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i - 81._ 4l1 <br />2 <br />3 <br />v] <br />CONCRETE WALL <br />MANHOLE RUNG DETAIL <br />4 <br />6 <br />7 <br />8 <br />SECTION B -B <br />THRU RESI'LENT SEAL <br />AND MANHOLE <br />N <br />to <br />9 <br />It <br />12 <br />'8" SO. EXTRUDED ALUMINUM <br />ALCOA 6061 - T6 OR EQUAL <br />�Z <br />ell <br />3 As <br />CAST IRON MANHOLE COVER <br />WT.= 430 LBS. <br />E.L. LEBARON FOUNDRY CO. LT. 105 OR EQUAL <br />STANDARD FRAME AND COVER <br />AS SPECIFIED <br />D <br />2 =0 "Ir ADJUST TO GRADE WIT" PRECAST <br />,. TOP RING OR BRICK <br />3.0 STEPS PRECAST INTO WALL SECTION <br />AS REQUIRED ON 12" CENTERS <br />I :j.; —v'I -- - —- - —- ;f SEE DETAILS THIS SHEET <br />SECTION A- A <br />GASKET & FLANGE <br />OMITTED <br />PRECAST CONCRETE <br />MANHOLE <br />TYPE OPTIONAL <br />A.C. TEE WITH 6° LEG <br />BRICK DAM TO <br />MID DIAMETER — — — - -- —_ <br />A. C. COUPLING <br />MAN -HOLE WALL <br />� t <br />6"MINIMUM <br />ENCASEMENT <br />A. C. 6 DROP <br />USE DUPLEX <br />^ t. <br />—r <br />r•`r <br />ADAPTOR IF NOT <br /><' ri <br />1 :t r i= <br />MiACHiNEO LAND <br />�, ., <br />-; , <br />I <br />�';� •( <br />SEE STANDARD <br />MANHOLE DETAILS <br />\ •i S <br />MANHOLE BASE , �, •r , > - G , <br />1 , Y: <br />r <br />+<�t � +t. }i�,�a Al r{.y =4 F�b <_y. n= � =•s. <br />6"GRAVEL BASE' <br />DROP MANHOLE SECTION <br />6"-90 A C. <br />ELBOW <br />0.12 SO IN LIN. FT. REINFORCEMENT <br />PRECAST MANHOLE NOTES <br />1 1 /2 "COR— TEN BOLTS OR APPROVED EQUAL WITH WASHER <br />2 CAST IRON: COMPRESSION FLANGE A.S.T. M. A48 CLASS 20 <br />SIZE OF FLANGE TO MEET CLASS 8i TYPE OF PIPE <br />3 -PIPE SECTION <br />4 CAST IRON INSERT °-' 1/2" TAP A. S. T. M, A48 <br />5 SMOOTH BEVELED SURFACE TO RECEIVE RUBBER GASKET <br />6 RUBBER GASKET A.S.T.M. C4-43 -65 <br />7 BEVEL TO ALLOW FOR MISALIGNMENT <br />8 INNER SURFACE OF PRECAST CONCRETE MANHOLE <br />9 OUTER SURFACE OF PRE —CAST CONCRETE MANHOLE <br />IO PRE-CAST MANHOLE A. S.T.M C478-68 <br />I1 ASBESTOS CEMENT CLAY CAST IRON OR CONCRETE PIPE <br />12 9 ALLOWABLE MISALIGNMENT OFF CENTER IN ANY DIRECTION <br />WITH ENGINEERS APPROVAL <br />DROP SECTION MAY BE CONSTRUCTED <br />OF BRICK AS SHOWN <br />I'— 044 <br />FITTING BELLS TO <br />BE KEPT FREE <br />OF CONCRETE <br />1, °O,l a a A <br />SIDE OF <br />EXCAVATION <br />i <br />3'-O° W X 2` —O" D <br />PLAN BEND <br />THRUST BLOCK WATER MAIN <br />1, CLERK OF THE TOWN OF LEXINGTON, MASS.' <br />HEREBY CERTIFY THAT THE NOTICE OF APPROVAL <br />OF THIS PLAN BY THE LEXINGTON PLANNING BOARD <br />HAS BEEN RECEIVED AND RECORDED AT THIS OFFICE <br />AND NO APPEAL WAS RECEIVED DURING 'THE TWENTY <br />(20) DAYS NEXT AFTER SUCH RECEIPT AND RECORDING <br />OF SAID NOTICE. <br />. <br />DATE 146S% TOWN CLERK <br />APPROVED BY <br />LEXINGTON PLANNING BOARD <br />t0.1 <br />4eta.Gt� tea / qS <br />DATE <br />234;0.3 <br />---_q <br />C.B. ` p CB. <br />1.233.59 <br />23L8I� <br />C+ <br />,2 <br />N <br />\m I <br />_ cv I <br />i <br />i <br />GUTTER GRADES <br />REV. JAN. If, 1931 v 16 j <br />CUL-DE-SAC TRINITY TRINITY COVENANT ESTATES <br />REALTY LEXINGTON, MASS. <br />TRUST DETAILS �. <br />CLEMATI S ROAD <br />OIVA E. HINTSA ASSOCIATES <br />CONSULTING ENGINEERS <br />N E W TON, MASS. <br />SEPT. 3, 1980 SHEET 7 OF 7 <br />