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ASTM D-558, D-559, D-560, D-698; AASHTO T-99, T-134, T-135, T-136. The 12" drop of the 5.5 pound Standard Compaction Hammer is controlled in a tubular guide sleeve which is machined from tubing with an integrally spun end cap.This manufacturing technique eliminates the possibility of the cap being knocked out when accidentally struck by an upward […]
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The 12" drop of the 5.5 pound Standard Compaction Hammer is controlled in a tubular guide sleeve which is machined from tubing with an integrally spun end cap.This manufacturing technique eliminates the possibility of the cap being knocked out when accidentally struck by an upward blow during the compaction process.
| Hammer. | 2″ diam. (50.8 mm); 5-1/2 lbs. (2.49 kg). |
| Drop | 12″ (305 mm). |
| Guide Sleeve | Machined steel tubing with integrally spun end cap; air pressure release holes. |
| Weight | Net 9 lbs. (4.1 kg). |
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