PRECOMPRESSION REQUIRED IN PRESTRESSED CONCRETE PILING
Abstract
BREAKAGE OF PRESTRESSED CONCRETE PILES HAS OCCURRED IN SOME NAVAL DISTRICTS AND NOT IN OTHERS. IN THE FEW INSTANCES IN WHICH DRIVING FAILURES HAVE BEEN EXPERIENCED, THE INADEQUACIES WERE OVERCOME BY CORRECTION OF FAULTY HANDLING AND/OR DRIVING TECHNIQUES AND PROCEDURES. A SURVEY OF NAVAL ACTIVITIES, INDUSTRIAL DESIGNERS, SUPPLIERS, AND USERS OF PRESTRESSED CONCRETE PILING REVEALED NO EXPERIMENTAL OR RESEARCH DATA FROM WHICH THE OPTIMUM AMOUNT OF RESIDUAL (AFTER LOSSES) CONCRETE PRECOMPRESSION CAN BE DETERMINED. RESIDUAL PRECOMPRESSION RANGES OF 700 TO 850 PSI FOR PRETENSIONED PILES AND 600 TO 1200 PSI FOR POST-TENSIONED PILES ARE ADEQUATE FOR THE LOAD CAPACITIES AND LENGTHS CURRENTLY IN USE
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 07, 1959
- Accession Number
- AD0250605
Entities
People
- J.r. Keeton
Organizations
- Naval Facilities Engineering Service Center