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SEA SIDE SEA SIDE Spacng bet-pnls lholl bt IIOI lta tllo" 20 he! -
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W:Jroo9 To Boat 8i Baroe Masters T"'-8LE Of' CHANGES 0 STONE WEST BREAl<WATER-N'PROX. 7~75W TO TERMINUS 0 STONE EAST BREAKWATER-APPROX 5+00E 10 TERMINUS 1--
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DIA8LO CANYON SITE GENERAL LAYOUT OF BREAKWATERS PN:IP'IC: GAS AND EU:(:TIIK: ~
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NOTE:
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439,8!)1 B Stone shall not be placed over any of the toes of Tribar slopes in the restoration of West Breakweter.
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Alternate Hexagonal Pattern For Placement of Tr1bars r---
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LOCATION DATA FOR BREAKWATERS-POINT COORDINATES NORTH c-AST DESCRIPTION l-~O~,OO=*"'"~*-+---c"~3,929 30 1,146,642.,,_, _
Rd11rarw;11 l, Wast Breokwo;iter I--~*~ _ __, __._'-'~'°-I~_
1,146,470 50 _
Centi,, 370' RadJu& i:..rve,A* 38*42' 48" 2-HIOOO\\li' 633,74991 --'----"'*~'46=**~0~,~*~*_JC--'-e~c~c~-- __
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1,145,930 )0 Unler, 960'Rodu5 c.un-.A~-30"21' 2r 7 58 6~*~*"----l--~'~'~-'~'~'~"*---1--'~--~46~-~*~"~*:,_,_' ---+-'-'~"~'----~---== _
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1,1,r.,33031 Cenle~450°Rad1US CU~e,(J.* ~*34'09" IO+ 38 I I W 632,982 78 I,l,u:;,936-2 I West 13,eokwo!e, Tennonus O+OOOOE 632,916~4_L_ 1,148,14066 Refe,encet_,East8reokwoter
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D 633,49285 1,147,87'2 11 Cente,-;-585°Rodou, Cur-..,A-24*27'41" 4+99 76 E
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8+15.19E 633,11477 1,147,37758 PRC F
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~147,219 43 Center, P.iQ Rod1u& CCIIVe,(J.* 16" 36' 31" Ea~! 8r<1okwoler Term,nuo {If _!<1b<><il Eo$1 8reokwal* Twm1flll1(lf Doloue) y I
HEXAGONAL ~TTERN FOR APPROXIMATION IN PLACEMENT OF TRIBARS
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D STONE TERMINAL CONE, WEST BREAKWATER OpM -*,O Sol.ft 1111 l:Jc.t.-,-~-~-,
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TERMINAL CONE, EAST BREAKWATER 7
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6' ELEVATION Vol* 6. 4l75d 3
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DEVELOPED VIEW OF SADDLE CHAMFER TRIBAR DIMENSJONS GENERAi. NoTES 9
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SECTION A-A 296 cu. ft.,
d
- 31 71*
508 cu. ft.,
d*4 1 31/2" The parts of West Breakwater that were damaged during the wave storms of January 28, 1981 and November 13, 1981 shall be reconstructed to the same profile surfaces as the original and as-built designs, which are reproduced or elabora~ed with details on this drawing.
All structure and submarine terrain elevations shown on the three drawings of which this 1s the first sheet refer to Mean Lower Low Water Datum. The relationship of Mean Lower Low Water Datum to Sea Level Datum is defined as follows:
Elev. mllw = Elev. ald + 2. 6 1 Elev. sld = Elev. rnllw - 2, 6' Horizontal coordinates on all these drawings are based on California Coordinate System, Zone V.
Conversions of D1ablo Plant Grid coordinates to Zone V coordinates is made as follows:
Nv = 576,067.06 + NPCOS 23* + Ep SIN 23" Ev= l, 161. 806. 12 - Np SIN 23'" + Ep COS 23'"
Ptlew Tr1bars placed 1n the restoration shall be 508 cubic feet size on the seaward slopes an on the terminal cone of West Breakwater Tr1bars on the 1 5 1 sheltered-side slope at West Breakwater shall ne 508 cubic feet size 1n location where pieces that were carried away by waves are to be replaced If needed 1n Jo1n1n_g new Tr111ars to borders of intact Tr1bars, 296 cubic feet pieces may be used selectively to achieve a tight Junction or to fill 1n smaller open areas 2
In a geometrically perfect pattern (lOOo/o Pack) there would be (0. 1997 / d ) Tribars per square foot of area as measured on the plane of the pattern. In the restorat10n a pack of not less than 90 per cent is required, i.e. there shall be not less than 9. 76 Tribars of 508 cubic feet size per I, 000 square feet of true slope area. For the 296 cubic feet Tribars the comparable minimum required density 1s 14 Tribars per l, 000 square feet of true slope area.
