O.* *

, .

BDsTON EoisON COMPANYsoo Bovtstow Steest

BosTDN. MASSACHUSETTS 02199

February 10, 1982

BECo. Ltr. #82-48

.

Mr. Domenic B. Vassallo, ChiefOperating Reactors Branch #2

- Division of LicensingOffice of Nuclear Reactor RegulationU.S. Nuclear Regulatory CommissionWashington, D. C. 20555

License No. DPR-35Docket No. 50-293

Additional Information ConcerningAppendix R Exemption Request

to ir%References: (a) BECo Letter #81-59, dated 3/18/81 , N >y ^ ^f'^-

Mr. A. V. florisi (BECo) to Offir. D. G. Eisenhut (NRC) y

Ei

, l T [ggy ^ /d.-(b) Telecon between J. Keyes and J .T. Venkataraman (BECo) with TK. Eccleston and J. Stang (NRC) y /Con January 6,1982 q. #

Dear Sir:

In accordance with the request for additional information on Item 1(c) ofAttachment B of Reference (a) conveyed to BECo in Reference (b), we submitthe following information on the design that BECo used to encase criticalSafety Division A raceways in switchgear room B.

The encasement was done at two locations: one near the sliding access door~

and the other near the ceiling, 30 feet from the edge of the sliding door.

Enclosed are three photographs of the encasement that is located near the topof the access door to provide you with a description of how this encasementlooks.

'

SK #79-03C.2-09-SK-1 and -2 detail the mounting that was used to box SafetyDivision A conduits. A thickness of ly" of Pyrocrete 102 was applied on theenclosure rear the access door (SK #79-03C.2-09-SK-1), while Albi-Duraspray toa thickness of 1-11/16" was applied on the second enclocure (SK #79-03C.2-09-SK-2).

Product descriptions for both Pyrocrete 102 and Albi-Duraspray are attached tothis report. A 1-11/16" thickness of Albi-Duraspray was used, which is in con-formance with UL Design #X-730. UL Design #X-719 was conformed to in using

00(8202180386 820210 5PDR ADOCK 05000293F PDR [7

e . ,,

COSTON EDCON COMPANY ' *,

Mr. Domenic B. Vassallo, ChiefFebruary 10,1982Page 2

Pyrocrete 102; however, although only 7/8" thickness was required to obtaina 3 hour fire rating, a 1 " thickness was used on the enclosure because itis located above the access door.

Should you require further information on the design details herein submitted,please contact us at your convenience.

Very truly y/ours,

/. ' ltt-c W/

/

W. H. Deacon, Acting ManagerNuclear Operations Suoport Dept.

Attachments :1. SK #79-03C.2-09-SK-1&-22. Technical information on Pyrocrete 1023. Technical infonnation on Albi-Duraspray4. Photographs of the encasement near the sliding access door.

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%j q - J N ? y This Spec Data Sheet conforms

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$ . The Construction Specifications

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[* ,D- 1 5 m% - P sponsible for technical accuracy.

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4) 'g's major petrochemical project utilizing $ "J

B Pyrocrete 102 to protect structural steel @5 % ' Y - ' h"h IQ

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O--considerations must be taken into For uses other than those speci. >

1. PitOIR.C'l, N.OI L, y$account. fically recommended, contact the%j @E

Carboline Technical Service De- oPYROCRETE,8.. PYROCRETE 104 - For in terior partnient

3 ge (Lightwe:ght, fire resistive locations only, ifcquires no ineralmaternal) latin reinforcernent except where Gnnposition and Materials: E mType 102 - Reinforced bond strength isless than required. Pyrocrete formulations are proprie- @ O

" hhgtary mixtures of a quality-controlledI ein orceme t PYROCRETE L/D- A lower ," " n,1 j 3Type L/D - Low Density density formulation for in f erior use hi ust Iw cl, , . only on structural steel, and for use potable water prior to use. 6$

- -._

- . _ . _- -

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APPROVALSBOCA No. RR.73 42 and BOCA No. RR.76 24 and ICBO No. 3051, New York City

jMEA-20 75M and numerous other jurisdictions.

