Disclosure to Promote the Right To Information

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1 इ टरन ट म नक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. ज न1 क अ+धक र, ज 1 क अ+धक र Mazdoor Kisan Shakti Sangathan The Right to Information, The Right to Live प0र 1 क छ ड न' 5 तरफ Jawaharlal Nehru Step Out From the Old to the New IS (2009): Application of Coir Geotextiles (Coir Woven Bhoovastra) For Rain Water Erosion Control in Roads, Railway Embankments and Hill Slopes - Guidelines [TXD 30: Geotextiles and Industrial Fabrics]! न $ एक न' भ रत क +नम-ण Satyanarayan Gangaram Pitroda Invent a New India Using Knowledge! न एक ऐस खज न > ज कभ च0र य नहB ज सकत ह ह Bhartṛhari Nītiśatakam Knowledge is such a treasure which cannot be stolen

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4 IS : 2009 ~,. ~ cf> ~tt 3tf~ Qi3I'-S1. cfi ~. q)t ern \JWf ~ ~ ~ ~ cfi ~ -gg ~ \JfCT cf> ~~ (~ \JfCT ~ ~ 1i4?=i) cfi ~cf>~~ Indian Standard APPLICATION OF COIR GEOTeXTILES (COIR WOVEN BHOOVASTRA ) FOR RAIN WATER EROSION CONTROL IN ROADS, RAILWAY EMBANKMENTS AND HILL SLOPES - GUIDELINES ICS 59.0XIUO O BIS 2009 B UR E A U O F I NDI A N S TAN DA R DS MANAK BHAVA N. 9 BAHAD lj R S HA H Z A FA R MAR G NEW DELH I I March 2009 Pri ce Group 2

5 Gcosynthet ics Sectional Commiuce, TXD 30 H>REWORD This Indian Stand ard was adopted by the Bureau o f Indian Standards, after the draft finalized by the Geosynthetics Sectional Committee had been approved by the Textile Div ision Council. The use of natural li bre geotext iles has been recognized in erosion co ntrol in embankmen t co nstructio n for roads and railways, dam engineering, canals, etc and in road pavements. Their increasin g imp ortance is due to their versatility based on their spec ific prop erties. For applications, it is desired that the geotextiles maintain integrity during the course of its life and do not tear, split and deteriorate under constructional or post-con structi onal stresses. From the view point o f appl icati on s of natural fibre geote xtiles, guidelin es for applica tio n in water erosion control need to be es tablished. Woven coi r bhoovastra is a natural coi r matt ing. Th is woven coir bhoova stra can be used for rainwater erosion co ntrol in road and railwa y embankment s and hill slopes. Exposed soi l surface road and railway embankments and hill slopes by impa ct of rain drops and surface wind which cause surface run off particles. These particles carry seeds and soil nutrients. Natural growth of vegetation on slope will protect the surface soil. By the application of woven coir bhoovustra redu cing the effects of raindrops and controlling surface soil particles. Woven co ir bhoovustru form s mulch and foster s qu ick vegetat ive growth. The selection o f wov en co ir bhoovastra is basicall y depend on type o f soil to he protected ensured primarily from rain water erosion is gee-tec hnically stable. Th e se lection o f woven coi r bhoovastra basicall y dep end s upon the slope and the ex treme rain fall in a lim ited time span. For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expres sing the result ofa test or analy sis, shall he rounded off in accordance with IS 2 : 1960 'Rules for rounding off numerical value s (rev ised)'. The number of significa nt places retained in the rounded off value sha ll he the same as that of the speci fied value in this standa rd.

6 Indian Standard IS : 2009 APPLICATION OF COIR GEOTEXTILES (COIR WOVEN BHOOVASTRA) FOR RAIN WATER EROSION CONTROL IN ROADS, RAILWAY EMBANKMENTS AND HILL SLOPES - GUIDELINES I SCOPE This standard pre scribes the code for the guidel ines of woven coirbhoovastra suitable for application in slopes ofroad and railway embankments and also in hill slopes including the selection of wo ven coir bhoovastra and installation methods. 2 MATERIALS 2.1 Coir Woven Bhoovastra Open stru cture coir woven bhoovastra made out of coir threads in wh ich each warp thread get s interlaced alternatively over and under by successive weft thre ad. 3 MECHANISM OF SOIL EROSION Expose d soi l surface road and railway emban km ent s and hill slope s by impact of rain drops and surface wind which ca use surfac e run off particles. These impacts detach the soi l particles and carrie d away by the surface run off. These particles carry seed s and soi l nutrients. Nat rral growth of vegetation on slope is thus hindered. 4 ROLE OF COIR WOVEN BHOOVASTRA IN SURFACE EROSION CONTROL Coir woven bho ovastra are permeable co ir fabrics made from natural coir fibre. Coir woven bhoovastra control soil erosion by acting as a ground co ver. As a ground cover. it reduces the flow velocity of run off water by forming check dams with help of net structured strands of coir woven bhoovastra in firm co ntact with soil, wh ich ab sorb the impact of water flow and resist washing down keeping the soil intact. 5 SELECTION OF COIR WOVEN BHOOVASTRA The choices of coi r woven bhoovastra basi cally depend on the type o f soil to be protected. It requires to be ensured primarily that the slope to be protected from rainwater erosion is gee-technically sta ble. It abo required considering the ex treme rainfall in a limited time span at that location as the intensity of rainfall is more importa nt than the average annual rain fall. It is recommended that the choice ofcoir woven bhoovastra shall be 400nOO where intens ity of rainfall is severe irrespective of type soil and slope is < I : I. 6 INSTALLATION METHOD 6.1 The stages o f laying of woven coir wo ven bhoovastra on slopes for rain water erosion co ntrol arc as under Th e slope shall he made free from undulations. soil slurry, mud and sharp projections and compacted with additional earth where necessary An choring tren ches shall he excavated at the top and toe of the slope along the slope downward. caring 10 see that it touches the soil surface at all points The selec ted co ir woven bhoovastra shall be unrolled ac ross the top trench and along the slope downward, caring to sec that it touches the soil surface at all points O verlaps shall be minimum 150 mm ar sides and ends (see Fig. I). The coir woven bhoovastra at the higher level on the slope shall be placed over level. Side overlaps of a coir woven bhoovastra piece shall be placed over its next piece o n one side and under the next piece on the other The coir woven bhoovastra shall be fixed in position by steel staples of 220 mm lengths (usually of 11 gauge diameter) or by spilt bamboo pegs. Stapling shall be done normally at an interval of mm both in longitudinal and transverse directions. Special care shall be taken to staple the co ir woven bhoovastra within the anchoring trenches (300 mm depth and 150 mm width) both at the bottom and at the sides The anch oring tren ches shall be filled up with brick-bats/soil for preventing displacement of the co ir wo ven bhoovastra. Care shall betaken that the overlaps are not displ aced during installation Care shall be taken to ensure that the coir woven Bhoovastra is not damaged due to puncture. lear and othe r operational stresses Seeds of vegetation (grass. legumes. etc. o f appropriate variety) shall than be spread (Annex A for

