1. What are the concerns of project manager Bryan Lee?
He has many concerns. Do building methods and materials match those in the agreement? Are schedules met? Are costs kept within bounds?
2. Why do they engineers and construction workers use a boring machine to make tunnels instead of cut and cover construction?
Boring creates far less surface disturbance than cut and cover construction.
3. What do the worker’s do to protect themselves in the newly formed tunnels from harmful levels of gases found in the soil at the various new subway sites?
Powerful fans suck stagnant tunnels air through these dusts and out of the tunnels. As the foul air departs, fresh air rushes in.
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