$r, () PYROCRETE 102 PYROCRETE 104 PYROCRETE LjD

(INTERIOR USE ONL'f)COLUMN A$5EMetlESY COLUMN ASSEMBLYu t o m 7is ut o eaavie3| (FOR INTERIOR U$E ONI.,Y) COLUMN CEticg - soca a,,. ,,.

e-4"!" ~J O U.L DESIGN M 724' 1 Hour - istE aiCa C%_. .' __a$ L -) e-4r C+ -.. .. . |

; o-e-r m e_ -1 s.m

i"**s.c c.a

;2.W:, P::: i~.t.- .s. c%-*.* ''' i 2.W1, ' ";.:' - c ..-- a-~ ""*-''~-'=1r2 to. I1 Jes I 3/4 m s.

FLOOR! CEILING / BEAM AS$EMBLY' 3,'* '"'[G 'uCod Appro..d B. d o De.egn D 7171 tre he t3 as=6 1 t/2.h.ise. SE AM DE SIGN t, w v ~. ee '3 h w. SOCA DE 5tGN 2 h . ".w,. . , g g , ,,,, t 1/2 s- is as=3 en

Q Py, . fe. 2.* - r -' -*- @ oscaa v *

o.ae n.,T s x tas wi m. .nae e c kO g |

*ue ,.L o.f sicQ @ 3 e n a.s n

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t4e uoom in e rvaocasts io.i, ,4stu s g; q tce s uca ten . ... .. cen n, ea ews

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9/16 (14s.) he.. u., g W II2 Pc m. 2.ae a* . ... n asess

n/7 o 3,. 2.n S"'*""*JT**"* 'O-'"'' 'a* ***= a e = "ofis o 4,.i.,

I|' .Physical Characteristics: All al is required to cover edges and mended by the Carboline Technical

Pyrocrete formulations provide hard, faces of exposed flanges prior to in. Service Department for theintendednon. dusting fireproofing which is stalling Pyrocrete on some designs use.odoricss, non. flammable, and com- as shown. Application on large, flatplies with requirements of the U.S. areas requires the use of reinforcing 5. INSTALIATION.Environmental Protection Agency. lath overall. On columns or beams, Surface Preparation: Remove

web sizes over 12 inches (30 cm) all oil, grease' loose dirt, paint and. threquireanchwedninfacement con- other surface contaminants. Primeter u ,de go he. al hyd. sistmg of pieces or stnps of lath in- and install reinforcing or tie coat',,

**foodr as requir d, for the selected design.* "

i c ling wate rel ar ic, o

greater volume than from any other installation of expanded metal lath ..m . u-! calemmg matenal, at more effective nailed to the sea ed surface prior to I - M f,'FIlW fire servue temperatures. applying Pyrocrete. [-c. ,Pyrocrete contains no toxic or

Primer: Use Carbo Zinc @ plus k'~- AI th Ang les Re , San Polyclade 935 Tie Coat, Pyroprime _ ~ ~ 8 %

f*'

V 772 or Pyroprime/ Tie-Cote 7 ~ "3clean struc,tural steel on exten,74 on

-

,

_m k"#"NFrancisco Bay Area Regulation 3 or lo- - cand Philadelphia Rule 5 Air Pollu-tion Regulations. cations or m humid areas. Pruner is t y 1 -

not generally required on columns _qTen pcrature Resistance: Py- or beams when used on interior ap- ' ''

| rocrete is designed for application in plications. Where primers are de- Spray application of Pyrocrete 102 over'

accordance with fire tests run under sired for interior applications, any urethane foam on an exterior tank sur-' ' ' ' -ASTM E 119 and ASTM E 84 of the above primers are suitable.

standards. Chemical reactions occur Exceptions are noted in the Appli-| at temperaturas from 250'F (121'C) cation Instructions. Methods: Work should be done

through 575'F (200*C). Application only under supervision of an apph-may be made safely at temperatures Over galvam. zed surfaces always cator who has attended the manu-ranging from 95'F (35'C) to 35'F apply Pyroprep 773. Over urethane facturer's factory training program.

| (+2*C). In interior or sheltered lo- f am surfaces always apply Pyro- Installation shall be m accordancecations, installation at temperatures prime / Tie. Cote 774 or Pyroprime/ with manufacturer's most recentlyas low as 20*F (-7'C) is possible Tie-Cote 775 WB. Over polystyrene dated application instructions.

