CISPI DESIGNATION

Transcription

1 CISPI DESIGNATION SPECIFICATION FOR COUPLING FOR USE IN CONNECTION WITH HUBLESS CAST IRON SOIL PIPE AND FITTINGS FOR SANITARY AND STORM DRAIN, WASTE, AND VENT PIPING APPLICATIONS. This specification is issued under fixed designation 310; number immediately following designation indicates year original adoption or, in case revision, year last revision. A number in parenses indicates year last reapproval without change. Specifications for se couplings were originally a part standard T. With publication standard for pipe and fittings only, Institute deleted all specifications for se couplings re from and issued specification refore. Current revision approved March 16, 28, Last previous edition The new revision has been edited to reflect manufacturer testing requirements for couplings. GENERAL INFORMATION Several different types hubless couplings are available for use in hubless cast iron sanitary and storm drain, waste and vent piping applications to connect hubless cast iron soil pipe and fittings by using a sleeve-type, or some or type coupling device. It is purpose this Designation CISPI , 12, to furnish information as to characteristics one such sleeve-type couplings and also to furnish suggestions as to installation such couplings when applied to cast iron soil pipe and fittings manufactured in accordance with CISPI Designation 301, latest revision. It must be noted that installation procedures are not a mandatory portion this Designation and illustrative installation instructions included herein are not to be applicable for couplings or than those manufactured in accordance with this designation. The hubless couplings described herein are composed a stainless steel shield, clamp assembly and an elastomeric sealing sleeve conforming to requirements ASTM C564. This elastomeric material was selected for sealing sleeve because balanced combination outstanding properties makes it resistant to abrasion, oil, grease, chemicals, sun, wear, ozone, heat and cold. This elastomeric sealing sleeve also provides a cushioning element in coupling to avoid shock and vibration and to assure a noiseless plumbing system. The 300 series stainless steel was selected for clamp and shield assemblies because it possesses high corrosion resistant characteristics, which have been demonstrated to exist in underground corrosion tests conducted by U.S. Department Commerce through National Bureau Standards. CAST IRON SOIL PIPE INSTITUTE 1064 Delaware Avenue SE Atlanta, Georgia Phone:

2 1. PURPOSE AND SCOPE 1.1 Purpose. The purpose this specification is to establish criteria for material dimensions and dimensional tolerances for one type coupling used in hubless cast iron soil pipe and fittings for sanitary and storm drain, waste and vent piping applications in accordance with general needs producers, distributors, and users. 1.1 Scope. This specification covers coupling assembly identified in following tables. COUPLING ASSEMBLY TABLE Rubber Sealing Sleeve 1, 2, 2A, 3 Shield and Clamp 4, 5, 5A Manufacturer s Item Coupling Assembly TABLES 1-6 Group 022 Code Item# /2 2 x 1-1/ x 2 4 x Size Note: When ordering by se EDP numbers, be sure to include check (3) digit following item number ( ). This check digit is verification group and item number you select. 1.2 Several different types hubless couplings are available for use in hubless cast iron sanitary and storm drain, waste and vent piping applications to connect hubless cast iron soil pipe and fittings by using a sleeve-type, or some or type coupling device. It is purpose this specification to furnish information as to characteristics one such sleeve-type coupling when applied to cast iron manufactured in accordance with Specification A888, latest revision, and CISPI-301, latest revision. 2 REQUIREMENTS FOR THE HUBLESS COUPLINGS REFERENCED IN THIS SPECIFICATION 2.1 DESCRIPTION. The couplings are a sleeve-type. Each coupling shall consist a sealing sleeve and a shield and clamp assembly which joins two spigot ends pipe and/or fittings Each coupling is designed to permit normal expansion, contraction and deflection sanitary and storm drain, waste, and vent piping applications. 2.2 Sealing Sleeve. The sealing sleeve shall be tested in accordance with ASTM D3677 and be manufactured from a properly vulcanized virgin compound where primary elastomer is polychloroprene (neoprene). 2

