FEM 1.001 PDF
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single bearing sb 28 dimensions and technical data rev. 10-08 1) if ordered with manual release lever *) average friction factor of standard material combination for crane brake layout use safety factors documented in the fem 1.
this paper describes an investigation of the collapse of a 250+ ft tall, hammerhead, freestanding tower crane during a category 2 hurricane at a construction site in southeast florida. the investigation showed that the technical cause of the collapse was a tensile failure of the anchor bolts connecting the lowest tower section to the expandable legs cast into the concrete foundation. a subsequent independent study revealed that the out-of-service design-base wind speed for the tower, originally designed and manufactured in the mid-1980s under the rules for the design of hoisting appliances by the european handling federation (fem 1.001), to be inappropriate for the expected wind conditions in southeast florida during hurricane season. our work showed that the collapse during this specific hurricane event would not have occurred if the tower crane in this configuration were more appropriately rated to resist wind conditions consistent with sei/asce 37: design loads on structures during construction.
disc brake sb 13.2 dimensions and technical data rev. 10-08 *) if ordered with manual release lever right-hand execution left-hand execution *) average friction factor of standard material combination all dimensions in mm alterations reserved without notice for crane brake layout use safety factors documented in the fem 1.001, section 1 thruster type d8a7b2ff72
Rail construction technique, alternative placement of anchor bolts, and the proposed design should be evaluated on a case-by-case basis (FEM 1.001, Table 2.2.4.3). Other potential solutions for anchor bolt placements include the use of back-up drillings.
For concrete-anchor bolts, the anchor bolt should be driven in a compression-free manner. For construction, such anchors are driven at least 25 mm (1 inch) into the concrete and separated from the carrier plate by a tensile metal wedge, the form of which is covered in the FEM 1.001.
Disc Brake SB 38 Dimensions and technical data Rev. 12-07 Right-hand execution, motor or gearbox mounted*) Average friction factor of standard material combination All dimensions in mm Alterations reserved without notice For crane brake layout use safety factors documented in the FEM 1.001, Section 1 Thruster type Left-hand execution, motor or gearbox mounted Left-hand execution *) Average friction factor of standard material combination All dimensions in mm Alterations reserved without notice For crane brake layout use safety factors documented in the FEM 1.001, Section 1 Thruster type Average friction factor of standard material combination All dimensions in mm Alterations reserved without notice For crane brake layout use safety factors documented in the FEM 1.001, Section 1 Thruster type Brake torque MBr in Nm Friction factor = 0,4*
Assume that a specified value is not shown as a number or is not included in its definition. This is recorded as n/a in the FEM 1.001. This is the equivalent to the symbol n/a as a number, but the symbol n/a is preferred for a general structure. In addition, when the total number of all symbols is reduced to one, the symbol n/a is preferred.