Computer club discussion

Choosing a manual or an electronic door opener for your commercial property doors is usually a matter of preference.  Both perform well and do the job that they are required to do.  Commercial property owners who decide to install electronic door closers are faced with another question: single-point or multi-point models?

This question applies in particular to fire doors.  Fire doors protect commercial properties in the event of a fire emergency.  They are made of materials which are highly resistant to flames and heat.  During a fire, the door will prevent the spread of fire from one part of a commercial building to another.  By containing a fire to the smallest possible area of a building, more property and possibly even lives are spared.

Door closers are an essential part of commercial doors.  They are, in fact, a requirement in almost every industrialized country in the world.  However, commercial property owners have a great deal of discretion when it comes to the type(s) of door closers they choose.

Property owners must maintain the integrity of fire doors.  But in choosing electronic door closers with single or multi-point holding features, owners have the option to leave fire doors open (depending on the type of facility/business) while still having the assurance that doors will close automatically in the event of a fire, thus maintaining the building’s fire integrity.

The prevention of the spread of fire from building compartment to compartment can only be maintained if fire doors are closed when a fire breaks out.  Local laws and building codes vary in regard to the status of fire doors.  Some regions specify that fire doors must remain closed at all times.  Others state that fire doors must be closed in the event of a fire.  Still others may actually require fire doors that automatically close when a building’s fire detection system is activated.

To bring this into perspective, take a typical office building as an example.  An individual lessee whose door has been equipped with an automatic door closing device can leave its entrance door propped open, even if the door is a fire door.  Should a fire or an interruption to power occur, the door closer will be automatically activated.

Electronic door closers may come in single or multi-point holding models.  A single-point holding electronic door closer, has the capability to hold a fire door open in a single position.  Typically, single-point door closers hold a door in a fully-opened position.  Multi-point holding models can hold a door open in multiple positions according to preference (i.e. fully, half or partially opened.)

In the event that power is interrupted (i.e. power failure) the door will close manually like a rack-and-pinion closing device.  Electronic hold-open door closers may also be outfitted with smoke/fire detectors.  These devices will automatically close the door when particles of combustion are detected.

Either way, commercial property owners can count on electronic door closers with hold-open function to protect their properties, employees and customers in a fire emergency.  Plus, they offer the convenience of choice in allowing fire doors to stay open as desired without compromising safety integrity.

Using electronic muscle stimulators for body building provides nerve and flexor training for the muscles and seems to allow the muscle tissue to grow at a rate comparable to simple exercise. However, with the stimulators the body goes without the after-pain associated with strenuous weight training exercises. In this way the electronic muscle stimulators can help the body building enthusiast to better control the level of pain that is felt after a workout. Some people with problem areas such as sore shoulder muscles can use the stimulators to help alleviate the pain before the next session of exercising.
The same applies to anyone looking to lose weight with electronic muscle stimulator use. While the stimulator may help to alleviate the pain sometimes associated with weight loss exercising, the unit itself will most likely have very little to do with actual weight loss. However, by helping the person control any pain associated with the exercising, the stimulator may, in fact, help these people to exercise more. They will then have a better chance at losing more weight.
Electronic muscle stimulators have been thoroughly proven to help with physical therapy where nerve and muscle damage has occurred. Many therapists highly recommend the use of these units when their patients routinely complain of sore muscles during and after exercise workouts, or have some form of nerve damage that prevents them from getting the most out of life.
The effective use of these electronic muscle stimulators depends a lot on the type of patient and the nerve or muscle damage they may be suffering from. In general use, the stimulator units can be used easily by the patients themselves after only a few minutes of training. In this way, the patients control the amount of voltage used and the rhythm cycle that controls the rate of muscle contractions. Many health spas and gyms have electronic muscle stimulators on hand to help alleviate any sudden pain or muscle spasms that their customers may have while exercising. It’s fairly easy to become adept at using these units and many people swear by the relief that these units give them from their muscle and nerve pain.
Many manufacturers of these electronic muscle stimulators are quick to point out the safety and value of their products when it comes to weight loss or muscle building. How would a company stay in business if it didn’t promote its own products? Many federal departments have done exhaustive tests on these electronic muscle stimulators and have found that very few of them do anything at all in the way of weight loss. The results from using one of these units for weight loss is comparable to not using one at all, proving that the units are ineffective at best. In fact, they may end up being harmful if overused to stimulate out-of-shape muscle and fat tissue. Because the stimulators contract the muscles, many people believe that this motion causes the body to lose weight, but it is simply not true.