,

when warmed water is used for foam, w fu extwior applications, use Installation may be made by trowel| mixing. Laboratory testing exposing only Pyroprime/ Tie-Cote 775 WB. or spray. Where specified, finish by

Pyrocrete to cryogenic conditions trowelling or rolhng with aof -250*F (-157'C) resulted in no Topcoat: On exten.or applica- nap paint roller, brushing w,short8 ith aphysical change. tions, or to provide colored finishes, damp paint brush, striking with a

or for protection against chemical trowel, darby or squeegee, wipingj ,Surfaces: Pyrocrete may be ap- fumes or high humidity exposures, with a plastic strip, or similar me-

'%

j plied directly to structural steel use Pyrocote 787, Pyrocote Elasto- chanical techniques to obtain themembers. Reinforcing expanded met- mer 788, or other topcoats recom- finish texture which is desired.

V

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PHYSICAL PROPERTIES:i

'> Dry Density in Ibs./ft.:(gm/cc)

average 6070(1.01.1) 60-70(1.0-1.1) 35-40(.55.65)Ha rdness (Shore "D")- Ultimate 65 70 65 70 40 45

| Compressive Strength in psi(Kg/cm2)-average 2000(140) 2000(140) 760(53.2)'I Coefficientof thermalexpansionin inc h/inc h/'F (cm/cm/'C)- avera ge 3.9 x 10 8(7 x 104) 3.9 x 10-6(7 x 104) -

| Impact Resistance in foot-pounds(KgM)- Typical 20(2.8) 20(2.8) 20(2.8)I Average Flexural Strength inpsi (Ig/cm2) 1000(70) 1000(70) 500(38.5).| Maximum Strain (inches / inch orcm/cm) .0028 .0028 .0015

'

Insulation "_K Factor"in BTU inches /'

ho ur.ft. 2 .F at 7'| (cal /cm/sec cm2.5'FC) 9.6(.0033) 9.6(.0033) 6.1(.0021)I ASTM E 84 RESULTS

Flamespread 5 5 -'

Smoke development 0 0 -i Fuelcontributed 0 0 -|

|3 - 4 mw. .

I.

6. Av.ul.Alui.iTV AND cost \) / ' *%.. q'f|ag;,p p . , um,, y.,*I . iresilts hility: Available from ma n- V .' f !.k Iufacturing facilities in St. Louis, y \- N.; .*

[ ':R. 8.MX ' 9. .g;;Wi;Q .t,* {'

Missouri or Iola, Kansas. Allow ten ' \ b '8 .days for shipment after receipt of I.5 i . ,' MCMG.. E.- 4

3 ,A)'

order. 5,: I V. - ' N6--[m c.L,.a NP. .1,

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pr .% v % .Costs: Prices depend on quantity .k,y , kNh[3N[N7k ..

gordered. Approximate material costs c;4h

i % ("% M y ''@?"p,,C,N*

for M inch (6.4mm) thick material "b bY @T &

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'"1.[ M M@ASD M E (irange from 256 to 454 per square /F k j?,k" $'' '' Qrjh

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- Ifoot ($2.70-$4.85 per square meter). O.

? T;Costs of waste, lath, installation d M y y e h ak1*<

labor, scaffolding, freight, primer, f 1 [),t.,,[ "'kM $'Q -topcoat, etc., must also be con- 'V b -,j g Nr.7 7 ., u y,[3

'

sidered. [.[,,-

,,

), $g t. f'''ih k k g4 ,N :[ $ 'v UfNS4M g. NOTE: Theoretical wet coverage. N@'per 100 lb. (46 kg) kit at M' (6.4mm) yIs ,,Q;A % V "% 9[ #.a u lu'X * h' ^ C 2.33 ['G O{? ' M M~ O Ithickness is: - -,

Pyrocrete 102 96 square feet. Spray application of Pyrocrete 102 to metal tath.orPyrocrete 104 (8.9 square meters)

|Pyrocrete L < D 160 square feet Q j'

