Sherman-Dixie News
Laser and video inspections reveal the true condition of installed pipe
Recent advances in laser video imaging have cast serious doubt on the long-term performance and durability of HDPE pipe. Using a projected light ring and a highly sensitive robotically operated camera, laser and video imaging is able to determine pipe distortion such as racking, crown flattening, and vertical and horizontal deflection that were often undetectable through traditional video inspection methods. Laser video technology can also identify joint offsets, cracking, spalling, rusting, and excessive debris.
As the light ring moves through the pipe, computers and frame grabbing software capture images where deflection of the light ring is detected. Software is then able to determine both the extent and nature of the deflection.
At Sherman Dixie, we encourage inspection of all installed infrastructure to ensure that correct bedding and backfill requirements have been met and that proper soil densities and compaction efforts are realized. As outlined in ASTM D 2321 and AASHTO Section 30, we believe that periodic Post Installation Testing Procedures should include, at a minimum, video and mandrel testing.
We believe in the lasting quality and performance of our products and would encourage all contractors and owners to protect their value by requiring, post installation testing.
Recent HDPE Post Installation Inspect reporting Using Laser and Video Imaging
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