FORMED COLD ROLLED SECTIONS

Specifications - Formed Cold Rolled Sections

WINDOWS FROM FORMED COLD ROLLED SECTIONS

Introduction

These windows are made by mechanically forming various profiles or shapes from 20 gauge low carbon cold rolled steel. Various shapes are then combined to form frame assemblies and ventilator assemblies. Windows from cold rolled steel are defined and categorized as commercial and industrial windows with a minimum combined weight of frame and ventilator of 2.75 lbs. per lineal foot and capable of passing a structural load test of 30 lbs. per square foot.

Material

Sections to be used in the manufacture of these windows shall be composed of ASTM A653 low carbon cold rolled formed steel sections with a thickness of 20 gauge and shall be so constructed that the glass in each window shall lie in the same plane within a tolerance of 1/4". The size of the frame and ventilator members shall be as follows:

a. Neither ventilator nor supporting frame shall have depth, front to back, of less than 1-1/4".

b. Muntins - Tee shaped face (min.) 1-1/4".

Construction

a. Frame and ventilator sections shall be cold formed and members shall be mitered and key cornered.

b. A butyl sealant shall be applied and corners shall be mechanically fastened so as to create a close fit.

c. Optional weatherstripping.

1. All operable windows shall be provided with weatherstripping, such that when tested in the closed and locked position in accordance with ASTM E-283 before leaving the factory, the air infiltration shall not exceed 0.37 cubic foot per minute per foot of crack length when subjected to a pressure differential across the window of 6.24 lbs. per square foot equivalent to a wind velocity of 50 miles per hour.

2. All operable windows shall be provided with weatherstripping, such that when tested in the closed and locked position in accordance with ASTM E331, no water penetrates for 15 minutes when a window is subjected to a rate of flow of 5 gal./hr./sq. ft. with a pressure differential across the window at 2.86 PSF.

Horizontal and Vertical Sliders

a. Single and double hung sash shall be fully counter-balanced at any desired position by means of adjustable balance mechanisms.

b. Horizontal sliding windows shall be operable with single sash or double sash style as specified.

Fire Rated Windows

Fire rated or labeled windows are used in window openings where it is necessary to restrict the spread of fire and smoke within buildings, whether from interior fire or from external fire. The determination as to where a fire rated window is required is governed by the building code and federal and state laws. The architect should follow these codes. Individual manufacturers should be contacted to determine which of their windows meet the fire rated window requirements.

General

Only labeled windows shall be used in window openings. The label on 3/4 hour fire windows for wall openings will stipulate testing laboratory. Fire rated windows shall conform to applicable specification of ASTM E163 and NFPA Standard 80.

Glass

Only labeled fire protection rated glazing material shall be used in fire windows. The individual glazing material exposed area shall not exceed 1296 sq. in. with no dimension exceeding 54 in. unless otherwise tested. Consult window manufacturer. When continuous glazing angles or channels are used to hold glass in a window, these continuous members must be steel.

Maximum Size Opening

Heavy intermediate, heavy custom, cold rolled, and industrial windows will be used for openings not exceeding 84 sq. ft. in area with neither dimension exceeding 12 ft. When multiple units are installed, the distance between unprotected vertical steel mullions shall not exceed 7 ft. Standard intermediate types may be used for openings not exceeding 60 sq. ft. in area with neither dimension exceeding 10 ft. When multiple units are installed, the distance between unprotected steel mullions shall not exceed 6 1/2 ft.

Hardware

Operable fire windows shall have manufacturer's standard approved hardware.

Installation

Fire windows must be securely fastened to the wall and be capable of resisting all wind and other stresses for which the window was designed. The window manufacturer is not responsible for fire rating of adjacent walls.

Steel Casement Doors

Casement doors can be single or double swing doors fabricated from window sections previously described and may be designed to open in or to open out. Doors can be manufactured from either hot rolled steel sections or cold formed sections. These doors offer narrow sightlines and can be used for interior or exterior applications. Hardware availability includes hinges, latching systems, thresholds, closers and door holders. Doors can be designed with custom lock boxes and kick panels. For material, finishes, construction, glazing, installation, and accessories, see applicable sections.

Formed, Steel Construction Doors

Custom formed steel construction doors and perimeter framing are intended for heavy traffic entrances. Hollow construction doors offer seamless stile faces and design flexibility to accommodate required sightline and hardware concealment. Hot rolled steel or formed steel muntins are available. Glazing beads are furnished and the door stiles may be filled with an insulating material. Hardware availability includes hinges, latching systems, thresholds, closers and door holders.For material, finishes, construction, glazing, installation and hardware, contact SWI for specifications and manufacturers.