3 2.2.1 The sealing sleeve shall be made a compound containing a high quality elastomer that complies with dimensions, material specifications, chemical and physical properties as shown in Tables 1, 2, 2A and 3. All surfaces sealing sleeve shall be smooth except for specified marking. The sealing sleeves shall be free from imperfections and porosity The sealing sleeve shall consist one piece conforming to physical requirements Specification ASTM C564. The sealing sleeve shall be tested by sealing sleeve manufacturer for compliance to ASTM C564 during each day production not to exceed 24 hours for each size sealing sleeve being produced. These tests shall be performed at manufacturer location during time production. These tests shall include hardness, elongation and tensile strength, tear strength and compression set. Heat aging, water absorption, ozone resistance, and oil immersion tests shall be performed annually or when formulation or source supply changes, whichever occurs first When testing pipe sealing gaskets, sleeves, prepared specimens shall shall be be 1 1-in. disks disks cut cut from prepared samples in. to ( mm) inches to.090-in. thick and (2.286 not mm) to exceed thick and seven not (7) to exceed plies. seven The thickness (7) plies. For hubless disk coupling shall be gasket measured inserts per a ASTM test specimen D395 measuring Since.43 in. all ( specimens mm) from X.75 sealing in. (19.05 sleeves mm) may are be curved, cut directly not flat, from it is part important provided to measure sample is thickness consistent in thickness. center The thickness disk with sample specimen shall be measured laying in accordance a concave with manner. Test Methods Measure D395, thickness section each Since ply all and specimens add from measured hubless thickness pipe gaskets each are curved, ply (not not to flat, exceed it is important seven plies) to measure to determine thickness original in plied center up thickness sample (to). with The specimen plied up laying target in thickness a concave shall manner. be approximately Measure thickness 0.50 inches. each Take ply and original add measured plied up thickness (to) each and multiply (not to it exceed by 0.75 seven to determine plies) to determine thickness original spacer plied up bar thickness to be used (to) (tn). and Assemble multiply it by.75 plied to up determine specimens thickness in test fixture spacer (ASTM bar D395 to be used figure (tn). 3) Assemble with proper plied thickness up specimens spacer in bars text and fixture place (Test in oven Methods for 22 D395, hrs. at Fig ) +/- with 2 (70 proper +/- 1 thickness C). At spacer bars end and place test in period oven for take 22 h at 158 device +/- 2 F from (70 +/- oven 1 C). and At remove end test period specimens take immediately device from and allow oven and to cool remove per ASTM test specimens D immediately After and allow cooling to cool period in accordance measure with final Test thickness Methods D395, at section center After plied up cooling test specimen period measure placed in a final concave thickness position at on center dial micrometer plied up test to determine specimen placed final a thickness concave position (ti). Calculate on dial micrometer compression to determine set expressed final as a thickness percentage (ti). Calculate original deflection compression as set follows: expressed as a percentage original deflection as follows: CB = [(to-ti)/(to-tn)]x100 x CB = compression set value test method B to = original plied up thickness ti = final plied up thickness tn = thickness spacer bar used manufacturer sealing sleeve, n entity that molds sealing sleeve covered by this standard specification. 2.3 Shield and Clamp Assembly. The shield and clamp assembly shall consist (1) a 300 Series stainless steel corrugated shield, (2) two stainless steel bands for sizes 1 ½, 2, 3, and 4, (see Fig. 1.); four stainless steel bands for sizes 5, 6, 8 and 10, (see Fig. 2.); six stainless steel bands for sizes 12 and 15 (see Fig. 3.) and (3) a stainless steel tightening device for each band. Each tightening device housing shall interlock with a band at unslotted end. The bands are to be fastened to shield by riveting or such or method that shall insure that bands shall not become separated from shield. The shield and clamp assembly shall comply with dimension and material specifications, as are given in Tables 4, 5, and 5A Clamp assemblies shall be tested to withstand no less than 125% manufacturers stated installation torque or a minimum 60 lbf-in. applied torque, whichever is greater, without visible signs failure. The clamp assembly shall be tested over a steel mandrel appropriate diameter and torqued as required. These tests shall be performed randomly on selected samples during course production as needed but not less than one clamp per shift per size during band production manufacturer clamp assembly and shield, n entity that attaches clamp assembly to shield for couplings covered by this standard specification. 3

4 2.4 Marking. The sealing sleeves shall be marked with raised letters at location shown in Table This Marking. marking The shall sealing consist sleeves pipe size, shall country be marked origin, with raised manufacturer s letters at identifying location mark, shown mold in Table number, 1. cavity This marking number, shall and ASTM consist C564, pipe latest size, revision. country Such origin, marking manufacturer s shall not exceed identifying.02 in mark, relief. mold number, cavity 2.4.1number, The shield and ASTM and clamp C564, assembly latest revision. shall be Such marked marking with shall indented not exceed letters.02 at in relief. location shown in Tables The and shield 5. All and marking clamp shall assembly be placed shall on be marked band with assemblies indented letters screw at housing location as shown in Tables 4 and and Marking All marking on shall band be shall placed consist band pipe size. assemblies Marking on screw screw housing housing as shown shall consist in Tables clamp 4 and manufacturer s 5. Marking on name band or registered shall consist U.S. Trademark, pipe size. Marking words on ALL screw STAINLESS, housing and shall country consist origin. clamp manufacturer s name or registered U.S. Trademark, words ALL STAINLESS, and country origin. Size 1-1½" thru 4" TWO BANDS Size 5", 6", 8", and 10" FOUR BANDS Figure 1 Figure COUPLINGS REQUIREMENTS AND TEST METHODS COUPLINGS 3.1 Assemble REQUIREMENTS each coupling tested AND according TEST METHODS to manufacturer's instructions between two sections 3.1 Assemble randomly each selected coupling hubless tested cast according iron soil pipe to meeting manufacturer's requirements instructions CISPI-301 between two or Specification sections randomly A888 and selected conduct hubless following cast iron test: soil deflection pipe meeting and shear. requirements In addition, an CISPI-301 unrestrained or hydrostatic Specification test A888 shall and be conduct performed between following two test: sections deflection machined and shear. steel In addition, pipe. The an unrestrained hydrostatic tests shall shall be be performed on between randomly two selected sections couplings machined each steel size pipe. during The unrestrained course production hydrostatic using tests shall first be article performed selection on not randomly to exceed selected 30 days. couplings The deflection each size and during shear tests course shall be performed production on using randomly first article selected selection couplings not to each exceed size 30 during days. production The deflection whenever and shear a change tests shall design be occurs performed not on to randomly exceed 120 selected days, couplings whichever is each shorter size during period. production PROPER whenever SAFETY a PRECAUTIONS change design SHALL occurs or BE not STRICTLY to exceed 120 OBSERVED days, whichever AT ALL is TIMES. shorter period. PROPER SAFETY PRECAUTIONS SHALL BE STRICTLY Deflection OBSERVED Test: AT ALL TIMES Deflection A Test: test apparatus such as one shown in Fig. 4 is suggested. Or testing apparati that provide restraint A to test apparatus assembly such shall as also be one permitted. shown in Close Fig. 4 is outboard suggested. ends Or testing pipe with apparati test that plugs. provide restraint to assembly shall also be permitted. Close outboard ends pipe with test plugs Fill assembly with water, expel all air, and hydrostatically pressurize to 4.3 psi (29.6 kpa) for duration Fill assembly test. One with pipe water, shall expel be rigidly all air, supported and hydrostatically and while pressurize assembly to is 4.3 under psi (29.6 pressure, kpa) for raise duration opposite end test. One or pipe shall pipe be 1/2 rigidly in. (12.7 supported mm) per and linear while foot assembly pipe. Maintain is under pressure, pressure raise for 5 minutes. opposite Any end leakage shall or mean pipe failure. 1/2 in. (12.7 mm) per linear foot pipe. Maintain pressure Shear for Test: 5 minutes. Any leakage shall mean failure Shear Test: Support two joined lengths randomly selected hubless cast iron soil pipe on blocks, a minimum /2 Support in. (38.1 two mm) joined high, lengths at three locations. randomly One selected length hubless shall be cast a minimum iron soil pipe 24 in. on blocks, (609.6 mm) a minimum length, 11/2 supported in. (38.1 on mm) blocks, high, one at three near locations. uncoupled One length end, and shall be or a minimum immediately 24 adjacent in. (609.6 to mm) couplings. length, supported Firmly restrain on blocks, this length one near in position uncoupled as shown end, in and Fig. 5. The or or immediately coupled length adjacent shall to be a couplings. minimum Firmly 5 ft restrain (1.52 m) this in length in and position supported as shown by a single Fig. block 5. The 6 in. or (152.4 coupled mm) from length shall end be a minimum pipe. 5 ft (1.52 m) in length and supported by a single block 6 in. (152.4 mm) from end pipe. 4 4 Size 12" and 15" SIX BANDS Figure 3

