1、BRITISH STANDARD BS1214:1977 Specification for Hessian sandbags and rot-proofed hessian sandbags UDC 621.798.151:677.13.074.162.3BS1214:1977 This BritishStandard, having been prepared under the directionof the Fibres, Yarns andFabrics Standards Committee, was published underthe authority of the Exec
2、utive Board on 30June1977 BSI12-1999 First published as BS/ARP57, 1941 First revision as BS1214, 1945 Second revision April1959 Third revision June1977 The following BSI references relate to the work on this standard: Committee reference FBT/2 Draft for comment76/35560 DC ISBN 0 580 09973 3 Cooperat
3、ing organizations The Fibres, Yarns and Fabrics Standards Committee, under whose direction this BritishStandard was prepared, consists of representatives from the following Government departments and scientific, industrial and consumer organizations. Association of Jute Spinners and Manufacturers* B
4、ritish Man-made Fibres Federation British Railways Board British Textile Employers Association Central Council of the Irish Linen Industry Consumer Standards Advisory Committee of BSI Department of Industry International Wool Secretariat Knitting Industries Federation Ltd. Manchester Chamber of Comm
5、erce and Industry Ministry of Defence* Narrow Fabrics Federation Retail Trading Standards Association Textile Institute Warp Knitters Association Wool Textile Delegation The organizations marked with an asterisk in the above list, together with the following, were directly represented on the committ
6、ee entrusted with the preparation of this BritishStandard. Cotton Silk and Man-made Fibres Research Association Jute Sack and Bag Manufacturers Association Lambeg Industrial Research Association National Association of British and Irish Millers Ltd. United Kingdom Jute Goods Association Wira Amendme
7、nts issued since publication Amd. No. Date of issue CommentsBS1214:1977 BSI 12-1999 i Contents Page Cooperating organizations Inside front cover Foreword ii 1 Scope 1 2 References 1 3 Hessian fabric (proofed or unproofed) 1 4 Making up and dimensions of bags 2 5 Rot-proofing requirements 2 Table 1 T
8、ype A fabric 1 Table 2 Type B fabric 1 Table 3 Type C fabric 2 Publications referred to Inside back coverBS1214:1977 ii BSI 12-1999 Foreword This standard was originally published in1941 as BS/ARP57: it was revised and issued as BS1214 in1945 and again revised in1959. The standard specifies three di
9、fferent qualities of sandbags, referred to as types A, B and C as follows. Type A. Made from275g/m 2hessian which can be of medium quality. This quality could include non-standardized imported hessian. Type B. Made from275g/m 2hessian which has to be of good quality. This quality is similar to that
10、normally produced in the Dundee area. Type C. Made from305g/m 2hessian of a quality such as that specified in Indian Standards Institution IS2818 Type1, but of suitable width. The limits of conformity laid down are based on investigations by the industry and are believed to be concordant with good p
11、ractice. The present edition includes methods of sampling and make-up of bags. The proofing requirements have been related to BS2087. In order that bags can be made to the specified dimensions it is important to appreciate that rot-proofing can affect the dimensions of the fabric. If the treatment i
12、s to be applied to the fabric after the bags have been made up, due allowance should be made for this. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standa
13、rd does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated.
14、This will be indicated in the amendment table on the inside front cover.BS1214:1977 BSI 12-1999 1 1 Scope This BritishStandard specifies fabric and making-up requirements for36cm 84cm hessian sandbags. The bags may be supplied unproofed or rot-proofed, at the option of the purchaser. A choice of rot
15、-proofing processes to be used at the discretion of the purchaser is also given. 2 References The titles of publications referred to in this standard are listed on the inside back cover. 3 Hessian fabric (proofed or unproofed) 3.1 Sampling. The sample shall consist of10 bags chosen at random from ea
16、ch lot of10000 bags or part thereof. 3.2 Requirements. The fabric may be produced with conventional selvedges, non-conventional selvedges or one selvedge of each type. When tested by the methods shown, the mass per unit area, threads per10cm and cloth breaking strength shall be as shown in Table 1,
17、Table 2 and Table 3. The pH value of the aqueous extract, when determined as specified in BS3266, shall be4.5 to8.0 in all cases. Table 1 Type A fabric Table 2 Type B fabric Property Nominal value Test method Specification Comments Unproofed min. Proofed min. Mass per unit area (g/m 2 ) 275 BS2471 2
18、45 245 Threads per10cm Warp Weft 43 43 BS2862 but quote the result as threads per10cm 40 36 41 38 Cloth breaking strength (N/50mm specimen width) Warp Weft BS2576 525 350 525 350 Average of10breaks (1per bag) Average of10breaks (1per bag) Property Nominal value Test method Specification Comments Unp
