Three Types of Exit Devices
Most people visiting or working in commercial and public buildings give little thought to the structure or security of the building. In fact, many people aren't even familiar with the term "exit device." This is in spite of the fact that every commercial and public building in North America is outfitted with at least one, and likely numerous, exit devices (also known as crash bars or panic bars.) However, every person who enters a public building has a reasonable expectation of security and safety while inside. Fortunately, exit devices play a significant role in the safety and security of human lives as well as property.
An exit device is a type of door hardware which allows doors to remain locked from the outside. People inside the building, however, can still exit quickly without having to unlock the door. The mechanism actually makes a hands-free exit possible. In fact, the nickname "crash bar" is derived from the ability to open the door by simply applying full-body force to it ("crashing" into it.)
Exit devices are advantageous for a few reasons. First and foremost they are security and safety features. A property owner who wishes to restrict the public's ability to enter a building to just a few select doors can apply crash bars to all non-public entrances. These doors cannot be opened from the outside when locked. In the event of an emergency, such as a fire, those inside the building can use these doors as emergency exits by activating the crash bar on the inside of the door. The term "panic bar" came to be applied to exit devices because they can be opened quickly in an emergency. Panic bars are also advantageous because people with limited mobility (i.e. those in wheelchairs) and even small children can activate them.
The first crash bar was invented in the early 1900's and marketed under the brand name Von Duprin. The company continues to be the leading manufacturer of exit devices today, though other companies have since copied Von Duprin's original design. Von Duprin has also improved on its original design since its first prototype. New technology has allowed for lighter and stronger materials to be used. All of this has resulted in a wide range of quality exit devices on the market.
Three basic types of exit devices are available:
1) Rim style: This type is mounted on the inside surface of the door.
2) Mortise style: Like standard a mortise lock, this type of crash bar has its locking mechanism mounted (mortised) into a cavity in the door.
3) Surface/Concealed style: This type is constructed with vertical rods. Concealed exit devices provide additional latching at the tops and/or bottoms of doors. This type of exit device is used when aesthetics play a strong factor in door design.
Crash bars are available in various designs. The standard that most people are familiar with is the touchbar design. These are often found on utility, service and emergency exit doors. The crossbar style is also popular. The first Von Duprin exit device was a crossbar type. Other styles include lever and plate-type.
Today all industrialized countries have some type of building code standard(s) which dictates how exit devices should be applied to commercial/public buildings. Undoubtedly many lives have been saved thanks to panic bars since their invention over one hundred years ago. This unobtrusive and seemingly insignificant device changed the face of building safety and public security in a very significant way.
Related Tags: panic bars, exit devices, crash bars
Jenny Schweyer is a freelance writer from the Pacific Northwest.
Popular Hardware: LARGEST SELECTION OF BRAND NAME EXIT DEVICES AND COMMERCIAL DOOR HARDWARE ON THE WEB.
Steiner Doors: MANUFACTURER OF CUSTOM ARCHITECTURAL AND ALUMINUM COMMERCIAL DOORS.
Recent articles in this category:
- 10 Things Your it Support Provider Should Do for You as Part of a Fully Managed Service Contract
Using an outsourced IT support provider is a smart move for small and medium sized businesses. It en - The Importance of Choosing a Good Cash Gifting Professional
Today, cash gifting programs can be found all over the Internet. You may have already heard of the - How International Trading Works in Modern Times
Import and export are terms commonly used when referring to international trade. Trade leads are sm - How to Write a Non-fiction Book
Do you want to write a fantastically successful non-fiction book? Do you feel you know how to write - How to Make Money Online for Beginners
How to Make Money Online For Beginners Many people wanted to know if there were ways to make money - Why Creating Books is Important as a Speaker
As a speaker, you need credibility. The best way to gain credibility is by creating a book or books - This is the Season to be Jolly!
"Christmas is finally in the air! In Ontario, snow is in thus leaving an air conditioning system to - International Trading for Small and Medium Sized Businesses
The import export business has been around since the man has started doing business with others. As - 11 Hindrances to Success in a Cash Gifting Opportunity
A cash gifting activity is initially and intentionally to help others in necessitate. On the other - Worried About Funeral and Death Support of Your Loved One? Visit Bridgebeyond
Death is no doubt one such word that is enough to bring tears in eyes of everyone. However it is a
Most viewed articles in this category:
- Why you Should Build your Opt-in List?
Copyright © Jagraj Gill http://www.payitforward4profits.com/jaggiegill You've probably heard - Property Marking for Crime Prevention & Detection
In simple terms, if you want your stolen property returned to, mark it. There are a variety of - Solve Wood Dust Problems With Industrial Dust Collectors
Wood dust or sawdust is a potential problem in virtually all woodworking applications. In any type - Blog your Way to the Bank
Haven't you heard about the Blog Marketing Explosion ? Blogs are weblogs, updated weekly or daily. I - Spanish Healthcare
Whenever we think of healthcare in a foreign land, we immediately think, "will it be expensive and o - 3 Steps to Troubleshooting Image Problems on your Laser Printer
3 Steps To Troubleshooting Image Problems On Your Laser Printer It usually happens at the most - Ten Top Tips to Buying a Property Abroad
We have always known that investing in bricks and mortar is normally the most lucrative and wisest i - Print Spooler Software Automatically Controls Which Documents are Allowed to Print in Color
Printing in color for approved documents only results in significant TCO reduction If output co - Bar Owners Dilemma: Smoking or Non-smoking
One of the most heavily debated topics in American society today is smoking in public places. Many - The Meeting of Two Seas in the Three Religions
Modern Science has discovered that in the places where two different seas meet up, there is a barrie