The 508 cut11c feet Trtbars shall rest on E Stone, except on the 1 5 1 sheltered-side slope of West Breakwater, where they shal I rest on B Stone E Stone shal I vary 1n sJZe between 25 cuo1c feet for the smallest to 100 cu1J1c feet for the largest in the mixture, with 50 percent llY weight of the pieces ranging aoove and 50 percent ranging below 50 tuo1c feet 1n size.
B Slone, VMy1ng tletween 15 and 60 cubic feet per piece and with 50 percent tly weight ranging eacl1 way from 30 cubic feet, shall be used under the 296 cubic feet Tr1bars and under e1t11er 296 or 508 cubic feet Tr1bars which are placed on the sheltered s1cle of the trunk of West Breakwater, Where only thin overlays of stone are needed to establ 1sh the specif 1ed base surface for pt!ac1ng 508 cubic feet Tr1::iars, B Stone may be used instead of E, subJect to approval 1n each instance by the Constructor
- 7.
Pumped concrete ernbedment shall be placed 20 feet wide (plan dimension) at full thickness at the toe of slope at three locations on West Breakwater and along the full length of the seaward toe of East Breakwater. Straight aligned embedments (ribs} on the end of West Breakwater are all aligned either perpendicular or parallel with the breakwater tangent direction at Station 10 + 38. llW and shall all be 15 feet wide at full thickness. Full thickness 1s achieved when the embedment concrete surface is at the midpoint of height of the embedded Tribars, i.e. nommally
- 4. 3 feet thick where 508 cubic feet Tribars are embedded and 3. 6 feet for the 296 cubic feet Tribars.
The pumped concrete shall be designed for not less than 5,000 psi compressive strength at l8 days and shall be so proportioned as to take and keep very steep slopes when delivered by diver-held and diver-manipulated discharge hose. It is not required that the embedrnent concrete be bonded or keyed into the Tribar concrete. Great care shall be exercised to preserve a concrete-free gap between ribs and through the interstices of the base stone zone on which the Tribars rt:t>t.
The toe embedment described by Section A on drawing number PGE-05-0586 shall extend contin-uously across the high point of the toe between the -30 feet contours of the original bottom on either side.
The two toe embedments shown on Section C-C on the same drawing shall extend across their respective high points between the -40 feet contours of original bottom on either side of the high points.
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Concrete and stone rubble lymg on the 3 : l terminal slope of West Breakwater and in the entrance channel between West and East Breakwaters shall all be removed and disposed of or used as directed or approved by the Constructor.
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PLAN ANO SECTION AT CREST CONSTRUCTION JolNTS
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ENG.
Cii, ENG.
NO.
DATE DESCRIPTION GM/SPEC OWN.
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REVISIONS I
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DATE 5HAPwG OF TRIBAR SURFACE AT TRANSITION WEST BREAKWATER TERMNJS DESCRIPTION GM/SPEC OWN.
CHKO. SUPV.
REVISIONS AP'VO. BY I
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- 9.
Except10nal measures shall be taken to prevent any penetration by fresh concrete into the voids of the B Stone under the crest blocks, The entire length of the West Breakwater's crest shall have the seaward face of the block above elevation+ 16 feet sloped back at 30'" from the vertical, as shown by the detail on this drawing.
IO, FC'I'<',..._,;.~p,,u1vr ro 1~8<? FZECON<::>Tl<!UOTION OF WEST l!>~KW,ATEFZ,;;ee. t;,009~18-I ~
10 PAOFIC GAS ANO ELECTRIC COMPANY RESTORATION OF WEST BREAKWATER a IMPROVEMENTS AT DIABLO CANYON INTAKE BASIN LAYOUT, DETAILS,NOTES SPECIFICATK>N NO 6946 OMAR J. LILLEVANG COISLLTNG ENGINEER 13601 Whltbw etYd OnNn By
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M. P. WADE D<rte N...--
5/14/82 GE-05-0584 UNITS I S. 2 MICROFILM BILL Of MATL
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.c SUPV. BY OJM
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OWN.
CIVIL - PLAN, SECTIONS S. DETAILS DWG LIST BREAKWATERS - RESTORATION S. IMPROVEMENTSl--'s'-"u,___.PS._.,Ds=--------,-o 2
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DIABLO CANYON SUPSD BY OR CONST UCT/ON 6946 NO.
DESCRIPTION W/SPEC OWN.
CHKO. SUPV.
REVISIONS APVD. BY 0.K.
DATE 7-27-s2 t:
SCALES AS SHOWN OFPARTMENT OF ENG!Nl::ERING PACIFIC GAS AND ELECTRIC COMPANY SAN FRANCISCO, CALIFORNIA 5
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