**November 21, 1997**

Contract \# **TW-0928**

SPECIAL SPECIFICATION

SECTION 08330-S

[ROLLING STEEL DOORS]{.underline}

[PART 1 - GENERAL]{.underline} [Page]{.underline}

1.01 Description Of Work 2

1.02 References 2

1.03 Submittals 3

1.04 Quality Assurance 3

1.05 Delivery, Storage and Handling 4

1.06 Project Conditions 4

PART 2 - PRODUCTS

2.01 Door Curtain 5

2.02 Guides, Supports and Accessories 5

2.03 Hardware 6

2.04 Counterbalancing Mechanisms: 6

2.05 Electric Door Operators 6

2.06 Locking 8

PART 3 - EXECUTION

3.01 Installation 9

SPECIAL SPECIFICATION

SECTION 08330-S

[ROLLING STEEL DOORS]{.underline}

# PART 1 - GENERAL

## 1.01 [DESCRIPTION OF WORK]{.underline}

A. [Description of Work]{.underline}: Provide and install each insulated
rolling steel door as scheduled and detailed in the construction
documents and as specified herein.

B. [Related Sections]{.underline}: Refer to the following sections for
related work:

1\. Division 3, Section \"Cast-In-Place Concrete.\"

2\. Division 5, Section \"Metal Fabrications.\"

3\. Division 9, Section \"Painting.\"

4\. Division 16, Section \"Electrical Work,\" for all electric door
requirements.

## 1.02 [REFERENCES]{.underline}

A. [American Society for Testing and Materials (ASTM)]{.underline}

A446 Specification for steel sheet, zinc-coated (galvanized) by the
hot-dip process, structural (physical) quality.

A525 Specification for general requirements for steel sheet, zinc-coated
(galvanized) by the hot-dip process.

A526 Specification for steel sheet, zinc-coated (galvanized by the
hot-dip process, commercial quality.

B. [National Electrical Manufacturer\'s Association (NEMA)]{.underline}

C. [Underwriter\'s Laboratory, Inc. (UL)]{.underline}

UL-305 Standard for Safety

D. [Factory Mutual (FM)]{.underline}

Fire Tests of Materials

## 1.03 [SUBMITTALS]{.underline}

[General]{.underline}: Submit the following in accordance with the
provisions of Section 1300-S, \"Descriptive Submittals:\"

A. [Product Data]{.underline}: Submit product data or manufacturer\'s
specifications and installation instructions for the following products.
Include laboratory tests, reports, and other data to show compliance
with specifications (including specified standards).

1\. Miscellaneous Steel (each type), including certified copies of mill
reports covering the chemical and physical properties.

2\. Expansion Anchors (each type), including shear tension capacities.

3\. Unfinished Threaded Fasteners (each type), including shear and
tension capacities.

4\. High-Strength Bolts (each type), including nuts and washers, and
shear and tension capacities.

5\. Miscellaneous Steel Primer Paint.

B. [Asbestos Free and Lead Paint Free Certification]{.underline}: Submit
manufacturer\'s written certification that all materials are free of
asbestos and lead paint.

C. [Shop Drawings]{.underline}: Submit shop drawings, including complete
details, weld symbols by AWS standards, showing size, length and type of
each weld, schedules, proposed weather seals and diagrams for
fabrication and assembly of rolling steel doors.

D. [Warranty]{.underline}: All materials and workmanship shall be
warrantied for a period of one year from installation date. Submit copy
of manufacturer\'s warranty.

# 1.04 QUALITY ASSURANCE

A. [Provide each rolling door]{.underline} as a complete unit produced
by one manufacturer, including frames, sections, brackets, guides,
weather-stripping, counterbalance mechanism, hardware, operators and
installation accessories to suit openings and headroom allowable.
Materials and equipment shall be the standard products of manufacturers
regularly engaged in the production of such material and shall be the
manufacturer\'s current and standard design.

B. [Inserts and Anchorages]{.underline}: Furnish inserts and anchoring
devices which must be set in concrete or built into steel framing or
masonry for installation of units. Coordinate delivery with other work
to avoid delays.

C. [Wind Loading]{.underline}: Provide rolling doors able to withstand a
25 pound per square foot (122.06 kgs/sq. meter) positive and negative
wind loading pressure.

