IS 2556( Part 8 ) :2004 Vi'wfh/m wkl-TTFma-Twm ('mwimr@)-mlFk ( Gmi $T?m ) Indian Standard VITREOUS SANITARY APPLIANCES (VITREOUS CHINA) -- SPECIFICATION PART 8 SPECIFIC REQUIREMENTS OF PEDESTAL WATER CLOSE COUPLED WASHDOWN AND SYPHONIC CLOSETS ('FijM Revision) Ics 91.140.70 @ BIS 2004 BUR MANAK E-AU OF INDIAN STANDARDS ZAFAR MARG BHAVAN, 9 BAHADUR SHAH NEW DELHI 110002 September 2004 Price Group 4 Sanitary Appliances and Water Fittings Sectional Committee, CED 3 FORE WORD This Indian Standard (Part 8) (Fiflh Revision) was adopted by the Bureau of Indian Standards, after the draft finalized by the Sanitary Appliances and Water Fittings Sectional Committee had been approved by the Civil Engineering Division Council. This standard was first published on 1963. The first, second, third and fourth revisions were issued in 1967, 1973, 1981 and 1995 respectively. In this revision, load bearing, saw dust and splash test have been included. Other changes keeping in view the current manufacturing practices in the country have been made. For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with 1S2:1960 `Rules for rounding off numerical values (revised)'. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard. IS 2556 (Part 8) :2004 Indian Standard VITREOUS SANITARY APPLIANCES (VITREOUS CHINA) -- SPECIFICATION PART 8 SPECIFIC REQUIREMENTS OF PEDESTAL WATER CLOSE COUPLED WASHDOWN AND SYPHONIC CLOSETS (Fijith Revision) 1 SCOPE This standard (Part 8) lays down the requirements for patterns, construction, dimensions and tolerances, tin ish, inspection and marking of pedestal water closets with close-coupled cisterns, both syphonic and washdown type including water saving types made of vitreous china. 2 REFERENCES The Indian Standards given below contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreement based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards given below: IS No. 774: 1984 Title be one of the following patterns: a) Pattern 1 -- Double trap syphonic pattern with `S' trap or `P' trap (see Fig. 1A and Fig. lB) b) Pattern 2 -- Single trap syphonic pattern with `S' trap or `P' trap (see Fig. 1A and Fig. 1B) c) Pattern 3 -- Washdown pattern with `P' trap or `S' trap (see Fig. 2A and Fig. 2B) or concealed `S' trap (see Fig. 3A and Fig. 3B) with d) Pattern 4 -- Washdown pattern horizontal outlet (see Fig. 4A and Fig. 4B) 4.1.1 The closets may also be made in other patterns where so agreed to between the manufacturer and the purchaser. However, except for fictional dimensions, all other requirements as laid down in this standard shall be complied with. 4.2 The outline of the appliances represented by the figures is given for a better comprehension of the designs. The water surface area and trap ways for syphonic type closets (see Fig. 1A ) are not shown on the figure and it is left to the discretion of the manufacturer to design the water surface area and trap ways suitably so that the flushing requirements and the minimum 50 mm depth of water seal be maintained. 4.3 The closet for water' saving system shall be of wash-down pattern with `P' trap or `S' trap or concealed `S' trap as per Fig. 2 and Fig. 3. The water surface area shall not be less than 100 mm x 90 mm and trap ways shall be suitably designed to meet the flushing requirements and the minimum specified depth of water seal. 5 CONSTRUCTION 5.1 Water closets, shall be of one piece construction. Each water closet shall be provided with not less than that two floor fixing holes having a minimum diameter of 6.5 mm. Alternatively, suitable provisions for fixing to the floor shall be made. Each water closet shall have an integral flushing rim of suitable type. The flushing rim and the inlet shall be of self-draining type andweep1 Specification for flushing cistern for water closets and urinals (other than plastic cistern) (@h revision) Vitreous sanitary appliances (vitreous china) -- Specification 994 995 General revision) 2556 (Part 1): (Part 7): 7231 requirements (third Specification for sanitary appliances (~hird revision) : 199~ Specification for plastic flushing cistern for water closets and urinals" (second revision) 9140: 1996 Method of sampling of vitreous and fire clay sanita~ appliances (second revision) . 