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Home My WebLink About2421-7I id F _, DI F TO INSIDE OPTIONAL OUTSIDE B i1' 8 1/2" 16' 15' EDGES TO BE 2 EDGE OF CONCRETE (SHAFT NOT SHOWN) 42' 7 1/2" ROUNDED 13 1/4' ^� EDGES TO BE B, a I TO 3' R 102' 1 _ 3' OC SEE NOTE 8 _ , lk'P r- ROUNDED •3 TIE BAR MANHOLE FRAME R=ID OF SPUR C +C 4-•6, E BARS A 63" 10' r`• TO 3" R GRADE STD. PLAN 630 3'-3* LONG. 69'10 3/4' 144' L_ -I 4-•4 H BARS SEE NOTE 2 24" C ` fV + C D B� RS D BARS LE SHAFT . 5•x2' PIPE PERMANHSOTD. 03 TIE BAR II. THE FOLLOWING CRITERIA SHALL BE USED FOR THIS MANHOLE: A� _ I 4. BEDDING B SHALL BE COMPOSED Of SAND OR OTHER GRANULAR E BARS W MATERIAL AND SHALL HAVE A SAND EQUIVALENT VALUE NOT LESS OT S NO BI " I \-3-o4 DETAIL 4��A y I J BARS 4'-8' NG 3' OC CON' T (RINGS AND COVER NOT SHOWN) DIMENSION. NESTING OF ROCKS WILL NOT BE PERMITTED. STEPS - _ A. MAIN LINE = 33• INSIDE DIAMETER OR LESS. (EXCEPTION - IF THE SEE NOTE 4 y R I D - SECTION I. WHEN DEPTH M FROM STREET GRADE TO THE TOP OF THE BOX IS LESS MAIN LINE RCP DOWNSTREAM OF THE MANHOLE IS 36" TO 42" INSIDE of SPUR * _ E TO 3'R INLET THAN 2'-10 1/2" FOR PAVED STREETS OR Y-6" FOR UNPAVED STREETS, RINGS DIAMETER AND THE MAIN LINE RCP UPSTREAM IS 33" OR LESS.).Z •4018' OC �� BOTH WAYS, T-r� ELEVATION H APPLIES AT PLAN 324 CONSTRUCT SHAFT PER SECTION C -C AND DETAIL "N". DEPTH M MAY BE 5'x 1' RING SEAT STANDARD PLAN 320 OR STANDARD PLAN 322 IS NOT APPLICABLE - � _ --- 60' OR OVER STEP IN REDUCED TO AN ABSOLUTE LIMIT OF 6" WHEN LARGER VALUES OF M SECTION A -A WHERE THE MAIN LINE CONDUIT IS LESS 36" IN DIAMETER. � � ALL STEEL REINF. E BARS WOULD REDUCE H IN SECTION C -C TO 3'-6" OR LESS. H BARS .THAN •4 a 4. OC 1 •3 OR •4 6' B. SEE SECTION A - A. THE MAXIMUM SIZE LATERAL THAT MAY BE f-- 16' FOR PAVED DETAIL "N" PLAN F J BARS 2. H (IN SECTION A -A AND B -B) SHALL NOT BE LESS THAN 4'-0', BUT MAY CONNECTED TO THIS MANHOLE IS SUCH THAT THE DISTANCE FROM B - (RINGS AND COVER NOT SHOWN) ROUND DZ F D F BE INCREASED PROVIDED THAT THE VALUE OF M SHALL NOT BE LESS EDGES THE OUTSIDE (TOP) OF THE LATERAL TO THE BOTTOM OF THE 8" PLAN _ TO 3"R THAN THE MINIMUM SPECIFIED AND THAT THE REDUCER SHALL BE USED. THICK TOP OF THE MANHOLE CHAMBER, MEASURED VERTICALLY FROM SEE NOTE I FOR H (IN SECTION C -C) SEE NOTE