Cable fail-safe redundancy: Based on the proper setting of the drums on the torsion shaft, the two lift cables divide the lifting force equally to keep the door level as it rises. This not only levels the door, but also provides a fail-safe mechanism. If one of the cables should fail, such as from breaking or losing its end attachment, the other cable will then carry the full weight of the door. This will pull the door up on one side with twice the normal force, while the other side falls from its now unsupported weight, tending to make the door bind in its tracks and jam. Although not foolproof, this is a safety feature of the design which keeps the door from falling catastrophically if a cable were to fail while the door was traveling. The jammed condition also prevents a lowered door from opening with the hazard of a single broken cable, further minimizing the chances of both cables failing. Since if one cable fails the other must sustain the full weight of the door, the cables and attachments are rated many times the normal working load of half the door weight. A proper safety inspection of the door should include a critical look at the cables and their attachments.
We strive to deliver the most relevant products, services, and guidance to provide you with customized and flexible solutions to meet your specific requirements and budget. Choosing us means that you will not be disappointed. We provide round-the-clock reliable garage door repair, garage door service and support in Orange County, CA. Champion Garage Door Repair is, therefore, your household name when it comes to garage doors and garage door repair service.
Before purchasing a roll-up door, measure the space between the top of the garage door opening and the ceiling or overhead framing. Standard tracks require headroom of about 14 inches. If you don’t have that, you can get low-headroom track, which costs about $100 more. There are also tracks specially made for garages with unusually high walls or cathedral ceilings.
Insist on having any old parts returned to you, and have that noted on the written order before work begins. An honest and competent technician will not object to this. The evidence will establish whether you really needed the parts or not, and you can consult another opinion if you have any doubts. This tends to deter the parts-upsell scam, and protects you even if you know nothing about what you're buying while under the pressure of making a costly decision. If the old parts mysteriously "disappear", then you have reason to be suspicious.
When a garage door goes off the track, the spring breaks, the door is dented or the garage door opener is on the fritz, a professional garage door repair specialist can help. The cost to have a garage door fixed varies, but the national average cost of garage door repair is $70-$110. The extent of the damage and the size and material of the door will affect the final cost. A garage door repair company generally charges a national average of $80 for a service call, which includes the first hour of labor and service, such as testing and inspecting the garage door and opener. Apart from labor, the garage door repair costs hinge on buying replacements parts. For example, a new spring costs an average of $60. Expect to pay several hundred dollars, though, if the door is beyond repair; a new garage door ranges in price from $200 to $4,000, and most homeowners spend an average of $800-$1,200.
Two of the spring references specifically for the garage-door industry are the APCO Spring Manual by Bill Eichenberger, and the Torsion Spring Rate Book by Clarence Veigel; these give tables of spring sizes and torque constants. Spring engineering principles in general are described in the Handbook of Spring Design published by the Spring Manufacturer's Institute; the formulas allow you to calculate torque constants knowing only the geometry and the Young's modulus of the material. You can also find some brief spring information in standard references like Machinery's Handbook and Marks' Standard Handbook for Mechanical Engineers.
No matter your service need, our garage door specialists in Houston are ready to help. We provide routine maintenance of your garage doors and gates, repairing broken components, and installing new doors and gates. You can always depend on Garage Service Pros to deliver speedy yet effective service. With same day service and availability 24-hours for emergencies 7 days a week, you will always have someone on the other end of the line when you need us most. We take great pride and provide excellent customer service in the following locations.
“Especially on houses where the garage is front and center, the garage door absolutely has to look good,” says Casey McGrath, a real estate practitioner in Kitsap County, Wash. And it has to operate smoothly: Americans use the garage more than any other entry to the house, including the front door, according to a survey commissioned by window and door manufacturer JELD-WEN.
A standard double garage door is 7 ft. high by 16 ft. wide. Standard single doors are 7 ft. high by 8 or 9 ft. wide. Because the doors are so large, few home centers and only some garage door stores keep many doors in stock, so expect to order one instead of buying it off the shelf. Garage doors are available in wood, fiberglass and steel. Steel doors, like ours, are light, maintenance-free, affordable, readily available, and have an insulating value as high as R-19.
