Patent ID: 8807512

Claim:
An underground fluid storage tank hold-down system for holding down an underground cylindrical fluid storage tank in a hole that has been excavated, the underground tank hold-down system comprising: a multiplicity of paired hold-down straps, each having a first end and a second end, a length, and a width; a multiplicity of paired deadmen anchors adapted to be placed to either side of the tank when the tank is in the hole, the deadmen anchors each with anchor upstanding loops; and a tank hold-down assembly comprising a take-up coupler assembly having a pair of arched sections, including a first arched section and a second arched section and a threaded engagement assembly, the threaded engagement assembly including a threaded member and a receiving member adapted to receive part of the threaded member; wherein the paired straps are adapted to engage the arched sections at a first end of the straps and the paired deadmen anchors at a second end of the straps; wherein the first and second arched sections each have a curved base with an upper and a lower surface and a first and a second end and a body therebetween, comprise a multiplicity of strap engaging hooks extending upward from the upper surface thereof and walls to engage the threaded engagement assembly such that rotation of the threaded member when it is engaged with the receiving member brings the two sections closer to one another and snugs the straps down to the walls of the underground tank; wherein the multiplicity of hooks on each arched section is two and wherein the hooks on each arched section are both spaced apart so they are each a first and a second distance from the second end of the arched sections, the first distance being more than the second distance and offset to either side of a longitudinal axis of the arched sections, the offset at a minimum at least about equal to half the width of the hold-down straps.