1、 Intentionally left blank The American Society of Mechanical Engineers AN AMERICAN NATIONAL STANDARD I ASME A 112.8.32001 (Revision and Redesionation ol ASME A 112.21.1 M-1991) Date of Issuance: November 20, 2001 The next edition of this Standard is scheduled for publication in 2005. There will be n
2、o addenda or written interpretations of the requirements of this Standard issued to this edition. ASME is t he registered trademark of The American Society of Mechanical Engineers. This code or standard was developed under procedures accredited as meeting the criteria for American National Standards
3、. The Standards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate. The proposed code or standard was made available for public review and comment that provides an o pportunity for additio
4、nal public input from industry, academia, regulatory agencies, and the public-at-large. ASME does not “approve,“ “rate,“ or “endorse“ any item, construction, proprietary device, or activity. ASME does not take any position with respect to the validity of any patent rights asserted in connection with
5、 any items mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent, nor assume any such liability. Users of a code or standard are expressly advised that determination of the validity of any such pat
6、ent rights, and the risk of infringement of such rights, is entirely their own responsibility. Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard. ASME accepts responsibility
7、for only those interpretations of this document issued in accordance with the established ASME procedures and pol icies, which precludes the issuance of interpretations by individuals. No part of this document may be reproduced in any form, in an electronic retrieval system or otherwise, without the
8、 prior written permission of the publisher. The American Society of Mechanical Engineers Three Park Avenue, New York, NY 10016-5990 Copyright 2001 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved Printed in U.S.A. FOREWORD The American National Standards Committee All2 was establi
9、shed on July 27, 1955 for the purpose of standardizing plumbing materials and equipment. Its first organizational meeting was held on July 22, 1958, and Panel No. 21 was created on May l, 1964 to establish standards for roof drains, floor drains, backwater valves, and other drainage specialties. Its
10、 scope was as follows: the recommendation of suitable existing standards in cooperation with interested sponsors, or the development of adequate new standards as needed for roof drains, floor drains, and other drains as used or installed in plumbing systems. The committee has since been reorganized
11、as an ASME Standards Committee. The ASME A 112 Committee was restructured in 1998 in accordance with the ASME Redesign Process, and Panel 21 Working Group 1 became Project Team 6.3. The Project Team met twice to update this Standard, which now includes criteria from the International Association of
12、Plumbing and Mechanical Officials (IAMPO) Product Standards PS 4 and PS 16. Suggestions for improvement of this Standard are welcome. They should be sent to the American Society of Mechanical Engineers, Three Park Avenue, New York, NY I 0016-5990. This revision and redesignation of ASME A112.21.1M-1
13、991 was approved as an American National Standard on May 4, 200 l. iii ASME STANDARDS COMMITTEE A112 Standardization of Plumbing Materials and Equipment (The following is the roster of the Committee at the time of approval of this Standard.) OFFICERS P. J . Higgins, Chair S. A. Remedios, Vice Chair
14、C. J . Gomez, Secretary COMMITTEE PERSONNEL R. H. Ackroyd, Consultant J . A. Ballanco, JB Engineering :JJ_ _ Nonferrous adjustable strainer =-Clamping device Seepage opening -i:=:J -Drain body connection FIG. 3 DRAIN FOR BUILT-UP SHOWER -NOMENCLATURE Sealing1 washer Friction washer FIG. 4 DRAIN FOR
