Archive | June 30, 2017

Finish Hardware Makes The Door

Doors in commercial facilities require a minimum of finish hardware, including hinges, flush bolts and pivots. Doors can also be outfitted with a variety of decorative hardware, including kick plates and door pulls. Which hardware is installed is determined by door use, architectural style and safety concerns.

A hinge may just seem like a hinge, but each hinge is designed for use in a particular situation. For example, a basic five-knuckle plain bearing full mortise hinge is designed for use on a standard weight door that gets little use. It also cannot be used with a door closer. On the other hand, a three-knuckle spring hinge can be used with a door closer. When choosing hinges, tell your supplier the weight of the door, the expected traffic level and the details of any other devices that will be installed on the door. This way you can get the correct hinge for the job and not find the door literally coming unhinged in the future.

Doors can also be fitted with pivot sets. These are typically floor-mounted, although some are jam-mounted. Pocket pivots are also available. These allow the door to open flush to the corridor and are commonly found in hospitals or other settings where the door needs to be completely out of the way when open. Just like hinges, pivot sets need to be chosen based on the weight and expected usage of the door. Pivots are available for doors from 200 to 500 pounds. Some pocket pivots are also rated for use on fire doors.

Flush bolts and strikes are designed to work either on metal or wood doors. Options for this hardware include manual flush bolts, automatic flush bolts, constant latching flush bolts, auxiliary fire latches and dust proof strikes. The best flush bolts share some common features: meet ANSI A156.3 Type 25 or Type 27, are non-handed, offer optional dust proof strikes, and have low actuation forces. You’ll need to know how the door frame is prepared when ordering flush bolts.

Put the finishing touches on a door with decorative, yet functional hardware. Kick plates and push plates protect the door from damage. Pulls can be coordinated with the decor of the building. These items are available in a variety of finishes. Floor stops, wall stops and door silencers all improve the function of the door. Even these hardworking items are available in styles to complement the building design or to blend unobtrusively into the background.

Finish hardware should be chosen carefully to ensure a door works properly and safely for many years. Although home supply stores may carry some basic hardware, it’s best to rely on an knowledgeable commercial hardware supplier to get the proper hardware for each installation.

Forensics vs Forensic Science

If you bring up forensics in a conversation, those involved will often start thinking of scenes from the television show CSI (Crime Scene Investigation). It’s synonymous with scouring crime scenes for minute clues to help criminal investigators create leads in various cases.

Because of the misunderstanding that’s developed about criminal investigations and forensics, many don’t realize that there is an acute difference between forensics and forensic science.

Currently, forensic science gets shortened in most discussions to “forensics.” The word “forensic” actually relates to debates, and comes from the Latin word “forensis” or “of or before the forum.” This concept became most prominent in ancient Rome where both the accused and the accuser involved in a judicial case had to advance their arguments in front of a public forum. This led to the usage of the term “forensics” for both public debate and the presentation of legal evidence.

This concept of “evidence” is what has caused it to run parallel and merge with forensic science. As the judicial system evolved, so, too, did the evidence that was required in cases. No longer was it a matter of verbal debate; instead other forms of evidence were necessary. The concept, that being “forensic” or “before the forum” still holds true. The only thing that has changed is the type of evidence that’s being presented.

While some modern dictionaries will actually merge the two and provide similar or identical definitions, they are quite separate by origin and practical application.

The term forensics refers to public debate which includes the presentation of evidence and rhetoric. Forensic Science is something different. It deals specifically with the gathering, identification, research, and scientific interpretation of evidence to determine such things as who was involved in a crime.

In addition to confusing the terms forensics and forensic science, people often mistake forensic science for criminalistics. However, it’s important to keep these terms in context too. Forensic science involves any discipline that can be applied to evidence. Criminalistics is just one of the subdivisions of forensic science.

Some of the disciplines that fall under the umbrella of “forensic science” are:

-Computer Forensics -Forensic Accounting -Forensic Audio Engineering -Forensic Linguistics -Forensic Pathology -Forensic Psychology -Forensic Engineering -Criminalistics

Criminalistics itself is the scientific discipline which brings together various natural sciences such as biology and chemistry to the examination, identification, and comparison of certain types of evidence. Criminalists deal with biological evidence including DNA and bodily fluids, trace evidence such as fibers, hair, and soil, and impression evidence such as fingerprints and tire tracks. They also are involved with ballistics, drug analysis, crime scene photography and reconstruction.

As you can see, the forensic sciences deal specifically with the research and examination of evidence so that such evidence can be admitted to and used within the legal system. Forensics on the other hand should be viewed not as the science behind the evidence, but as the presentation and use of the research once it’s completed.