Stairs

Question 1

If a platform is 1m high do the stairs need a barrier or guardrail?

Answer 1

For stairs leading to platforms up to 1 m in height a guardrail may replace the barrier, providing the gap be- neath the guardrail is less than 600 mm when measured from the middle of the tread.

Question 2

Where do g/r or stairs start from on the stairs?

Answer 2

Guardrails and/or barriers shall be provided from the first step

Question 3

Should guard rails or barriers on stairs have grasp or grip?

Answer 3

Grasp max 60mm

Question 4

What is the max incline of a ramp

Answer 4

38 deg

Question 5

If the stairs are higher than 1m and steeper than 45 deg does the barrier need grip or grasp?

Answer 5

Grasp or a handrail

Question 6

What should you check if there are gaps between stairs?

Answer 6

Head entrapment

Question 7

What is the minimum depth of tread on stairs

Answer 7

110mm

Question 8

What is the special requirement if stairs are over 2m high

Answer 8

off set platforms 1m long or 90 deg change of direction

Question 9

Are guardrails acceptable on ramps?

Answer 9

For ramps leading to platforms up to 1 m in height a guardrail may replace the barrier, providing the gap be- neath the guardrail is less than 600 mm. Guardrails shall be provided from the beginning of the ramp.

Question 10

Size of chains?

Answer 10

maximum open-ing of 8,6 mm in any one direction except where connections are made, where the maximum opening shall be greater than 12 mm or less than 8,6 mm.

Question 11

What is min g/c under a standard swing (Type 1,2,3)

And then under a basket swing or tyre swing.

Answer 11

350 mm.
For tyre seats of swings of Types 1, 2 and 3, the ground clearance in the resting position shall be at least 400 mm. In the case of contact swings with vertical tyres as seats (see Figure 11), the ground clearance can be reduced to 100 mm minimum.

Question 12

What if the type 1,2,3 swings have tyre seats, what is the G/C?

Answer 12

at least 400 mm.

Question 13

What sort of GC is required for a contact swing that has vertical tyre seats?

Answer 13

100 mm minimum.

Question 14

What is the GC on single type pivot swings (tyre swings)

Answer 14

400mm - but this doesn’t apply in the direction of the beam, where they can contact. Note frame must be fitted with protection to protect the beam.

Question 15

What is The minimum horizontal dimension, between the side 􏰩of a swing seat and the adjacent structure in the rest

Answer 15

􏰁 20 % length of the suspension member (+ 200 mm). Measured where the chain links to the frame to the top of the seat.

Question 16

The minimum horizontal dimension, between adjacent swing seats

Answer 16

􏰁 20 % length of the suspension member (+ 300 mm).

Question 17

For Type 4 swings (contact) the minimum distance between the seat surface and the central axis shall be

Answer 17

400mm the seat is at angle of 90 deg.

Question 18

Calc for distance between suspension members of swings?

Answer 18

􏰁greater or equal to width of seat + 5 % length of the suspension member.

Question 19

Are fully rigid suspension members ok?

Answer 19

No, but triangles on the seats are oK

Question 20

Can you have more than one swing in a bay?

Answer 20

Two. (and they can be mixed infant and senior)

Question 21

Calc for swing FHF

Answer 21

(length of the suspension member (h2) ÷ 2) + height of swing seat at rest (h3)

Question 22

Calc for swing dimension area

Answer 22

0,867 × the length of the suspension member, h) and adding a fixed distance 1.75 or 2.25.

Question 23

What is the extra measurement synthetic surface to be free of obstacles

Answer 23

Add an extra 500mm

Question 24

Can you overlap falling space of swings

Answer 24

No.

Question 25

What does the area of impact area under a swing look like

Answer 25

It goes the length of calc .867 x suspension + 2.25 but width is just under the swing path, min 1.75. Note if seat wider than 500m then add the difference to the 1.75

Question 26

Single impact swings impact area - what does it look like?

Answer 26

Its is a circle based on the .867 x sup +2.25

Question 27

What type of swings require a secondary form of attachment

Answer 27

Single pivot swings (type 3)

Question 28

What type of swing requires a restraint bar?

Answer 28

Contact swing (type 4)