5 Fill assembly with water and expel all air. Apply a load 50 lb/in. nominal diameter at a point 6 in. (152.4 mm) from edge coupling upon a 12 in. (304.8 mm) length (3 by 3) angle iron or load distribution pad located on top pipe immediately adjacent to coupling pipe having one support only. Under this loading re shall be no visible leakage or displacement more than 3/8 in. (9.53 mm) from true alignment adjacent to coupling, when an internal pressure equivalent to a 10 ft (3.05 m) head water 4.3 psi (29.6 kpa) is applied. Maintain load and internal pressure for 15 minutes Unrestrained Hydrostatic Test: Assemble each coupling tested according to manufacturer's instruction between two sections machined steel pipe and conduct thrust test The assembly shall consist a maximum outside diameter pipe connected to a minimum outside diameter pipe with diameters as referenced in Table 6 and lengths as shown in Fig. 6. Machine plain ends pipe to be used for thrust test to correct diameters. Plain ends shall have in. (0.38 mm) deep grooves machined circumferentially around m at 1/8in. (3.18 mm) intervals down pipe section for a distance equal to that covered by elastomeric sealing sleeve coupling being tested. The tool used to machine grooves shall have a 60 inclined angle and cut into pipe from a perpendicular position. The surface between grooves shall be a la turned surface 125 RMS The plain ends pipe for thrust test shall be uncoated and cleaned with acetone and thoroughly dried before each assembly Test Method: Support pipe assemblies in a manner that does not restrain joint movement as shown in Fig Fill pipe assembly (as required in 3.1.3) with water, expelling all air. Increase hydrostatic pressure at a rate 1 psi (6.9 kpa) every 30 s until specified test pressure is reached. The specified test pressure shall be 20 psi (137.9 kpa) for 1 1/2 in. (38.1 mm) through 5 in. (127 mm), 18 psi (124.1 kpa) for 6 in. (152.4 mm), 10 psi (68.9 kpa) for 8 in. (203.2 mm), and 6 psi (41.4 kpa) for 10 in. (254 mm) pipe, 12 in. (305 mm), and 15 in. (380 mm). When specified test pressure is reached, hold it for 5 minutes. Any leakage or axial joint movement more than in. (3.81 mm) shall mean failure. 4 CERTIFICATION 4.1 Upon request purchaser, design pressional, or administrative authority having jurisdiction where products are being installed, shall be furnished certification documents by manufacturer, stating samples representing each lot have been tested and inspected by manufacturer for quality as indicated in this specification and requirements have been met. If requested by purchaser, design pressional, or administrative authority having jurisdiction where products are being installed, self-certification shall be accompanied by manufacturer quality control test reports as prepared in accordance with Sections 2 & 3 this specification. Self-certification shall include legal name and address each manufacturer. 4.2 Third Party certifiers or inspectors shall utilize procedures detailed in Annex A when conducting inspections at manufacturing locations. 5

6 TABLE 1. RUBBER SEALING SLEEVE (Dimensions in inches) 6

7 Note Dimensions found in se drawings are for informational purposes only. The dimensions found Note in table Dimensions are mandatory. found in Tolerances se drawings are found are for in informational Table 2a. The purposes center stop only. measurement dimensions shall A be and B 3/32 found (0.094 ) in table minimum, are mandatory. measured Dimensions at top D1 and center D2 stop. found This in measurement table are reference shall be for considered mold a design. non critical Tolerances dimension. are found The 5 in draft Fig. 2. on The center stop width is for manufacturing is (3/32).094 plus purposes 5 and draft it angle. shall be Sealing permissible ring to shape have and different dimensions or no draft are to angle manufacturer s on center design. stop. Sealing ring shape and dimensions are to manufacturer design. DIMENSIONS IN INCHES 1 1½ B Dimensional Tolerances to be RMA Class 3 (See Table 2A) 7

8 TABLE 2: REDUCING RUBBER SEALING SLEEVE (Dimensions in inches) *Note C dimension is a reference dimension only DIMENSIONS FOR REDUCING SEALING SLEEVES DIMENSIONS IN INCHES 2 x 1-1/2 3 x 2 4 x 3 A B C D D D Dimensional Tolerances to be RMA Class 3 (See Table 2A) 8