15、PREFABRICATED SHOWER - NOMENCLATURE Outlet connection Grate Body outlet section FIG. 5 TRENCH DRAIN NOMENCLATURE heel-proof opening: a grate designed to resist entry of high-heeled shoes. seepage opening: a perforation (hole) in the side wall of drain body sump (usually several are included) above s
16、eepage (flashing) flange to receive any seepage from around the drain and to direct such seepage into the sump. weephole: same as seepage opening. FLOOR AND TRENCH DRAINS 2 GENERAL REQUIREMENTS 2.1 Drain Bodies 2.1.1 Materials. Drain bodies shall be of cast iron, copper alloy, ABS, PVC, PE, PP, or o
17、ther approved materials meeting the requirements of this Standard. Materials shall comply with the standards cited in para. 1.4. No obstruction shall be permitted in the caulking area of a body. 2.1.2 Weep Holes. Weep holes in bodiies shall be a minimum of three in number and shall be a minimum of 0
18、.125 in. (3.2 mm) in diameter. 2.1.3 Smooth Mating Surfaces. The body and clamping ring shall have smooth, level surfaces to provide a watertight j oint with the membrane. 2.2 Shower Drains 2.2.1 Strainers. Shower drain strainers shall be stainless steel 300 series alloy with a minimum thickness of
19、0.050 in_ (1 .3 mm) _ The strainer shall be of the snap-on type or screw fastened. The minimum waterway area of strainers shall be equal to the area of a 2 in. pipe 3.1416 in.2 (2 027 mm2). 2.2.2 Crown/ Collar. A 24 gauge corrosion-resis tant crown and/or collar of 1/4 in. brass ring shall be requir
20、ed between the strainer and cast iron bodies. 2.3 Bolts and Fasteners Bolts and fasteners for cast iron or copper alloy drains shaH be a minimum of 5/16 in. NC. Bolts and fasteners for plastic drains shall be a minimum of 1/4 in. NC. A minimum of three bolts per drain shall be provided. Screw and bo
21、lts provided for shower drains shall be 300 series stainless steel or copper alloy complying with ASTM B 584 (Alloy C 85200 or C 85400) or ASTM B 16. 3 OUTLETS - TYPES AND CONNECTIONS 3.1 Outlet Types 3.1.1 Bottom Outlet. Threaded, ins ide caulk, spigot, hubless. or solvent-welded with centerline of
22、 outlet vertical. See Fig. 6.) 3.1.2 Side Outlet. Threaded, hub (outside caulk), spigot, hubless, or solvent-welded with centerline of outlet horizontal. (See Fig. 7.) 3 ASME A 112.6.3-2001 1 -Inside caulk ) ?Z: Th“ded Hubless spigot or solvent weld FIG. 6 BOTTOM OUTLET (outside caulk) or solvent we
23、ld FIG. 7 SIDE OUTLET 3.1.3 Side Outlet With Integral Trap. Threaded, hub (outside caulk), spigot, hubless or solvent-welded with centerline of outlet horizontal, and with P trap integral with drain body sump. (See Fig. 8.) 3.2 Outlet Connections 3.2.1 Threaded. All threaded outlet connections shall
24、 be American Standard Taper Pipe Threads for general use (NPT) and shall conform to the minimum dimensions shown in Table 1. ASME A 112.6.3-2001 Hub (outside caulk) or solvent weld FIG. 8 SIDE OUTLET INTEGRAL TRAP TABLE 1 MINIMUM DIMENSIONS FOR THREADED OUTLET CONNECTIONS Nominal A Pipe NPT, B D Siz
25、e, in. in. in. mm in. 1% 1% 25/16 59 7;16 2 2 2% 73 7/16 2% 2% 3% 86 % 3 3 4Y8 105 % 4 4 5% 130 116 5 5 6Y4 159 7;8 6 6 7% 184 1 mm 11 11 16 19 21 22 25 3.2.2 Inside Caulk. All inside caulk outlet connec tions shall conform to the minimum dimensions shown in Table 2. No obstructions shall be permiit
26、ted in the caulking areas. 3.2.3 Hub (Outside Caulk). All hub connections shall conform to the minimum dimensions shown in Table 3. 3.2.4 Spigot . All spigot outlet connections shall conform to the beadless dimensions shown in ASTM A 74 or ASTM A 888. 3.2.5 Solvent Cement. All solvent-cemented out l
27、et connections shall be made using appropriate solvent cement and methods of joining. ABS solvent cement joints shall be in accordance with ASTM D 2661 and PVC solvent cement joints shall be in accordance with ASTM D 2665. 3.2.6 0 -ring or Gasketed Joints. 0-ring or gas keted joints shall comply wit
28、h ASTM C 564, ASTM C 1440, or CSA B602. 4 FLOOR AND TRENCH DRAINS 181 t ! 2 in. I (51 mm) I -v-7;32 in. (5.6mm) TABLE 2 MINIMUM DIMENSIONS FOR INSIDE CAULK (GASKET) OUTLET CONNECTIONS Nominal Pipe A B Size, in. in. mm in. 2 2% 64 3 3 3% 92 4Ya 4 4% 117 5Ya 5 5% 143 6Ya 6 6% 168 7Ya 7;32 in. (5.6 mm)