## 1.05 [DELIVERY, STORAGE AND HANDLING]{.underline}

A. [Deliver materials]{.underline} to site at such intervals as to
ensure uninterrupted progress of work.

B. [Deliver anchor bolts and anchorage devices]{.underline}, which are
to be embedded in cast-in-place concrete or masonry, in ample time so
that work will not be delayed.

C. [Store materials]{.underline} to permit easy access for inspection
and identification. Keep steel members off ground by using pallets,
platforms, or other supports. Protect steel members and packaged
materials from corrosion and deterioration. If anchor bolts, connection
bolts and nuts become dry or rusty, clean and lubricate before use. Do
not store materials on structure in a manner that might cause distortion
or damage to members or supporting structures. Repair or replace damaged
materials or structures as directed.

## 1.06 [PROJECT CONDITIONS]{.underline}

[Field Measurements]{.underline}: Check actual locations of new and
existing walls and other construction to which rolling steel door must
fit. Verify the accuracy of field measurements before fabrication, and
show recorded measurements on final shop drawings.

# PART 2 - PRODUCTS

## 2.01 [DOOR CURTAIN]{.underline}

A. [Construct door curtain]{.underline} from interlocking slats
fabricated from galvanized structural quality carbon steel sheets in
compliance with ANSI/ASTM A446, Grade A, or ANSI/ASTM A526, with a
minimum yield strength of 33,000 psi (2320.13 kgs/sq. cm) and a minimum
G90 zinc coating which complies with ANSI/ASTM A525.

1\. [Steel Sheet Thickness]{.underline}: Unless otherwise indicated on
the drawings, 18 gauge (1.21 mm) steel sheets shall be used on exterior
and 24 gauge (.61 mm) steel sheets shall be used on interior surface of
slats.

2\. [Slat Faces]{.underline}: The exterior and interior slat faces shall
be flat unless otherwise noted.

B. [Alternate slats]{.underline} are to be fitted with endlocks. Provide
windlocks on doors over 14 feet (4.27 m) in width.

C. [The bottom slat]{.underline} is to be reinforced by two continuous
steel angles, mounted back to back, not less than 1/8 inch (3.3 mm)
thick.

D. [Insulate inner core of slats]{.underline} with rigid polyurethane
insulation 3/4 inch (19.05 mm) minimum thickness. The curtain shall have
a calculated \"R\" value of no less than 4.1.

E. [Shop clean and prime]{.underline} ferrous metal and galvanized
surfaces, exposed and unexposed, except faying and lubricated surfaces,
with red oxide, lead and cadmium-free, corrosion inhibiting primer
complying with performance requirements of FST7-P-664.

## 2.02 [GUIDES, SUPPORTS AND ACCESSORIES]{.underline}

A. [Guides]{.underline}: Guides shall be composed of three steel angles
no lighter than 3/16 inch (4.32 mm) thick, bolted with 3/8 inch (9.65
mm) diameter bolts to form a groove for the curtain. The wall angle
shall be continuous. The top of each guide shall be flared to facilitate
entry of the curtain and provided with cast iron stops.

B. [Brackets]{.underline}: Brackets shall be fabricated from steel
plates not less than 1/4 inch (6.35 mm) thick and of sufficient size and
thickness to support the total door weight. Brackets shall be fastened
to supporting wall angles by not less than two 1/2 inch (12.7 mm)
diameter bolts.

C. [Weather Seals]{.underline}: Provide a weather hood baffle, header
seal, bottom bar weather strip and continuous weather strips on both
inside and outside faces of the curtain attached to the guide. Brush
type weather seals are optional.

D. [Hood]{.underline}: Form hood to entirely enclose coiled curtain and
operating mechanism at opening head and act as weather seal. Roll and
reinforce top and bottom edges for stiffness. Provide closed ends for
surface-mounted hoods. Provide intermediate support brackets as required
to prevent sag. Fabricate hood of not less than 24 gauge (.61 mm) hot
dip galvanized steel sheet with G90 zinc coating, complying with ASTM
A525. Phosphate treat before fabrication.

E. [Hood Baffle (Fire Rated Door)]{.underline}: All fire rated doors
shall be installed with a flame and smoke baffle activated into position
by electromechanical design or by fusible links. Baffle shall be
fabricated with not less than 24 gauge (.61 mm) hot dip galvanized steel
sheet with G90 zinc coating, complying with ASTM A525. Phosphate treat
before fabrication.