9 TABLE 2A. DIMENSIONAL TOLERANCES FOR RUBBER Standard Dimensional Tolerances RMA CLASS 3 Size (Inches) Closure (Plus or Minus) and over multiplied by These are commercial tolerances. All diametral dimensions shall have a tolerance +/- 1 percent. TABLE 3. RUBBER SEALING SLEEVE PHYSICAL REQUIREMENTS Material: Physical Tests: The sealing sleeve shall be made from an elastomeric compound that meets requirements ASTM C564. The sealing sleeve shall be tested in accordance with ASTM D3677 and be manufactured from a properly vulcanized virgin compound where primary elastomer is polychloroprene (neoprene). The test specimens shall be obtained from finished sealing sleeves and tested pursuant to methods described in following table. TESTS Test Physical Tests ASTM Min or Max Requirements Method Tensile Strength 1500 psi min. D412 Elongation 250 min. D412 Durometer (Shore A) 70 ± 76 F ± 5 F D2240 Accelerated Aging 15% max. tensile and 20% max. elongation D573 deterioration, 10 points max. increase in hardness, all determinations after oven aging for 96 hours at 158 F. Compression Set 25% max after 22 hours at 158 F. D395 Method B Oil Immersion 80% max. volume change after immersion in D471 ASTM oil IMR903 for 70 hours at 212 F. Ozone Cracking No visible cracking at 2 times magnification D1149 sealing sleeve after 100 hours exposure in 1.0 ppm ozone concentration at 100 F. Testing and inspection to be on sealing sleeve which is loop mounted to give approximately 20% elongation outer surface. Tear Resistance Die C; 150 lbs. Min. per inch thickness D624 Water Absorption 20% max. by weight after 7 days at 158 F. D471 9

10 TABLE 4. SHEILD AND CLAMP ASSEMBLY (Dimensions in inches) 10

11 Note: A single corrugation pattern is shown in drawing or corrugations unique to individual manufacturers are acceptable. The P dimension is allowed on eir end corrugated section. A P dimension is required on shield designs that have a single corrugated pattern. It shall be permitted for P dimension to not apply to all coupling designs. Measure corrugated material thickness and formed thickness with calipers or disc micrometer. Three random measurements shield thickness and corrugated height shall be taken and median used as value. Pipe Dimensions in Inches Size P *C L min W Min. X 7 Max. 1 ½ ± / ± / ± / ± / ± / ± / ± / ± / ± / ± / *Note C Dimension is a reference dimension only. MATERIAL SPECIFICATIONS Band Type 301 AISI Stainless Steel Minimum Tensile 140,000 PSI for 1 ½ to 15 ; Type 304 AISI Stainless Steel shall be permitted; Type 304 AISI Stainless Steel Minimum Tensile 140,000 PSI. Screw Housing Type 301 AISI Stainless Steel for 1 ½ to 15 ; Type 304 AISI Stainless Steel shall be permitted. Screw - Type 305 AISI and or Type 304L AISI Annealed Stainless Steel 5/16 Hex Head/Shoulder for 1 ½ 10 ; 3/8 Hex Head/Shoulder for 12 and 15 is required for couplings which require installed torque greater than 60 inch pounds. When or than 3/8 hex head screw is used on 12 and 15 couplings, coupling shall be labeled with required installation torque. Shield - Type 301 AISI and or Type 304 AISI Stainless Steel Bright Annealed Only (Annealed & Pickled Not Acceptable) Hardness Rockwell B-100 (Vickers 240) per ASTM A240/A240M Max. (Max. Burr Height Not to Exceed 25% Thickness) Eyelets/Rivets - Type 300 Series AISI Stainless Steel 11

12 Notes 1 Construction for sizes 1 ½ thru 10 shields have corrugations tapering in height from to at dimension Y. Y equals maximum 1 inch. (Type A Only) 2 Position clamps on shield as shown from inside end clamp. Shield overlap to be as shown or reversed on 5, 6, 8, 10, 12 and 15 only. 3 Location Specified marking Manufacturer s name, all stainless, country origin, trade name or mark. See Table 5 for details. 4 Location specified marking Size See Table 5 for details. 5 Securely fasten each clamp to shield, two places for sized 1 ½ to 4, three places for sizes 5, 6, 8, 10, 12, and Details detent on 5, 6, 8, and 10 bands are shown in Table 5A (optional for 12 and 15 ). 7 Max X is that dimension to which clamp must open and still maintain positive engagement screw in slots clamping band. Min. X is that dimension to which clamping band must close and still maintain positive engagement screw in slots clamping band. 12

13 FIG. 4 Deflection Test 13

14 FIG. 5 Shear Test TABLE 6 Dimensions and Tolerances for Hubless Pipe and Fittings Size, in. (mm) Outside Diameter, in. (mm) 11/2 (38) 1.90 ± 0.06 (48.26 ± 1.52) 2 (51) 2.35 ± 0.09 (59.69 ± 2.29) 3 (76.2) 3.35 ± 0.09 (85.09 ± 2.29) 4 (102) / 0.05 ( / 1.27) 5 (127) / 0.05 ( / 1.27) 6 (152) / 0.05 ( / 1.27) 8 (203) 8.38 ± 0.09 ( ± 2.29) 10 (254) ± 0.09 ( ± 2.29) 12 (305) ± 0.13 (317.5 ± 3.30) 15 (380) ± 0.13 (402.8 ± 3.30) 14

15 WATER INLET " [15.3] OR LESS 6 1. Pressure Regulator 2. Pressure Gauge (1 PSI Increments, 0-30 PSI) 3. Dial Indicator 4. Air Bleed Off Vent 5. PIPE 6. Coupling 7. Alignment Brackets 8. Clamp 9. Test Stand /8" Quick Disconnect Coupling 11. 3/8" Rubber Hose FIG. FIG. 6 Unrestrained Unrestrained Hydrostatic Hydrostatic Test Test Annex Annex A (Mandatory (Mandatory Information) Information) The The following following supplementary supplementary requirements requirements shall shall be be applied applied when when manufacturer manufacturer or or seller seller products products covered covered by by this this specification specification utilizes utilizes third third party party certification certification agencies agencies as as part part ir ir certifications certifications as as detailed detailed in in Section Section 4, 4, Certification Certification this this specification. specification. A1. A1. Third Third Party Party certification certification audit audit or or inspection inspection A1.1 A1.1 Third Third Party Party certifiers certifiers or or inspectors inspectors conducting conducting regular regular inspections inspections at at manufacturer s manufacturer s production production facility facility shall shall include include but but not not be be limited limited to to following following procedures procedures during during each each audit audit or or inspection inspection A1.1.1 A1.1.1 A review review manufacturer s manufacturer s records records to to verify verify compliance compliance with with Sections Sections 2 and and 3 this this standard. standard. Copies Copies manufacturer s manufacturer s quality quality control control test test reports reports shall shall be be added added to to third third party party certifier s certifier s audit audit or or inspection inspection reports. reports. A1.1.2 A1.1.2 Random Random inspection inspection manufacturer s manufacturer s finished finished goods goods inventory inventory shall shall be be conducted conducted during during each each audit audit or or inspection. inspection. These These audits audits or or inspections inspections shall shall include include a dimensional dimensional and marking inspection not less than 10 randomly 15 selected couplings different sizes and types. Each sealing sleeve used as part a coupling shall 15be subject to requirements appropriate coupling standard. 15

