HomeMy Public PortalAbout3824566" MIN.
CLASS "A"
CONCRETE
ENCASEMENT
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1) WHEN A CONNECTION IS ALLOWED LARGER THAN 6" DIAMETER, A SADDLE MAY BE USED IF THE I.D.
OF THE CONNECTION PIPE IS NOT GREATER THAN ONE-HALF (1/2) OF THE I.D. OF THE MAIN SEWER.
(EXAMPLE: 24" x 10")
2) IF THE I.D. OF THE CONNECTION PIPE IS GREATER THAN ONE-HALF (1/2) THE I.D. OF THE MAIN SEWER,
THE WYE OR TEE MUST BE "ROLLED IN". (EXAMPLE: 15" x 8")
3) THIS IS ACCOMPLISHED BY BREAKING AWAY AND REMOVING ONE SECTION OF PIPE. THE TOP HALF OF THE
BELL ON THE PIPE LYING ADJACENT TO THE GAP IS CAREFULLY BROKEN OFF. THE TOP HALF OF THE BELL
ON THE MAIN REPLACEMENT SECTION (WITH A "TEE" / "WYE") FITTING IS ALSO BROKEN OFF. THE
REPLACEMENT PIPE IS THEN PLACED IN THE LINE GAP WITH THE STUB POINTED IN THE WRONG DIRECTION.
THE BROKEN BELLS ON THE REPLACEMENT AND ADJOINING PIPE MAKE POSSIBLE FOR THE REPLACEMENT
SECTION TO FIT INTO THE SEWER LINE WITHOUT DISTURBING THE ADJOINING PIPE SECTIONS. THE
REPLACEMENT SECTION IS THEN ROTATED TO THE DESIRED POSITION AND THE BROKEN BELLS ARE
ENCASED WITH A 6" CLASS "A" CONCRETE ENCASEMENT.
"ROLL —IN" (FOR EXISTING
CLAY OR CONCRETE PIPE)
METROPOLITAN ST. LOUIS SEWER DISTRICT
Standard Details of Sewer Construction
Dr. DAB/SAM
Ch. J.C.K.
2009
SHEET 67