'

~ gp ; . , , { 4-(14.9 square meters) . ;,y;' ,j.,W j.}'

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T. GUAltASTl:E ,&y. . n(< ' /M(:M %t .

n''a Q' d xCarboline warranties Pyrocrete q,e ' b2- ec.formulations to be of the quality i. / ' . - 7 c:A

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Q[4Q /Wh is[' ?r |- {*tested by Underwriters * Labora- T,s ' S $$. gtories and/or Factory Mutual Re- #. +0 ' ' Mr -

E M"

Ssearch Corporaticn. No other war- [ _] ; y

'

ranties are offered or implied. p[ bhs |11. MAINTENANCF ' * -[ "+ *

{d Applications normally require no N,'t. p . 4.--, sT

gr.hfM ~'

maintenance. Patching, if necessary, {g : . 4D%Tcan be easily accomplished with "'kits available from the manufac- . f . L3 h C~

.

turer. Consult Carboline's Tech-h.f

e-. B fi_ O " ' ~ '1N '2 y"- d'p

.

-

nical Service Department for de- gb - = b2 4 *tailed instructions. Topcoats, where " 'required, shall be renewed as often

Trowelled installation of Pyrocrete 102 to columns- -

as needed to protect integrity of and bracing of a major petrochemical project.coating.

9. TECIINlrA I.SEltVICES !lCarboline ofrers both laboratory

and job site consulting services tocover any technical or mechanicalrequirement involving service, in-stallation or effectiveness of thefireproofing material. Code guid-ance and fire protection consulta.

-

C aPb 0]lin 3tion is also available without cost. ,Field service is available on request.

10. FII.ING SYSTEMS 350 Hanley Industrial Courtst. Louis. Mo. 63144

Product Data Sheet 314 644 1000 ISpec-Data 3 IISweet's Architectural FileSweet's Industrial Construction

FilePSAE Masterspec

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ALBI-DURASPRAY SUGGESTED SPECIFICATIONS,

(d . FOR FIRE PROTECTION OF STRUCTURAL STEELo- RECOMMENDED FOR INSERTION AS SEPARATE FIREPROOFING SECTION'

1.00 SCOPE ing Steel Structures Painting Council Sur. Contractor will be required to apply anotherface Preparation Specifications: coat.4.09 The Fireproofinq Contractor shall fur-Provide alllabor, materials and equipment Solvent Cleaning SSPC SP-1

required for complete installation of all nish and maintain in place adequate coversHand Cleaning SSPC-SP 2 and dropcioths to protect the work of otherfireproofing and related work as shown on Power Tool Cleaning SSPC-SP-3the drawings or specified herein and in ac- trades and adjacent surfaces from splatter.cordance with all applicable requirements 3.02 All surf aces to be fireproofed shalf be Any spots or spillages which occur shall beof the contract documents. This specifica. thoroughly cleaned of oil, grease, mill promptly removed.

scale, flaking paint and other foreign mat- 4.10 Copper, aluminum and stainless steeltion shall be supplemented by the ap-plicable requirements or approvals of ter. Surfaces shall be free of moisture and surfaces focated in the vicinity of spray

contamination f rom chemicals andowner, Building Codes or insurance rating area and subject to contamination bysolvents.organization having jurisdiction. verspray fr m firepr finq application

1.01 This specification covers the surf ace 3.03 Shop primed surf aces shall be ex- shall be identified and masked or otherwisepreparation, materials and application of amined and spot primed by the Fireproofing protected by fireproofing contractor.materials for fireproofing of structural steel Contractor *S required. A full coat of primar #' *with Albi Duraspray. is required a alllocations.Where surfaces protected with " Wet Paint" signs.1.02 This specification covers fire resis- have not been shop primed, Fireproofing 4.12 All chps, hangers, etc., as coveredtance ratings ranging from one hout to four Contractor shall prime before faseproofing. under other sections of the specificationsho' rs on steel columns and beams based .4 ny a ditional surface preparation shall be placed by others prior to the ap-on tests conducted by Underwriters, specM W W Nepoofing manufacturer plication of fireproofing material. However,Laboratories, Inc. shall be considered a part of th.is specifica- all ducts, piping, etc., that would interfere

with Continuous fireproofing applicationsRatings cre based on fire tests con- tion.ducted in accordance with the standard 3.05 The Fireproofing Contractor shall im. are to be placed af ter the fireproofingmethods of fire tests of building construc- mediately notify the Purchaser in writing of materials have been instaffed.

