Mild Steel Handrails - AAI Tubular Ball Type Rail Type AA700
Mild Steel Handrails and Guardrails
Mild Steel Handrails type AA700. This mild steel handrailing system is widely used in civil and industrial environments. All parts are totally pre-fabricated before delivery in accordance with bespoke drawings prepared for every individual contract.
Each piece of mild steel handrailing is marked to facilitate identification, this in conjunction with the drawings provided, ensure quick trouble free assembly. Generally handrails should be not less than two rails in the same plane, however on companion way ladders and on stairs bounded by a wall a single handrail should be fitted. Handrails should be continuous and to avoid injury or damage, rails should terminate in a returned end.
When designing fixings, connections, supporting brackets and other supports, the design loads for the components should be multiplied by an additional nominal factor of 1.5 (BS6180). We recommend that the spacing of standards with fixings to concrete should not exceed 1.5 metres to limit stress on fixings.
Handrail standard sizing will vary according to the shank type required for the determined loading / specification. This will affect in turn the ball diameter needed.
Base plates will normally be welded on to the shanks and drilled to received M12/M16 bolts as required. Larger / thicker bases may be required to those shown for heavier duty loading.
Handrail standards will usually be supplied Galvanised to BS EN ISO1461, but can be supplier either self colour or primer painted, (for site finishes). Loadings should be a defined in BS6180, BS EN ISO14122 & BS EN 6399 Part 1:1991
HANDRAIL STANDARD / SPACING GUIDE
Tubular and solid standards.
Spacings of handrail posts will be determined by the design loading required. Handrails are normally 1100mm high with handrail standards typically pitched at 1500mm, (sizes of standards and rail will vary according to the loading). Where handrails are required above 1100mm spacings may reduce accordingly.
Handrail standards can be supplied with flat or side palm bases for connection to either steelwork or concrete.
Direct contact with some metals such as Copper or Aluminium, should be avoided. Use of suitable isolation materials will alleviate any problems.