Developing Production Pile Driving Criteria from Test Pile Data (2011) / Chapter Skim
Currently Skimming:
Pages 40-46
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 40... ...
40 INTRODUCTION The Phase II Survey consisted of telephone interviews of selected agencies based on their responses to the Phase I Survey. The goal of the Phase II Survey was to explore in more detail some of the practices highlighted in the survey responses, obtain more details about the experiences of the interviewees, and provide information concerning potential problems and difficulties in the interpretation of pile test results and their application to developing pile driving criteria.
|
From page 41... ...
41 and the HSDT signal-matching analysis are used to generate a site-specific wave equation analysis and determine final driving criteria. The SLT provides a set point where the pile resistance is known for a given stroke and blow count.
|
From page 42... ...
met the minimum blow count criteria for 24 consecutive inches. Piles may also be stopped for practical refusal (20 blows per inch, no more than 1⁄4 inch pile rebound, for at least 2 consecutive inches)
|
From page 43... ...
43 restrikes may be performed. When setup is investigated, test piles will have restrikes over a range of times up to 14 days after initial drive.
|
From page 44... ...
an acceptance blow count and minimum hammer energy or stroke. Restrike blows are only used if piles do not achieve the desired resistance at the estimated drive length.
|
From page 45... ...
45 is specified. For piles bearing in weathered rock, a refusal criterion of 20 blows per inch is specified instead of the pile tip elevation.
|
From page 46... ...
2005; Allen 2007)
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.