I. THE END OF THE RCP, SHALL BE A MINMUM OF 60. (SHAFT NOT SHOWN) 3. L SHALL BE 4'-0" UNLESS OTHERWISE SHOWN. L MAY BE INCREASED OR C. IF THE SIZE OF THE LATERAL IS SUCH THAT THE ABOVE-SPECIFIED STREET GRADE MANHOLE FRAME STREET GRADE LOCATION OF MANHOLE SHIFTED TO MEET PIPE ENDS, BUT ANY CHANGEAND MINIMUM DISTANCES CANNOT BE MAINTAINED. THEN ONE OF THE COVER PER CONCRETE RINGS IN LOCATION OF THE SPUR MUST BE APPROVED BY THE ENGINEER. FOLLOWING ALTERNATE SOLUTIONS MUST BE USED. STD. PLAN 630 PER STD. PLAN 324 5'xl' RING FSEAT 4. T SHALL BE 8" FOR VALUES OF H UP TO AND INCLUDING 8' -0" AND 10" FOR I. PROVIDE A SPECIAL STRUCTURE. 24' `° OMIT THIS STEP IN PAVED STREETS wm VALUES OF H OVER 8'-0" �� MANHOLE 24• cna 5. STATIONS OF MANHOLES SHOWN ON PROJECT DRAWINGS APPLY AT 2. PROVIDE TWO STANDARD STRUCTURES CONSISTING OF THIS w+ w SHAFT PER STD. 16' FOR PAVED STREETS. 2'-2' jD ~ 9' L?' CENTER LINE OF SHAFT. ELEVATIONS ARE SHOWN AT CENTER LINE OF MANHOLE PLACED UPSTREAM OR DOWNSTREAM FROM THE APPLICABLE PLAN 324 FOR UNPAVED T 3'-6' T w SHAFT AND REFER TO THE PROLONGED INVERT GRADE LINES. SEE NOTE 3. TRTRE OR TRANSITION STRCTRE JUNCTION STRUCTURE fin '-o' STREETS ,,: Q o w 7- _z 6. REINFORCEMENT SHALL CONFORM TO ASTM A 615. GRADE 40, AND SHALL 12. MANHOLE FRAME AND COVER SHALL CONFORM TO STANDARD PLAN 630 9 r S'x2' PIPE SEAT > W TERMINATE 1 1/2" CLEAR OF CONCRETE SURFACES UNLESS OTHERWISE UNLESS OTHERWISE SHOWN. - T 3 -6 ROUND EDGES OF INLETS I/2 a v``'i SHOWN. 13. MANHOLE SHAFT SHALL CONFORM TO STANDARD PLAN 324 UNLESS c__ 2 ROUND EDGES ;p 7. FLOOR OF MANHOLE SHALL BE STEEL TROWELED TO SPRING LINE. OTHERWISE SHOWN. 1/2' S. BODY OF MANHOLE SHALL BE POURED IN ONE CONTINUOUS OPERATION 14• WHERE A MANHOLE SHAFT - 36 -INCH WITHOUT REDUCER IS SPECIFIED INLET ELEVATION APPLIES AT THIS SECTION C -C EXCEPT THAT A CONSTRUCTION JOINT WITH A LONGITUDINAL KEYWAY REFER TO STANDARD PLAN 336. POINT MAY BE PLACED AT SPRING LINE.= _' - - IS. WHERE A PRESSURE MANHOLE SHAFT - WITH ECCENTRIC REDUCER IS SECTION A -A 9. THICKNESS OF THE DECK SHALL VARY WHEN NECESSARY TO PROVIDE SPECIFIED REFER TO STANDARD PLAN 328. A LEVEL SEAT BUT SHALL NOT BE LESS THAN 8" 16. WHERE A PRESSURE MANHOLE SHAFT - 36 -INCH WITHOUT REDUCER IS STATION LINE ` 10. STEPS SHALL CONFORM TO STANDARD PLAN 635 OR 636. UNLESS OTHERWISE SPECIFIED REFER TO STANDARD PLAN 329. 