Fire Service Ground Ladders (9th Edition)-All Chapter Numbers

inches. for identification or visibility. Pawl torsion springs should be replaced every 5. years. or as needed. Cylindrical supports used for ladder testing should be 1. inch. in diameter and placed under the test ladder . 6. inches. from each end. Test load area for the horizontal bending test is 32. inches. long over the actual center of the ... ................
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