The Week of March 4, 2018 — Anchoring the Steel Support (Spline) Beams to the Isolators in Section 2, Welding and Decking.

With the start of this week, the steel skeleton in section one (1) reached the third floor. Section three (3) will reach the third floor by midweek. While the welders continue their work on sections one (1) and (3), the ironworkers will begin anchoring the steel support (spline) beams to the isolators in section two (2).

This oversized low bed transport truck, carrying a large and heavy steel spline beam node, was so large it required two escort vehicles.

A steel support spline beam was just lowered and is being maneuvered by the ironworkers to rest on two isolators. Jason, with his back to the camera, is checking to make sure the holes at the bottom of the node line up with the holes in the isolator.

This morning (March 5, 2015), an oversized low bed transport truck, hauling a large steel support spline beam, slowly entered through the site’s east gate. This short video clip shows the arrival of the transport truck and the eventual lowering of the large heavy piece of steel onto two isolators in section two (2).

The steel skeleton of sections of one (1) and three (3) rise above the cap slabs. A portion of the structure and the crane are reflected in the standing water.

Standing on a float above the ground floor,  a closeup of a welder with helmet bent over his work area as he welds along the bottom of a beam.

In this expanded view the same welder is dwarfed by the size of the columns and beams. Presently, the steel rises two stories above grade.

On the following day (03.08.18), I saw smoke rising from the moat area on the west side. Looking down, I saw a welder below me on “A” level who was welding a column at its base. Typically it will take about a week to weld all around the column. To the right is the western moat with the isolator bases mounted to the foundation floor.

Down below in section two (2), the north crane is lifting the node on the south end (center) of the support beam in order to slide a metal plate (shim) between the isolator base and isolator. This plate is the same thickness that was milled from the underside of the node to level out the unevenness. The following video clip illustrates how this sequence is accomplished.

A video clip showing how a metal plate (shim) is slid between the isolator and isolator base.