Material Handling & Rigging
Working Safely Around
Tower Cranes
Tower Cranes
OSHA 1926.1400 · DOB Crane Permit Required · NYC Electrical Clearance
Tower cranes dominate the NYC skyline — and they are operating directly over your head on this site. Every ground worker and every worker on upper floors must understand the hazards of working in a crane's operational zone and follow the rules that keep everyone alive. A dropped load or swing collision is unsurvivable.
The #1 Rule — Never Walk Under a Suspended Load
- No worker, visitor, or inspector should ever position themselves under a load that is being hoisted or swung
- If the crane is operating, assume it could swing or drop at any time. Get clear of the load path before work resumes
- The SSM establishes and marks the crane exclusion zone — stay out of it unless your work requires entry, and only with the operator's awareness
- On NYC sites: pedestrian exclusion zones on the sidewalk and street are required whenever the crane is operating over public property
Signal Person Authority
- Only one designated Signal Person communicates with the operator during a lift — everyone else steps back
- If you see an unsafe condition, raise your hand in the STOP signal — the operator is trained to stop at any STOP signal, regardless of source
- Never signal the operator informally — even a casual wave can be mistaken for a lift command
- Signal Person must have line-of-sight to the operator OR use a radio — never relay signals through a third party
What to Do if Something Goes Wrong
- Falling or swinging load: shout "HEADS UP" and move perpendicular to the load path — never run directly away from a swinging load
- Crane contact with power line: stay clear, call 911, keep others away — 100-foot exclusion zone until ConEd confirms line is de-energized
- Crane structural alarm or mechanical failure: evacuate the area immediately — crane operator will have specific protocols
NYC DOB Crane Requirements
- DOB Crane Permit must be posted at the crane — verify it's current before any work begins near the crane
- Crane operator must hold a valid DOB Crane Operator license — check it
- Daily pre-operation inspection documented in PL-004 (Crane Daily Log) before first lift
- Critical Lift Plan required for picks exceeding 75% of the crane's rated capacity or lifts near power lines
Discussion Questions
- You need to cross under the crane's operational zone to reach your work area. What do you do?
- You see the crane about to swing a load over an area where workers are standing. What signal do you give and to whom?
- The crane operator makes contact with an overhead power line. You are on the ground 20 feet away. What do you do?
- Who is the only person authorized to signal the crane operator during a lift?
Sign-Off
Project Address
Date
Time
Foreman / Supervisor
SSM / SSC Name & License No.
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