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660 EASING OF PILE DRIVABILITY
• Usage: Submit proposals and details of effects on pile bearing capacity.

696 METHOD OF PLACING PILE FILLING
• Designation: All.
- Requirement: site specific.

700 PLACING FILLING IN DRY BORINGS AND CASINGS
• Requirements additional to SPERW, clause B3.5.2.3:
- Height of lower end of delivery tube above bottom of reinforcement cage
(maximum): site specific.
- Free fall of concrete (maximum): site specific.

720 PREPARATORY PREBORING FOR LOW FRICTION SLEEVING OR SURROUND
• Requirement: Carry out to base of low friction treatment.
• Preboring diameter: to suit sleeving.

745 TESTING MORTAR AND CEMENT GROUT
• Standard: BS EN 445.
- Exceptions: Strength test using 100 mm cubes.
• Preliminary tests: Required if satisfactory evidence of mix suitability is not available
from other sites..
• Frequency of compliance testing: As BS EN 446, clause 8.4.

755 PREPARATION OF PILE HEADS FOR INTEGRITY TESTING
• Preparation: To suit test method.
• Inconsistencies: Submit report on inconsistencies which could inhibit execution or
interpretation of test.

760 PILE INTEGRITY TESTING - GENERAL
• Method: Submit proposals.
- Satisfactory evidence in support of proposals: Submit.
• Period between casting and testing (minimum): 7 days.
• Pile group designation: All.
- Number of piles to be tested: 25%.
- Locations: One in each pile group, and any other pile where construction
anomalies have been noted.
• Programme: site specific.
• Other requirements: site specific.

780 AXIAL MAINTAINED LOAD TESTING OF PRELIMINARY PILES
• Type of test: site specific.
- Initial proof load test: site specific.
- Completion of test: To maximum test load or failure to stabilise as SPERW, clause
B15.13.3.
• Pile group designation: All.
- Test pile construction: As for working piles.
Location: site specific.
- Number of piles to be tested: site specific.
- Test load (maximum): site specific.
• Special requirements: site specific.

RotF generic (intermediate) NBS 2014 6118-AEW-XX-XX-NBS-A-01