Steel is a uniform material
All steel is a consistent grade and strength
Welds are stronger than screws and permanent
Welds never work loose
Schweiss uses 4" wide steel members
And allow more room for better R-Value insulation
May add unnecessary weight
Wood may shrink over time
Limited strenght compared to an all-steel frame
Compresses the insualtion more / Lower R-Value
Wood can split when using tec screws for
Doors flex while moving up and down. . .
a welded connection is stronger than using screws.
A 10-foot-long utility grade 2x4 is only capable of resisting a 23 mph wind. A 10-foot-long 2 x 3 -14 gauge steel member is capable of resisting a 120 mph wind. Ask yourself how often the wind is greater than 23 mph? What do you think that would do to your utility grade 2x4.
All wood is not created equal. Quality wood is clearly identified. It is grade stamped “SELECT.” It doesn’t have large knots and splits. Even if the wood was “SELECT,” it would only resist a wind of 12.3 PSF. Does this seem strong enough for your door? Steel is a uniform material. Steel is all a consistent grade and strength. When you get an all-steel door you know that the material quality is consistent.
Two tec screws in the end of a 2x4 are good for about 40 PSF of wind if the screws don’t split the wood. If the wood splits, the screw is good for nothing. Installation of the screws is critical and is all up to the erector. A 2x3-14 gauge steel member welded all around is good for about 120 PSF of wind. The steel is shop-welded, meaning no field labor is required. There are no tedious screws to install. Every member of an all-steel door is positively welded in place.
Doors are flexible. The door will flex when wind blows on it and when it opens; the wind blows every day! Sometimes the wind is strong, other times there is almost no wind. You purchased a door so that you could open it. As the door flexes due to the variable wind load and its own weight, when you open it, the screws stretch in the wood, eventually working their way loose, or worse, tearing out of the end of the 2x4. Welds never work loose. Welds are strong and permanent. They never need to be reinstalled or tightened.
with welded connections
- Door's subframe 4x6 header tube adds building/door support
- 4" x 5" side column adds extra support
- Horizontal members 4" deep - all welded connections
- Vertical members 4" deep
If a hydraulic hose should ever break . . . Schweiss Doors includes velocity fuses that lock up the cylinders that STOPS the door
Door locks up....Safety built in
Schweiss uses a velocity fuse -- Stops the Door
Door will come done in 30 seconds...Not too safe
Door will wipe out anything in it's path of travel!
Have been used by some manufacturers as a safety feature. They may be setting you up for slow motion disaster, Your worst nightmare!
There’s nothing safe about a door slowly, gently coming down on top of a plane or vehice at a “controlled rate of speed.”
“No one else in the industry offers this unique feature” only available on Schweiss Doors. . .
Allows for Flexing
Allows for Flexing
Spherical bearings reduce stress and wear on the cylinders, cylinders pins and clevises during operation
This is what happens when Spherical Bearings aren’t used . . . More stress is exerted:
- On the cylinders
- On cylinders pins
- On clevises
Cyinder connection points don’t flex