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Drift at Runway Elavation

This document provides serviceability considerations and recommended maximum deformations for metal building structural elements supporting various equipment types. Table 3.4 lists the equipment type, structural element, expected deformation, and recommended maximums as well as applicable loadings. It covers cranes, including top running, cab operated, pendant operated, underhung, and jib cranes. Maximum inward and outward movements, deflections, and drifts are recommended for runway supports, beams, and frames supporting this equipment. Notes specify that values given are the sum of both runways and that the full text should be referenced for complete discussions.

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127 views1 page

Drift at Runway Elavation

This document provides serviceability considerations and recommended maximum deformations for metal building structural elements supporting various equipment types. Table 3.4 lists the equipment type, structural element, expected deformation, and recommended maximums as well as applicable loadings. It covers cranes, including top running, cab operated, pendant operated, underhung, and jib cranes. Maximum inward and outward movements, deflections, and drifts are recommended for runway supports, beams, and frames supporting this equipment. Notes specify that values given are the sum of both runways and that the full text should be referenced for complete discussions.

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Metal Building Systems Manual III.

Serviceability

Table 3.4
Serviceability Considerations - Equipment
EQUIPMENT STRUCTURAL
TYPE ELEMENT DEFORMATION RECOMMENDED LOADING
MAXIMUM
RUNWAY TOTAL INWARD CRANE VERTICAL
1/2″
SUPPORTS MOVEMENT† STATIC LOAD
RUNWAY TOTAL OUTWARD
1″ SNOW
SUPPORTS MOVEMENT†
RUNWAY HORIZONTAL
TOP RUNNING L / 400 CRANE LATERAL
BEAM DEFLECTION
CRANES RUNWAY VERTICAL L / 600; CMAA CLASS CRANE VERTICAL
BEAM DEFLECTION A, B, C STATIC LOAD
RUNWAY VERTICAL CRANE VERTICAL
L / 800; CMAA CLASS D
BEAM DEFLECTION STATIC LOAD
RUNWAY VERTICAL L / 1000; CMAA CLASS CRANE VERTICAL
BEAM DEFLECTION E, F STATIC LOAD
CRANE LATERAL
TOP RUNNING BARE DRIFT AT
H / 240 ≤ 2 ″ OR
CAB OPERATED FRAME RUNWAY ELEV.
10 YEAR WIND
CRANE LATERAL
TOP RUNNING BARE DRIFT AT
H / 100 OR
PENDANT OPERATED FRAME RUNWAY ELEV.
10 YEAR WIND
RUNWAY VERTICAL L / 450; CMAA CLASS
UNDERHUNG CRANE CRANE VERTICAL
FRAME DEFLECTION A, B, C
VERTICAL
JIB CRANE BOOM L / 225 CRANE VERTICAL
DEFLECTION

NOTES † − SUM OF BOTH RUNWAYS

NOTE: THESE TABLES PRESENT INFORMATION TAKEN FROM THE TEXT AND PUT IN
SUMMARY FORM. THE READER IS CAUTIONED AGAINST USING THIS MATERIAL
WITHOUT REFERENCE TO DISCUSSION PRESENTED IN THE TEXT.

III-26

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