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b '. VOLUME I - BOOK 7 TEXAS UTILITIES GENERATING COMPANY ! COMANCHE PEAK UNIT NO. 2
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TABLE OF CONTENTS. g ,,,,,,,g , CABLE TRAY HANGER LOAD APPLICATION LOCATION STUDIES (2/20/86) R1 SUBJECT PAGE y 1.0 Introduction ~* - 3 2.0 References 4 3.0 Conclusions 3.1 Vertical Load Study 5-l 3.2 Longitudinal Load Study 5 1 4.0 Calculations l 4.1 Vertical Load Study 6 4 ) ( 4.2 Longitudinal Load Study 13 O e l i 1 l i
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PRoeLEM Two studies, performed to detennine realistic locations for points of application of cable tray vertical and longitudinal loads onto cable i i
+ tray hanger tier members, are documented in this book. '
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___ VOLUME I.- BOOK 7 .. TABLE OF CONTENTS CONTENT PAGE 1.0 Introduction 3 , 2.0 References -- 4
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3.0 Conclusions
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3.1 Vertical Load Study 5 3.2 Longitudinal Load Study 5 --- 4.0 Calculations 4.1 Vertical Load Study -6 4.2 Longitudinal Load Study 13 e e
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1.0 INTRODUCTION
t Two studies have been pe[fonned to detennine realistic locations for points of appidcation_of_ cable _ tray. vertical and longitudinal loads.onto cable tray hanger tier mernbers.7ese studies ~ were performed using manual cal - -~ culation techniques. The conclusions of these studies provide the technical . . _ -
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justification for the . load locations presented in Attachments. B1 and B2
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i_ ___._2. 0 . . REFERENCES.____ _ _ _ _ _ _ _ _ _ . . . __;__ __.. _ ___=___1,_Ebasco General.jnstructions For Cable Tray Hanger Analysis for
-Cananche- Peak SES No. 2, Rev.1 August-23,1985. -
2.. Advanced. Mechanics of Materials, Seely and Smith, 2nd. Ed.1952. g-- g e &-M* e e. e+ -+ w_ e w 4_.
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enoscer coMANCHF PFAK tlNIT ? susarev CABLE TRAY HANGERS - LOAD LOCATION STUDIES 1 l : . 4 ._ 3,0.. CONCLUSIONS _ _ . 32 1__ VERTICAL LOAD STUDY . _ .... ... . . _ _ . . . _ . _ _ _ For. cable tray. hanger configurations in which horizontal. trays are attached ~to channel-section hanger tier members, the location of the point of application of vertical downward load induced onto the tier
. _ . by.the tray.(tray. dead weight and tray. vertical. seismic downward
-- load) was studied. The results of this study demonstrate that the
~~ vertical load application point shown in Attachments B1 and B2 of ~~
. . .__ _ Reference 1, at the tier channel web centerline, is realistic.
b U 3.2 LONGITUDINAL LOAD STUDY , _ For longitudinal . type cable tray hangers _in which cable trays are __ _ clamped to channel-section hanger tier members, the location of the
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- . _ . point of application of longitudinal load induced onto the tier by the tray (longitudinal horizontal seismic load and thennal load) was studied. It was concluded that the load application point is dependent on the number of bolts used to connect the tray side rails to the tray clamps. For configurations in which only one bolt is used to connect each tray side rail to its clamp, the longitudinal load must be applied at the bolt location. For co'nfigurations in
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301/8-41
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