3•rO. r SHOWN, STEPS SHALL BE UNIFORMLY SPACED 14" TO 15" OC. THE LOWEST THE FOLLOWING STANDARD PLANS ARE INCORPORATED HEREIN Col ""� 18. STEPS STEP SHALL NOT BE MORE THAN 24' ABOVE THE LEDGE AT THE SIDE OF T T THE MANHOLE.324 MANHOLE SHAFT - WITH ECCENTRIC REDUCER 3.R A LE o VALUES FOR M (SEE 1) PAVED STREET UNPAVED STREET 326 MANHOLE SHAFT - 36 -INCH WITHOUT REDUCER I I =N SECTION MAX. MIN. MAX. MIN. ` 328 PRESSURE MANHOLE SHAFT - WITH ECCENTRIC A -A_ ( 2'-10 1/2' 3•-6' 329 PRESSURE MANHOLE SHAFT - 36 -INCH WITHOUT REDUCER ( 4- L*2T-8' c=c 4 It• a I/2• I 15• * 630 24 -INCH MANHOLE FRAME AND COVER 633 36 -INCH MANHOLE FRAME AND COVER °D 635 STEEL STEP _ °D 636 POLYPROPYLENE PLASTIC STEP OPTIONAL BOTTOM GRADE POINTS. SEE NOTE 5 SECTION B -B F _, DI F TO INSIDE OPTIONAL OUTSIDE ' C -C i1' 8 1/2" 16' 15' EDGES TO BE 2 EDGE OF CONCRETE (SHAFT NOT SHOWN) 42' 7 1/2" ROUNDED 13 1/4' 45' 7 3/4" D BARS B, a I TO 3' R 102' 1 _ 3' OC SEE NOTE 8 _ , lk'P r- AND THE METHOD OF USE TO BE APPROVED BY THE ENGINEER. •3 TIE BAR MANHOLE FRAME R=ID OF SPUR C +C 4-•6, E BARS A 63" 10' 132 17 1/2' GRADE STD. PLAN 630 3'-3* LONG. 69'10 3/4' 144' L_ -I 4-•4 H BARS SEE NOTE 2 24" , D B� RS D BARS LE SHAFT . 5•x2' PIPE PERMANHSOTD. 03 TIE BAR 4, _0 3'-0" LONG 3. OC. f-! 4. BEDDING B SHALL BE COMPOSED Of SAND OR OTHER GRANULAR E BARS W MATERIAL AND SHALL HAVE A SAND EQUIVALENT VALUE NOT LESS SEE NOTE 9 BI " I \-3-o4 DETAIL "N« PLETED PRIOR TO PLACING THE BALANCE OF THE BACKFILL. THE J BARS 4'-8' NG 3' OC CON' T (RINGS AND COVER NOT SHOWN) F D2F OADD'L. BARS 6' OC ISLE NOTE I) TO INSIDE EDGE OF ' C -C i1' 8 1/2" 16' 15' PLAN MANHOLE, SEE NOTE 2 84' (SHAFT NOT SHOWN) 42' 7 1/2" al 13 1/4' 45' 7 3/4" 96' 1 21 PIPE SEAT LEVEL, 102' 1 15 1/2' al SEE NOTE 8 16' 54' 9-114' AND THE METHOD OF USE TO BE APPROVED BY THE ENGINEER. 16 1/2- MANHOLE FRAME 120' 1 '` E BARS STREET AND COVER PER 63" 10' 132 17 1/2' GRADE STD. PLAN 630 138' 17 I/2' 69'10 3/4' 144' 18- 72* 1 II' 3'1 R 24" 7. CONCRETE BACKFILL SHALL BE PROVIDED FOR RCP i8. 1N DIAMETER D B� RS I LE SHAFT . 