International Door & Operator Industry

NOV-DEC 2017

Garage door industry magazine for garage door dealers, garage door manufacturers, garage door distributors, garage door installers, loading docks, garage door operators and openers, gates, and tools for the door industry.

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Page 39 of 126

Most residential garage doors sold are 7 feet high and come in various widths. Common widths are 8, 9, 14, and 16 feet, but less known is garage door manufacturers can make a door in almost any custom width if needed; consult the factory for lead time and extra charges. The first two widths would be considered as being a single car garage door whereas the last one would be considered a double. Other double car garage doors may be be 12 or 18 feet wide. You will find that sometimes a builder goofs and builds a door frame only 12 feet wide, which would then require you to install an undesired 12 foot door which would be a tight squeeze for two cars. Even if you could park 2 cars under a 12 or 14 foot wide door, the users would no doubt generate hundreds of dings in their car sides every year…a 12 foot wide door is for those with 2 motor bikes. As for tracks, the vertical and the horizontal tracks are produced in 3 profiles, being 2 or 3 inch or 1 inch found only in trailers with rear end overhead doors. Track kits come in 2 segments; one being the vertical track which is to guide the door down into the opening and seal off the opening from outside elements. The horizontal track must be strong enough to hold the full weight of the door when it is open and typically has the curve in it that projects the door up and back. The curve is known as the track radius and can be ordered in 10, 12, 15, or 32 inch radius; the most common being 12". By Roy Bardowell A garage door is truly a complex engineering marvel. The science, physics and dynamics of the garage door system is often misunderstood, so to get a good bead on what's going on you have to study the system from A to Z. For certain, manufacturers have the edge on understanding most of the dynamics because they have been deeply involved in the study, design, and evaluation of the products for decades. A Complex Engineering Marvel A Complex Engineering Marvel Continued on page 38 V O L U M E 5 0 I S S U E 6 D E C E M B E R 2 0 1 7 37 TECHNICAL

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