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Design Standards AISC Steel Construction Manual

All Gorbel® Jib and Work Station Cranes are in accordance with OSHA Specification 1910.179 and ANSI Specification B30.11, as they apply to Jib and Overhead Cranes. All Gorbel® Work Station Cranes meet or exceed the requirements of MMA MH27.2 specification for enclosed track systems. All Gorbel® Cleveland Tramrail® systems meet or exceed the requirements of MMA MH27.1.

All Work Station Cranes are in accordance with the following Canadian Standards as they apply to Overhead CranesCSA Standard B167-96 and CSA Standard C22.2 No.33-M1984 (re-affirmed 2004)

All Gorbel® Jib and Work Station Cranes have a design factor of 15% of the allowable capacity for hoist weight and 25% of the allowable capacity for impact.

 Fabrication Standards All welding is in accordance with AWS D14.1, and is performed by certified welders.

All holes in steel with bearing loads are either punched or drilled. Flame cut holes are not permitted in these applications.
 Material Standards All structural shapes used by Gorbel are a minimum of ASTM A-36 designation. All pipes are structural grade ASTM A-53 and all tubing is ASTM A-500.

All plate and round bar has minimum yield strength of 36 KSI.
 Painting procedure All Gorbel® Jib and Work Station structural components are shotblasted and/or washed utilizing a high pressure/high temperature iron phosphate solution prior to painting. A conventional air-assisted, airless paint system is used to apply a high solids industrial baking enamel which is cured at elevated temperatures inside and industrial oven.

Some pre-assembled components (ex. Work Station Crane end trucks and hoist trolleys) are powder-coated finish.
 Deflection Allowed

Consider both deflection and stress.  The difference in elevation of the track between an unloaded crane and fully loaded crane; measure in inches. L= support center distance.  Gorbel tends to have stricter deflection guidelines than others in the industry because we consider both deflection and stress.

Work Station Cranes: Typical design guidelines are L/450 for bridge cranes

Work Station Jib Cranes: Typical design guidelines are L/320 for wall mounted (WSJ200), L/200 for free standing (WSJ360), and L/450 for aluminum work station jibs (AL100).

Jib Cranes: Typical design guidelines are L/150 for wall cantilever (WC), free standing (FS), mast type (MT), and L/450 for wall bracket (WB) cranes. Due to configuration restrictions some models may not meet these guidelines.

 

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