29、 t TABLE 3 MINIMUM DIMENSIONS FOR mm 76 105 130 156 181 HUBBED (PUSH-ON) OUTLET CONNECTIONS Nominal Pipe A B Size, in. in. mm in. mm 2 2 51 3 76 3 3 76 4% 105 4 4 102 sl;s 130 5 5 127 61/s 156 6 6 152 7% 181 3.3 Tolerances Dimensions given in Tables 1, 2, and 3 and the associated figures shall be su
30、bject to standard commer cial tolerances of 1/16 in. ( 1.6 mm). 4 TOP DIMENSIONS - GRATE-FREE AREA 4.1 Geometry for the Drain Top The drain top shall be any geometric shape. FLOOR AND TRENCH DRAINS TABLE 4 OPEN AREA REQUIREMENTS FOR DRAINS Transverse Outlet Connection Area of Grate Free Area Size, C
31、onnecting Pipe M in. in. in.2 cm2 in? Floor Drains 2 3.14 20.3 5.0 3 7.06 45.5 11.0 4 12.5 80.6 18.0 5 19.6 126.4 30.0 6 28.3 182.5 42.0 Shower Drains 2 3.14 20.3 5.0 3 7.06 45.5 11.0 4 12.5 80.6 18.0 Area and Trench Drains (subject to rainfall 2 3.14 20.3 6.5 3 7.06 45.5 14.0 4 12.5 80.6 25.0 5 19.
32、6 126.4 40.0 6 28.3 182.5 56.0 4.2 Ope n Area Re quire m e nts for Va rious Classificatio ns of Drains cm2 32.3 71 .0 116.1 193.5 270.9 32.3 71 .0 116.1 41.9 90.3 161.3 258.0 361.2 Opening area requirements for drains shall be as shown in Table 4. 4.3 Ope nings in Top Grates Openings shall be any ge
33、ometric shape. Openings shall be sized to exclude debris and accommodate the anticipated traffic. When drainage requirements dictate openings that would permit entrance of debris, a sedi ment bucket shall be installed in the drain body sump to intercept this debris. 5 TOP LOADING - CLASSIFICATION 5.
34、1 Loading Classifications Grates and top rims shall be designed to meet the following loading classifica lions: 5.1.1 Light Duty. Grates having safe live load (as calculated in para. 5.2.5) under 2,000 lb (900 kg). 5.1.2 Me diu m Duty. Grates having safe live load (as calculated in para. 5.2.5) betw
35、een 2,000 lb (900 kg) and 4,999 lb (2 250 kg). 5 ASME A 112.6.3-2001 5.1.3 Heavy Dut y . Grates having safe live load (as calculated in para. 5.2.5) between 5,000 lb (2 250 kg) and 7,499 lb (3 375 kg). 5.1.4 Extra Heavy Duty. Grates having safe live load (as calculated in para. 5.2.5) between 7,500
36、lb (3 375 kg) and 10,000 Lb (4 500 kg). 5.1.5 Specia l Dut y Grates having safe live load (as calculated in para. 5. 2.5) over 10,000 lb (4 500 kg) shall be considered special duty. 5.2 Test Procedure fo r Grat e Loading Safe live load requirements, as listed in para. 5.1 shall be determined as foll
37、ows: 5.2.1 Load Classificat ions . Load classifications as stated in para. 5.1 shall be determined by labora tory tests. 5.2.2 Plate n S ize . A 3.5 in. (89 mm) diameter platen shall be applied to the center of the grate specimen. 5.2.3 Loading. Loading shall be applied slowly so that point of failu
38、re can be observed. 5.2.4 Point of Fa ilu re (a) Brittle Materials (Cast Iron. The point of failure of brittle materials shall be the load (in pounds or kilograms) at which the first fracture on any part of the specimen appears. (b) Ductile Material. The point of failure of ductile materials shall b
39、e the load at which the permanent set (at the point of loading) is greater than 2% of the longest transverse dimension of the specimen. 5.2.5 Safe Live Load. The maximum safe live load shall be computed iby dividing the load at failure by two. 6 MATERIALS AND FINISHES 6.1 Ma terials The items covere
40、d in this Standard shall be of the material specified and shall meet all applicable requirements and standards given herein. The castings for these drains shall be sound, free of blow holes, cold shuts, and other imperfections, and shall be of uniform wall thickness and true to pattern. They shall a
41、lso be clean and free of fins. It shall not be the intent of this Standard to limit acceptable materials to those included in this section. The use of other materials ASME A 112.6.3- 2001 meeting the requirements of this Standard and having comparable performance shall be permitted. 6.1.1 Cast Iron.