5•x2' PIPE PERMANHSOTD. THE COVER IS LESS THAN 15' AND FOR RCP 39' OR GREATER WHERE y 1 '-4''2'-4' I P o �' PLAN 324 SEAT ►- 1/2' CRUSHED ROCK SHALL BE USED. I I 4. BEDDING B SHALL BE COMPOSED Of SAND OR OTHER GRANULAR E BARS W MATERIAL AND SHALL HAVE A SAND EQUIVALENT VALUE NOT LESS THAN 20 AS SPECIFIED IN SUBSECTION 306-1.2.1 AS AMENDED UN- TIE BARS LESS OTHERWISE APPROVED BY THE ENGINEER AND SHALL BE COM- PLETED PRIOR TO PLACING THE BALANCE OF THE BACKFILL. THE MAXIMUM ROCK SIZE FOR BEDDING B SHALL BE 4' IN THE GREATEST GRADE POINTS. DIMENSION. NESTING OF ROCKS WILL NOT BE PERMITTED. STEPS - SEE NOTE 4 TIE BAR 5 E SECTION 13-1313-13ROUND F ` F J BARS EDGES SPRING LINE TO 3'R INLET CONCRETE RINGS STREET GRADE •4018' OC PER STD. BOTH WAYS, T-r� ELEVATION H APPLIES AT PLAN 324 5'x 1' RING SEAT TO USED WHEN D2 E THIS POINT OMIT THIS H BARS 60' OR OVER STEP IN z SEE TABLE SECTION A -A PAVED STREETS =- VARIABLE E BARS H BARS 1 24• •3 OR •4 6' TIE BARS 16' FOR PAVED F F J BARS STREETS. 2'-2" FOR UNPAVED STREETS ROUND DZ F D F EDGES 78' II 3/4' _ TO 3"R TABLE OF VALUES FOR F PAVED STREET 1UNPAVED STREET MAX. i MIN. MAX. MIN. ----_� A -A 2-_ X0_1 / 3'-6* ' C -C i1' 8 1/2" 16' 15' DIAMETER. AND 12' FOR PIPE LARGER THAN 108' IN DIAMETER. 39' 1 7' 84' 12 1/2' 42' 7 1/2" 90' 13 1/4' 45' 7 3/4" 96' 1 14" 48" 8' 102' 1 15 1/2' 5i- 8 1/2' 108' 16' 54' 9-114' AND THE METHOD OF USE TO BE APPROVED BY THE ENGINEER. 16 1/2- 57- 9 1/4' 120' 1 17' 60" j 9 1/2' 126' 17" 63" 10' 132 17 1/2' 66' 1 10 1/4" 138' 17 I/2' 69'10 3/4' 144' 18- 72* 1 II' AND SHALL HAVE A SAND EOUIVALENT VALUE OF NOT LESS THAN 20 SECTION C -C TABLE OF VALUES FOR M (SEE NOTE 1) SECTION PAVED STREET 1UNPAVED STREET MAX. i MIN. MAX. MIN. ----_� A -A 2-_ X0_1 / 3'-6* ' C -C i1' 8 1/2" 16' 15' AMERICAN PUBLIC WORKS ASSOCIATION - SOUTHERN CALIFORNIA CHAPTER PROMULGATED BY THE APWA-AGC JOINT COOPERATIVE COMMITTEE MANHOLE PIPE TO PIPE AIN LINE ID = 36" OR LARGER) STANDARD PLAN 320-01 992 6' FOR USE WITH STANDARD SPECIFICATIONS FOR PUBLIC WORKS CONSTRUCTION NOTES I. WHEN DEPTH M FROM STREET GRADE TO THE TOP OF THE BOX IS LESS THAN 2'-10 1/2' FOR PAVED STREETS OR 3'-6' FOR UNPAVED STREETS, CONSTRUCT MONOLITHIC SHAFT PER SECTION C -C AND DETAIL 'N". SHAFT FOR ANY DEPTH OF MANHOLE MAY BE CONSTRUCTED PER SECTION C -C. WHEN DIAMETER DI IS 48" OR LESS. CENTER OF SHAFT MAY BE LOCATED PER NOTE 2. 