CHICAGO, IL –Simpson Gumpertz & Heger (SGH) was out this week at the Shrine investigating the condition of the limestone on the interior face of the West Pediment Wall. The brick below the limestone needs to be removed to install steel plates for the new steel to tie back into the existing building structure. The brick condition at this location is poor due to being open to the weather for two season. More brick was removed than anticipated. The removal of the brick compromised the stability of the limestone. SGH was on site to make recommendations and construction continues to get ready for the steel delivery in January.
Late last week, Wiss, Janney, Elstner Associates (WJE) was on site at the fabrication shop for the mock up of Truss No. 1. The mock up is done to demonstrate the proposed range of aesthetic effects and workmanship of steel surfaces and welded and bolted conditions. Truss No. 1 is now ready to be primed and painted. Truss No. 2 and 3 are both half way done. Steel is on schedule for a late January delivery to the job site!
Scaffolding was removed from the east wall behind the altar and moved to the west wall and erected on the choir loft. This will allow for access to the high pediment for masonry repairs.
Workers used the Genie lift to remove the purlins that attach to Truss No. 1 and the west pediment wall. This will allow access for the masons to make masonry repairs.
Shop fabrication continues: Truss No. 1, 2 & 3 are being made. Miscellaneous smaller steel angles, plates, etc. are done and will be delivered to the site next week.
Temporary power has been set up. The electrical to the building was removed after the fire. Temporary power has been set up to use for this phase of construction for the use of heat and power tools.
Simpson Grumpertz & Heger (SGH) has provided details and specifications for the rebuild of the limestone at the southwest corner. These stones were removed immediately after the fire due to unsafe conditions.
Wiss, Janney, Elstner Associates (WJE) has provided direction for the tie in of the existing steel in the southwest corner. The heat of the fire badly damaged this area of the building, compromising the existing steel that will remain. WJE has provided the direction and details to tie the steel back into the building to be able to take future uplift wind loads.
Raffin Construction Co. provided an updated detailed schedule. January 26, 2018 is the delivery date for the steel to be on site.