3 GENERAL REQUIREMENTS The general requirements relating to terminology, materials, manufacture, glazing, defects, minimum thickness, performance and methods of tests covered ill IS 2556 (Part 1) shall be complied with. 4 PATTERNS 4.1 The pedestal closet with close-coupled cisterns shall IS 2556 (Part 8) :2004 T H J--. ~ L 1B Connecting All dimensions in millimetres. 1A Functional Dimensions Dimensions -- SINGLE ORDOUBLE TRAPPATIERN FIG. 1 SYPHONIC WATERCLOSET D4 D3.@ l--% I n o T Ii D2 t --1 WQ 14 --. A 2A Functional Dimensions All dimensions in miilimetres. WATERCLOSET FORCLOSE COUPLED SUITE, P ORS-TRAP FIG. 2 WASHOOWN 2 2B Connecting Dimensions IS 2556 (Part 8) :2004 -PtD3 n o x, n I o T H -----L. TJ k..ii J' `~ k""d;'~ L J 3B Connecting AHdimensions in millimetres. 3A Functional Dimensions Dimensions FIG. 3 WASHOOWN WATERCLOSET FORCLOSE COUPLED SUITE -- CONCEALED S-TRAP hole shall be provided at the flushing inlet of the water closet. 5.2 Each water closet shall have an integral trap with either `S or `P' outlet conforming to Fig. 1 or Fig. 2 or concealed `S trap conforming to Fig. 3 or horizontal outlet conforming to Fig. 4 as specified. 5.3 Suitable provision shall be made for connecting a flushing cistern at the back of the closet and on top of the inlet using a suitable (resilient) gasket to make the system leak proof. To ensure the stability of the seat with its cover in the upright position, it is recommended that the cistern and its lid be entirely below plane au' passing through the centre of the fixing holes of the seat and making an angle of not less than 8° with the vertical axes of the holes (see Fig. 5). 5.4 Special connectors are required to connect the horizontal outlet of Pattern 4 water closet, to the drainage system. These shall be supplied by the manufacturer of water closet. The straight part of the outlet for Pattern 4 water closet (see Fig. 4B) shall be without grooves. 3 6 DIMENSIONS AND TOLERANCES 6.1 The functional dimensions (dimensions other than connecting dimension) and connecting dimensions (critical for plumbing requirements), shall be as given in Table 1 and Table 2 respectively. 6.2 Tolerances Where tolerances are not given for specific dimensions, these shall be as laid down in IS 2556 (Part 1). 7 FINISH Inside surface of water closet and trap shall be glazed uniform and smooth in order to ensure an efficient flush. In case of Pattern 4 the outlet shall not have any groove serration and outside of the outlet shall be glazed. 8 FLUSHING CISTERNS FOR WATER CLOSETS The flushing cistern shall be of low level coupled type and shall conform to the requirements specified in IS 774 or IS 7231 except that it will be permissible to have the inlet and the overflow from the bottom of the IS 2556 (Part 8) :2004 I c n o w, 1'f Iz=k='tl An `[ iT"-Itt3Y L-----' p---A `1--" u Dimensions All dimensions in millimetres. OUTLET WC FORCLOSE COUPLED SUITE FIG. 4 HORIZONTAL I 4B Connecting Dimensions 1 4A Functional ANGLE FIG. 5 SEATFIXING 4 IS 2556 (Part 8): 2004 Table 1 Functional Dimensions (Clause 6.1) All dimensions in millimetres. -". S1No. Description Kel us Figures ~yphonic P or S Outlet (Fig. 1A) (4) land2 390+ 10 360+10 50 Min Washdown P or S Outlet (Fig. 2A and Fig. 3A) (5) 3 390+ 10 360+ 10 50 A4in 150 A4in llOMin Washdown Horizontal Outlet (Fig. 4A) (6) (1) D ii) iii) iv) v) (2) Pattern No. Height Width Depth of water seal Water sorface dimension; a) Back to front b) Side to side Distance from centre line of seal bolt holes to front of WC Length of opening Width of opening Distance between a vertical line from tip of back plate to inside face of flush rim at back Distance from centre of seat bolt hole to inside face to flush ram at back Tra~ inlet depth (3) -- 4 390* 10 360+ 10 50 Min H w D, 150 Min l10A4in 415t0445 vi) 415t0445 415 to 445 vii) viii) ix) P 290 Min 240 Min 290 Min 290 Min Q D, 240 Min 70 Max 240 Min 70 Max x) D, 80 Max 80 Max 80 Max T 75 Min 75 Min cistern, where required and no separate flush pipe is necessary. Discharge rate test shall not be applicable for all patterns covered in this standard. 