FIXED, PROJECT-IN, PROJECT-OUT, SIDE HUNG-OUT, SIDE HUNG-IN, VERTICAL SLIDER, HORIZONTAL SLIDER

PART 1 – GENERAL

Work Included
Furnish and install cold-formed steel windows as shown in the contract drawings. Work shall include but not be limited to steel windows (fixed, project-in, project-out, side hung-in, side hung-out, vertical slider, horizontal slider), trim, anchors and factory applied finishes (if required).

Related Work
A. Glass, glazing, and glazing materials: Section 08800
B. Perimeter caulking and sealing: Section 07900
C. Miscellaneous structural items: Section 05500

Quality Assurance, Performance Requirements
Weather-stripped windows shall meet or exceed the following standards:

Air Infiltration Test

ASTM E283-04(2012) – Maximum air infiltration
0.37 CFM/FT of crack length with a pressure differential across the windows of 6.24 PSF (50 MPH).

Water Penetration Test

ASTM E331-00(2016) – No water penetration for 15 minutes when the window is subjected to a rate of flow of 5 Gal./Hr./Sq.Ft. with a pressure differential of 2.86 PSF (33 MPH).

Structural Requirements

ASTM E330-14 – Tested to the applicable design pressure specified on the job.

Non-weather-strip sections only need to meet structural requirements.

Submittals
Submit shop drawings showing window and installation details, including anchorage, fastening and recommended sealing methods. Show dimensioned elevations with opening and window sizes. Upon request, provide test reports for all pertinent standards.

PART 2 – PRODUCTS

Approved Manufacturers
Windows shall be provided by a manufacturer and/or distributor of steel windows whose products meet the Steel Window Institute's performance specifications, as set forth herein or in effect from time to time.

Materials
A. The frame and ventilator shall be composed of ASTM A653M-17 low carbon cold rolled formed steel sections with a minimum thickness of 20 gauge.
B. Windows shall be defined and categorized as commercial and industrial windows with a minimum combined weight of frame and ventilator of 2.75 lbs. per linear foot.
C. The frame and ventilator sections shall have a minimum front to back depth dimension of 1- 7/8". Maximum recommended ventilator sizes are as follows (W x H):

Delete listings below, not required:
Casement (in our out): 2.5 ft. x 6.0 ft.
Projected (in or out): 5.0 ft. x 3.0 ft.
Vertical Slider: 4.6 ft. x 4.0 ft.
Horizontal Slider: 3.0 ft. x 6.0 ft.

D. Muntin bars shall have a tee shaped face min. of 1-1/4".
E. Glazing beads shall be cold rolled steel with a minimum thickness of 20 gauge.
F. Weather stripping shall be extruded vinyl, EPDM or silicone.
G. Hardware shall be as follows:

Delete listings below, not required:

Project-In
a. Ventilators shall be hung on either steel balance arms or heavy-duty steel or stainless steel three or four- bar hinges located at each jamb.
b. Bronze or steel cam latch or spring catches located at the head of the ventilator.
Project-Out
1. Ventilators shall be hung on either steel balance arms or heavy-duty steel or stainless steel three or four- bar hinges located at each jamb.
2. Bronze or steel cam latch located at the top rail of the ventilator.
Side Hung/Swing-Out Casement
a. Ventilators shall be hung on either steel, malleable iron or aluminum- bronze hinges with non-ferrous or galvanized pins and bushings. Hinges shall be close or extension type.
b. Bronze or steel cam latch located at the jamb of the ventilator.
Side Hung/Swing-In Casement
a. Ventilators shall be hung on either steel, malleable iron or aluminum- bronze hinges with non-ferrous or galvanized pins and bushings. Hinges shall be close or extension type.
b. Bronze or steel cam latch or spring catch located at the jamb of the ventilator.
Vertical Slider
a. Single and double hung ventilators shall be fully counter-balanced at any desired position by means of adjustable balance mechanisms.
b. Bronze or steel lift handle located at the sill of the ventilator.
c. Bronze or steel sweet catch located at the ventilator meeting rails.
Horizontal Slider
a. Ventilator supported by stainless steel or bronze rollers that are guided by a track either in the frame head or sill.
b. Bronze or steel lift handle located at the jamb of the ventilator.
c. Bronze or steel sweep catch located at the ventilator meeting rails.
Insect Screens
a. Insect screen frames shall be formed electro-galvanized or stainless steel having a minimum thickness of 0.032", or of formed or extruded aluminum having a minimum thickness of 0.040".
b. Screens shall be rewireable with 18 x 16 mesh wire cloth of aluminum or fiberglass. The nominal diameter of the cloth shall not be less than 0.011" for aluminum.

