5 Apparatus5.1 Option A—Free-Fall Drop Tester, conforming to the conditions specified in 10.2.1 (see Fig. 1).5.1.1 The impactor shall have a mass of 9 lb ± 0.4 lb (4.1 kgw ± 0.2 kgw) and dimensions of 12 in. × 12 in. × 12 in. (300 mm × 300 mm × 300 mm). The impactor shall … Continue reading ASTM D5265 – Standard Test Method for Bridge Impact Testing – Testing Equipment