Specification of Smoking Shelters
General
- The No Butts Bin Company Smoking Shelters are supplied in a range of sizes and in two basic forms, namely Free Standing and Wall Supported. We are also able to supply in configurations that meet the requirement of 50% open area that is frequently specified. It is a well-proven product with over a 2000 units in the field. Mainly these are located in the UK but increasing numbers are being supplied to the mainland of Europe and North America.
Construction
Frame
The frame of the unit is constructed from specially designed extruded aluminum sections extruded to BS 1474: 1987/6063. The whole is vapor degreased, etch primed and finished in exterior grade polyester powder paint with a color consistency to BS 7413:1991. The spraying is generally in accordance with BS 6496:1984 part 1 to 60 microns. The mullion bars are attached to the uprights via zinc coated steel brackets, using 6 mm hardened and plated steel screws.
Sides
The side panels are manufactured from 6mm clear acrylic plastic. They are retained in the glazing rebate with a wedge gasket.
Roof
The roof is formed as a regular arch. It is made from a glass reinforced polyester resin composite structure. The unit is manufactured using a resin infusion process to give excellent dimensional accuracy. The exterior is finished in black UV enhanced polyester gel coat. The roof segments are supplied in 1 meter sections, each open end is designed to overlap to give a weather tight joint. The roof sections secured to an extruded aluminum frame with special sections to form a longitudinal gutters. The roof assembly is attached to the sides with 10 gauge self-drilling screws.
Fixing
The completed structure is supported by 6mm steel brackets, one per upright. Each bracket allows an adjustment of 50mm. These are to be secured to a suitably prepared base with M8 anchor bolts.
Design
The structure has been designed to meet the requirements of BS 6399 part 2 "Wind Loading" using the "standard method" to 25m/sec (approx. 56 miles per hour).
Installation Considerations
- When evaluating the placement of the shelter, due consideration should be taken to any factors that might cause it to be subject to unduly severe wind conditions.
Proximity to high-rise buildings (causing a venture effect), elevation and closeness to the coast can all exacerbate the wind loading on the shelter.
In extreme cases alternative methods of construction and fixing can be employed if it is felt that severe wind loading is likely.
The acrylic panels are an important component in the shelters integrity and particular attention must be paid to the location of the panel and the application of the wedge gasket.
The shelter is supplied in self-assembly form and must be constructed by competent personnel. Incorrect assembly could result in the failure of the unit.