7 IS : 2009 FIG. I OVERLAPPING OF COIR WOVEN BHOOVASTRA guidance in selecting the species ofvegetation). If seeds are not available, saplings of the appropriate plant species may be planned at suitable intervals through the opening of the coir woven bhoovastra In special circumstances. a second dose of seed s may be spread with dibbling of locally available grass Installation shall be completed preferably before the monsoon to take advantage of the rains for quick germination of seeds. 7 MONITORING 7.1 Close mon itoring shall be done for at least one season cycle. 7.2 The treated area shall be kept out of bounds for cattle and other grazing animals till the time ofmaturity of vegetation. 7.3 The damage and displacement of coir woven bhoovastra shall be noted for corrective act ion. Torn portionsofthe coir woven bhoo vastra shall be covered with new pieces of coi r woven bhoovastra of identical specification duly stapled at all sides. 7.4 Watering/maintenance of identical speci fications duly stapled at all sides. 7.5 Advice shall be sought from specialist to find out cause of unsatisfactory growth ofvegetation. Withered plants shall be replaced. Species of vegetation needs to be selected carefully considering the local soil and climatic conditions. 2

8 IS 15872: 2009 ANNEXA (Clause 6.1.8) GUIDANCE IN SELECTING THE SPECIES OF VEGETATION Name ofthe Species Avicennia officinalis Rhizophora mucrunata Cyperus mxaltatus Acrostichum mureum Adiantum spices Cyanodon dactyl on Cenehurs ciliaries Eragrostis curuvla Dianthum annulatum Pennisetum pedicellatum Both rochola glabra Stylosunthis gracilis Stylosamth is gusineusis Pucraria hirsute Pennisetum purpureum Peuraria hirsta Suitedfor Shrub suitable for marshy places Shrub suitable for marshy place s Grass suitable for highway slopes Shrub suitable for dam sites Shrub suitable for dam sites For light sandy soil s For most types of soil For protecting terraces and channels For light soil For sandy loa:n soil For red scmi-arid soi I For light soils with low moisture For light and med ium soil with low moisture Cover cro p suited to alluvial soil and for hills in humid cl imate For hill slopes Cover crop suited to alluvial soil ']

9 Bureau or Indian Standards BIS is a statutory institution established under the Bureau of indian Standards :L I. : ')' /' '0 promote harmonious development of the activities of standardization, marking and qu ality ccrtuic.:' : :! of go ods and attending ( 0 connected mailers in the country. Copyright BIS has the copyright of all its publi cations. No part of these publications may be reproduced in any form without the prior permission in writing of BIS. Thi s 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 (Publications). BIS. Review or 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 should 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 Doc: No. TXD 30 (0959). Amendments Issued Since Publication Amend No. Date of Issue Text Affected Headquarters : BUREAU OF INDIAN STANDARDS Manak Bhavan, 9 Bahadur Shah Zafar Marg. New Delhi Telephones: Regional Offices : Central Eastern Northern Southern Manak Bhavan, 9 Bahadur Shah Zafar Marg NEW DELHI /14 C.IT Scheme VII M. V. I. P. Road. Kankurgachi KOLKATA SCO Sector 34-A, CHANDIGARH C.IT Campus. IV Cross Road. CHENNAI600 1):3 Telegrams : Manaksanstha (Common to all offices) { Telephone { , { { 26O Western Branches Manakalaya, E9 MIDC. Marol, Andheri (East) { MUMBAI AHMEDABAD. BANGALORE. BHOPAL. BHUBANESHWAR. COIMBATORE. FARIDABAD. GHAZIABAD. GUWAHAThHYDERABAD. JAIPUP.. KANPUR. LUCKNOW. NAGPUR. PARWANOO. PATNA. PUNE. RAJKOT. THIRUVANANTHAPURAM. VISAKHAPATNAM. Printed by the Manager. Govt of India Press. Faridabad

Disclosure to Promote the Right To Information

Disclosure to Promote the Right To Information इ टरन ट म नक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information

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Disclosure to Promote the Right To Information

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Disclosure to Promote the Right To Information

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Disclosure to Promote the Right To Information

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Disclosure to Promote the Right To Information

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