4.13 All patching and repair of sprayedtion matenals,(ASTM E 119) any surface that cannot be put in proper1.03 The specific requirements for each condition for fireproofing as specified here. fireproofing due to cutting or chipping bym

[#) surf ace to be fireproofed shall be as shown in or assume responsibility for and rectify other trades shall be performed under thissection and paid for by the trade that per-k on the drawings or fireproofing schedule. any unsatisfactory finish which results.formed the cutting.

2.00 M ATERI ALS 4.00 APPLICATION 5.00 SAMPLE APPLICATION

4.01 The fireproofing manuf acturers' 5.01 Before proceeding with the work, the2 01 Materials shall be ef the type specifiedprinted 6nstructions covering application applicator shall apply fireproofing material

2.02 All materials shall be delivered to the methods shall be strictly followed and con- to a surf ace area of approximately 100sidered a part of this specification. square feet which shall be subject to ap-job site in manuf acturers' sealed con-

tainers. Each container shall be labeled by * ** *the manufacturer with the manuf acturer's sudaus m M ny weah M N texMe and Mness M WsW whname, type ar 'tch number, ambient temperature is below 35' F. 6.00 QUALIFICATION OF FIREPROOFING2.03 Fireproc j rireproofing material etal lath, where re- CONTRACTOR9"shall be Albi C 1 tay, a magnesium oxy. quired, shall be installed as shown and 6.01 Work shall bs executed by a qualifiedchloride,as manuactured by Albi Manufac- detailed in Underwriters * Laboratories Fire Albi Applicator having received properturing Division of StanChem, Inc., East Test Report. training by the Manufacturer prior to time ofBerlin, Conn. Albi Duraspray shall be deliv- 4.04 Fireproofing material shall be applied bid. Proper evidence of such qualificationsered to the job site in factory sealed con. so that dry density of cured material is 30 shall be submitted at the time of bid.tainers with labels verifying compfiance PCF Material shall be installed in strict accor-with UL quality control inspection pro- 4.05 Surf ace texture of fireproofing shall dance with manufacturers' recommenda-gram. All materials shall be kept dry and be as spay apphed tions.covered until ready for use. Broken con- The @alih of wWanship @aH be

7.00 GUARANTEEtainers or material that has been exposed the best available. Finished work shall be7.01 Manuf acturer shall warrant material toto water before actual use shall be dis- unif orm, without noticeable icicles and sag-conform to specifications and be free of

ging. Edges of fireproofing adjoining other2.04 Primers: inorganic zine or modified materials or colors shall be sharp and clear manufacturing defects for a period of onealkyds.

4.0 At co et n finish shall be touched. 70 Applicator shall guarantee that the in-stallation of material conforms to manufac-tallath wh e re ui ed by f r e up, restored and lef t in good condition, turers' recommendations and good con-raung. where damaged.

e actual MMss Wained may be muc h p a N s, and shau W erE' 3.00 SURFACE PREPARATION checked by the Field Engineer. lf it is found guarantee its workmanship connected with> 3.01 Surf ace preparation shall be in aCCor- that the finished surfaces are not the the installation for a period of one year from/

dance with the latest edition of the follow- recommended thickness, the Fireproofing date of instaHation.