2. CENTER OF MANHOLE SHAFT SHALL BE LOCATED OVER CENTER LINE OF STORM DRAIN WHEN DIAMETER DI IS 48' OR LESS, IN WHICH CASE PLACE E BARS SYMMETRICALLY AROUND SHAFT AT 450 WITH CENTER LINE AND OMIT J BARS. 3. L AND P SHALL HAVE THE FOLLOWING VALUES UNLESS OTHERWISE SHOWN ON THE PROJECT DRAWINGS: A. D2296" OR LESS, L= 5' -6". P=5* B. D2 OVER 960, L= 6' -0", P=80 L MAY BE INCREASED OR LOCATION OF MANHOLE SHIFTED TO MEET PIPE ENDS. WHEN L GREATER THAN THAT SHOWN ABOVE IS SPECIFIED, D BARS SHALL BE CONTINUED 600C. 4. STATIONS OF MANHOLES SHOWN ON PROJECT DRAWINGS APPLY AT CENTER LINE OF SHAFT. ELEVATIONS ARE SHOWN AT CENTER LINE OF SHAFT AND, REFER TO THE PROLONGED INVERT GRADE LINES. S. REINFORCEMENT SHALL CONFORM TO ASTM A 615, GRADE 40, AND SHALL TERMINATE 1 1/2' CLEAR OF CONCRETE SURFACES UNLESS OTHERWISE SHOWN. 6. FLOOR OF MANHOLE SHALL BE STEEL TROWELED TO SPRING LINE. 7. BODY OF MANHOLE SHALL B£ POURED IN ONE CONTINUOUS OPERATION EXCEPT THAT A CONSTRUCTION JOINT WITH A LONGITUDINAL KEYWAY MAY BE PLACED AT SPRING LINE. 6. THICKNESS OF THE DECK SHALL VARY WHEN NECESSARY TO PROVIDE A LEVEL SEAT BUT SHALL NOT BE LESS THAN THE TABULAR VALUES FOR F SHOWN ON TABLE SH. I. 9. D BARS SHALL BE m4 FOR D2=39* OR LESS. •5 FOR D2=42" TO 84" INCLUSIVE AND M6 FOR D2=90' OR OVER. 10. CENTER LINE OF INLET PIPE SHALL INTERSECT INSIDE FACE OF CONE AT SPRING LINE UNLESS OTHERWISE SHOWN. 11. STEPS SHALL CONFORM TO STANDARD PLAN 635 OR 636 UNLESS OTHERWISE SHOWN, STEPS SHALL BE UNIFORMLY SPACED 14" TO 15" OC. THE LOWEST STEP SHALL NOT BE MORE THAN 24' ABOVE THE INVERT. 12. THE FOLLOWING CRITERIA SHALL BE USED FOR THIS MANHOLE: A. MAIN LINE = 36" INSIDE DIAMETER OR LARGER. EXCEPT IF MAIN LINE RCP DOWNSTREAM OR MANHOLE IS 36' TO 42" INSIDE DIAMETER AND MAIN LINE RCP UPSTREAM IS 33' OR LESS STANDARD PLAN 321 SHALL BE USED. OFESSbyV W Z ac Mo.35273 * Exp•9/30/" ,t OF' C�►�� B. THE OUTSIDE DIAMETER OF THE LATERAL MUST BE LESS THAN OR EOUAL TO I/2 THE INSIDE DIAMETER OF THE MAIN LINE. IF THE UPSTREAM AND DOWNSTREAM DIAMETERS OF THE MANHOLE ARE NOT THE SAME, THE GOVERNING INSIDE DIAMETER OF THE MAIN LINE SHALL BE CONSIDERED TO BE THAT WHERE THE EXTENDED CENTER LINE OF THE LATERAL ENTERS THE MANHOLE. 11 C. IN NO INSTANCE SHALL THE INSIDE DIAMETER OF THE LATERAL TO THE MANHOLE BE GREATER THAN 30". 13. MANHOLE FRAME AND COVER SHALL CONFORM TO STANDARD PLAN 630 - UNLESS OTHERWISE SHOWN. 