The bearer bar spacing for the stairtreads should not exceed 40mm due to the concentrated loads to which stairtreads are subjected.
Features
Non-slip perforated nosing is supplied as standard on all stairtreads. This nosing provides:
- a non-slip footing
- a sighting edge
A side plate is welded to each side of the stairtread for bolting to supports. These side plates are punched to accommodate 12 mm diameter bolts at centres shown for the various tread widths. Special designs of side plates, non standard punching or non standard sizes can be supplied to customer’s specification. Treads can also be manufactured without side plates for welding direct to stringers, tank sides etc. Prices are subject to quotation
Tolerances
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On Widths :
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+/- 5mm
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On Lengths :
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+0 -3
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Materials and finishes available
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Material
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Finish
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Mild Steel
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Uncoated
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Bitumen dipped
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| Note: The bitumen coated grating supplied as a standard to our grating is not a protective coating as such, and deteriorate if exposed to the elements. | |
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Galvanised
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Other on application
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Stainless Steel
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Uncoated
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Type 304 & 316
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Pickled and
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Passivated
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3CR12
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Uncoated
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Pickled and
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Passivated
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Stock sizes in Rectagrid
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Size (mm)
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Uncoated Mass (kg)
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600 x 205
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4.4
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600 x 245
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5.1
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750 x 205
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5.4
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750 x 245
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6.1
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900 x 245
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8.1
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1000 x 285
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10.2
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Specifications
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Stairtread Length
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Stairtread Width (mm)
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Bearer Bar Size
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(mm)
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85 & 125
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165 to 285
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(mm)
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Side Plate Size
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Up To & Including 750
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80 x 4.5
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60 x 3
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25 x 4.5
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751 – 1000
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80 x 4.5
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60 x 3
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30 x 4.5
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1001 – 1200
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80 x 4.5
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80 x 4.5
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40 x 4.5
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60×3 Stairtread Side Plates
80×4.5 Stairtread Side Plates
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Dimension A mm
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Dimension B mm
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165
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110
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205
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110
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245
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110/155
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285
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180
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Dimension A mm
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Dimension B mm
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125
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65
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165
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105
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205
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110
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245
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110
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285
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167
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