Walls connector beams HSS 2” x 2” x 3/16”. Cap beam brackets HSS 2” x 2” x 3/16”. Vertical beams HSS 3” x 3” x 3/16”.
Wall attachment plates 6” x 6” x 3/8”. Bolts for connecting the plate to the wall HILTI KWIK BOLT 3 SS 304 ½.
The CBBT Parallel Thimble Shoal Tunnel Project will construct a new two- lane tunnel under Thimble Shoal Channel. When complete, the new tunnel will carry two lanes of traffic southbound and the existing tunnel will carry two lanes of traffic northbound.
As part of the CTJV Project and included within the temporary works needed on Portal Island 1, Chesapeake Tunnel Joint Venture (CTJV) asked AZIERTA for the design of the ducts serving the TBM and the supports needed for those ducts.
Many utility lines are required to support the tunnel advancement, this project prepared detailed utility support structures that attach to the side wall of the tunnel entrance shaft. These structures consist of ASTM A500 GR50 HSS TUBING, E70 electrodes for welding and stainless-steel post installed HILTI anchors or similar.
Loads on the support structures consists of pipes or ducts ASTM A53, Welded, Black.
