame. Hinges for doors requiring wide throw shall be
swing-clear, type T2161, half mortise and type T2164, full
surface. Three hinges shall be provided for each leaf of
exterior and interior doors. Hinge pins and other exposed
fastenings shall be the one-way type or other tamper proof type.
(2) Locksets for hinged metal doors shall be
series 86 with optional series 161 and series 140.
(3) Door Stops of a type for securing to floors
or walls, to suit the condition, and similar to types 1320E
and 1328E, shall be provided at locations where door knobs
will be in contact with the finished walls; lead shields or
expansion shields shall be provided for setting in concrete
construction.
(4) Chain Bolts, types 1021A and 1021B, size 6
inches, with top and bottom strikes, shall be provided for the
inactive leaf of double doors.
(5) Finishes: Hinges shall be of steel with
USP finish. Except where specified otherwise, other hardware
shall be solid or bronze, cast or wrought as required, and
shall have US4, US10, US26, or US26D finish, as standard with
the building manufacturer.
(6) Metal Thresholds shall be provided for all
exterior doors. Design shall preclude moisture, dust, and
cold air entrance.
d. Sheet-Metal Overhead Doors shall be of a type
standard with the-building manufacturer. The doors shall be
of the sizes shown on the plans, spring counter balanced for
manual operation. To be made of not less than 16 gage, formed
metal panel sections to produce a door not less than 2 inch
nominal thickness with a flush outside face. The steel shall
be galvanized with not less than 1.25 ounces of zinc per square
foot and chemically treated for paint adherence. Meeting rails
shall have rabbeted type weather joints. Bottom section of all
doors shall have neoprene weatherstrip. Top section of all
doors shall have adjustable seal strip. Doors shall be
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equipped with galvanized lift cables, hall bearing rollers,
and tumbler lock on two point locking device. Doors shall
be capable of remaining in any position from full open to
full close as desired.
e. Hardware for Overhead Doors: Hardware necessary
for the complete installation of overhead doors shall be
provided, including zinc coated steel tracks, brackets, and
end stops. Hardware items shall be approved types standard
with the door manufacturers.
'12 SHEET-METAL ACCESSORIES: Zinc coated steel acces-
sories shall be provided with zinc coated siding, roofing,
and panels.
a. Ridge Caps, Eave & Edge Strips, Fascia Strips,
miscellaneous as ings, and other sheet metal accessories,
shall be formed from the same material as, and of gage not
lighter than is used for the roof covering. Wall plates,
base angles or base channels, and other miscellaneous framing
members shall be either standard structural steel shapes or
formed from steel weighing not less than 4.375 pounds per
square foot (12 gage) before forming.
b. Gutters and Downspouts: Zinc coated steel
gutters and downspouts shall be formed of 24 gage steel
conforming to ASTM Specification A 93. The weight of zinc
coating for all gages shall be 1.25 ounces per square foot.
c. Framed Air-Intake and Exhaust Louvers, non-
mechanical type: Zinc coated steel louvers shall be made of
16 gage steel conforming to ASTM Specification A 93. The
weight of zinc coating for all gages shall be 1.25 ounces
per square foot. Suitable insect screens shall be provided.
13 MISCELLANEOUS ACCESSORIES:
a. Closure Strips shall be formed of compressed or
synthetic rubber, closed cell polyvinyl chloride, bituminous
impregnated materials, or metal of the same respective types
as the roofing and siding, as standard with the manufacturer
and as approved. Molded closure strips shall be free of open
voids and shall not absorb or retain water. Closure strips
shall be formed to match the corrugations or configurations
of the'roofing or siding being used, and shall be provided
where shown or specified and wherever necessary to provide
weathertight construction.
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b. Roof Joint Sealant: The material and application
of joint sealant shall conform to the following: Joint
sealant material of the type specified shall be provided to
make weathertight sidelaps and endlaps in metal roofing.
