Braintree-Weymouth Tunnels & Shafts

Braintree-Weymouth Tunnels & Shafts


Massachusetts

The Braintree-Weymouth Tunnels & Shafts project involved TBM mining through 2.3 miles of Cambridge Argillite and 0.4 miles of drilling and blasting.

Deere & Ault Consultant, Inc. staff worked on the differing site condition claims for the contractor. By mapping the tunnel and conducting a rock coring and laboratory exploration program, we were able to establish that stronger than expected rock was encountered. We also established a relationship between fracture spacing and penetration rate. Our efforts helped the contractor negotiate equitable settlements with the owner. We were also instrumental in the installation of ductile iron pipe and back-filling of the tunnel and shafts.

Client: Modern Continental

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