19、roofed min. Proofed min. Mass per unit area (g/m 2 ) 275 BS2471 260 260 Threads per10cm Warp Weft 44 43 BS2862 but quote the result as threads per10cm 43 41 44 43 Cloth breaking strength (N/50mm specimen width) Warp Weft BS2576 550 500 550 500 Average of10breaks (1per bag) Average of10breaks (1per b
20、ag)BS1214:1977 2 BSI 12-1999 Table 3 Type C fabric 4 Making up and dimensions of bags 4.1 Seaming. The bags may be made up with the warp in either the length or width direction of the bag at the discretion of the manufacturer. All bags shall be sewn side and bottom with the stitch described as type4
21、01 in BS3870:1965 using74 tex 3 cotton thread. A man-made fibre sewing thread of equivalent strength and durability may be used subject to the agreement of the purchaser. All bags shall be sewn with an outside seam, shall be unturned and shall have a7.5cm feint or vent at the mouth of the bag; the b
22、ags shall be sewn in one of the following ways, as appropriate. a) Through four folds of cloth where there are two raw edges or patent selvedges together, to form an M seam described in BS3870:1965 as seam type SSc-1. b) Through three folds of cloth where there is one raw edge or patent selvedge, an
23、d one real selvedge together to form an N seam described in BS3870:1965 as seam type SSb-1. c) Through two folds of cloth where there are two real selvedges together, to form a plain seam described in BS3870:1965 as seam type SSa-1. 4.2 Stitch density 4.2.1 The average number of stitches per10cm sha
24、ll be not less than14 when measured in accordance with4.2.2. 4.2.2 Count the number of stitches over a length of10cm on each side and bottom seam of5 bags selected at random from the sample (see3.1). Space the measurements so that both seams are adequately assessed. 4.3 Sewing twines. When tested by
25、 the method given in BS1932-1, the average value of the breaking strength of the sewing twine shall be not less than22N. 4.4 Dimensions 4.4.1 Length. Fold the bag in half, from side to side, and measure the length from the mouth to the stitching, along the fold so formed. The average length of10bags
26、 shall be not less than82.5cm. 4.4.2 Width. Fold the bag in half, from top to bottom, and measure the width from the folded side to the stitching, along the fold so formed. The average width of10bags shall be not less than35cm. 4.5 Tying string. The tying string shall be60cm long and made of413tex 5
27、 jute yarn. It shall be secured in the seam stitching and shall be sewn in2.5cm from the bottom of the vent. The string shall be knotted to prevent withdrawal. 5 Rot-proofing requirements 5.1 General. Where rot-proofing is required, use one of the following processes described in5.2 to5.5 at the opt
28、ion of the purchaser. The processes may be applied to ready-sewn bags, or they may be applied in the piece, prior to cutting and sewing. In the latter case, both seaming twine and tying string will also require rot-proofing by one of the methods to the appropriate chemical limits, if natural fibres
29、are used. 5.2 Cuprammonium process. The copper content of the treated textile shall be that described in BS2087 as the “normal” amount. 5.3 Copper naphthenate process. The copper content of the treated textile shall be not less than0.8% nor more than1.5% when calculated as Cu using the method specif
30、ied in BS2087. Property Nominal value Test method Specification Comments Unproofed min. Proofed min. Mass per unit area (g/m 2 ) 305 BS2471 275 275 Threads per10cm Warp Weft 47 47 BS2862 but quote the result as threads per10cm 45 45 46 47 Cloth breaking strength (N/50mm specimen width) Warp Weft BS2
31、576 550 590 550 590 Average of10breaks (1per bag) Average of10breaks (1per bag)BS1214:1977 BSI 12-1999 3 5.4 Pentachlorophenyl laurate (PCPL) process. The pentachlorophenyl laurate content of the treated textile shall be that described in BS2087 as the “normal” amount. 5.5 Tar oil process. The pheno
32、l content of the treated textile shall be that described in BS2087 as the “heavy” amount.4 blankBS1214:1977 BSI 12-1999 Publications referred to BS1932, Methods of testing the strength of yarns from packages. BS1932-1, Determination of breaking load and extension. BS2087, Preservative textile treatm
33、ents. BS2471, Methods of test for the mass per unit length and per unit area of woven or knitted fabrics. BS2576, Methods for the determination of breaking load and extension of strips of woven textile fabric. BS2862, Methods for the determination of the number of threads per centimetre in woven fab
34、rics. BS3266, Methods for the determination of conductivity, pH, water-soluble matter, chloride and sulphate in aqueous extracts of textile materials. BS3870, Schedule of stitches, seams and stitchings. BS1214:1977 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the in
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