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Commercial Doors Architectural Specifications

Model: CU-175 (26GA Exterior)

Click here to download specifications in pdf format

I. GENERAL

A. Work Included
The doors will be Model CU-175 as manufactured by Midland Garage Door Mfg. Co.

B. Other Work
Related structure work, opening preparation, field painting and electrical work etc. falls into the responsibility of other trades.

II. PRODUCT

A. Sections
Sections will be roll-formed, hot dipped, galvanized G60 (minimum), a minimum yield strength of 33,000 psi, complying with ASTM A653 and ASTM A924, 26 ga. exterior and 28 ga. interior steel stucco embossed and micro-grooved surfaces. Sections will incorporate a PVC thermal break to prevent heat or cold conductivity.

B. Insulation
Insulation will be form-in-place 1 3/4” urethane free of CFCs and HCFCs and will be laminated to provide strength and prevent loss of thermal efficiency over time. The insulation will have a calculated R-Value of 16.3, U-Value of .067, complying with ASTM E 84 flame-spread and smoke-developed.

C. Air Infiltration
All doors will be constructed with a PVC strip and cap between sections to resist air infiltration and provide a tight fit, complying with ASTM E 283,
maximum rate: .08cfm@15mph and 0.08cfm@25mph.

D. Windload
Doors will be designed to meet or exceed industry standards for windloads (ANSI/ DASMA 102-1996), uniform pressure (velocity pressure) of 20 lbf/sq. ft. acting inward and outward. Deflection of door in the horizontal position will not exceed 1/120 of the door width. Consult factory for unusual requirements.

E. End Stiles
End Stiles will be 16 gauge (13 gauge optional) steel and incorporate a thermal break to help prevent heat/cold conductivity between the inside and outside steel skins.

F. Hardware
Hinges and fixtures will be G60 galvanized steel complying with ASTM A 36 and ASTM A 123. Full floating ballbearing rollers will have hardened steel races. Roller sizes will be adequate for design requirements and limitations.

G. Track
Track is 2" or 3" depending upon door size and requirements. Bracket or angle mounted depending upon door size and requirements.

H. Spring Counterbalance
Counterbalance shall be oil tempered, helical wound torsion springs complying with ASTM A 229, mounted on a ball bearing cross header shaft engineered to comply with ANSI/DASMA 102-1996. Long Life springs of 25,000, 50,000 or 100,000 cycles may be specified. Galvanized aircraft type lifting cables with minimum safety factor of 8 to 1 and cast aluminum drums are standard.

I. Lock
Lock will be interior mounted slide lock. (Optional commercial keyed lock is available.)

J. Weatherstrip
PVC strip sections meeting section caps attached inside every joint. Bottom weatherstrip will be U’d shape astragal fastened to the bottom of the door with an extruded aluminum holder for an effective seal at the sill.

K. Finish
Finish will be baked-on polyester over epoxy primer. White interior and white exterior.

L. Operation
Operation will be by manual pull rope. Optional chain hoist and electric operator are available.

III. EXECUTION

Installation
Doors should be installed in compliance with Midland Garage Door Mfg. Co. instructions by authorized Midland Garage Door Installation Professionals.

Options

• Thermal Glazing
• High Cycle Springs
• Jamb Weatherstrip
• Electric Operator
• Chain Hoist
• Bottom Sensing Edge
• Rubber Header Seal

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