9 FLUSHING TEST The water closet shall satisfy the requirements of tests give in 9.1, 9.2, 9.3, 9.4, 9.5 and 9.6 when fixed to flushing cistern in the normal working position. These tests shall be conducted by connecting the water closet to a low-level coupled cistern conforming to IS 774 or 1S 7231. These tests shall be carried out by using the flushing cistern of the capacity for which the appliance is to be used. 9.1 Toilet Paper Test The closet shall be filled with water to its normal water seal level and charged with six pieces of usual toilet paper or polyethylene sheet of 0.05 mm thickness approximately 150 mm x 115 mm in size and loosely crumbled. It shall then be flushed. This test shall be repeated four times and the pan shall discharge the full charge of paper at least thrice out of four times. 9.2 Smudge Test The whole of the interior surface of the closet to 5 40 mm below the flushing rim shall be smudged with quartz powder of contrasting colour passing through 1.18 mm IS sieve and shall then be flushed, carefully observing the surface or the closet during the flushing. Immediately after the flushing, there shall be no smudge left on the bowl. 9.3 Holding Capacity Test The closet when sealed at the bottom of the trap in line with the back plate, shall be capable of holding not less than 101 of water between the normal water level and the highest possible Wter level of the closet as installed. 9.4 Ball Test 9.4.1 Single Ball Test The ball shall be made of non-absorbent material. The relative density of the ball shall be between 1.075 and 1.080. The diameter of the ball shall be 43 * 0.5 mm. Place the ball into the closet to be tested and then flush the closet. The ball shall be discharged in the normal manner. 9.4.2 Fiji Ball Test Fifty balls of non-absorbent material, having a mass IS `2556 (Part 8) :2004 Table 2 Connecting Dimensions (Clause 6.1) All dimensions in millimetres. SI No. Description Ref in Figures Syphonic, P or S Outlet Washdown P or S Outlet (Fig. 2B) (5) 80 Min Washdown Washdown, Concealed S-trap Horizontal (Fig. 4B) - "" (k `-" `-' uunet lg. 4B) (6) 80 Min (7) 80 Min (1) (2) Internaldiameter of outlet]) External diameter of outletlJ Height of centre line of outlet from floor level for P-trap only Distance from end of trap to floor for S-trap only Length of grooved part of outlet Distance between centre of seat bolt holes Diameter of seat bolt holes Distance between back of cistern and outside of the outlet for P-trap or centre Iine of outlet of S-trap Radius of free space (to be measured from the centre of the outlet, distance being 40 mm, &finfrom the end of the outlet) Angle of outlet Length of straight part of outlet glazed and without groove Distance between end of outlet and floor Length of extended outlet into the floor Length of outlet with groove (3) (4) 80 &fin 102+5 180+ 10 20+5 O ii) iii) d, d, h, hz 1 n d, g, t?, d, T 102*5 180+10 20+5 102+5 180+ 10 102+5 180+ 10 -- iv) v) vi) 40 Min 160to 175 15+2 70 Min 85 Min 40 Min 160to 175 15+2 70 Min 85 Min -- 160to 175 15+2 -- 85 Min 160to 175 15+2 70 Min vii) viii) -- ix) 75 75 75 75 x) xi) e I, x x, Y 104° 104" -- -- 900 40 Min xii) -- -- -- 40 Min 10 Min xiii) -- 32*5 xiv) -- 40 Min I)oval ity permissible within the dimensions allowed for the internal and external diameters. each of 3.7 + 0.1 g, and a diameter of 20 + 0.1 mm shall be dropped into the water closet bowl and flushed. Repeat the test five times. A minimum of 85 percent of all balls should be flushed out in the five tests. 