05.
BACKGROUND: The Standard Penetration Test (SPT) has its roots in the empirical observation of blows per unit measure of driving casing. The SPT method requires mechanized equipment to raise and drop a 140lb mass 30 in.. Numerous methods have been developed to miniaturize the SPT such that hand operated tools could be used at shallow depths where confined spaces or the need for expedience excludes the use of a mechanized SPT device. The late Prof.
5. Maintaining the assembly in a plumb position, drive the cone point l-3/4 in. (44mm) using the ring weight and allowing it to free fall 20 in. (bringing the ring weight to the uppermost position against the pullout anvil will assure a 20 in. drop). Count and record the number of blows required to achieve l-3/4 in. (44mm) penetration. 6. If desired, perform a second and third penetration test by driving the cone additional 3/4 in. (44mm) increments.
Individual Items for H-4202 Standard drive hammer H-4202.1 Sleeved drive hammer H-4202.1A E drill rod extension 1 ft. H-4202.21 E drill rod extension 2 ft. H-4202.22 E drill rod extension 2.5 ft. H-4202.225 E drill rod extension 5 ft. H-4202.25 Drive point w/1 ft. adapter H-4202.3 Drive point only H-4202.3DP Auger assembly, includes auger head, two connector pins, tee handle and one extension. H-4202.6A Auger Tee handle Auger Tee handle, stainless steel Auger extension.
Warranty Humboldt Mfg. Co. warrants its products to be free from defects in material or workmanship. The exclusive remedy for this warranty is Humboldt Mfg. Co., factory replacement of any part or parts of such product, for the warranty of this product please refer to Humboldt Mfg. Co. catalog on Terms and Conditions of Sale. The purchaser is responsible for the transportation charges. Humboldt Mfg. Co.
