API STD 4-1940
SPECIFICATION FOR STANDARD RIGS AND DERRICKS (Tenth Edition)

Standard No.

API STD 4-1940

Release Date

1940

Published By

API - American Petroleum Institute

Status

Be replaced 2011-10

Replace By

API STD 4-1942

Latest

API STD 4-1944

Scope

FOREWORD (a) This specification@ for pumping@ cable tool@ and rotary drilling rigs and derricks@ was prepared by the API Committee on the Standardization of Standard Rigs and Derricks1 and is recommended for the use of the oil industry in all districts of the United States. (b) This specification covers dimensional and strength requirements of steel and wood derricks@ rig and derrick parts@ and capacity ratings for pumper structures@ (c) Another specification issued by this Committee is the following: 4-A: Rig Iron Standards (Covers dimensional data for standard rig irons.) (d) Revisions: This specification can be revised at any time by regular Committee action@ or@ in order to care for changes which mar prove necessary on account of obvious errors or inconsistencies. upon approval bythe Engineers' Subcommittee@ the matter may be referred at once by letter to the membership of the various Committees that have been active in drawing the specifications@ and a letter ballot taken on the proposed change@ which may then be made effective at once. 1In January. 1937@ Committee onStandardization of Rig Irons was merged with the Committee on the Standardization of Standard Rigs and Derricks.

API STD 4-1940 history

• 1944 API STD 4-1944 SPECIFICATION FOR STANDARD RIGS AND DERRICKS AND ACCESSORY EQUIPMENT (Twelfth Edition; Incorporates Supplement 1: June 1946)
• 1942 API STD 4-1942 SPECIFICATION FOR STANDARD RIGS@ DERRICKS@ AND ACCESSORY EQUIPMENT (ELEVENTH EDITION)
• 1940 API STD 4-1940 SPECIFICATION FOR STANDARD RIGS AND DERRICKS (Tenth Edition)
• 1936 API STD 4-1936 SPECIFICATIONS FOR STANDARD RIGS AND DERRICKS (Eighth Edition; Supp No. 1: September@ 1937)
• 1935 API STD 4-1935 SPECIFICATIONS FOR STANDARD RIGS AND DERRICKS (Seventh Edition)
• 1934 API STD 4-1934 SPECIFICATIONS FOR STANDARD RIGS AND DERRICKS (Sixth Edition; SUPP 1: September 1934)
• 1931 API STD 4-1931 SPECIFICATIONS FOR STANDARD RIGS AND DERRICKS (FIFTH EDITION)
• 1930 API STD 4-1930 SPECIFICATIONS FOR STANDARD RIGS AND DERRICKS (Fourth Edition; SUPP 1: February@ 1931)
• 1927 API STD 4-1927 Standard Rigs and Derricks (First Edition)