Guide for Design of Steel Transmission Towers
SecondEdition
TaskCommittee onUpdating Manual52 Prepared by theof theStructural Divisionof theAmericanSociety of Civil Engineers
ABSTRACT
ASCE Manual52.GuideforDesign of Steel Transmission Tow-ers serves asa basisforthe design ofboth guyed and seif supporting steel transmission towers.The basic design remendations areappropriate forindividualmembersof truss-type structures.Chapters ongeometric configurations andmembersincludeshot-rolledandcold-formedmembers.Other tures covered and the applicable analysis criteria. Design offabricationqualityassuranceandqualitycontrolconstruction subjects covered include designof connections detailing andand maintenance foundations and testing.
Library of Congress Cataloging-in-Publication Data
TaskCommitteeonUpdatingManual52of the StructuralDivi sion of The American Society of Civil Engineers.-2nd ed.
p.cm.--2nd ed.(ASCE manuals and reports on engi-neering practice:no.52) Rev.ed.of:Guide fordesign of steel transmission towers.1971.Includes bibliographies and index. ISBN0-87262-667-9struction-Handbooks manuals etc.1.American Society of 1.Electric lines--Poles and towers-Design and con-CivilEngineers.TaskCommittee onUpdating Manual52.ll. Guide fordesignof steel transmission towers.ll.Series.TK3242. 521.319'22'028-dc19 88-19277
CIP
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Copyright1988bythe American Society of Civil Engineers All RightsReserved. Library of Congress Catalog Card No.:B8-19277ISBN0-87262-667-9Manufactured in the United States of America.
MANUALSANDREPORTSONENGINEERINGPRACTICE
(As developed by the ASCE Technical Procedures Committee July 1930 and revised March 1935 February 1962 April 1982)
A manual or report in this series consists of an orderly presentationof facts on a particular subject supplemented by an analysis of limita-tions and applications of these facts.It contains information useful to theaverage engineer in his everyday work rather than the findings that"rule of thumbfor nonengineers.
Furthermore material in this series in distinction from a paperwork of a mittee orgroup selected to assemble and express informa- (which expresses only one person's observations or opinions) is thetion on a specific topic. As often as practicable the mittee is underthe general direction of one or more of the Technical Divisions andCouncils and the product evolved has been subjected to review by theExecutive Committee of that Division or Council.As a stepin thepro- cess of thisreview proposed manuscripts are often brought before themembers of the Technical Divisions and Councils for ment whichmay serve as the basis for improvement.When published each workshows the names of the mittees by which it was piled and indicates clearly the several processes through which it has passed inreview in order that its merit may be definitely understood.
In February 1962 (and revised in April 1982) the Board of Directionvoted to establish:
A series entitled Manuals and Reports on Engineering Practice'toinclude the Manuals published and authorized to date futureManuals of Professional Practice and Reports on Engineeringhave beenrefereed inamannerapprovedbytheBoardCommittee Practice. All such Manual or Report material of the Society wouldon Publications and would be bound with applicable discussion in books similar to past Manuals. Numbering would be consecu-tive and would be a continuation of present Manual numbers.Inpublications may be authorized.
AVAILABLE*MANUALSANDREPORTSOF ENGINEERINGPRACTICE
Number10 Technical Procedure for City Surveys13 Filtering Materials for Sewage Treatment Plants14 Acumodation of Utility Plant Within the Rights-of-Way of Urban Streets and Highways31 Design of Cylindrical Concrete Shell Roofs33 Cost Control and Accounting for Civil Engineers34 35 Definitions of Surveying and Associated Terms A List of Translations of Foreign Literature on Hydraulics36 WastewaterTreatmentPlantDesign37 Design and Construction of Sanitary and Storm Sewers40 41 Plastic Design in Steel-A Guide and Commentary Ground Water Management42 Design of Structures to Resist Nuclear Weapons Effects44 Consulting Engineering-A Guide for the Engagement of Report on Highway and Bridge Surveys45 Engineering Services46 Report on Pipeline Location47 Selected Abstracts on Structural Applications of Plastics Urban Planning Guide49 50 Report on Small Craft Harbors51 Survey of Current Structural Research53 52 Criteria for Maintenance of Multilane Highways Guide for the Design of Steel Transmission Towers54 Sedimentation Engineering55 Guide to Employment Conditions for Civil Engineers56 Foundations of Buildings Subsurface Investigation for Design and Construction of5759 58 Structural Analysis and Design of Nuclear Plant Facilities60 Computer Pricing Practices Gravity Sanitary Sewer Design and Construction61 Introductory Manual on Computer Services62 Existing Sewer Evaluation and Rehabilitation63 64 Manual on Engineering Surveying Structural Plastics Design Manual65 Construction Cost Control66 Structural Plastics Selection Manual Wind Tunnel Model Studies of Buildings and Structures67
Guide forDesignof SteelTransmissionTowers Manuals andReports on In 1971 the American Society of Civil Engineers(ASCE)publishedEngineering Practice-No.52."The Manual was developed to serve as auniformbasisforthe structuraldesign of self-supportingsteel transmis- sion towers.The major thrust of the Manual was toprovidean acceptedreference for angle shapes used as pin-connected members in trusses.The basicremendationsincludedmodifiedprocedures tomoreclosely reflect the load capabilities of angle members.Manual52 has been used extensively in the United States and abroad as the basis fordesign specifications.
In 1984 an ASCE mittee was established forupdating Manual52 toreflectnew design procedures availabilityofnew shapes and materials changesinloading criteria andresults ofnew test data.ThisnewMan-ual Guide forDesignof SteelTransmissionTowers has been developed tocover the scope ofour assignment but stillretain the simplicityof the original Manual.Commentariesto Chapters4and5 have been includedtoprovidebackground and toretainthe basicmaterial coveredinthe oldManual.
andresistance factor design(LRFD)for transmission towers.The Task Other ASCE mittees areevaluating thefeasibility ofusingloadCommittee onUpdatingManual 52will work closelywith thesemit-teestodevelop appropriate dataforthemember and connectiondesignremendationsofthisManual.
The mitteeisgrateful to thePeer Review Committee for theirthoroughreviewandassistanceinclarifyingmanypartsof thesere-mendations:DanJackman Chairman，RobertHoop RobertRoane PaulTedesco and Dave Sudhoff.
The mittee wishes to thank Anthony M.DiGioia John Mozer Ronald Randle Wiliam Howard DannyVillaluz and Don Albritton for