Sidelaps and endlaps shall be sealed with a bead of type II,
class B, ribbon-form sealant with performance characteristics
conforming to or exceeding the requirements in Military
Specification MIL-C-18969. Sidelaps for a distance of not
less than 9 feet up the roof slope from the eave line shall
be given a second bead of the same sealant. The material
shall be applied in accordance with the manufacturer's
printed instructions. Sealing material shall be used also
for sealing joints in and around sealing strips at ridges,
eaves, and valleys; at the bottom course in siding on
vertical surfaces; for dabbing bolt holes before inserting
fasteners; for flashings and corner boards; and elsewhere as
necessary to provide watertight construction.
c. Wall Joint Sealant shall be a polyisobutylene-
based, pressure sensitive tape or bead that will seal the
joint from water and will be weather resistant when applied
between two clean, dry surfaces under conditions of pressure
that will be encountered in the use specified. The sealant
shall withstand temperatures from -30 degrees F to 200 deg.
.F without loss of adhesion and without slipping, shall have
properties allowing the compound to move with the expansion
and contraction of the structure, and shall contain a cloth
or fiber insert. Sealant shall be supplied in rolls with a
removable paper or cloth backing.
14 SHOP PAINTING: Ferrous surfaces not specified
hereinbefore to be coated shall be solvent-cleaned to
remove oil and grease, then mechanically cleaned by power
wire brushing or blast-cleaning to remove loose rust, loose.
mill scale, and other foreign substances. Minor amounts of
residual rust that cannot be removed except by thorough
blast-cleaning and tight mill scale that cannot be removed
by applying a sharp knife to any edge will be permitted.
After cleaning, one coat of paint conforming to Federal
Specification TT-P-86, type I or II, or Federal Specification
TT-P-615, type I or II, shall be applied. At the discretion
of the Contracting Officer, the manufacturer's standard
system o preparation and painting may be accepted, provided
tests an independent laboratory have proved that such
system has performance characteristics at least equal to
those of the system specified herein. Shop-coated metal
shall be protected from corrosion before and after installa-
tion by treating corroded areas immediately upon detection.
Abraded or corroded spots on shop-coated surfaces shall be
wire-brushed and touched up with the same material as the
shop coat. Surfaces that will be in contact with roofing or
siding shall be given an additional field coat of the same
used for the shop coat.
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15 PAINTING:
a. Primer or pretreatment coat will consist of one
of the following:
(1) A phosphoric acid activated primer that
simultaneously phosphates the metal and deposits a primer
film bonded to both faces, minimum dry film thickness of
0.25 mil.
(2) A crystalline phosphate base coating for
use as a preparation for painting zinc coated steel or
aluminum surfaces.
b. Finish coat will consist of thermosetting synthetic
resin base coating that has been suitably plasticized, stabi-
lized against both heat and light, and pigmented to obtain
optimum performance. Minimum dry-film thickness will be 1
mil plus or minus 0.2 mil. Colors will be selected from
manufacturer's standard colors.
16 SAMPLES: At the direction of the Contracting Officer,
Building Manufacturer may be required to furnish samples or
representative sections of building materials, accessories,
fastening devices, hardware, etc., including those related
to partition or ceiling.
17 SUSPENDED CEILINGS: Unless otherwise indicated or
specified, the suspension system shall consist of 1k inch
funner channels and 3/4 inch furring channels, suspended by
hanger wires or strap.
a. Hangers shall be spaced not more than 48 inches
in one direction and 32 inches in the other direction unless
otherwise indicated or approved. Hangers at ends of runner
channels shall be not more than 8 inches from the wall.
Hanger wires shall be saddle-tied to structural members.
Flat iron or steel hangers shall be bolted with structural
system.
b. Runner channels shall be spaced not more than 42
inches on centers unless otherwise indicated or specified.
Each hanger wire shall be saddle-tied with tie wire to the
runner channels and secured by at least three turns around
the hanger wire. Runner channels shall be located within 6
inches of parallel walls and shall be cut short of abutting
walls 1/2 inch plus or minus 1/4 inch.
