IMPACT AREA Flashcards
What is the max height you can fall from
3m measured from foot or seat
What is the max height measurement if it is from a hanging position
3m from hand
If climbing where is the max height measured from
If climbing this is measured 4m from hand and 3m from foot
What is min the gap around a fire pole?
350mm
What is free space
the space occupied by the user undergoing forced movement
FS for standing user
1.8 x 1m radius
FS for hanging user
1.8 x 500 radius (plus 300 above hands)
FS for sitting user
1.5 x 1m radius.
If under 600 high does it need impact surface
No - unless it is forced movement.
If the fall height is If over 600m what is the calc for fall space
2/3 f/h +0.5
If forced movement what cfh is required
1m min.
Minimum dimension of impact area - static equipment and moving equipment other than swings, c/w, carousels rockers etc. (think of the graph)
1.5 up to 1.5 then apply calc 2/3 x height +0.5.
Can forced movement fall space be overlapped
No. But static can.
Can vertical poles or walls be in the falling space?
Yes, glancing.
What objects can be in the falling space
Equipment to aid balance. Support beams (vert).
Can free space be intersected by paths?
No.
What depth of loose fill is needed for a 3m fall
300mm installed at 400mm to allow for displacement
What height is turf/topsoil ok for
1m
What size gravel is OK
2-8mm grain size
What size bark is OK
20-80mm
What size sand is OK
0.2- 2mm
What size wood chip is OK
5-30mm
If a platform adjacent is over 1m height does it need impact attenuation
Yes