9.5 Saw Dust Test 9.5.1 Spectjlcation of the Saw Dust dry saw dust of above specification on the inside of the WC between the normal water level and the flushing rim as completely and evenly as possible. Then flush the WC. The sprinkled saw dust should be cleaned below 40 mm of rim of WC. 9.6 Splash Test 9.6.1 Procedure Set up the WC, cistern of flush valve and flush pipe (if required) as specified by the manufacturer. Charge the WC with coloured water to its design water seal level. Ensure that the floor area is cleaned and dry where the splash tests to be carried out. Activate the flush valve 6 20 g of dry saw dust test sifted through 2 mm sieve. 9.5.2 Procedure Set up the WC, cistern of flush valve and flush pipe (if required) as specified by the manufacturer. Charge the WC with coloured water to its designed water seal level. Fully wet the entire internal surface of the WC below the rim. Sprinkle 20 g of fine IS 2556 (Part 8) :2004 or cistern to discharge the WC. Observe and record whether flushing water splashed over rim onto the floor. Isolated droplets up to 10 Nos. shall not be the cause for rejection. 10 LOAD BEARING TEST inspection and lot inspection shall be as given in IS 9140. 12 MARKING 12.1 Each water closet shall be clearly and indelibly marked at a suitable place with the following: a) Name or trade-mark of the manufacturer, and b) Batch/lot number. 12.2 BIS Certification Marking 12.2.1 The product may also be marked with the Standard Mark. 12.2.2 The use of the Standard Mark is governed by the provisions of the Bureau of Indian Standards Act, 1986 and the Rules and Regulations made thereunder. Details of conditions under which a Iicence for the use of the Standard Mark maybe granted to manufacturers or producers maybe obtained from the Bureau of Indian Standards. WC shall be fixed in a stable arrangement on the floor with proper screw. A load of 400 ~ ~ kg or a force of 4 ~:5 kN shall be applied for a period of one hour by placing it on a wooden beam with a cross section of 100 mm x 100 mm positioned across the centre of the opening of the top surface of the WC. There shall be no damage or defect that shall occur to the WC. 11 SAMPLING, PROCESS LOT INSPECTION INSPECTION AND The recommended method of sampling, process 7 Bureau of Indian Standards B1S is a statutory institution established under the Bureau of Indian Standards .4ct, 1986 to promote harmonious development of the activities of standardization, marking and quality certification of goods and attending to connected matters in the country. Copyright BIS has the copyright of all its publications. No part of these publications may be reproduced in any form without the prior permission in writing of BIS. This does not preclude the free use, in the course of implementing the standard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relating to copyright be addressed to the Director (Publication), BIS. Review of Indian Standards Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewed periodically; a standard along with amendments is reaffirmed when such review indicates that no changes are needed; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standards shou Id ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of `BIS Catalogue' and `Standards: Monthly Additions'. This Indian Standard has been developed from Dot: No. CED 3 (7002). Amendments Issued Since Publication Amend No. Date of Issue Text Affected BUREAU OF INDIAN STANDARDS Headquarters: Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi 110002 website : www.bis.org.in Telephones: 23230131,23233375,2323 9402 Regional Offices: Telephones 23237617 { 23233841 23378499,23378561 { 23378626,23379120 2603843 { 2609285 22541216,22541442 { 22542519,22542315 28329295,28327858 { 28327891,28327892 Central Eastern Northern Southern Western Branches : Manak Bhavan, 9 Bahadur Shah Zafar Marg NEW DELHI 110002 : 1/14 C.I.T. Scheme VII M, V.I.P. Road, Kankurgachi KOLKATA 700054 : SCO 335-336, Sector 34-A, CHANDIGARH 160022 : C.I.T. Campus, IV Cross Road, CHENNAI 600113 : Manakalaya, E9 MIDC, Marol, Andheri (East) MUMBAI 400093 : AHMEDABAD. BANGALORE. BHOPAL. BHUBANESHWAR. COIMBATORE. FARIDABAD. GHAZIABAD. GUWAHATI. HYDERABAD. JAIPUR. KANPUR. LUCKNOW. NAGPUR. NALAGARH. PATNA. PUNE. RAJKOT. THIRUVANANTHAPURAM. VISAKHAPATNAM. Printed at Simco Printing Press, Delhi