PILE DRIVING: 05. All piles shall be driven within 3 inches of the locations defined on the drawings, The piles mst be driven not more than 1/8 inch per foot from vertical, and the tops shall be driven to within 2 inches of the indicated elevations, 06, All piles are to be driven their full 50~foot length below cut-off grade. O7. in event that either (a) refusal is met before the piling is driven to grade, or (b) the average driving resistance during the last 5 feet of driving is less than 25 blows per foot, this fact and all pertinent observations of driving behav-— ior, including the complete driving record, should be immediately commnicated to the design office, 08. Jetting may be employed if necessary to secure the desired tip elevations, However, the jet mst be withdrawn and the piles driven with the hammer alone for the final 5 feet of penetration, RECORDS: 09. The tip elevation for each pile driven shall be recorded. 10, The blows per foot of penetration shall be recorded for all piling during the last 5 feet of penetration; for 20 FIGURE 5.%6, (Continued.) 5-86