Figure 24. Example of full bucket seat swings 39 Handbook for Public Playground Safety • The full bucket seat materials should not present a strangulation hazard, such as might be presented with a rope or chain used as part of the seat. • Openings in swing seats should conform to the entrapment criteria in §3.3. • Full bucket seat swings should be suspended from structures that are separate from those for other swings, or at least suspended from a separate bay of the same structure. • Full bucket seat swings should not allow the child to enter and exit alone. • Pivot points should be more than 47 inches but no more than 96 inches above the protective surfacing. 5.3.8.3.3 Use zone for single-axis swings – belt and full bucket The use zone in front of and behind the swing should be greater than to the sides of such a swing since children may deliberately attempt to exit from a single-axis swing while it is in motion. See Figure 25. • The use zone for a belt swing should extend to the front and rear of a single-axis swing a minimum distance of twice the vertical distance from the pivot point and the top of the protective surface beneath it. • The use zone for a full bucket swing should extend to the front and rear a minimum of twice the vertical distance from the top of the occupant’s sitting surface to the pivot point. • The use zone in front of and behind swings should never overlap with any other use zone. • The use zone to the sides of a single-axis swing should extend a minimum of 6 feet from the perimeter of the swing. This 6-foot zone may overlap that of an adjacent swing structure or other playground equipment structure. 5.3. . Multi-axis (tire) swings Tire swings are usually suspended in a horizontal orientation using three suspension chains or cables connected to a single swivel mechanism that permits both rotation and swinging motion in any axis. • A multi-axis tire swing should not be suspended from a structure having other swings in the same bay. • Attaching multi-axis swings to composite structures is not recommended. • Swings should not be attached to composite structures. • Swing seats should be designed to accommodate no more than one user at any time. • Lightweight rubber or plastic swing seats are recommended to help reduce the severity of impact injuries. Wood or metal swing seats should be avoided. • Edges of seats should have smoothly finished or rounded edges and should conform to the protrusion recommendations in 5.3.8.5. • If loose-fill material is used as a protective surfacing, the height recommendations should be determined after the material has been compressed. 5.3.8.3.2 Full bucket seat swings Full bucket seat swings are similar to single-axis swings since they move in a to-fro direction. However, full bucket seat swings are intended for children under 4 years of age to use with adult assistance. • The seats and suspension systems of these swings, including the related hardware, should follow all of the criteria for conventional single axis swings. • Full bucket seats are recommended to provide support on all sides of a child and between the legs of the occupant (see Figure 24).
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