Henk Brassinga & Michael Brown 
Rapid Load Testing on Piles [PDF ebook] 
Interpretation Guidelines

A Rapid Load Test (RLT), developed to determine the initial stiffness and bearing capacity, is an economical and practical alternative to a Static Load Test (SLT). The broad application of RLT, however, was hampered by uncertainty about the interpretation of the test results. This book offers clear guidance on the available analysis techniques and