16 APPENDIX The following non-mandatory appendix includes installation suggestions for proper installation hubless cast iron soil pipe and fittings joined by couplings included in this CISPI 310 designation. These suggested instructions shall not be considered a mandatory part this designation. NON-MANDATORY APPENDIX 16 17

17 INSTALLATION PROCEDURES FOR HUBLESS CAST IRON SOIL PIPE AND FITTINGS FOR SANITARY AND STORM DRAIN, WASTE AND VENT PIPING APPLICATIONS 1. Introduction 1.1 Several different types hubless couplings are available for use in hubless cast iron sanitary and storm drain, waste, and vent piping applications to connect hubless cast iron soil pipe and fittings by using a sleeve-type, or some or type coupling device. It is purpose this portion designation CISPI to furnish procedures as to installation couplings, which are manufactured in accordance with CISPI Designation when applied to cast iron soil pipe and fittings manufactured in accordance with CISPI Standard 301, latest revisions. It must be noted that se installation procedures are not intended to be applicable for couplings not made in accordance with CISPI THE INSTALLATION PROCEDURES STATED BELOW ARE ILLUSTRATIVE ONLY AND ARE NOT A MANDATORY PORTION OF CISPI DESIGNATION Purposes 2.1 These installation procedures provide guidelines for installation, use and inspection hubless cast iron soil pipe and fittings for sanitary and storm drain, waste, and vent piping applications when coupling device described in Designation is used. 2.2 All construction projects involve many variables, hence it is not possible to state in advance every installation consideration which may apply in field. In end, final and controlling judgment decisions concerning installation questions that arise must be made in design and on job taking into account prevailing circumstances or conditions. The Institute cannot assume such responsibilities. These procedures are not a substitute for such informed judgments and for manufacturerprovided installation instructions but it is hoped y will be helpful. 2.3 Complete stability all components hubless cast iron soil pipe and fittings for sanitary and storm drain, waste, and vent piping applications should be given prime consideration. 3. Methods Cutting Cast Iron Soil Pipe There are several methods successfully cutting cast iron soil pipe. These methods may be placed into two basic categories; those that require external power for ir operation and those methods that require only hand operation. Methods that require external power are usually used for prefabrication work or high volume cutting operations. Examples this type equipment would be: (1) abrasive saw (chop SAW), (2) power hack saw, and (3) an electrically actuated hydraulic snap cutter. Before using electrical equipment this nature, manufacturer s operating instructions should be carefully reviewed for safe use equipment. There are two hand operated cutting tools that are used in industry today: (1) standard steel pipe cutter using cutting wheels specifically designed to cut cast iron soil pipe, and (2) snap cutter. The snap cutter accounts for majority all cuts made on cast iron soil pipe in field. 17

18 There are several types snap cutters available, following procedure has been found to produce consistently good cuts: 1) After marking pipe length to be cut, position chain cutter squarely around pipe to ensure a straight cut. The maximum number wheels possible should be in contact with pipe. 2) Score pipe by applying pressure on handles to make cutter wheels indent pipe. 3) Rotate pipe a few degrees and n apply quick final pressure to complete cut. If a piece pipe is unusually tough, score pipe several times before making your final cut. Scoring pipe before actual cut is key to a clean straight cut. Cast iron soil pipe may also be cut with a hammer and a cold chisel. This method cutting is very time consuming and should only be used if snap cutters are not available. Again, protective equipment, such as safety goggles, should be used. The procedure for cutting soil pipe with a hammer and chisel are as follows: 1) Measure length to be cut and mark cut line completely around circumference pipe. 2) Place mark to be cut on a 2 by 4 so edge 2 by 4 is directly under mark. 3) By striking chisel with hammer, cut a groove following your mark all way around circumference pipe. 4) Continue cutting as outlined above in (3) until pipe is cut. This procedure may take several revolutions pipe before it is cut. Installers should be aware safety considerations, including need to use protective equipment, such as safety goggles, when cutting cast iron soil pipe. 4 Definitions 4.1 Joint A place where two ends pipe or fittings are connected. 4.2 Coupling A mechanical device by which ends pipe or fittings are connected. 4.3 Hanger A device by which or to which something is hung or hangs. 4.4 Support To hold up or to serve as a foundation or prop. 4.5 Restrain To limit, restrict or keep under control. 4.6 Restraint A device that restricts movement. 4.7 Seismic Shock, earthquake, to shake. 4.8 Torque A force that produces or tends to produce rotation or torsion: A turning or twisting force. 4.9 Alternately A change from one to anor repeatedly. 5 Clamp and Sealing Sleeve Installation Hubless cast iron soil pipe is joined by using hubless coupling. Several different types hubless couplings are available. The following will outline installation procedures hubless couplings that meet requirements CISPI It must be noted that se installation procedures 18

