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ADA Requirement Overview

ADA Requirements Overview: Width and Height Requirements: By ADA standards, the clear width of a door opening must be a minimum of 32 inches and a maximum of 48 inches. This clear width measurement is taken between the face of the door and the stop of the frame with the door open to 90 degrees   The clear height of a door opening must be a minimum of 80 inches   Requirements Regarding Door Surface: If there are any projections on the face of the door, they must be no lower than 34 inches above the floor or ground and must not extend more than 4 inches from the surface of the door Door surfaces within 10 inches of the floor or ground must be a smooth surface on the push side extending the full width of the door. Any parts creating a horizontal or vertical joint on the surface shall be within 1⁄16 inch in depth. If cavities are created by added kick plates they must be capped. Handles, pulls, locks and latches Handles, pulls, latches, locks and other operating devices on accessible doors must have a shape that is easy to grasp with one hand and does not require tight grasping, tight pinching, or twisting of the wrist to operate. Lever-operated mechanisms, push-type mechanisms, and U-shaped handles are acceptable designs. When sliding doors are fully open, the operating hardware must still be exposed and usable from both sides. Hardware must be mounted no higher than 48 inches above finished floor. Thresholds Thresholds, if provided at a doorway, must not exceed 3⁄4 inch in height for exterior sliding...

Rolling Steel (Coiling) Doors vs. Section Doors 

Although they are sometimes considered to be interchangeable, there are dramatic differences between Rolling Steel Doors and Sectional Doors. Some of these differences are based on material, with Rolling Steel doors generally having heavier duty, sustainable construction. Also, Rolling Steel Doors have mounting advantages that make them uniquely suitable for specific applications. Cornell strongly recommends that Rolling Steel Doors be considered over Section for the following reasons: • Heavy duty commercial/industrial grade Rolling Steel Doors are built to last the lifetime of the building with very little cost of maintenance, where sectional garage doors typically have a life expectancy of only a few years with significant maintenance cost. • Sectional garage doors have 30 to 40 moving parts that are all exposed and subject to dirt, debris and damage. Any of these parts, if faulty or damaged, will cause the door to become completely inoperable and/or pose a serious life safety risk. • Sectional garage doors are raised by lifting cables. These thin wire ropes often fray and eventually break resulting in the real possibility of the door free failing. • Sectional door hinges are typically made of inexpensive metal stampings that are prone to wear and premature failure. • Sectional door rollers bind up and seize. • Sectional door torsion springs are exposed to the environment resulting in corrosion, and/or exposure to extreme temperatures. Any of these can cause a reduction in spring life. In comparison, rolling steel doors have a heavy duty steel curtain that coils upon the counterbalance shaft. Their heavy duty springs are protected and sealed inside the counterbalance shaft and heavily coated with grease...
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