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Handbook for Playground Safety <br />D4 10- <br />[Al _ D4 ► <br />D1 ► <br />D1 ► <br />60" <br />► D2 <br />ff <br />D3 <br />Figure 23. Minimum Clearances for Single -Axis Swings <br />Table 7. Clearance dimensions forswings <br />Reason <br />Dimension <br />Toddler <br />Full bucket <br />Preschool -age <br />Belt <br />School -age <br />Belt <br />Minimizes collisions between <br />a swing and the supporting <br />structure <br />D1 <br />20 inches <br />30 inches <br />30 inches <br />Minimizes collisions between <br />swings <br />D2 <br />20 inches <br />24 inches <br />24 inches <br />Allows access <br />D3 <br />24 inches <br />12 inches <br />12 inches <br />Reduces side -to -side motion <br />D4 <br />20 inches <br />20 inches <br />20 inches <br />• Fiber ropes are not recommended as a means of suspend- <br />ing swings since they may degrade over time. <br />• Swing structures should be located away from other <br />equipment or activities to help prevent young children <br />from inadvertently running into the path of moving <br />swings. Additional protection can be provided by means <br />of a low blockade such as a fence or hedge around the <br />perimeter of the swing area. The blockade should not be <br />an obstacle within the use zone of a swing structure or <br />hamper supervision by blocking visibility. <br />5.3.8.2 Fall height <br />The fall height for swings is the vertical distance between <br />the pivot point and the protective surfacing beneath it. <br />5.3.8.3 Single -axis swings <br />5.3.8.3.1 Belt seats used without adult assistance <br />• The use zone to the front and rear of single -axis swings <br />should never overlap the use zone of another piece of <br />equipment. <br />• To minimize the likelihood of children being struck by a <br />moving swing, it is recommended that no more than two <br />single -axis swings be hung in each bay of the supporting <br />structure. <br />37 <br />