Glass barrier enclosures for turnstiles and related applications are designed in accordance with the relevant parts of building regulations approved document K and BS 6180. And the glass panel must withstand static and impact loads as given in BS 6399-1. The design of the glass barriers for turnstiles depends on the location and application, after proper risk assessment in most of the cases. Risk assessment will vary in content and depth of coverage, as there is no clear industry guidance. The main components of the glass barrier enclosures are glass filler panel & upright columns also referred as side posts.
Upright column or post for glass barrier
Glass barriers are not universal design but are based on suitability and mode of application however should comply with the design regulations. The application of the glass barrier enclosure depends on the use of upright columns. The upright columns are available as single side clip, double side clip, three side clips and four side clips. The combination of posts is used for application be it whatever way. The glass panel is fixed on the sides with the posts, usually two clips are available for fixing on each side. The posts are made using single or double brushed SUS304 grade stainless steel for general applications while SUS316 grade steel is available for specific applications like for marine, locations subject to high chemical flames, fumes etc.
Holders for glass barriers
Glass barriers can either be fixed using holders to posts on left and right, in general two holders are used on each side or the glass buried can be fixed using the stainless steel holders fixed on the ground surface. The length of the glass is to decide the number of holders to be used on the surface from two to maximum, maintaining a proper distance between holders to keep a desired balance. We can fix the glass on the ground railing as well taking care of all requirements etc.
Panels for glass barriers
The tempered or toughened glass is one of the most standard forms of safety glass available and is an essential part of glass barriers. The glass thickness may be 8mm, 10mm or 12mm as a project requirement. The widely used security glazing is tempered glass that is five times tougher than the annealed glass,to specifically resist vandalism to gain entry or to inflict damage to the properties and injury to the building occupants. The laminated glasses are sometimes used which consists of two lites of glass with a plastic layer in between fixed together. But the laminated glasses are not as effective as tempered glass.
Standards & regulations requirements
The steel upright columns or posts are made of steel and are IP (Ingress Protection) rated like IP56/ IP65/ IP67/ IP68 etc. The whole units as glass barriers are generally used for indoor application in combination with the turnstile systems. The standards followed are CPSC 16 CFR 1201, ANSI 97.1-2015, GOST15150-69 etc.