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Handbook for Playground Safety <br />B.2.4 Angles <br />The angle of any vertex formed by adjacent components <br />should be greater than 552, unless the lower leg is horizontal <br />or projects downwards (see Figure B12). An exception to <br />this recommendation can be made if a rigid shield is <br />attached to the vertex between adjacent components and <br />the shield is of sufficient size to prevent a 9 inch diameter <br />circular template from simultaneously touching components <br />on either side of the vertex (see Figure B13). <br />B.2.4.1 Test procedure <br />Step 1: Identify angles formed by two adjacent components. <br />Step 2: Determine if the angle is Less than 55°. <br />No: Pass. Stop. <br />Yes: Continue. <br />Step 3: Determine if the lower leg is horizontal or points <br />downward. <br />Yes: Pass. Stop. <br />No: Continue. <br />Step 4: Place the large head template (Figure B5) into the <br />angle (Figure B13). <br />Pass: The large head template is stopped before its <br />perimeter can touch both sides of the angle <br />simultaneously. <br />Fail: The large head template touches both sides of <br />the angle simultaneously. <br />Angle A should exceed 55° <br />Angle A is not subject to the greater than 55° <br />recommendation if one leg of the vee is <br />horizontal or slopes downward from the apex <br />Figure B12. Recommendations for angles <br />Less Than 55° <br />Large Head <br />Template <br />(see Appendix B) <br />Figure B13. Test for angles less than 55° <br />(example passes). <br />47 <br />