THRUST BLOCK DETAILS - ci.maryville.tn.us

1 45 degree BENDS. Revision 3/10/99: As an alternate "SwivelX" or 90 degree BENDS. SIZE 2" 4" 6" 8" 10" 12" 18". approved equal fitting may be used provided the SIZE 2" 4" 6" 8" 10" 12" 18". CITY OF MARYVILLE. A 9" 13" 18" 24" 29" 34" 50". indicated dimensions are maintained. SIDE OF. A 9" 18" 24" 32" 40" 46" 68". TRENCH. B 9" 18" 24" 32" 40" 46" 68". B 9" 13" 18" 24" 29" 34" 50" GENERAL UTILITY NOTES: C 8" 8" 10" 12" 14" 16" 14". PIPE BEDDING - A continuous and uniform bedding shall be C 9" 9" 12" 12" 15" 16" 22". GATE VALVE All sewer and water extensions shall be built in accordance D 6" 6" 9" 12" 15" 18" 18". provided in the trench for all buried pipe. D 8" 8" 12" 16" 20" 25" 24". with the RULES, REGULATIONS, RATES, AND POLICIES of the City of Maryville, Water Quality Control Department, Maryville, Tennessee (copies are available from the City of Maryville (COM) and PIPE COVER - All distributor mains shall be provided with 11 1/4 degree BENDS on file with the Tennessee State Department of Health and C.)

2 22 1/2 degree BENDS Environment). 3' 3' 3' A SIZE 2" 4" 6" 8" 10" 12" 18". sufficient earth or other suitable cover to prevent freezing SIZE 2" 4" 6" 8" 10" 12" 18". A 9" 9" 9" 12" 15" 18" 26". A 9" 9" 13" 18" 21" 24" 36" In cases of conflict the City of Maryville (COM) regulations and provide protection to the pipe. The cover shall not be 9" 9" 9" 12" 15" 18" 26". B shall rule. BENDS. B 9" 9" 13" 18" 21" 24" 36". less than 36 inches for 6-inch and 8-inch pipe and 42-inches C 8" 8" 10" 12" 14" 16" 15". C 8" 8" 10" 12" 14" 16" 15". D 4" 4" 5" 6" 8" 9" 16" It shall be the developers and contractors responsibility to for 10-inch and 12-inch pipe measured above the top of the pipe. D 4" 4" 6" 9" 11" 13" 16" obtain and follow the regulations of the City of Maryville. GATE VALVE GATE VALVE. Reference the minimum depth notes "Water System Special Notes". Easements shall exist as per the subdivision plat or recorded CROSS.

3 Easements documents. If the necessary easements are not in place the Branch developer shall obtain and furnish the City of Maryville with easements for the portions or utility lines that cross private property. The easement documents shall be reviewed by the City of Maryville VALVE LOCATIONS @ A CROSS SIDE OF. TEE. for acceptability prior to signatures. All easement documents shall be TRENCH MAIN 2"-6" 8"-12" 8"-10" 12" 12" 12" 18" recorded prior to construction of the utility line(s). D. BRANCH 2"-6" 2"-6" 8"-10" 2"-6" 8"-10" 12" 16"-18". NOTE: All water and sewer lines shall be laid in undisturbed native In locations where the valve or valve and cap are likely Main Main A 20" 20" 33" 20" 33" 39" 57". soil whenever practical. to be disturbed or are for a temporary "dead end" B 20" 20" 33" 20" 33" 39" 57". the use of "all thread" as shown in the Fire Hydrant B. C 12" 12" 12" 12" 12" 12" 30". detail will be required by the City of Maryville.

