1、A S T I D2312 88 m 0759510 0025082 T m.t-t-5l-(NB Designation:D 2312-88 AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Race St.,Philadelphia,Pa.19103 Reprinted from the Annual Book o f ASTM Standards,Copyright ASTM If not listed in the current combined index,will appear in the next edition.Standard
2、 Specification for Perforated,Homogeneous Bituminized Fiber Pipe for Septic Tank Disposal Fields This standard i s issued under the fixed designation D 2312;the number immediately following the designation indicates the year of original adoption or,in the case of revision,the year of last revision.A
3、 number in parentheses indicates the year of last reapproval.A superscript epsilon(E)indicates an editorial change since the last revision or reapproval.1.Scope 1 1 This specification covers standard strength homoge-neous perforated bituminized fiber pipe and fittings for use as exfdtration lines fo
4、r septic tank effluent in absorption-disposal fields.1.2 The values stated in SI units are to be regarded as the standard.2.Referenced Document 2.1 ASTM Standard:D 23 14 Methods of Testing Homogeneous Bituminized Fiber Pipe 3.Materials and Manufacture 3.1 Pipe and couplings shall be composed of an i
5、nter-woven fibrous structure thoroughly impregnated with a bituminous compound.The wail of the pipe shall be dense and homogeneous,without seams or laminations,and with a smooth interior surface free of obstructions and rough or flaky areas.Bends and fittings shaii be of the same material as the pip
6、e,or of a material having equal or better physical and chemical characteristics.3.2 Pipe and fittings shall use either of the following joint systems:3.2.1 Type TJ Joilts-Pipe and fittings shail be provided with accurately machined or molded tapered joints,and a taper-sleeve coupling shall be provid
7、ed for each length of pipe and for each fitting where applicable.The slope of the taper in both pipe and coupling shall be 2(4 included angie)(see Fig.1).3.2.2 Type BJ Joints-Pipe and fittings shall have squarely cut ends,and a split-collar or internal coupling shall be provided for each length of p
8、ipe and for each fitting where applicable.4.Chemical and Physical Requirements 4.1 Chernical Resistance-The specimen shall show no evidence of chemical reaction or deterioration of impregnant.4.2 Water Absorption-The maximum water absorption shall be 2 9 6 of the original weight,calculated to the ne
9、arest 0.1%.This specification is under the jurisdiction of ASTM Committee D-8 on Roofing,Waterproofing,and Bituminous Materials and is the direct responsibility of Subcommittee W8.16 on Bituminized Fiber Pipe.Current edition approved Feb.I,1988.Published April 1988.Originally published as D 2312-64
10、T.Last previous edition D 2312-77(1981).Annital Book o f ASTM Sfandards.Vol 04.04.4.3 Kerosine Resistance-Specimens shali meet the dry crushing strength requirements specified in 4.6.4.4 Heat Resistance-The heat shail not cause a weight loss over 1%in the specimen due to exudation of the impregnant.
11、4.5 Resistance to Flattening-The decrease in diameter shall be not more than 3%.4.6 Crushing Strengths-The requirements for dry and wet crushing strengths shall be not less than 11.7 kN/m(800 lbf/ft)with a maximum deflection of 13 mm(0.5 in,).5.Dimensions 5.1 Type TJ Pipe and Couplings-The dimension
12、s of pipe and couplings shali be as specified in Fig.1.5.2 Type BJ Pipe and Collars-The inside diameter and wail thickness of Type BJ pipe shail be identical to Type TJ pipe(see Fig.i),but the pipe shall be finished with square cut butt ends,and a split-collar or internal coupling shall be provided
13、for each pipe length.5.3 Bore-The bore shail be straight and circular in cross section as determined by passing a 1-m(40411.)long man-drel,6.4 mm(1/4 in.)smaller in diameter than the nominal diameter of the pipe,freely through the bore of the pipe.5.4 Perforations-The perforations in both Type TJ an
14、d Type BJ pipe shall be circular,15.9 k 1.6 mm(Ys f/16 in.)in diameter and arranged in two rows parailel to the axis of the pipe.The perforations shall be spaced approximately 76 mm(3 in.)center to center along the rows.These rows may be 90 to 125 apart.6.Sampling 6.1 From each lot to be tested or f
15、raction thereof repre-senting one size of product,select at random a number of lengths equivalent to one half the cube root of the total number of lengths included in the lot,except that in lots of 1000 lengths or less,five lengths shall be taken.If one half the cube root,as calculated,proves to be
16、a fractional number,express it as the next higher whole number,Test specimens shall not include damaged pipe.Tapered joints shail not be included.7.Test Methods specification in accordance with Methods D 23 14.be 1.17 kN/m(80 lbf/ft).loading surfaces.7.1 Determine compliance with the requirements of this 7.1.1 Resistance to Flattening-The flattening load shail 7.1.2 Crushing Strengths-Use the flat parallel plate NOTICE:This standard has either been superseded and replaced by a new version or dis
