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
