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SS9901-SP041213 205 West Highway 370 Gretna,Nebraska 68028 F—lifFie Phone: 402-332-4818 Toll Free: 800-933-4818 I NC. Fax: 402-332-3036 website: WWW.freeflowinc.corn Designers and Manufacturers of Free Flow Metering Flumes November 12, 2004 CUSTOMER: Can-fer Constr. Co. Coppell,TX EOUIPMENT SUPPLIED: 60" dia. Prefabricated Fiberglass Metering Manhole, with 18" Parshall Flume SUBMITTAL DATA ENCLOSED: Dwg. 71224 Metering manhole dimensions Dwg 71226 Metering Manhole details Spec 51731A Specifications of Metering Manhole P.6, Bull PF Parshall Flume dimensions P.7, Bull PF Inlet&outlet adapter dimensions Dwg. 34421 Discharge table for 18" Parshall Flume ,,... ,, 27879 Manhole Installation Instructions #: ,.. , ,,.,.. ,,,, 0 ;32572 Handling,Maintenance& Operatio fflturoc; D ' -7-1-,.s re..,:2.p i:-, 1:,,- ,;44:)rerai c,,,.,-,f0::-„,,-4(r4 ‘,•;t4) ,--4■14-- ---1 kt: .44 r:411 / 4:`,r1v c',ovt, ,,c4rIs icol-r4 s4;4--:r.) ^o'; l':'':-4.1.4%,.• . -4,r.:4..,i,r,24,,;•tiri::.1t4,r,P4.,:47r,?,- , .,r rr-JII.E: c' , -i, or sieta;t:,:: ,:7'rn-:':.-,■,.,''S Or .i c,Q4Ir4t or s.J..cc :o relic-4/.: 4he Prozarci :.4' rpon cr t.: ,..-,- artal ess■bifLy for any ericr 9 c.'ovai4on 143—‘ -;;:•4',:—.` t fes.ioitc.Irnents • CAN-FER CONS TR t iCTION .i •.?,,, /___ /11----- ,f;• . --------- ''•=f-1:44.17.42LMSaprgt*Z2Z=17.7-7';,:,,,,-ts..;:varg 205 West Highway 370 ��� Gretna, NE 68028 f tCGL 800-933-4816 INC. Fax 402-332-3036 HANDLING,MAINTENANCE &OPERATION OF FLUMES ON DELIVERY OF FLUME When flume is delivered check that all skids,parts and hardware have arrived. Check against packing list. If fasteners or sealant are listed be sure that they have arrived with the flume. Contact FREE FLOW if any discrepancies are noted. Inspect all fiberglass parts for any destine that may have occurred during shipment. The fiberglass surfaces have a gel-coat finish that should not be broken,scraped or otherwise damaged. FREE FLOW can provide field touch-up kits for minor scratches that occur in shipment or installation. If major damage has occurred, immediately notify trucking or shipping company and file damage claims. STORAGE AT JOBS ITE Flumes should be kept on shipping skid until ready for installation. The skid should be kept level to prevent possible distortion of part. Do not store or stack other equipment on top of flume. If possible keep parts covered. If gel-coat finish is scraped,and raw(green)fiberglass is showing, the exposed sections must be protected from the weather until repairs can be made. Store fasteners or sealant where they can be found later. HANDLING DURING INSTALLATION Most fiberglass flow elements can be set in place by hand,without the assistance of cranes or power equipment. During handling do not allow the flume to become distorted which may result in damage. If cranes or other lifting equipment is used do not use cables or chain Nylon or web slings should be placed around flume. Spreader bars should be used to keep flume level during lifting. Do not attach slings to crosabraces or lift flume by crossbreees. The flume should be installed as shown on the installation drawing for the specific type of flow clement used. In general most flumes are installed with a particular section of the floor set level in both directions. Engineer's specified elevations should be observed. Care should be taken that flume stays level during installation and that sidewalls are not distorted due to concrete or grout pressure. FLUME MAINTENANCE Flumes do not have any moving parts and no maintenance should be required under normal operation. Standard Construction FREE