14. MANHOLE SHAFT SHALL CONFORM TO STANDARD PLAN 324 UNLESS OTHERWISE SHOWN. 15. WHERE A MANHOLE SHAFT - 36 -INCH WITHOUT REDUCER IS SPECIFIED REFER TO STANDARD PLAN 326. 16. WHERE A PRESSURE MANHOLE SHAFT - WITH ECCENTRIC REDUCER IS SPECIFIED REFER TO STANDARD PLAN 328. 17. WHERE A PRESSURE MANHOLE SHAFT - 36 -INCH WITHOUT REDUCER IS SPECIFIED REFER TO STANDARD PLAN 329. THE FOLLOWING STANDARD PLANS ARE INCORPORATED HEREIN: 324 MANHOLE SHAFT - WITH ECCENTRIC REDUCER 326 MANHOLE SHAFT - 36 -INCH WITHOUT REDUCER 328 PRESSURE MANHOLE SHAFT - WITH ECCENTRIC 329 PRESSURE MANHOLE SHAFT 36 -INCH WITHOUT REDUCER 630 24 -INCH MANHOLE FRAME AND COVER 633 36 -INCH MANHOLE FRAME AND COVER 635 STEEL STEP 636 POLYPROPYLENE PLASTIC STEP AMERICAN PUBLIC WORKS ASSOCIATION - SOUTHERN CALIFORNIA CHAPTER PROMULGATED BY THE APWA-AOC JOINT CooPERATWE COMMrri'eE MANHOLE PIPE TO PIPE (O NE OR BOTH MAIN LINE ID'S 33" OR SMALLER STANDARD PLAN 321-0 USE WITH STANDARD SPECIFICATIONS FOR PUBLIC WORKS CONSTRUCTION t TOP OF BEDDING B UNLESS BACKFILL SNAIL SC ?URSUANT TO SECTION 30(o-1,3.1 OF THE STANDARD �THERWISE NOTED IN THE 30 PECIFICATIONS SPECIFICATIONS FOR PUBLIC WORKS CONSTRUCTION ( LATEST EDITION),F 1 .` -- SPECIFIED AS FOLLOWS •• EXCAVATED BANK OR SHEETING w w g. ROCKS GREATER TRAIN G" IN ANY BEDDING 9 b BEDDING A DIMENSION WILL UOT SE PERMITTED in _ - IN BAUFU PLACED BETWEEN 1' ASOVE BEDDING MATERIAL BELOW BOTTOM OF RCP SMALL BE 1/120' FOR PIPES 39' 1N THE TOP OF kNY PIPE OR SOX AND V AND LARGER IN DIAMETER. AND 4' FOR •. •••• •� BELOW PAVEMENT SUBC,RADE, RCP LESS THAN 31' IN DIAMETER. IN NO CASE SHALL IT BE LESS THAN EXCAVATION TO THIS I' BELOW ANY BELL OR COLLAR 40 MI N. LINE PERMITTED 1 r b. RDCKS GREATER I RRLN 2 /Z • IN ANT CASE 3 DIMENSI(NV WILL NOT ISE PERMITTED IN BACKFILL PLACED WITHIN 1' OF REINFORCED CONCRETE PIPE PAVEMENT SUBGRADE. NO�.�: CASE 3 BEDDING & BACKFILL AROUND RCP (LOAD FACTOR 1.8) (s) W AT SPRING LINE SMALL NOT BE LESS THAN THE FOLLOWING: 6' FOR RCP 60. OR LESS IN DIAMETER. 