Abstract: Systems and methods for containing a hazardous fluid are described, in which first and second precast concrete segments are coupled together to form wall elements having a plurality of void spaces. A precast concrete floor segment can be coupled to the wall elements to form a cavity, and a metal liner can be disposed within the cavity to form a container capable of storing a hazardous fluid. An external barrier configured to be impervious to the hazardous fluid can be coupled to an exterior portion of at least one of the first and second segments.

Abstract: Methods and apparatus for locating anchor points embedded within building structures are presented. Anchor points within a building structure (e.g., column, pillar, floor, wall, etc.) can be covered by an anchor point cover to prevent the anchor point from becoming contaminated by poured concrete used to form the building structure. The anchor point cover can be placed so that a top portion of cover is just beneath the surface of the concrete building structure. In addition, an anchor point locator can be placed near the anchor point. Once the poured concrete hardens, the anchor point can be located by detecting a signal originating from the anchor point locator. One can remove hardened covering material and the anchor point cover to reveal the anchor point.