Tuesday, November 26, 2013

Museum Display and Queue Barriers

Museum Barriers

Museum Display and Queue Barriers
Museum barriers are typically used to queue and control visitors throughout a museum or institution. Taller barriers are usually used for directing foot traffic in a particular path or direction. Shorter barriers can be used for surrounding items such as works of art to keep visitors from touching or getting too close. There are a number of barrier options that can be used, such as belts or ropes, but most museums prefer the more refined sophisticated approach of a straight cord. This gives a nice clean look that does not distract from the object being viewed. The largest supplier of this type of barrier is Absolute Museum and Gallery Products. In North and South America, Absolute’s quality products are sold by Art Display Essentials.
Museum barriers should also adhere to ADA (Americans with Disabilities Act) standards. The belt or cord on a typical barrier is too high. According to the ADA, the cord or belt must be cane detectable and located within 27 inches off of the finished floor or ground. Absolute Museum and Gallery Products now offers a cuff to add to an existing barrier that adds a second cord down at the correct height to be compliant with the ADA standards. These items and other barrier related items are sold by  Art Display Essentials and can be purchased on their website here:
Art Display Essentials also carriers the new Q-Cord Retractable Barrier made by 10-31 Inc., which is one meter(39.375”) high and has two retractable cords. The lower cord is half a meter(19.75”) off of the ground to be ADA compliant.
The Q-cord retractable stanchion system is the new definition of convenient architectural crowd control and can be seen and purchased here:
Q Cord
Below is the info from the ADA website:
From 2010 ADA Standards for Accessible Design2
307 Protruding Objects
307.1 General. Protruding objects shall comply with 307.
307.2 Protrusion Limits. Objects with leading edges more than 27 inches (685 mm) and not more than 80 inches (2030 mm) above the finish floor or ground shall protrude 4 inches (100 mm) maximum horizontally into the circulation path.
EXCEPTION: Handrails shall be permitted to protrude 4 1/2 inches (115 mm) maximum.
Advisory 307.2 Protrusion Limits. When a cane is used and the element is in the detectable range, it gives a person sufficient time to detect the element with the cane before there is body contact. Elements located on circulation paths, including operable elements, must comply with requirements for protruding objects. For example, awnings and their supporting structures cannot reduce the minimum required vertical clearance. Similarly, casement windows, when open, cannot encroach more than 4 inches (100 mm) into circulation paths above 27 inches (685 mm).
307.3 Post-Mounted Objects. Free-standing objects mounted on posts or pylons shall overhang circulation paths 12 inches (305 mm) maximum when located 27 inches (685 mm) minimum and 80 inches (2030 mm) maximum above the finish floor or ground. Where a sign or other obstruction is mounted between posts or pylons and the clear distance between the posts or pylons is greater than 12 inches (305 mm), the lowest edge of such sign or obstruction shall be 27 inches (685 mm) maximum or 80 inches (2030 mm) minimum above the finish floor or ground.
EXCEPTION: The sloping portions of handrails serving stairs and ramps shall not be required to comply with 307.3.

Figure 307.3 Post-Mounted Protruding Objects
307.4 Vertical Clearance. Vertical clearance shall be 80 inches (2030 mm) high minimum. Guardrails or other barriers shall be provided where the vertical clearance is less than 80 inches (2030 mm) high. The leading edge of such guardrail or barrier shall be located 27 inches (685 mm) maximum above the finish floor or ground.
EXCEPTION: Door closers and door stops shall be permitted to be 78 inches (1980 mm) minimum above the finish floor or ground.

Figure 307.4 Vertical Clearance
307.5 Required Clear Width. Protruding objects shall not reduce the clear width required for accessible routes.

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