Principles, Standards and Implementation

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Safety Distance Calculation

Safety Distance Calculation Formula Directions of Approach Speed Constant Stopping Time Depth Penetration Factor
Reach Through Applications Single or Multiple Beams Distance Calculations Angled Approaches Safety Mats Examples
Single or Multiple Beams

Single- or multiple-separate beams are further defined by the ISO EN standards. Table 7 shows the practical heights of multiple beams. The US CAN approach takes this into account by the reach-through requirements. Getting over, under, or around the single and multiple beams must always be considered.

No. of Beams Height Above the Floor—
mm (in)
C—mm (in)
1 750 (29.5) 1200 (47.2)
2 400 (15.7), 900 (35.4) 850 (33.4)
3 300 (11.8), 700 (27.5), 1100 (43.3) 850 (33.4)
4 300 (11.8), 600 (23.6), 900 (35.4), 1200 (47.2) 850 (33.4)
 
Table 7: Single and Multiple Beam Heights and Depth Penetration Factor