19 are not intended to be applicable for couplings or than those manufactured in accordance with CISPI Installation procedures from manufacturer shall be followed for best performance. These couplings are manufactured using a stainless steel shield and clamp assembly and an elastomeric sealing sleeve conforming to requirements Specification C564. The following steps should be taken to ensure a proper joint. 1) Place sealing sleeve on end one pipe or fitting and stainless steel clamp and shield assembly on end or pipe or fitting. 2) Firmly seat pipe or fitting ends against integrally molded center stop inside elastomeric sealing sleeve. 3) Slide stainless steel shield and clamp assembly into position centered over sealing sleeve and tighten bands. The bands should always be tightened using a properly calibrated torque wrench set at 60 lbf-in. or specific torque required by manufacturer couplings, which require a higher torque. For larger diameter couplings that have four bands, inner bands should be tightened first and n outer bands tightened. In all cases, when tightening bands y should be tightened alternately to ensure that coupling shield is drawn up uniformly. (A) TYPICAL HUBLESS COUPLING HUBLESS PIPE SEALING SLEEVE STAINLESS STEEL SHIELD STAINLESS STEEL RETAINING CLAMP HUBLESS PIPE 6. SUGGESTED INSTALLATION INSTRUCTIONS UNDERGROUND INSTALLATION PROCEDURES The physical properties cast iron soil pipe make it a good choice for DWV (Drain, Waste and Vent) material for underground installation. The two keys for proper underground installation are trench preparation and backfilling. 19

20 The trench should be wide enough to assemble joints. Total load on pipe includes both earth load and truck load. For additional information refer to CISPI s Trenching Recommendations for Cast Iron Soil Pipe brochure or CISPI handbook. Safety procedures in trenching should be observed, including provisions to avoid collapse trench wall. The trench bottom should be stable enough to support complete barrel pipe. If possible barrel should rest on even and undisturbed soil. In certain conditions, that is, rocky, it becomes necessary to excavate deeper than needed, place and tamp back fill material to provide an appropriate bed. Holes should be provided at each joint for hub or couplings to allow for continuous support barrel along trench bottom. If ditch must be excavated deeper than depth drainage pipe, place and tamp backfill material to provide uniform support for pipe barrel. Many times in installation underground soil pipe it is necessary to change direction line. Cast iron soil pipe will allow this through deflection in joints. Installation should initially be completed in a straight line and n deflected to appropriate amount. Maximum deflections should not exceed 1/ 2 in. per foot pipe. This would allow 5 in. deflection for a 10-ft piece soil pipe. For changes in direction greater than se deflections an appropriate fitting should be used. 1 The use adhesive lubricants is permissible as recommended by manufacturer. When adhesive lubricants are used wait 24 hours before testing. The use adhesive lubricant does not take place proper joint restraint. Once installation (for joining methods refer to Part 5) is completed, underground section is ready for test. Because this portion system is usually largest diameter pipe it may be necessary to restrain system or joints from movement prior to testing. This may be done by partially backfilling and leaving joints exposed for inspection, or rodding or bracing, or both. After testing is completed, trench can be properly backfilled. When backfilling, care should be taken to protect pipe from large rocks, stones, or frozen fill material etc., that could damage pipe. Cast iron soil pipe laid on a solid trench bottom requires no tedious placement selected backfill materials. Installers should always consider local conditions, codes, manufacturer instructions, and architect/engineer instructions in any installation. 20

21 ABOVEGROUND INSTALLATION PROCEDURES With attention to a few basic rules installation cast iron soil pipe and fittings is easily accomplished. 1) Cast iron soil pipe installed in horizontal position shall be supported at every coupling. The hanger shall be placed within 18 in. coupling. Joints used for connecting cast iron soil pipe possess sufficient shear strength to require one hanger per joint. For 12 in. and 15 in. hubless pipe, hangers shall be placed on both sides coupling when installing full 10-ft lengths. 2) Installations requiring multiple joints within a four foot developed length shall be supported at every or or alternating couplings. Vertical components shall be secured at each stack base and at sufficiently close intervals to keep system in alignment and to adequately support pipe and its contents. Riser clamps, sometimes called floor or friction clamps are required for vertical piping in multi-story structures in order for each floor not to exceed 15 ft. 21

22 r strapping a closet bend under a sub-floor and how a clevis type hanger has been used. hubless blind plug is used for a required cleanout, complete coupling and plug accessible for removal and replacement. ection closet rings, floor and shower drains and similar slip-over fittings, and Large Diameter Fittings n hubless pipe and fittings to soil pipe hubs may be accomplished by use ead and oakum or compression joints. Horizontal pipe and fittings five (5) (5) in. in. and and larger shall shall be be suitably restrained braced to prevent horizontal 54 INSTALLATION movement. This shall be done at every branch opening or change direction by use braces, blocks, rodding or or suitable method, to prevent movement. Closet bends, traps, trap-arms and similar branches must be secured against movement in any direction. Closet bends installed above ground shall be stabilized by firmly strapping and blocking. Where vertical closet stubs are used y must be stabilized against horizontal or vertical movements. Figure 10 Bracing Large-Diameter Pipe (continued). INSTALLATION Figure 11 Cross-Section View Closet Bend Showing Flange Properly Secured. Figure 10 Bracing Large-Diameter Pipe (continued on facing re 10 Bracing Large-Diameter Pipe (continued). Figure 12 Method Using Hanger for Closet Bend. 22 Figure 10 Bracing Large-Diameter Pipe (continued on facing page).

