الفهرس 
SONIC INTEGRITY TESTING BACKGROUND AND REVIEWOnly 14 pages are availabe for public view
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Abstract
sonic integrity testing (SIT) of piles is becomeing a very important tool for pile construction quality control mainly because it is quick inexpensive and efficient in locating the major defects in a pile this is referred to the booming in the construction industry leading to the exensive use of piles as foundation structural elements SIT is a low strain method to characterize pile diameter changes by giving a relation between the pile head velocity versus time and/or depth interpretation of the results are based on the one-dimensional stress wave theory and require experienced personnel for proper interpretation SIT is having its limitations in locating some discontinuities ( diameter changes) of amaller area/volume relative to the pile cross-sectional area this is referred to the impact method ( impact length )and impact area.