4 At the junction of all undisturbed soil and fill sections of the 13" 13" 21" 13" 21" 26" 24". SEE. D. pipe trench the backfill material shall be divided by an impermeable NOTE. C SIDE OF section of fill ( compacted clay) around the installed pipe to GATE VALVE A. TRENCH. prevent piping of water through the pipe bedding. TYPICAL SECT. TEE Utilities crossing under other utilities shall be back filled with compacted No. 7 stone to the spring line of the upper utility to PLUG The minimum THRUST BLOCK dimensions in prevent settling of the utility. Any utility trench within the roadway 3' 3'. SIDE OF live zone shall be totally backfilled with compacted stone as per the SIZE 2" 4" 6" 8" 10" 12" 18" contact with the bearing soil TRENCH. COM requirements. PLUG A 12" 14" 20" 27" 33" 38" 56" shall be 9 inches by 9 inches B 12" 14" 20" 27" 33" 38" 56". WATER AND SEWER systems shall not be granted final C 12" 12" 12" 12" 12" 12" 30" approval by the City of Maryville until "AS BUILT" drawings have D 11" 11" 11" 15" 22" 32" 32" been completed and are acceptable to the City of Maryville.

5 These dimensions are minimums based on 100 psi working line pressures C. A. GATE VALVE. and 2000 psf soil bearing capacity. For other working pressure and/or TEE. 2" Sch 40. Stl. Pipe for 8" diameter main and less different soil bearing capacity the dimensions shall be recalculated by the D 3" Sch 40 Stl Pipe for 10" and 12"diameter main MLDI WATER LINE B. 4" Sch 40 Stl Pipe for 18" diameter main 6" SQ. ST'L. PL. engineer. VALVE LOCATIONS @ A TEE 1" TH'K. TRENCH DETAILS PLUG. THRUST blocks for plugs shall be the wider of 1. the dimension shown above or 2. the width of the trench plus 2 inches THRUST BLOCK DETAILS . measured at the soil bearing surface. ST'D. FRAME & COVER. AIR VENT (AIR IN). Where a two inch water meter is to be installed -- DIA. EQ. OR GREATER. THAN NB OF AIR VALVE. Revision 3/10/99: As an alternate "SwivelX" or GIP OR ST. ST'L. approved equal fitting may be used provided the indicated dimensions are maintained.

6 Use : 1. The appropriate sized tee. AIR VENT (AIR OUT). 2. The six inch gate valves may be eliminated and the tapped end cap (plug) DIA. EQ. OR GREATER. THAN NB OF AIR VALVE. placed directly on the tee. GIP OR ST. ST'L. 3. A twelve inch brass nipple - the nipple shall be installed level. BUFFALO TYPE VALVE BOX. 4. A two inch wheel valve PRE-CAST FLAT TOP OR. 12" MIN ECCENTRIC CONE FRAME AND. 5. The two inch valve shall be installed in either a valve box or TYP. GRATE OFFST TO WALL AND FIRE HYDRANT 6" GATE VALVE. meter box. OVER STEP. BOTTOM OF FLANGE TO. The City of Maryville will provide the twelve inch brass nipple and the two BE 2" " MAX. inch wheel valve. ABOVE FINISH GRADE. 3' 3'. FINISH GRADE. 6" OR GREATER. TEE, , AND END CAP. WATER LINE. TO BE ATTACHED WITH ALL 3/4" ALL THREAD. (OPTION 1). THREADED ROD (2 PLACES). STEPS. "VENT-O-MAT" AIR RELEASE VALVE. 36" w/NUTS AND "DUC-LUGS". 6" GATE VALVE. SERIES RBX (WATER) MIN.