23 INSTALLATION 55 INSTALLATION 55 Vertical Piping INSTALLATION 55 Vertical Piping Vertical components should be secured at each stack base and at sufficiently close intervals to keep GENERAL Vertical Piping INSTALLATION INSTRUCTIONS Vertical system in components alignment should and to be adequately secured at support each stack weight base and at sufficiently pipe and its close contents. intervals Floor to keep clamps, A. system sometimes Vertical in alignment Piping: called friction and to clamps, adequately are required support for vertical weight piping pipe in multistory and its contents. structures Floor so that clamps, each Vertical components should be secured at each stack base and at sufficiently close intervals to keep sometimes floor carries called its share friction clamps, load. are Figures required 13 and for 14 vertical show piping some typical in multistory brackets structures or braces so for that vertical system in alignment and to adequately support weight pipe and its contents. Floor clamps, each floor piping. 1) sometimes carries Secure Figure called its vertical 15 share shows friction piping a method clamps, load. at sufficiently Figures clamping are required 13 close and for 14 intervals pipe vertical show at each some to keep floor piping typical using in multistory brackets pipe a friction in alignment structures or braces or floor so for and clamp. that vertical to support each piping. If floor carries Figure vertical weight its 15 piping share shows is a to pipe method stand and free load. its Figures clamping contents. any support, 13 and Support 14 pipe show at if each no stacks structural some floor at typical using ir element brackets a bases friction is available and or or braces floor at sufficient for for clamp. support floor vertical and stability piping. If intervals vertical during Figure 15 piping to meet construction, shows is to a method stand requirements free secure clamping any support, piping local codes. in pipe or its if at no proper Approved each structural position metal floor using element by clamps means a friction is available or adequate hangers or floor for clamp. support should metal be and stakes stability used or braces for If vertical during this fastened purpose. piping construction, to pipe. is to stand free secure any piping support, in or its if proper no structural position element by means is available adequate for support metal stakes 2) If and stability or vertical braces during fastened piping is construction, to to stand pipe. free any support or if no structural element is available for support and stability during construction, secure secure piping in piping its proper in its position proper by position means by means adequate metal adequate stakes stakes or braces or braces fastened fastened to to pipe. pipe. Figure 13 Bracket for Vertical Pipe. Figure 13 Bracket for Vertical Pipe. Figure 13 Bracket for Vertical Pipe. Figure 14 One Hole Strap for Vertical Pipe. Figure 14 One Hole Strap for Vertical Pipe. Figure 14 One Hole Strap for Vertical Pipe. Figure 15 Method Clamping Pipe at Each Floor, Figure 15 Method Using a Friction Clamping Clampor Floor Pipe Clamp. at Each Floor, Figure 15 Method Using a Friction Clamping Clampor Floor Pipe Clamp. at Each Floor, Using a Friction Clampor Floor Clamp. 23

24 B. Horizontal Piping, Suspended : 1) Support horizontal piping and fittings at sufficiently close intervals to maintain alignment and prevent sagging or grade reversal. Support each length pipe by an approved hanger located not more than 18 in. from joint. For 12 in. and 15 in. hubless pipe, hangers shall be placed on both sides coupling when installing full 10-ft lengths. 2) Support terminal ends all horizontal runs or branches and each change direction or alignment with an approved hanger. 3) Closet bends installed above ground should be firmly secured. C. Horizontal Piping, Underground : 1) To maintain proper alignment during backfilling, stabilize pipe in proper position by partial backfilling and cradling. 2) Piping laid on grade should be adequately secured to prevent misalignment when slab is poured. 3) Closet bends installed under slabs should be adequately secured. D. Installation Inside Building: 1) Installation Suggestions According to most authorities and plumbing codes, it is sufficient to support horizontal pipe at each joint, that is, 5-ft pipe should be supported at 5-ft intervals, 10-ft in length may be supported at 10-ft intervals. Supports should be adequate to maintain alignment and prevent sagging and should be placed within 18 in. joint. NOTE: For 12 in. and 15 in. hubless pipe, hangers shall be placed on both sides coupling when installing full 10-ft lengths. When system is filled with water, sufficient beam strength is provided by cast iron soil pipe to carry load with hangers every ten feet. Any horizontal supports or clamps illustrated in Figures 1 and 2 may be used, depending on conditions or what is regarded as essential by contractor, architect or engineer. Whatever method support or clamp is used for horizontal line, care should be exercised to make certain that line has a proper grade (1/4 in. or more per foot). 24

25 Hangers may be fastened to wood members or beams with wood screws, lag screws or large nails. For fastening to I beams, bar joists, junior beams or or structural members, beam clamps or C clamps may be used. Fasteners for masonry walls may be expansion bolts or screws, or where a void is present, toggle bolt may be used. Studs shot into masonry by explosion method may also be used. Along a wall, a bracket made structural members or a cast bracket may be used. Adequate provision should be made to prevent shear. Where components are suspended in excess eighteen (18) in. by means non-rigid hangers y should be suitably braced against movement horizontally, ten called sway bracing. Examples sway bracing are illustrated in Figures 3 and 4. Horizontal Installation Large Diameter Pipe: Horizontal pipe and fittings five (5) (5) in. in. and and larger must must be be suitably restrained braced to prevent horizontal movement. This must be done at every branch opening or change direction by use braces, blocks, rodding or or suitable method, to prevent movement or joint separation. Figure 5 illustrates several methods bracing. restraint. 25

26 Suggested Installation Horizontal Fittings: Suggested Installation Horizontal Fittings: a) Hangers a) Hangers should be should provided be as provided necessary to as provide necessary alignment to provide and grade. alignment Hangers should and grade. be Hang provided provided at each horizontal at each branch horizontal connection. branch Hangers connection. should be Hangers adequate should to maintain be alignment adequate to main and prevent sagging and should be placed adjacent to coupling. By placing hangers properly, and prevent proper grade sagging will be and maintained. should Adequate be placed provision adjacent should to be made coupling. to prevent By placin shear. Where properly, pipe and fittings proper are grade suspended will in be excess maintained. eighteen Adequate inches by means provision non-rigid should be ma hangers shear. y should Where be suitably pipe and braced fittings against are movement suspended horizontally, in excess ten called eighteen sway bracing. inches by mean Refer to hangers Figures 3 y and 4 should for illustrations. be suitably braced against movement horizontally, ten called b) Closet bends, Refer traps, to Figures trap-arms 3 and similar 4 for illustrations. branches must be firmly secured against movement in any direction. Closet bends installed above ground should be stabilized. Where vertical closet studs b) are Closet used y bends, must be traps, stabilized trap-arms against and horizontal similar or vertical branches movement. must be In Figures firmly 6 secured and 7, against see illustration any direction. for strapping Closet a closet bends under installed a sub-floor above and ground how a clevis should type hanger be stabilized. has been Where used to an studs advantage. are used y must be stabilized against horizontal or vertical movement. In Fi c) When a hubless see illustration blind plug for is used strapping for a required a closet cleanout, bend under complete a sub-floor coupling and plug how must a clevis be type ha accessible used for removal to an advantage. and replacement. d) The connection closet rings, floor and shower drains and similar slip-over fittings and connection c) When hubless a hubless pipe blind and fittings plug is to used soil pipe for a hubs required may be cleanout, accomplished complete by use coupling and caulked lead accessible and oakum for or removal compression and joints. replacement. d) The connection closet rings, 26 floor and shower drains and similar slip-over fi connection hubless pipe and fittings to soil pipe hubs may be accomplished

