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API 4F – SPECIFICATION FOR DRILLING AND WELL SERVICING STRUCTURES




API 4F – Specification for Drilling and Well Servicing Structures

Marking Information

Nameplate, Mast and Derrick Nameplate Information, Substructure Nameplate Information, Crown Block Assembly Nameplate Information

Standard Ratings

Derrick-Stationary Base, Mast with Guy Lines, Mast without Guy Lines, Mast and Derricks Under Dynamic Conditions, Substructures, Substructure Under Dynamic Conditions, Crown Block Assembly

Design Loading

Derrick-Stationary Base, Mast with Guy Lines, Mast without Guy Lines, Derricks and Mast Under Dynamic Conditions,Substructures,Substructure Under Dynamic Conditions,Guide Tracks and Dollies,Crown Block Assemblies

Figures
Diagram of Projected Area
Derrick Dimensions
Derrick Windows
Foundation Bolt Pattern for Derrick Leg

Tables
Height Coefficients, C h
Conversion Values (For O-50 Ft. Height)
Adjustment Factors for Sub-Size Impact Specimens
Derrick Sizes and General Dimensions



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