Page 164 - Urban Construction Project Management

Logistics 119

HOIST #1 Exhibit 6-3
Labor and materials
Hoists, elevators
loading dock plan.
Loading/unloading area

Temporary stairs

Tower
Temporary
outline
stairs
Permanent stairs
Existing
buildilng

Elevator banks
Temporary
stairs

Large projects might have multiple cranes operating simultaneously. Both the prime
contractor and subcontractor could have a role in selecting the number, type, and loca-
tion of these cranes. Factors might include:
1. Project schedule and attendant requirements for crane picks
2. Available area for picks from the street and movement within the site
3. Cost of crane and operator versus productivity gain
4. Potential interference between cranes in operation or with other equipment operating
on the site
5. Need for the hook to reach where needed with requisite lift capacity
6. Needs of trades to work independently of other trades with respect to lift scheduling
7. Potential interference between space requirements for cranes taken out of service
and poised for storm winds
8. Potential benefit of having one crane erect or dismantle another crane
9. Load bearing of the ground to support the crane and its lifting load