Fabrication
A. Fabricate windows in accordance with the approved shop drawings.
B. Frame and ventilator sections shall be cold formed and members shall be mitered and key cornered or fully welded. A butyl sealant shall be applied and corners shall be mechanically fastened so as to create a close fit.
C. Muntin bars shall be true muntins and be continuous from head to sill and jamb to jamb except that bars in one direction may be discontinuous if they are notched and securely fastened at the intersection. Muntins shall be mechanically fastened to the frame or ventilator sections.
D. All windows shall be designed for either inside or outside glazing.
E. Hardware shall be as follows:

Delete listings below, not required:

Project-In
a. Furnish two cam latches or spring catches for ventilators exceeding 4'- 8" in width.
b. If the cam latch or spring latch is more than 6'-6" above the floor level, hardware designed for pole operation should be furnished.
Project-Out
a. Furnish two cam latches for vents exceeding 4'-8" in width.
b. If the cam latch is more than 6'-6" above the floor level, hardware designed for pole operation should be furnished.
Casement Swing-In
a. Two hinges per ventilator shall be furnished. For ventilators exceeding 5'-6" in height, three hinges shall be furnished.
b. One cam latch per ventilator shall be furnished. For ventilators exceeding 5'-6" in height, two cam latches shall be furnished.
Casement Swing-Out
a. Two hinges per ventilator shall be furnished. For ventilators exceeding 5'-6" in height, three hinges shall be furnished.
b. One cam latch per ventilator shall be furnished. For ventilators exceeding 5'-6" in height, two cam latches shall be furnished.
Vertical Slider
a. One lift handle for lower ventilator shall be furnished. For ventilators exceeding 48" in width, two lift handles shall be furnished.
b. One sweep catch per window shall be furnished. For ventilators exceeding 48" in width, two sweet catches shall be furnished.
Horizontal Slider
a. Each ventilator to be provided with two roller mechanisms.
b. One lift handle for each moveable ventilator shall be furnished.
c. One sweep catch per window shall be furnished. For ventilators exceeding 48" in height, two sweep catches shall be furnished.

F. Insect Screens

Screens with hinged or sliding wickets shall be provided.
The wire cloth shall be held taut with removable spline.
Screens shall be removable from window, held in place by clips.

G. Finish

All cold rolled sections shall be pretreated, epoxy or zinc coated, followed by manufacturer's standard finish.

PART 3 – EXECUTION

Inspection
A. Window opening shall conform to details and dimensions shown on the approved shop drawings.
B. Conditions that may adversely affect the window installation must be corrected by the General Contractor prior to installation.

Installation
A. Windows specified under this section shall be installed by experienced personnel.
B. Install windows in strict accordance with the approved shop drawings and all local, state, and national laws and building codes.
C. Set windows plumb, level, and true to line, without warp or rack of frames or ventilators.
D. Anchor windows securely to surrounding construction with approved fasteners.
E. The exterior joints between the windows, trim and mullions shall be properly sealed watertight with an approved sealant and be neatly pointed.
F. Adjust ventilators to operate smoothly, free from twist, and to be watertight when closed and locked.
G. Any abraded surface of the window finish shall be cleaned and touched up with air dry paint, as approved and furnished by the window manufacturer, in a color to match the factory applied finish.

Cleaning
A. The General Contractor shall be responsible for protecting the windows and related materials during storage on the job and during and after installation.
B. Window installer shall leave the window surfaces clean after installation, exercising care to avoid damage to protective coatings and finishes.
C. Any protection necessary due to the cleaning of materials adjacent to the windows shall be the responsibility of the General Contractor.

FIRE RATED – FIXED, PROJECT-IN, PROJECT-OUT, SIDE HUNG-OUT, SIDE HUNG-IN, VERTICAL SLIDER, HORIZONTAL SLIDER

PART 1 – GENERAL

Work Included
Furnish and install cold-formed fire rated steel windows as shown in the contract drawings. Work shall include but not be limited to steel windows (fixed, project-in, project-out, side hung-in, side hung- out, vertical slider, horizontal slider), trim, anchors and factory applied finishes (if required).

General
Fire rated or labeled windows are used in window openings where it is necessary to restrict the spread of fire and smoke within buildings, whether from interior fire or external fire. The determination as to where a fire rated window is required is governed by the building code and federal and state laws. The architect should follow these codes. Individual manufacturers should be contacted to determine which of their windows meet the fire rated window requirements.

Only labeled windows shall be used in window openings requiring fire rated windows. The label on 3/4 hour fire windows for wall openings will stipulate testing laboratory. Fire rated windows shall confirm to applicable specification of NFPA 257-17 and NFPA 80-16.

Maximum Size Opening
Heavy intermediate, heavy custom, cold rolled, and industrial windows will be used for openings not exceeding 84 sq. ft. in area with neither dimension exceeding 12 ft. unless otherwise tested. When multiple windows are installed, the distance between unprotected vertical steel mullions shall not exceed 7 ft.