FLOW flumes are fabricated from maintenance free fiberglass. The white gel- coat finish on the wetted surfaces and the colored gel-coat on the exterior are very resistant to water,chemicals, and the effects of weather. It is important that the gel-coat finish is intact on all surfaces- LTV exposure and water can with time,deteriorate raw fiberglass. Most flumes are self scouring by design and the smooth fiberglass surfaces aid in this cleaning. If algae or debris does accumulate it can be removed with brushes,water and bathroom,kitchen or industrial cleaners that are suitable for fiberglass surfaces, If the use of strong cleaners is planned,the effect of the chemicals on downstream equipment or filters should be investigated before use. if flume is in a manhole or other confined area be certain that hazardous or toxic gases cannot accumulate at the flume. Provide enough ventilation so cleaning agent fumes cannot overcome workers. Additional personnel should always be standing by outside of manholes anytime anyone is in a manhole. An emergency procedure should be developed in advance and practiced in case a worker in the manhole is overcome. In some instances a man with an air tank cannot enter a manhole without removing the air tank from his back. Be certain that a complete and operational rescue plan is in place. FLUME OPERATION l'lumes are a primary element which have a known depth to flow relationship,The constricted throat of th eflume produces a differential head that can be related to discharge. For proper operation of a flume, the correct conditions must be present upstream of the flume,at the flume itself, and downstream of the flume. Approach conditions to flumes should be designed to promote lbuninar flow through the flume. Channel turns, ees, elevation drops, and other disturbance creating situations immediately upstream of the flume should be avoided. If the flume is set above the channel floor, a l:4i sloping ramp up to the inlet should be provided. Flumes have a floor section that must be set level in both directions. The section that is to be set level is different on different flume types, The flume should be set at an elevation such that"Free Flow",also known as"modular flow"conditions are present. The channel or piping downstream of the flow should not prevent the water from leaving the metering area. `ollapsed tiles,roots gi',wing into a pipeline and silting can eventually result in submerged flow conditions even if the flume was originally installed to operate in modular flow conditions. INSTRUMENTATION Instruments which continuously measure the depth and convert it to flow are very often used. The accuracy of these instruments is very dependent on correct calibration. The level or flow displayed by the instrument should agree with the actual flow in the flume. Proper instrument calibration as detailed in the instrument instruction manual should always be followed. 205 West Highway 370 Gretna, NE 68028 R�,E PLUW 800-933-4818 Fax 402-332-3036 32,572 3/el c'199l Free Flow,Inc. / RTE ® 5. Any void spaces between exterior bottom of flume ING and concrete slab must be filled with grout. INSTALLATION INSTRUCTIONS Pipe Connections: FOR PREFABRICATED FLOW 1. Support upstream&downstream connecting pipes METERING MANHOLES from bedding. To Move Metering Manhole: 2. Use flexible neoprene couplings&stainless steel band clamps supplied with manhole to make 1. Use slings in good repair. watertight connections between connecting pipes and metering manhole. 