Technical information Crab range

Ledger Standard Landing guardrail Rampant guardrail Aluminium flight Adjustable baseplate 4 s t a n d a r d s a c c e s s t o w e r, a l u m i n i u m f l i g h t s 8 0 Clamp Toeboard Diagonal brace Stud Basic standard 2.50 m 1.50 m Compliant with standard NF P 12811-1 Load-bearing capacity compliant with standard NF P 93-521 ( access to a work station) Standards 4 standard access tower, aluminium flights NF EN 12811-1 - Class B NFP 93-521 - step ladder Flight slope 30° to 55° 45° à 50° 48° Rise ≥ 175 mm, ≤ 225 mm Not specified 182 mm Tread ≥ 165 mm ≥ 125 mm 180 mm Overlap - 25 ≤ a ≤ 55 mm Not specified - 15 < to < 25 mm Step width min. 500 mm 550 ≤ width < 750 mm 585 mm Going ≥ 175 mm Not specified 180 mm Step size 2 x rise + going ≥ 540 mm, ≤ 660 mm 544 mm Non slip, self draining treads yes yes Headroom Free height ≥ 1.90 m > 2.25 m min. 4.00 Horizontal guardrails Not specified Top rails, middle rail and toeboard compliant with current standard Top rail, middle rail and toeboard Working load 1 kN/m 2 2 kN/m 2 2 kN/m 2 Handrail above floor > 950 mm 1000 mm Maximum gap between guardrails < 470 mm 452 mm Landing toeboard ≥ 150 mm 150 mm 01.11.17 T e c h n i c a l i n f o r m a t i o n