If you’re looking for a stylish garage door that is a statement of your good taste, we have customized solutions that fit your family’s lifestyle. Or if it’s the safety and security of an integrated, commercial door and operator system that your workplace needs, Overhead Door™ products make operating your facility safer and easier. Our products are manufactured to give you durable, long-lasting performance for years of extended use and trouble-free operation. Each product, from residential to industrial to commercial applications, is backed by knowledgeable and professional customer support for troubleshooting and answers to your questions.
Overhead Door® openers and garage doors are built with longevity in-mind. By performing a few routine tasks, you can help ensure your garage door system stays safe and stands the test of time. One important part of garage door system routine maintenance is to make sure the photo-eyes have not gone out of alignment. The photo-eyes are the infrared sensors which monitor whether the space at the bottom of your garage door is clear. When these sensors are not lined up properly they will keep your door from closing. Make sure to occasionally check your photo-eyes’ alignment to ensure they are correctly detecting obstructions to keep your garage door safe and operating properly.
You depend on your garage doors to provide safety and security at your home or office. They are also great for enhancing your property’s curb appeal and increasing its value. With their many moving parts and how they operate, you must have access to a reliable service company when something goes wrong. Houston residents and businesses trust us to make sure their garage doors will work when they need it to.
Yet another professional wrote me to say that the red paint on certain components of these assemblies is an "industry standard" that signals, "Danger! Part under hazardous tension." Other items under tension like the bolts on the cable attachment plate on the door should therefore also be painted red. If so, then this is a new, ambiguous, unreliable, and little-publicized standard, because none of my old hardware shows it, red paint also means other things, and searching the Web does not readily turn up references to this practice.
The special-price don't-tell-my-boss trick: In this scheme, after the technician has worked on your door for a bit, he will grimly notify you that he has discovered an additional repair needed, not just the spring(s). He will offer to do the work at a "special price" if you agree not to tell his boss. This air of conspiracy to get a bargain distracts and disarms you from critically thinking whether you really needed the repair in the first place (likely you don't), and whether the price is really a bargain (likely it isn't).
Thus it is humanly impossible to dodge a falling door. If the spring happens to break when the door is moving up or down somewhere in the middle of travel, as is more likely, then you'll have even less time. Hence it is not prudent to stand or walk beneath a moving garage door. Of course people often do, and the only reason this does not frequently kill people is that springs typically break at the bottom of travel, where they are stressed the most.
Uncentered center bearing plate: The center bearing plate need not actually be in the center. It doesn't much matter where it is, since the purpose of the bracket is to anchor the spring ends. This anchoring must be secure, since all the torsion is held together at that point. On a stud-framed wall, this bracket may be placed over the stud closest to the center rather than exactly at the center of the door opening.
Stress and lifetime: Calculating the maximal stress in the wire is useful for estimating the lifetime. Using the formula above, the bending stress S in the spring wire is 32*238/(π*0.2253^3) = 212 Kpsi. The spring index C is D/d = 2.23 / 0.225 = 9.88. The Wahl correction factor is Kw = (4C-1)/(4C-4) + 0.615/C = 1.15. The Wahl-corrected stress is Kw * S = 1.15 * 212 Kpsi = 244 Kpsi. This predicts about a 10,000-cycle lifetime, which is the standard "cheap spring" configuration originally installed. Note that while this stress is proportional to the torque being applied, it is also in proportion to the inverse third-power of the wire size. Thus slightly heavier wire sizes (and suitably adjusted D and/or L) radically improve the expected cycle lifetime of the spring.
Spring rate and torque: In my spring replacement above, the wire size was d = 0.2253 inches, and the ID was 2 inches, giving a mean diameter D = 2.2253 inches. The number of coils is L/d = 24 inches / 0.2253 = 107, less about 5 dead coils on the winding cones, or 102 active coils. Thus the spring rate is K = (π*28.5*10^6 * (0.2253)^4) / (32 * 102 * 2.2253) = 31.8 in-lb/turn (IPPT). Winding 7.5 turns * 31.8 in-lb/turn yields a torque of 238 in-lbs per spring.