Standard intermediate types may be used for openings not exceeding 60 sq. ft. in area with neither dimension exceeding 10 ft. unless otherwise tested. When multiple units are installed, the distance between unprotected steel mullions shall not exceed 6 ft.

Related Work
A. Glass, glazing, and glazing materials: Section 08800
B. Perimeter caulking and sealing: Section 07900
C. Miscellaneous structural items: Section 05500

Quality Assurance, Performance Requirements
Weather-stripped windows shall meet or exceed the following standards:

Air Infiltration Test

ASTM E283-04(2012) – Maximum air infiltration
0.37 CFM/FT of crack length with a pressure differential across the windows of 6.24 PSF (50 MPH).

Water Penetration Test

ASTM E331-00(2016) – No water penetration for 15 minutes when the window is subjected to a rate of flow of 5 Gal./Hr./Sq.Ft. with a pressure differential of 2.86 PSF (33 MPH).

Structural Requirements

ASTM E330-14 – Tested to the applicable design pressure specified on the job.

Non-weather-strip sections only need to meet structural requirements.

Construction
Operable fire rated windows shall be provided with a mechanism that will allow the ventilator to self close and remain closed at a specified temperature (typically 165° F).

PART 2 – PRODUCTS

Approved Manufacturer
Windows shall be provided by a manufacturer and/or distributor of steel fire rated windows whose products meet the Steel Window Institute's performance specifications, as set forth herein or in effect from time to time.

Delete listings below, not required:

Casement (in or out): 2.5 ft. x 6.0 ft.
Projected (in our out): 5.0 ft. x 3.0 ft.
Vertical Slider: 4.6 ft. x 4.0 ft.
Horizontal Slider: 3.0 ft. x 6.0 ft.

D. Glass

Only labeled fire protection rated glazing material shall be used in fire rated windows. The individual glazing material exposed area shall not exceed 1,296 sq. in. with no dimension exceeding 54 in. unless otherwise tested. Consult window manufacturer. When continuous glazing angles or channels are used to hold glass in a window, these continuous members must be steel.

E. Muntin bars shall have a tee shaped face min. of 1-1/4".

F. Glazing beads shall be cold rolled steel with a minimum thickness of 20 gauge.

G. Weather stripping shall be extruded vinyl, EPDM or silicone.

H. Hardware shall be as follows:

Project-In
a. Ventilators shall be hung on either steel balance arms or heavy-duty steel or stainless steel three or four- bar hinges located at each jamb.
b. Bronze or steel cam latch or spring catches located at the head of the ventilator.
Project-Out
a. Ventilators shall be hung on either steel balance arms or heavy-duty steel or stainless steel three or four- bar hinges located at each jamb.
b. Bronze or steel cam latch located at the bottom rail of the ventilator.
Side Hung/Swing-Out Casement
a. Ventilators shall be hung on either steel, malleable iron or aluminum- bronze hinges with non-ferrous or galvanized pins and bushings. Hinges shall be close or extension type.
b. Bronze or steel cam latch located at the jamb of the ventilator.
Side Hung/Swing-In Casement:
a. Ventilators shall be hung on either steel, malleable iron or aluminum-bronze hinges with non-ferrous or galvanized pins and bushings. Hinges shall be close or extension type.
b. Bronze or steel cam latch or spring catch located at the jamb of the ventilator.
Vertical Slider
a. Single and double hung ventilators shall be fully counter-balanced at any desired position by means of adjustable balance mechanisms.
b. Bronze or steel lift handle located at the sill of the ventilator.
c. Bronze or steel sweep catch located at the ventilator meeting rails.
Horizontal Slider
a. Ventilator supported by stainless steel or bronze rollers that are guided by a track either in the frame head or sill.
b. Bronze or steel lift handle located at the jamb of the ventilator.
c. Bronze or steel sweep catch located at the ventilator meeting rails.

Insect Screens

Insect screen frames shall be formed electro-galvanized or stainless steel having a minimum thickness of 0.032", or of formed or extruded aluminum having a minimum thickness of 0.040".
Screens shall be rewireable with 18 x 16 mesh wire cloth of aluminum or fiberglass. The nominal diameter of the cloth shall not be less than 0.011" for aluminum.

Screens with hinged or sliding wickets shall be provided.
The wire cloth shall be held taut with removable spline.
Screens shall be removable from the window, held in place by clips.

G. Finish

All cold rolled sections shall be pretreated and coated using manufacturer's standard finish.

PART 3 – EXECUTION

Inspection
A. Fire rated windows must be securely fastened to the wall opening and be capable of resisting all wind and other stresses for which the window was designed. Window manufacturer is not responsible for fire rating of adjacent walls.
B. Window openings shall conform to details and dimensions shown on the approved shop drawings.
C. Conditions that may adversely affect the window installation must be corrected by the General Contractor prior to installation.