## 2.03 [HARDWARE]{.underline}

[Provide heavy duty, rust resistant hardware]{.underline} with
galvanized or stainless steel fasteners.

## 2.04 [COUNTERBALANCING MECHANISMS]{.underline}

[Hang door assembly]{.underline} for operation by torsion spring
counterbalance mechanism. The barrel shall not be less than 4 inch
(101.6 mm) diameter steel tubing and designed to limit maximum
deflection to 0.03 inches (.76 mm) per foot (.3 m). Oil tempered torsion
springs shall be capable of correctly counterbalancing the weight of the
curtain. Springs shall be adjusted by means of an adjusting tension
wheel.

## 

## 2.05 [ELECTRIC DOOR OPERATORS]{.underline}

A. [Where indicated on the drawings,]{.underline} either by note,
drawing or circuitry, furnish electric door operator assembly of size
and capacity recommended and provided by door manufacturer complete with
electric motor and factory-prewired motor controls, worm gear reduction
unit, solenoid operated brake, clutch, remote control stations, limit
switches and control devices.

B. [Provide hand operated disconnect]{.underline} or mechanism for
automatically engaging sprocket chain operator and releasing brake for
emergency manual operation. Include interlock device to automatically
prevent motor from operating when emergency sprocket is engaged.

C. [Design operator]{.underline} so that motor may be removed without
disturbing limit-switch adjustment and without affecting emergency
auxiliary operator.

D. [Electric Motors]{.underline}: Provide 208 VAC, three phase,
high-starting torque, reversible, constant duty, Class A insulated
electric motors with overload protection, unless otherwise specified.
Motor shall be sized to move door in either direction, from any
position, at not less than 2/3 foot (.2 m) or more than 1 foot per
second (1.10 km/hr). Power unit shall be self-locking and capable of
holding the door in any position in case of failure of the
counterbalancing spring.

1\. [Magnetic Starter]{.underline}: Provide a full-voltage, reversing,
across the line magnetic starter with three integral melting alloy type
thermal overload relays to open the control circuit when any one of the
three overload relays open on excessive motor current.

These overload relays shall be located in the reversing motor starter
housing and shall be manufactured by the starter manufacturer.

2\. [Remote Control Station]{.underline}: Provide momentary contact,
three button control station with heavy duty, oil tight, push button
controls labeled \"open,\" \"close,\" and \"stop.\"

a\. Provide interior units, full-guarded, surface mounted, heavy duty,
with general purpose NEMA Type 1 enclosure, where shown on plans. 3.
[Limit Switches]{.underline}: Provide positive chain drive screw type
limit switch, enclosed in electrical control box, easily accessible for
precision setting. Limit switches will remain in time when emergency
chain hoist or disconnect is used and door is operated manually.

4\. [Automatic Reversing Control]{.underline}: Furnish each door with
automatic safety switch, extending full width of door bottom, and
located within neoprene or rubber astragal mounted to bottom door rail.
Contact with switch shall immediately reverse downward door travel.

a\. Furnish manufacturer\'s standard take-up reel or self-coiling cable.

b\. Provide electrically actuated automatic bottom bar.

5\. [Control Transformer]{.underline}: Provide a control transformer, if
required, to obtain a 120 or 24 volt AC control voltage, unless
otherwise noted on the drawings.

The transformer shall have the neutral side solidly grounded to the
housing around the starter, and shall be fused on the secondary side.

E. [Terminals]{.underline}: All equipment shall be supplied with
terminals suitable for use with copper wire.

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## 2.06 [LOCKING]{.underline}

A. [Electrically operated doors]{.underline} shall be locked by a
solenoid operated brake.

# PART 3 - EXECUTION

## 3.01 [INSTALLATION]{.underline}

A. [All doors]{.underline}, complete with associated hardware, shall be
installed by the manufacturer or authorized dealer specializing in the
sale, service and installation of rolling steel doors in accordance with
manufacturer\'s installation instructions.

B. [Upon completion of installation]{.underline}, including work by
other trades, lubricate, test and adjust door to operate easily, free
from warp, twist, or distortion, and with weathertight fit for entire
perimeter.

END OF SECTION