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c. Hangers, Tie Wire, and Clips:
(1) Hangers supporting runner channels shall be
soft steel wire not less than 0.1620 inch nominal diameter
(8 gage), conforming to Federal Specification QQ-W-461, steel
number 1010, class Z, zinc coating. Flat iron or steel straps,
3/32 by 7/8 inch size, coated with zinc, cadmium, or rust-
inhibiting paint may be substituted for the wire hangers.
(2) Tie wire and clips, rings, or other fastenings
used in lieu of tie wire shall be of corrosion-resisting steel,
conforming to Federal Specification QQ-W-423, composition 302,
304, or 316, condition A, or nickel-copper alloy conforming to
Federal Specification QQ-N-281, class A or B, annealed.condition.
18 ACOUSTICAL UNITS, PREFABRICATED:
a. General: Acoustical units of the types hereinafter
specified shall be installed in rooms and spaces where indicated,
generally in all spaces having finished ceiling. Shop drawings
of the acoustical installations shall be submitted for approval.
Suspension system shall be provided for until furnished.
b. Materials: Acoustical units installed shall conform
to Federal Specification SS-A-118, type II B, random perforation
pattern. Size and color shall be manufacturer's standard 24 x
48 off-white.
c. Erection:
(1) General: Building will be closed in and dry
before acoustical units are installed. The furring channels
or other basic suspension members shall be adequately leveled
before application of the suspension system and acoustic
material is begun.
(2) Ceilings: Acoustical units for ceilings and
other overhead areas shall be secured by mechanical fastenings
unexposed in the finished work. Suspension shall be accom-
plished by an approved standard mechanical suspension system
having its members locked together to prevent slippage and
providing a positive continuous support along at least two
edges of each acoustical unit, as recommended by the manu-
facturer of the acoustical units used. Mechanical suspension
system shall be leveled and so installed as to permit lateral
movement due to expansion without restraint by abutted or
parallel walls and partitions. Units shall be laid out in
symmetry about the centerlines of each room, space or panel
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unless otherwise indicated. Along the perimeter of the units
for each room, space, or panel, metal edge moldings or chan-
nels shall be provided unless otherwise indicated. Exposed-
to-view surfaces of metal-suspension-system members and edge
moldings shall be painted or finished in a color to match the
color of adjacent acoustical units.
19 PARTITIONS, MOVABLE:
a. Scope: This section covers movable partitions,
complete.
b. General: Movable partitions shall be standard
product of a manufacturer regularly engaged in the produc-
tion of this type of equipment. Partitions shall be designed
for erection on finished floor and shall be furnished in
manufacturer's standard size units. Panel units shall be
interchangeable with glazed or door units of similar size,
styles, and manufacture. The design of partition units
shall permit extension in any direction without removing
adjacent units or material above the cornice. Provision
shall be made for electrical wiring through vertical and
horizontal members. Partitions shall be so constructed as
to be readily disassembled entirely or in part for relocation.
Gages of steel specified are manufacturer's standard and are
the minimum acceptable. Ceiling braces shall be provided at
intervals.not exceeding 17 feet on partition runs by extending
the structural part or equivalent member to the overhead con-
struction. Except for glazing beads, fastenings shall be
concealed by use of springclip or snap-on devices.
c. Materials:
(1) Aluminum Alloy Extrusions: Federal Speci-
fication QQ-A-35 .
(2) Enamel: Federal Specification TT-E-491,
Class A or B.
(3) Fastenings, Bolt and Anchor: Federal
Specification FF-B- .
(4) Insulating Fill: Federal Specification
HH-I-521, Type I, II, or III.
(5) Primer: Federal Specification TT-P-659,
class A and class B.
