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QABLE. TRAY HANGERS 70.- D - G i
t CABLE TRAY HANGER GEOMETRY GROUPING
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VOLUME I - BOOK 8 TEXAS UTILITIES GENERATING COMPANY COMANCHE PEAK UNIT NO.1 TABLE OF CONTENTS CABLE TRAY HANGER GEOMETRY GROUPING I
Cable Tray Hanger Geometry Classification Code II Procedure for Grouping Cable Tray Hangers III Groups 4
Geometry Volume I Group Code Book Numbers j
BEAM 8
BEAM-300 CANI 8
CANT-300, CANT-301, CANT-302, 3
CANT-303, CANT-304, CANT-305, CANT-306, CANT-307, CANT-308, O
CANT-309, CANT-310, CANT-311, CANT-313, CANT-314, CANT-315, CANT-316, CANT-317, CANT-318, CANT-319, CANT-320, CANT-321, CANT-322, CANT-323, CANT-324, CANT-325, CANT-326, CANT-327, CANT-328, CANT-329, CANT-330 j-i t
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EBAECO Interoffice Correspondence t
DATE August 20, 1985 FILE REF.' SAG. TUG 2.1191 To R Alexandru/Y I2tifaoglu OFFICE LOCATION 82/2WTC b
h.
FROM D Fong/G Whritenour/F Hettinger OFFICE LOCATION 82/2WTC SUBJECT TEXAS UTILITIES GENERATING COMPANY COMANCHE PEAK SES UNIT 2 CABLE TRAY HANGER GEOMETRY CLASSIFICATION CODE This memo and its attachment describe the systematic approach and code used to classify cable tray hangers.(CTHs) by geometry for CPSES Unit 2.
This approach for=s the basis of the computerized CTH geometry data base compiled to facilitate the CTH design verification effort. The data base is accessed and manipulated by the APPLE computer sof tware package APPLEWORKS, and is primarily used for the following purposes. First, it provides an-
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efficient means of identifying the various types of CTHs for grouping purposes, and second, it provides a means of quickly identifying CTHs which require modification.
As an example of the latter, all CTHs with K1/r values greater than 200 can readily be extracted from the data base and identified by selective sorting of CTH height.
To control and centralize any com=ents an'd revisions to Oe p -
classification code, David Fong is assigned custodian of the code, and as-s such, all comments and revisions shall be made through him or his designee.
I TheattachmenttothismemopEesentsindetailthegeometrycodeused i
or CTh classification. The following discussion suncarizes how the geometry code and data base are used. As each CTH drawing is received by SAG-NY from CAD, the hanger's geomet'ry-type and physical di=ensions are classified,
j according to standard geometry nomenclature and dimension ranges specified in the code.
Ihis data is then compiled and entered into the geometry data base.
The present Comanche Peak Unit 2 data base is stored on eleven separate disk files due to floppy disk size limitations.
CTH geometric properties are i
stored on six files (grouped by building location), and CTH drawing key dates 3
are stored on five files (also grouped by building location).
In the near future, we vill attempt to store the entire data base on a single hard disk enabling a more enecmpassing sorting capability.
Data contained in any one file can be manipulated and sorted by any of the following key parameters: CTH identification number, geometry code l
symbol, building room number, elevation, CTH height, width, dead weight and group identifier, cable tray weight, key drawing dates (to CAD, field, SAG or signout), and C1H type (longitudinal, transverse or multi-directional). Data i
can be sorted according to a hierarchy of up to three parameters.
If sorting is requested for CThs within a particular height range, this sorting request counts as two sorting parameters. Sorting capability is especially productive i
when used to group similar CTHs such that a design verification analysis can O
be performed for only the representative envelope CTH within the group. All 4-
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CTHs so grouped are identified in the data base by a group identificatien number.
The design verification documentation for each CTH in the group is cross-referenced to all other CTHs in the group, and identifies the Q.;
representative envelope CTH tor which analysis was performed.'
Attachment cc:
All with Attachment J Padalino E Odar G Trillo C R Wang S
R Locsin s
N Tassoulas Z T Shi H Schoppmann D Fong (5) j G Whritenour l
F Hettinger l
SAG. TUG 2.1191 1
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ATTACEMENT TO SAG.TUC2.1191
,7 CEOMETRY CLASSIFICATION CODE The CPSES Unit 2 geometry data base currently contains approximately
= 10 different types of' cable tray hangers (CTHs'.
Each type is identified by a
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symbol defined in the geomeyry classification code presented in this s
attachment. Each symbol coa.sists of a maximum of six characters _.. Table 1 lists the symbols for the geometry types currently in the data base. CTH.
dimensions are input ir.to;the. data; base to the nearest ' tenth of s\\ foot as given in Table 2.
l' v-The geometry code divides CTHs into seven general cat'egories identified by the symbols below:
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fategory 3 Symbol s
Trapeze Fangs, U
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. Ceiling hhunted or Floor Mounted
. Wall Mattnted L Shaped Hangers L
. Celling Mounted or Floor Mounted
. Ceiling (or Floor) and Wall Mounted O
Beams Supported at Both Ends BEAM Cantilever Beams-'
. CANT
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is Triangle Types IRIA
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Direct Wall Mounted Types WALL p '7 1:
Special Types
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For tra
.te and L-shaped CTHS, ad'ditional characters are provided after U and L so{that,the geometry can be specifically defined, thus enhancing; y
y the usefulness VI the geometry data base. Each of the seven categories are y
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discussed and illustrated below.