2. When moving manhole in horizontal orientation, use a spreader bar and slings around manhole 3. Do not use lubricant when installing couplings. exterior. Backfilling: 3_ When resting the manhole on its side,do not let load rest on pipe connections,fittings or lid. 1. Place backfill around manhole in uniform lifts with 12 inch maximum height of each lift. 4. When moving manhole into operating position, inspect fiberglass lifting eyes for shipping damage 2. Use Pea Gravel to backfill within three feet of before using. Do not use if damaged. Use clevis to finish grade. attach slings to lifting eyes. 3. Backfill material used within two feet of manhole To Install Metering Manhole: shall not contain soil lumps,concrete,rocks of over 1 inch in size. 1. Observe all safe excavating and trenching practices. 4. Manholes with H-20 highway loading to have a minimum of 12"from ledge on manhole top to 2. Concrete slab with embedded anchor bolts must finished grade. have surface finished to within 1/8 inch. Allow at least three clay cure before placing manhole on 5. Use concrete grade adjustment shims on manhole concrete slab. ledge to set ring&cover at correct elevation. Grout inside of grade rings. 3. Concrete slab must be of sufficient thickness to provide adequate weight to resist buoyant force of 6. Interior void space between manhole interior walls surrounding water table on flume and manhole. and flume exterior walls to be filled with gravel to within 2"of top flange on flume. Finish with two 4. Do not permit groundwater or surface water to inches of concrete,slope surfaces to drain water into accumulate in open excavation around manhole. flume channel. A SPREADER SLING�� SPREADER BAR BAR V Li FILL LIFTING VOIDS EYE O 'I1 I i ©1992 Free Flow,Inc. FILL VOIDS SLAB 27879 VS.1.111 4 - K Cj N = a .. W r�` n "T y r x, r a „ rJ .^ 4, 0 rz- 4.1 t1 m c-i' ... . 1., ,• . -.-.r_r, .i 01 .1 rl rl r^. .. .. r,r. r, 1. (n cn rn r•l v. 3 m 1 3 n,a , _ , V 1't • .r V T [ aG .e1 ^l _ C l a. T C ... .•-^ 41 �• -.J rl e., , , ri l r1 ,ra rl rr 1 .1 • a G s .A a a rn a C. - - - _ — — OD• • • • • • . . • • • . • CD n N r-1 .--i • N 3 C• - y1 n r 7 .n 3` T.il • D N r _ M r, 0 en o ..,r. v.. .. - - .•.• Q �+j• , , _ _ `t r n -. G 0 r 7.. I 4+rn W rr -l7 r • 3 • .., -t. 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N r r..r• ti >. • • • • --•Cr' + A^ n v S ✓-,•• .r 01.7,r.. 7 - CI N e C1 M1r .'1 r. a •-• 01 01 rR ('1 .3 111 a1�J . 4J q1 0 - Cl.T V1 - t r` -, , 1.• 11 r- .00' `J -s r-2 a n N? 0 - - - - -- ... - - Free Flow Pa rshall Flume Dimensions k P H r B T F 01'I'41 G D W H Flow C Ib ....... ►1 2+11— ,--r R \ge.....____________-- 2/3A A Vertical ribs are optional on Fiberglass angle not flumes 3 inch and smaller shown on top view L L J J '''''IN E -0- r-V ,—411-Horizontal Rib 12"inch and larger sizes N V �1� -- � — K W A 2/3-A B C D E F G K N P T R V 1 14-9/32 9-17/32 14 3-21/32 6-19/32 12 3 8 3/4 1-1/8 25 1/4 1-1/2 - 2 16-5/16 10-7/8 16 5-5/16 8-13/32 12 4-1/2 10 7/8 1-11116 30-1/2 1/4 1-1/2 - 3 18-3/8 12-1/4 18 7 10-3/16 24 6 12 1 2-114 36 1/4 1-3/4 2 6 24-7/16 16-5/16 24 15-1/2 15-5/8 24 12 24 3 4-1/2 60 1/4 1-3/4 2-1/2 9 34-5/8 23-1/8 34 15 22-5/8 30 12 18 3 4-1/2 64 1/4 2-1/2 3 12 54 36 52-7/8 24 33-1/4 36 24 36 3 9 112-7/8 3/8 2-1/2 3 18 57 38 55-7/8 30 40-3/8 36 24 36 3 9 115-7/8 3/8 2-1/2 3 24 60 40 58-7/8 36 47-112 36 24 36 3 9 118-7/8 3/8 2-1/2 3 36 66 44 64-3/4 48 61-7/8 36 24 36 3 9 124-3/4 3/8 2-1/2 3 48 72 48 70-5/8 60 76-1/4 36 24 36 3 9 130-5/8 3/8 2-1/2 3 60 78 52 76-1/2 72 90-5/8 36 24 36 3 9 136-1/2 3/8 2-1/2 3 72 84 56 82-3/8 84 105 36 24 36 3 9 142-3/8 3/8 2-1/2 3 6 Dimensions in Inches s _ I • R(*) 1 1E47, ,I v i P a S v _ 5 F u� m �� 6 a R E §PQZW N V, ? 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