Steel Sheeting Guides Used For Storm Water Project

A Midwest contractor was installing a 12-ft stormwater overflow line under an existing
parking lot. The contractor had determined the job would require an excavation depth of 20-ft with a linear run of 70-ft followed by a 90-degree turn and then another 70-ft linear run.  The contractor’s Competent Person had classified the soil as either a Type B or Type C-60 soil depending on the area of the project. The excavation would occur in a downtown parking lot approximately 200 yards from an adjacent river. The 90-degree turn was a unique aspect of the project, as it isn’t something that’s addressed in most excavation projects and as a result required a little planning and thought to ensure it was properly addressed.

The contractor had extensive experience with steel sheeting guide frame systems and had selected the guide frames as the preferred protective system for the project. The contractor needed an excavation width of approximately 20-ft, so a 20-ft guide frame was used to enclose the open ends.  The contractor would then use a combination of 19-ft spreaders and additional guide frame panels for the interior of the system based upon structural loading and the needed vertical clearance to install the line. The contractor owned quite a bit of steel sheeting guide frame systems, but needed to supplement the fleet and was very satisfied with the equipment, turnaround, and service provided by NTS.