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1.
Trapez'e ' Hangers U..q
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W Trapeze hangers are divided into two types, those sdnnected to either the cyiling or floor, and those connected to the wall) These'. types are depoted with a symbol consisting of up to 6 characters, where the first character is alvays U.l Additional characters af ter U are added according $o i thefr* ties below, !n the ordh presented.
Trapezes connected to both ceiling and wall, or floor and walgare classified as special.
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Ceiling-Mounted or Floor-Mounted Trapezes v.
The second character specifies the number of tiers which are loaded with cable trays but do not have any interior inplane bracing mechers attached.
The number of trays per tier is in=aterial.
If there are no such tiers, this nucber is _ omitted.
The next two characters, a T followed by a number, specify the number of tiers which have neither trays nor interior inplane Abracing members attached.
If there are no such tiers, these characters are cmitted.
The next two characters, a B followed by a number, specify the number of tiers without trays which have interior inplane bracing members attached. If there are no such tiers, these characters are omitted.
The next two characters, a Z followed by a number, specify the number of tiers which have both trays and interior inplane bracing.
members attached..If there are'no such tiers, these characters are omitted.
The next characters, either L or BL, denote that the hanger can resist longitudinal loads. The L character signifies 'that the hanger resists longitudinal loads because its' vertical posts are oriented su;h that their strong axis oppcses icngitudinal loads. ~
Q BL signifies that the hanger resists longitudinal loads because it has out-of plane bracing attached.
For both types, heavy duty tray clamps are required.
If the hanger 'cannot resist longit 0dinal loads, these characters are omitted.
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Note that since any hanger-symbol is limited to a maxi =um of six characters, all of the above characters,obviously cannot' be used to describe a very complex hanger geometry.. Generally, all of the above characters are not required to classify a particular hanger geometry.
Ecwever, if more than six characters are required then the T character set shall be ositted. Typical ceiling-counted trapeze hangers are illustrated in Figures l'to 8.
Ib.
Wall-Mounted Trapezes Wall-=ounted trapezes are predocinantly single tier hangers, sece of which are externally braced back to the wall in the plane of the hanger.
Unbraced wall-counted trapeze hangers are denoted by the symbol UW; braced ones are denoted by UBW (see rigures 9 and 10).
l In addition, some vall ounted trapezes are braced with out-of plane cenbers. These are classified as special.
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L Shaped Hangers All L shaped hangers are described by a symbol beginning with the character L followed by a second character equal to. the number of tiers.
If the hanger has only one tier, this second character 1s
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omitted.
For L hangers attached to both ceiling and wall, or floor and wall, the character W follows the first two characters specified above.
For all L hangers,- subsequent characters are used to denote the types of bracing and longitudinal load sustaining capability.
Present, if any. Mangers with inplane bracing are denoted by two characters, a B followed by. the number of inplane bracing members.
Capability to sustain longitudinal loads is denoted by characters L and BL as described in (la) above.
Typical L shaped hangers are illustrated in Figures 11 to'16.
3.
Beam. Cantilever, Triangle and Wall Type Hangers -
Beam, cantilever, triangle and wall' type hangers are simply denoted by the synbols BEAM, CANT, "iRIA and WALL respectively, with no additional 4
characters to distinguish variations of each type. -The treometry data base I
does, how' ver, contain for all hangers a separate entry v:.ich defines the type e
of load resistance and function the hanger provides (L, T, H for longitudinal, s_
transverse and culti-directional, respectively). Figures 17 to 22 illustrate the above type hangers.
4.
Special Eangers Eangers whose geonetry cannot be described by the above code are classified as special hangers denoted by the' symbol SPEC.
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U1T1 U2T1 U3T1 U4T1 U5P2 UBW L2
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' 4 U1B1 U2T3 U391 U4B2-L1W' WALL:
5 U1B2 U2B1 U3P2 U4B3
_L2W CANT 6
U183 i U2B2 U383~
U47151 L3W l
7 ult 151 U2B3
-U3 TIE 1 U47283
'L2FI 8
UlTIB2 U2 TIE 1 U3B1BL U4E1EL L2WBL.
9 ult 2B1 U2T1B2 U3T2 U4P2EL LB 10 U1T2E2 U2T152 U3T1B2 U4T153 11 U1B1PL U27252 U3EL U4B2EL 1
12 U192EL U2T291 U3B2EL I
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U2T2EL U1BL UZEL
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14 Ull 15 U1TIEL U2EIL 16 U1II U2T1L 17 ult 2BL UCL i
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STANDARD FRACTIONS MEASUREMENTS (iNINCHES) 0.0 0
. 8/16" j
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