Abstract: An apparatus for aligning barrier wall modules atop a retaining wall includes a flat base transversely disposed relative to a longitudinal axis of the retaining wall. The flat base is positioned between adjacent barrier wall modules disposed in end-to-end relation to one another atop the retaining wall. The flat base includes a central part, first and second flat arms and first and second elongate bolts secured to and extending from respective free ends of the first and second flat arms in opposite directions. First and second nuts screw-threadedly engage the first and second bolts. First and second housings slidingly ensleeve the first and second arms and the first and second bolts respectively. The first and second housings abut first and second sides of adjacent barrier modules when the first and second nuts are advanced and control positioning of the barrier modules atop the retaining wall.

Abstract: A method for erecting a tower includes the steps of providing a first pre-cast section of concrete and positioning it atop a foundation. A radially-inwardly extending ledge is attached to an interior wall of the first pre-cast section and a plurality of jacks is positioned below the ledge in circumferentially spaced apart relation to one another. The ledge and the first pre-cast section are raised to a first height by operating jacks in an ascending mode. A second pre-cast section is positioned beneath the first pre-cast section after the first pre-cast section has been lifted to the first height. The first pre-cast section is lowered onto the second pre-cast section by operating the jacks in a descending mode or the second pre-cast section is lifted by operating the jacks in ascending mode. An assembly building that surrounds a base of the tower protects workers from inclement weather.

Abstract: A template system and column placement method which facilitates the placement of a column resulting in enhanced placement efficiencies for large scale column construction projects. In a preferred aspect of the present invention, a template for column placement can include a frame, at least one pivotal column engagement scaffold coupled to the frame and at least one docking collar extending from the pivotal column engagement scaffold and configured to secure a column to the pivotal column engagement scaffold. Additionally, a base can be provided in order to support the frame.

Abstract: A template system and column placement method which facilitates the placement of a column resulting in enhanced placement efficiencies for large scale column construction projects. In a preferred aspect of the present invention, a template for column placement can include a frame, at least one pivotal column engagement scaffold coupled to the frame and at least one docking collar extending from the pivotal column engagement scaffold and configured to secure a column to the pivotal column engagement scaffold. Additionally, a base can be provided in order to support the frame.

Abstract: The constructability of a concrete structure is facilitated by providing pre-assembled, modular frame units formed of steel or concrete beams and columns. Reinforcing bars have their opposite ends embedded in the beams that form each frame unit, but in most embodiments they are unattached to the columns because they extend through tubular debonding sleeves embedded within the columns. An elongate post-tensioning duct extends through each frame unit and an elongate tendon having opposite ends that may be placed under tension extends through the duct so that it compresses the frame unit. When a lateral load impacts against the frame unit, the reinforcing members that extend through the tubular sleeves stretch within the sleeves but their resilience urges the vertical columns to regain their vertical disposition when the impact passes. The elongate tendon that extends through the post-tensioning duct similarly urges the frame unit to regain its position of repose.