UFC 3-300-10N
25 May 2005
2-3.12.1.3 Crane runways must be designed so that vertical deflection does not
exceed L/600 for top running cranes and L/450 for under-running cranes, based on
maximum wheel load(s) without vertical impact force. (L = Runway beam span)
2-3.12.1.4 Buildings containing overhead cranes must be designed and configured with
the following considerations:
2-3.12.1.4.1 The distance from the floor to the lowest overhead obstruction must be
such as to allow for the required hook lift plus the distance from the saddle or palm of
the hook in its highest position to the high point on the crane plus clearance to the
lowest overhead obstruction.
2-3.12.1.4.2 The distance form the floor to the lowest overhead obstruction must be
such that the lowest point on the crane will clear all machinery or when necessary
provide railroad or truck clearance under the crane.
2-3.12.1.4.3 After determination of the building height, based on the factors above, the
crane runway must be located with the top of the runway rail at a distance below the
lowest overhead obstruction equal to the height of the crane plus clearance.
2-3.12.1.4.4 Lights, pipes, or any other objects projecting below the lowest point on the
building structure must be considered in the determination of the lowest overhead
obstruction.
2-3.12.1.4.5 Building structure deflections must be considered in the determination of
the lowest overhead obstruction.
2-3.12.1.4.6 A minimum clearance of 76mm (3 inches) must be provided between the
highest point of the crane and the lowest overhead obstruction.
2-3.12.1.4.7 A minimum clearance of 51mm (2 inches) must be provided between the
end of the crane and the buildings columns, knee braces or other obstruction including
pipes, conduits, etc.
2-3.13
Fall Protection. Fall prevention and protection must be considered at a
facility whenever there is a need to perform maintenance work or if storing of equipment
at heights is required. At the planning and design phase of a project, fall hazards
should be considered and eliminated whenever possible. When elimination or
prevention of fall hazards is not feasible, the design will include certified and labeled
anchorages meeting the requirements of OSHA and the American National Standards
Institute, ANSI Z359.1. Where fall protection is required in the vicinity of weight
handling equipment, care must be taken to prevent potential conflicts between the
weight handling equipment and the fall protection measures.
2-4
QUALITY ASSURANCE.
2-13
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