42、 Castings shall conform to ASTM Specification for Grey Iron Castings A 48, Class 25. The minimum thickness for the casting shall be 7/32 in. (5.6 mm). 6.1.2 Copper Alloy. Castings shall conform to the chemical and mechanical requirements of ASTM B 584 for Copper Alloy Nos. C83600, C83800, and C84400
43、. The minimum thickness for the casting shall be %2 in. (4 mm). 6.1.3 Leaded Nickel Bronze (Nickel Silver). Castings shall conform to the chemical and m echanical requirements of ASTM B 584 for Copper Alloy Nos. C97300, C97600, and C99700. The minimum thickness for the casting shall be 5/32 in. ( 4
44、mm). 6.1.4 ABS. Floor drain bodies manufactured from Acrylonitrile-Butadiene-Styrene (ABS) shall conform to physical property requirements contained in ASTM D 3965. The cell classification shall be 3-2- 2-2-2. The minimum thickness for the mold shall be %2 in. (4 mm). Inserts for fasteners in plasti
45、c drains shall be molded into the plastic material. 6.1.5 PVC. Floor drain bodies manufactured from Poly (Vinyl Chloride) (PVC) shall conform to physical property requirements contained in ASTM D 1784. The cell classification shall be 12454-B , 12454-C , or 14333-C. The minimum thickness for the mol
46、d shall be %2 in. (4 mm). Inserts for fasteners in plastic drains shall be molded into the plastic material. 6.1.6 Bolting Materials. The materials for studs, nuts, cap screws, and other steel fasteners shall at least equal the requirements of ASTM Specifications A 307, Carbon Steel Externally Threa
47、ded Fasteners, Grade A, and A 563, Carbon and Alloy Steel Nuts, Grade A. Threads shall be Classes 2A and 2B, and shall be plated. 6.2 Finishes In all cases in which parts are to be coated or plated, they shall be cleaned to provide a suitable surface for proper bonding of the finish. 6.2.1 Paint Coa
48、tings. Iron castings s hall be cleaned and coated with a suitable paint, lacquer, or synthetic coating of quality to provide protection against rusting of ferrous surfaces during normal handling and warehousing prior to installation. 6 FLOOR AND TRENCH DRAINS 6.2.2 Cadmium Plate. After preplating cl
49、eaning, parts shall be given a Commercial Grade Cadmium Plate. 6.2.3 Chrome Plate, Decorative. Parts shall be polished prior to plating and then given a Commercial Grade Copper-Nickel-Chromium Plate. 6.2.4 Bronze Chromate. Parts shall first be given a Commercial Grade Cadmium Plate and then a Com mercial Grade Bronze Chromate treatment. 6.2.5 Zinc Plate. After preplating cleaning, parts shall be given a Commercial Grade Zinc Plate. 7 VARIATIONS The optional features