4

' 7.14/ALe

OP.OVERALL PRODUCT IN PLACE'

s ALBI-DUPASPRAYo \. M FOR INTERIOR FIRE PROTECTION OF STRUCTURAL STEEL

WHERE ABRASION RESISTANCE, DURABluTY AND ECONOMY COUNT THE MOST!-

PRODUCT DESCRIPTION * Excellent light reflectance characteristics achieve a smoother finish.' Direct spray application to steel without

Albs Duraspray is a specially formulated, the necessity of attachments or metallath FULLY TESTEDlightweight, aerated, magnesium oxychlor- reinforcement-reducing cost and

Tested at Underwriters Laboratories in ac-ide fireproofing material, it is spray-applied eliminating additional tradescordance with ASTM test method E 119.

directly to steel, concrete and other sur- . Highly resistant to dusting, flaking andfaces requiring fire and thermal barrier pro. spalling COLORS AND TEXTURES

* Approved by USDA for use in food pro- Albi Duraspray comes in a natural off whiteAlbi Duraspray is asbestos-free and com-cessing industnes finish. For specific color, use a top coat of aplies with Environmental Protection

*Can take intermittent rain or indirect compatible paint.Regulation 40 CFR, Chapter 1, subsection61.22E. weather exposure without adverse effect

m dW W uWHY SPECIFY ALBI DURASPRAY C4 dQgr y Shipped to site in 3-component factory

& sealed, water repellant containers.Albi Duraspray offers excellent cost advan - '

LIMITATIONStages wherever fireproofing material will be , ,_

,

Do not use on substrates or in areas sub-subjected to human traffic, mechanical ~ h :1 A jf '~Eg/pGQ/"abuse, vibration or high air velocHy im- , " f + t' hy. * ject to continuous temperatures in excess

#pingement. of 212 *F. (100*C.) Do not apply when eitherI substrate or ambient temperatures are

'UL listed for up to 4 hour protection of g below 35'F. (2 *C.). ,structural steel iN5 - ' F T7 M

* Accepted or approved by major building h-%gAW - Q .x~k1- V USES AND APPLICATIONSf

,

code and bsurance rating organizations " "**"?D * ? Albi Duraspray offers the advantages of'

m *More durable and abrasion resistant > -Q f long erm rayy and resistance to ex%''! ) finish than conventional soft, friable ,, [ - 2 :- nal damage and is ideally suited for use as

.

( fireproof coatings b A s uctural sMel po M on wWe sW,/ . i members will be subject to human traffic or;4 '{. ,g , ,c, 8+%g ' kN . high velocity air impingement. Consider* Light in weight (30 lbsicu f t.) due to

! patented aeration process. High strength Albi Duraspray to Structural Steet Albi Duraspray for fire protection of struc-|

to weight ratiEASY TO APPLY tural steel in elevator shaf ts, equipment*Can be trowelled or rolled to smootn, even rooms, power plants, light manufacturing

finish or sprayed to attractive pebble- Albi Duraspray is spray applied (for stucco- facilities, light duty warehouses, hospitalstexture finish like texture) in one pass or trowelled to and interstitial space designs.

| TYPICAL SYSTEM HOURLY RATING THICKNESS AUTHORITY CONSTRUCTIONDirect Contour Application 1 hr. S!8" ULI Design #X-708 Column

1 1/2 hr. 7/8" ULl Design #X 708 Column( g gg g 2 hr. 1-3/16" ULI Design #X-708 Column| r

-

3 hr. 1 11/16" ULI Design #X 708 Column; ;;;| 4 hr. 2-3/16" ULI Design #X 708 Column;; 1 hr. 1/2" ULI Design #N 711 Beam'

(j 1 1/2 hr. 3/4" ULI Design #N 711 Beam7 2 hr. 1" ULI Design #N 711 Beam

3 hr. 11/2" Ull Design #N-712' Beam *

Boxed Metal Lath 1 hr. 5/8" ULI Design #X 730" Column"Application 1 1/2 hr. 7/8" ult Design #X-730 Column

2 hr. 1 3/16" Ulf Desian #X 730 Column=b~ C3 h1 1 11/16" ULI Desion #X 730T Column4 hr. 2 3/16" ULI Design #X-730 Column1 hr. 1/2" ult Design #N 713" Beam'11/2 hr. 3/4" ULI Design #N 713 Beam

i 2 hr. 1" llii Desinn #N 7M Beam"- C 3 hr. | 1 1/2'' | ULl Design #N 713 Beam

'' Metal fath required on lower flange

" Metal lath required

3

A'~ ~T AC H M E N ~T #4C .

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THE ENC.ASE MENT de| .t ;p , . m .

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