10' FOR RCP 63' TO 108' INCLUSIVE IN DIAMETER. AND 12' FOR PIPE LARGER THAN 108' IN DIAMETER. THESE DIMENSIONS MAY INCLUDE THE THICKNESS OF ANY SHEETING. (b) WHERE COVER IS 10'-0. OR LESS. W MEASURED AT THE TOP OF THE RCP MAY BE ANY DIMENSION GREATER THAN THE ABOVE SPECIFIED MINIMUM. UNLESS OTHERWISE SPECIFIED ON THE PROJECT DRAWINGS. (e) WHERE COVER IS GREATER THAN 10'-0'. W MEASURED AT TOP OF PIPE SMALL NOT BE GREATER THAN 10' FOR RCP 108• IN DIAMETER OR LESS. OR 12' FOR RCP OVER 108' IN DIAMETER UNLESS THE CONTRACTOR AT HIS OWN EXPENSE PROVIDES CASE I BEDDING OR STRONGER RCP. THESE DIMENSIONS INCLUDE THE THICKNESS OF ANY SHEETING. (f) SCREED BEDDING A TO FIT CURVATURE AND GRADE OF RCP. TYPE OF SCREED AND THE METHOD OF USE TO BE APPROVED BY THE ENGINEER. VOTE I. USE CASE 3 FOR RCP. CASE 2 FOR VITRIFIED CLAY, PLASTIC AND S. WHEN'E CALLED FOR BY THE DEPARTMENT'S STRUCTURAL PLAIN CONCRETE PIPE UNLESS OTHERWISE SPECIFIED OR SHOWN ON DESIGN MANUAL. OR WHERE SPECIFIED ON THE PROJECT THE PROJECT DRAWINGS. DRAWINGS. CONCRETE SHALL BE 420-C-2000. 2. FOR RCP 27' IN DIAMETER AND LARGER. BEDDING A SHALL BE COM- 6. CONCRETE BACKFILL SHALL BE POURED FROM WALL POSED OF SAND, 3/4' OR 1/2' CRUSHED ROCK. NO. 3 OR 4 CONCRETE TO WALL Of THE TRENCH AND FROM THE BOTTOM OF THE TRENCH AGGREGATE OR GRAVEL OR OTHER GRANULAR MATERIAL AS SPECIFIED TO A MINIMUff DEPTH OF 4. OVER THE TOP OF THE PIPE. AND SHALL HAVE A SAND EOUIVALENT VALUE OF NOT LESS THAN 20 UNLESS OTHERWISE APPROVED BY THE ENGINEER. 7. CONCRETE BACKFILL SHALL BE PROVIDED FOR RCP i8. 1N DIAMETER 3. WHERE RCP SMALLER THAN 27' IN DIAMETER IS USED. THE REOUIRE- OR LESS WHERE THE COVER IS EOUAL TO OR LESS THAN 24", FOR RCP GREATER THAN 21' IN DIAMETER BUT LESS THAN 39' WHERE MENTS IN NOTE 2 SHALL BE MET EXCEPT THAT A GRADATION NO THE COVER IS LESS THAN 15' AND FOR RCP 39' OR GREATER WHERE COARSER THAN NO. 4 CONCRETE AGGREGATE OR NO COARSER THAN THE COVER IS LESS THAN 12'. CONCRETE BACKFILL SHALL BE IN 1/2' CRUSHED ROCK SHALL BE USED. ACCORDANCE WITH NOTES 5 AND 6. 4. BEDDING B SHALL BE COMPOSED Of SAND OR OTHER GRANULAR 8. 3 -EDGE BEARING TEST LOAD FACTOR = 1.0. MATERIAL AND SHALL HAVE A SAND EQUIVALENT VALUE NOT LESS THAN 20 AS SPECIFIED IN SUBSECTION 306-1.2.1 AS AMENDED UN- LESS OTHERWISE APPROVED BY THE ENGINEER AND SHALL BE COM- PLETED PRIOR TO PLACING THE BALANCE OF THE BACKFILL. THE MAXIMUM ROCK SIZE FOR BEDDING B SHALL BE 4' IN THE GREATEST DIMENSION. NESTING OF ROCKS WILL NOT BE PERMITTED. LOS ANGELES COUNTY DEPARTMENT OF PUBLIC WORKS STANDARD PLAN PIPE BEDDING IN TRENCHES 3080-0