27 27

28 Seismic Restraints: The following recommendations are some factors to consider when installing cast iron pipe in seismically active areas. All installations must comply with local codes and instructions architects or engineers who are responsible for piping design. A. Brace all pipe 2 in. and larger. Exceptions: Seismic braces may be omitted when top pipe is suspended 12 in. or less from supporting structure member and pipe is suspended by an individual hanger. 28

29 B. Vertical Piping Attachment Vertical piping shall be secured at sufficiently close intervals to keep pipe in alignment and carry weight pipe and contents. Stacks shall be supported at ir bases and if over two stories in height at each floor by approved floor clamps. At vertical pipe risers, whenever possible, support weight riser at a point or points above center gravity riser. Provide lateral guides at top and bottom riser, and at intermediate points not to exceed 30 ft-0 in. on center. C. Horizontal Piping Supports Horizontal piping shall be supported at sufficiently close intervals to prevent sagging. Trapeze hangers may be used. Pipe, where top pipe is 12 in. or more from supporting structure shall be braced on each side a change direction 90 or more. D. Traverse Bracing 40 ft-0 in. o.c. maximum spacing unless orwise noted. One pipe section may act as longitudinal bracing for pipe section connected perpendicular to it, if bracing is installed with 24 in. elbow or tee similar size. E. Longitudinal Bracing 80 ft-0 in. o.c. maximum spacing unless orwise noted. F. Miscellaneous Provide large enough pipe sleeves through walls or floors to allow for anticipated differential movements. WHERE MULTIPLE SHIELD AND CLAMP JOINTS OCCUR IN A CLOSELY SPACED ASSEMBLY (THAT IS, FITTING FITTING-FITTING, ETC.) A 16 GAUGE HALF SLEEVE MAY BE INSTALLED UNDER THE ASSEMBLY WITH A PIPE HANGER AT EACH END OF THE SLEEVE. 29

30 Vertical Piping: Vertical components should be secured at each stack base and at sufficiently close intervals to keep system in alignment and to adequately support weight pipe and its contents. Floor clamps, sometimes called friction clamps, are required for vertical piping in multi-story structures in order for each floor to carry its share load. Figures 9 and 10 show some typical brackets or braces for vertical piping. Figure 11 shows a method clamping pipe at each floor, using a friction or floor clamp. If vertical piping is to stand free any support or if no structural element is available for support and stability during construction, secure piping in its proper position by means adequate metal stakes or braces fastened to pipe. 30

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32 Testing and Inspection Once roughing-in is completed on a cast iron piping project, it is important to test and inspect all piping for leaks. The installer usually is required to notify plumbing inspector administrative authority having jurisdiction over plumbing work before tests are made. Concealed work should remain uncovered until required tests are made and approved. When testing, system should be properly restrained at all bends, changes direction, and ends runs. There are various types tests used for installed cast iron soil pipe and fittings. These are water or hydrostatic, air, smoke and peppermint. Proper safety procedures and protective equipment should be employed during all testing procedures. Installers should always consider local conditions, codes, manufacturer installation instructions, and architect/engineer instructions in any installation. A water test, also called a hydrostatic test, is made all parts drainage system before pipe is concealed or fixtures are in place. This test is most representative operating conditions system. Tests this type may be made in sections on large projects. After all air is expelled, all parts system are subjected to 10-ft hydrostatic pressure (4.3 psi) and checked for leaks. Test Procedures: Water Test - A water or hydrostatic test is most common all tests used to inspect a completed cast iron soil pipe installation. The purpose test is to locate any leaks at joints and correct se prior to putting system in service. Since it is important to be able to visually inspect joints, water tests should be conducted prior to closing in piping or back fill underground piping. As water fills a vertical cylinder or vertical pipe it creates hydrostatic pressure. The pressure increases as height water in vertical pipe increases. The Cast Iron Soil Pipe Institute recommends 10-ft hydrostatic pressure (4.3 psi). This is recommended test by most plumbing codes. To isolate each floor or section being tested, test plugs are inserted through test tees installed in stacks. All or openings should be plugged or capped with test plugs or test caps (see Figure 12). Prior to beginning test, all bends, changes direction and ends runs should be properly restrained. During test, thrust forces are exerted at se locations. Thrust is equal to hydrostatic pressure multiplied by area. Thrust pressures, if not restrained, will result in joint movement or separation causing failure test. All air entrapped in system should be expelled prior to beginning tests. Once stack is filled to ten feet, an inspector makes a visual inspection section being tested to check for joint leaks. In most cases, where se leaks are found, hubless couplings have not been torqued to recommended 60 lbf-in. or for couplings requiring higher torque improper torquing occurred. Proper torquing will correct problem. Fifteen minutes is a suitable time for water test. Once system has been successfully tested it should be drained and next section should be prepared for test. Thrust Forces: Thrust or displacement forces are encountered as pipe or cylinder is filled with water. The higher fill greater force acting to separate a joint. The Thrust Table shows pounds force tending to cause joint separation when using pipe from 1 ½ to 15 and a head water from 10 to

33 THURST TABLE Thrust or Displacement Forces Encountered in Hydrostatic Testing Hubless Cast Iron Soil Pipe Pipe 11/ Size, in. HEAD, feet Press ure, Thrust, lb Thrust, lb Thrust, lb Thrust, lb Thrust, lb Thrust, lb Thrust, lb Thrust, lb Thrust, lb Thrust, lb water psi Area, OD in A Thrust = Pressure Area. 33

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35 Typical power operated torque tools used for coupling assembly

36 NOTES