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(6) Steel: Federal Specification QQ-S-636,
exposed sheet stems shall be stretcher-leveled, cold-rolled,
commercial-quality steel, with smooth clean surfaces.
d. Materials List: As soon as practicable and
before installation o any materials, the contractor shall
submit to the contracting officer a complete list, in
triplicate, of materials and equipment to be incorporated
in the work. This list shall include catalog numbers, cuts,
and such other descriptive data as may be required. No
consideration will be given to partial lists submitted from
time to time. Approval of materials will be based on the
manufacturer's published data subject to admission of com-
plete shop drawings indicating compliance with the contract
documents.
e. Shop Drawings: Shop drawings shall be submitted
to the Contracting Officer. The shop drawings shall indicate
partition arrangement in plan and elevation and shall show
complete details of construction including gages of metal,
anchors, fastenings, local conditions, and special fittings
and accessories.
f. Construction: The fabrication of movable parti-
tions of the typeindicated shall be in accordance with the
following specifications:
(1) Type A Partitions - insulated flush or
semiflush metal panel units with standard metal parts shall
be not less than 2-3/4 inches thick and not less than height
indicated (full ceiling height). The partition parts or
pilasters, relative to panel faces, shall be flush or offset
not more than 1/8 inch. Component parts of partition shall
conform to the following requirements:
(a) Panels shall be constructed of two steel
sheets not lighter t alb gage, secured to a steel frame by
spot welding, crimping, concealed bolting, or other approved
method that will assure a rigid and satisfying fastening
around the perimeter of the sheets. The sheets shall be
reinforced intermediately with especially shaped stiffeners
of steel not lighter than 24 gage, spaced not over 12 inches
on centers vertically, and spot welded to the sheet on 3-inch
centers. The space between the steel sheets shall be filled
with an insulating sound-deadening material that will give
the panel unit a sound-transmission loss of not less than 36
decibels at a frequency of 512 cycles. The insulating
material shall be mineral wool, fibrous glass, or other
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comparable, approved, noncombustible material. Panel units,
or manufacturer's standard construction reinforced by methods
other than by the stiffeners specified above, may be used if
approved in writing. Glazed openings of the size and loca-
tion indicated shall be provided. Glass shall be bedded on
felt or other especially prepared fabric, on plastic strips,
or in a plastic glazing compound, and shall be secured by
metal glazing beads neatly coped or mitered at corners and
secured with oval-head screws or concealed clip fasteners.
Telescopic-type glazing method for partitions may be employed
with written approval. Glass and glazing shall be in con-
formance with section GLASS AND GLAZING.
(b) Posts shall be formed shapes constructed
of sheet steel not lighter than 18 gage, punched for tie
bolts, slotted for clip connections, or provided with a snap-
on device for attachment of the panel units in any of four
directions. Convenient access to electrical wiring shall be
provided.
(c) Post Covers shall be formed of sheet
steel not lighter than 20 gage, with exposed surface flush.
Posts maybe relieved with slight V-shaped lines or offset
lines, and shall be flush with or offset from the panel not
more than 1/8 inch. Caps and pilasters shall be the snap-on
type, and shall be readily removable for access to electrical
wiring.
(d) Base shall be not less than 4 inches high
with a projection of -approximately 1/4 inch and shall be
formed of sheet steel not lighter than 18 gage. Base shall
be provided on both sides of partitions, shall be adjustable
to normal floor irregularities, and shall be readily removable'
in unit lengths to afford access to lay-in electrical wiring.
(e) Plinths, where required, shall be formed
of sheet steel not lighter than 18 gage and shall be adjust-
able vertically to the floor at the posts.
(f) Cornice shall be a simple cap or plain
cornice, designed to run continuous over the top of panels,
The cornice member shall form a lay-in-type wire raceway,
accessible from both sides of the partition, and shall be
of sheet steel not lighter than 18 gage. The cornice member
shall be in lengths best suited to the installation and
shall be jointed over reinforcing sleeves or strips. If
the cornice is a manufacturer's standard double-shell design,
the exterior faces of the cornice member shall be the gage
best suited to the forming operations required, and shall be
secured to the raceway core member by springclips or other
concealed fastenings. t
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(g) End fillers, where required, shall consist
of two steel sheets not lighter than 21 gage, secured to side
members formed of 18 gage steel, and if wider than 24 inches,
shall have horizontal stiffeners spaced and welded as speci-
fied for panels. End filler units shall be filled with
insulating material as specified for the panel units. End
filler units shall be made to fit snugly into an 18 gage steel
wall-channel member anchored to wall, and shall be secured to
the adjacent post by tit bolts, clips, or other fastening
devices in a manner similar to that employed by the manufacturer
for the fastening of wall and door-panel sections to posts.
