R 408.41481
R 408.41481 Cofferdams.
Cite as Mich. Admin. Code R 408.41481
Rule 1481. (1) A cofferdam shall be designed by a qualified engineer and shall be
constructed and maintained in accordance with the design.
(2) If overtopping of the cofferdam by high waters is possible, then means shall be
provided for controlled flooding of the work area.
(3) The employer shall develop and post warning signals for the evacuation of
employees in case of an emergency.
(4) A cofferdam shall have not less than 2 means of egress.
Runways, bridges, or ramps shall be provided with guardrails as prescribed in
Construction Safety Standard Part 45 “Fall Protection,” as referenced in R 408.41410.
(5) If cofferdams are located close to navigable shipping channels, then warning
devices that are visible to vessels in transit shall be provided.