7 (ALL THREAD TO BE TAR COATED). 2" CRUSHED STONE. 6 CU. FT. 2" IRON PIPE TO 2" PVC RISER PRE-CAST BARREL. ADAPTER. THRUST BLOCK . AS. RBX COMBINED AIR/VACUUM VALVES. 6". REQ'D. WATER MAIN. FOR TWO INCH VALVE CONNECTION. BETWEEN TEE AND VALVE USE: 2500 psi CONCRETE. BEGIN 2" PVC TWO STAINLESS STEEL NIPPLES AND THRUST BLOCK TEE IF PERMANENT HYDRANT. WATER LINE ONE THREADED STAINLESS STEEL 3' 3' main line by 6 inch tee TWO INCH BALL VALVE. 3'. 6" END CAP - FOR THREE INCH AND LARGER VALVE 3/4" ALL THREAD. (OPTION 2). 6" DUCTILE IRON NIPPLE (2). TAPPED FOR 2" IRON CONNECTION BETWEEN TEE AND VALVE USE: w/NUTS, WASHERS AND EYE BOLTS. PIPE THREAD. TWO FLANGED SPOOLS AND. (ALL THREAD TO BE TAR COATED). ONE FLANGED GATE VALVE. 6" OR GREATER x 6" TEE DIMENSIONS TO MATCH THE VALVE RATING NOTE: DIA. The valve shall be connected to the tee and hydrant using 6" OR GREATER GATE VALVE NOTES: one of the two alternatives shown. A minimum 12" 1.

8 ALL MANHOLE PARTS TO MEET of two (2) three quarter inch (3/4) diameter rods MIN. STANDARDS. shall be used for each tee to valve or tee to hydrant attachment. 2. PERFORATED COVER MAY BE USED IN. Revision 3/10/99: As an alternate "SwivelX" or FIRE HYDRANT DETAIL (TYP.). LIEU OF VENTS WITH APPROVAL. 1/2 DIA. approved equal fitting may be used provided the 3. CONTRACTOR TO VERIFY ADEQUATE. indicated dimensions are maintained. CLEARANCES INSIDE OF MANHOLE FOR. VALVE USED. #7 CRUSHED STONE 4. LINE DEPTH MUST BE ADEQUATE TO ALLOW. TYPICAL FIRE HYDRANT. WATER LINE. VALVE AND VALVE MANHOLE TO BE BELOW INSTALLATION. GROUND TIE-IN FOR 2" PVC WATER LINE. COMBINED AIR/VACUUM RELEASE VALVE. TO 6" OR LARGER MAIN WATER LINE. CITY OF MARYVILLE. WATER SYSTEM SPECIAL NOTES: Depth - All water lines shall be installed a sufficient depth MATERIALS - All materials used in the project shall be acceptable to provide for minimum cover of not less than 36 inches to the COM, Water Quality Control Department.

9 All water lines for 6" and 8" diameter pipes, 42 inches for 10", 12" and greater than 2 inches in diameter shall be class 51 cement mortar 14" pipe. COVER IS TO BE MEASURED FROM THE SUBGRADE lined ductile iron. ELEVATION AT THE CURB LINE OF THE ROAD ADJACENT TO. WATER QUALITY CONTROL. THE PIPE LINE OR THE EXISTING GROUND AT THE TIME OF PRESSURE AND FLOW CONTROL - CONSTRUCTION OR THE FINISH GRADE DIRECTLY OVER THE PIPE, Pressure and flow reducing valves shall be installed in each house CITY OF MARYVILLE. WHICHEVER IS LOWER. No pipe is to be laid so that a driveway or at each connection to a structure to maintain domestic will create a situation that will violate the minimum cover require- ments. pressure at or below 80 psi unless the pipe system has been MARYVILLE, TENNESSEE. specifically designed to handle pressures in excess of 80 psi and permission is obtained from the COM, Water Quality DRAWN BY: TITLE: SCALE: NONE.

10 Control Department. APP'D BY: JG STANDARD DETAIL DWGS. SHEET. DATE: 1-27-97 WATER 1 of 1. 6/16/98. DESCRIPTION: rev 5/27/98 add fire hydrant detail, revise spelling, move some detail drawings rev 6/16/98 fire hydrant detail - added all thread rev 10/22/98 changed psi to psf in THRUST blocking DETAILS rev 11/6/98 clarify air vacuum release notes and connections. rev 11/10/98 revise THRUST blocking dimensions for 2000 psf and 150 psi test pressure rev 2/2/99 revise valve restraint and pipe class