(h) Doorframes shall be formed of sheet steel
not lighter than 18 gage, shall be rabbeted for doors,'and
reinforced at hinger, closer, and lock points with 11-gage
steel plate welded in place. Unless otherwise shown or
specified, the doorframes shall be drilled and tapped for the
template hardware specified. Cutouts for strike plates shall
be provided with dustboxes of sheet steel welded to the back
of the frame. Doorframes shall be fitted with an approved
continuous synthetic-rubber cushion strip on jambs and head
attached in a manner that will permit easy removal for replace-
ment. Partition units containing doors shall be adjustable
vertically and shall be capable of assembly on floors having
the normal deviations from a plane surface, without cutting
the doors. Doorway panels shall be insulated as specified
for other partition panels.
(i) Doors shall be 1-3/4 inches thick and
of the size indicateT.Doors shall be hollow-metal flush
type. Double doors shall be the same height and thickness
as single doors, and unless otherwise indicated, shall be
sized to fit approximately 5-foot-wide openings. Double
doors shall be provided with astragals. Faces of doors
shall be of 20-gage sheet steel, with stiles not lighter
than 18 gage. Glazing beads and muntins shall be no lighter
than 20 gage. Cutouts and sinkages for mortised hardware
shall be reinforced with 11-gage steel, and shall be drilled
and tapped for the application of template hardware. Clear-
ance of doors at jambs and head shall be 3/32 inch. Doors
shall be properly sound-deadened with insulation to produce
a sound-transmission loss approximately equal to that
specified for the panel units.
(j) Glass and glazing of movable partitions.
shall be in accordance with manufacturer's standard for the
partition furnished.
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g. Door hardware for metal partition doors shall be
manufacturer s standard.
h. Finishes: Metal surfaces shall be factory finished
and shall be clean and dry when finish is applied. All sur-
faces shall be given a baked on coat of enamel primer conforming
to Federal Specification TT-P-659, and exposed surfaces shall
be given a finish of synthetic baking enamel conforming to
Federal Specification TT-E-491, class B. Finish shall be
evenly applied and of uniform color. Unless otherwise indi-
cated, the finish color shall be medium French gray. The
base member shall be finished in a darker shade of the.same
color as the remainder of the partition.
i. Installation: The partitions and supporting end
and top bracing members required shall be for assembly and
erection in a neat and workmanlike manner with the least
possible drilling and cutting of the floors, ceilings, walls,
columns, and beams. Wall-channel members for anchoring the
ends of partition runs to building panel walls shall be
secured by approved means. The necessary fastening of
corner and intermediate post extension struts to suspended
ceiling constructions or overhead structural members shall
likewise be by approved means. Fastenings into reinforced
concrete, where required, shall be 3/16- or 7/32-inch
machine screws set in sleeve-type expansion shields.
'20 INSULATION:
a. Scope:
(1) Insulation shall be furnished for installa-
tion so as to insulate all parts of building from the outside.
In addition to roof and wall insulation, the suspended ceil-
ing will also be insulated.
(2) Vaporproof barrier of waterproof paper or
felt shall be placed on warm side of all insulation.
b. Materials:
(1) Insulation materials shall have inherent
qualities as follows: vapor and moisture resistant; toxic
to vermin, fungusproof and proof against other destroying
organisms. Insulation shall be non-volatile, odorless and
shall be a permanent product. It shall be fireproof and of
low conductivity. U-value shall lie between 0.10 and 0.13
maximum.
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