Southern Colorado
Innovative design and construction methods were required to construct a new walkout basement beneath the 1907 Mt. Carmel church, a masonry structure with an unreinforced sandstone block foundation, and a basement link to a new Music Hall.
The first phase was to construct a temporary soil nail shoring to allow for excavation of the addition. The wall was 16-22 feet tall, with 3-5 rows of soil nails installed 15-20 feet into the bank. A four inch shotcrete face was placed over the bank.