Optimal selection of tower cranes, mobile cranes or balcony cranes depends on the structural steel scope, site conditions, lifting requirements and safety factors. Careful consideration brings the right tool for lifting during erection.

Layouts determine number of picks and capacity for largest lifts. Tower cranes offer costs savings for projects requiring over 500 lifts from two fixed points spanning typical construction durations. Multiple pads cut streets for erection across sites.

Crawler, rough-terrain and all-terrain mobile cranes transport the heaviest loads best suited within their capacities. Crawler cranes stabilize with outriggers though damaging ground surfaces. Smaller capacity truck cranes avoid infrastructure weight limits.

Compact footprints favor articulating or telescoping boom cranes accessing restricted areas while minimizing tailswing danger zones. Adjustable counterweights balance variable boom angles and radii. Outriggers require soil stability checking with geotechnical engineers.

Balcony cranes climb floors bolt-by-bolt with personnel, lifting from safe working platforms as erection proceeds upwards. Guide rails support jibs without guying towers through structure. Reaching limited radii necessitates auxiliary hoists or repositioning frequently.

Lifting schedules weigh loads against crane ratings under anticipated setup configurations and real capacity values based on actual installed counterweight. Dynamic analyses rate lifts over time or distance subject to grain acceleration, deceleration and boom angles.

Critical lifts develop detailed lift plans, engineered lifts bubbles establish exclusion zones protecting workers and structures below lifts. Public protection barricades catchfalling objects or swing radii. Spotter communication coordinates safely.

Crane selection directly influences project duration, safety, quality and budget. Experience selecting proper equipment minimizes installation complexities matching capacity to the heaviest picks, site variables and erection sequences. Safety oriented decisions yield successful steel assembly.

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