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Geotextiles and geogrids are used as a separator between the formation subgrade and the stone capping layer in road construction. Geogrids are also used to strengthen the layers of road construction materials and a layer of geogrid can be incorporated between the layers of road stone. Geogrids are usually manufactured from polypropylene sheet, oriented in two directions with the ribs rectangular in cross section in both the longitudinal and transverse directions. Materials used to manufacture geotextiles and geogrids shall be inert to all chemicals naturally found in soils and shall be resistant to aqueous solutions of salts, acids and alkalis and be non biodegradable. Geogrid shall be manufactured in accordance with the Quality Assurance requireme . Anguila, Antigua, Argentina, Aruba, Australia, Austria, Bahamas, Bahrain Bangladesh Barbados Belgium Belize Bermuda Bolivia Bosnia Botswana Bouvet Brazil British Virgin Islands Brunei Bulgaria Cambodia Cameroon Canada Cayman Islands Chad Chile China Colombia Commoros Congo Cook Islands Costa Rica Croatia Cuba Curacao Cyprus Czech Republic Denmark Djibouti Dominica Dominican Republic Dutch Antilles East Timor Ecuador Egypt El Salvador Equatorial Guinea Eritrea Estonia Ethiopia Falkland Islands Fiji Finland France French Guyana French Polynesia Gabon Gambia Georgia Germany Ghana Gibraltar Greece Greenland Grenada Guadelupe Guam Guatemala Guyana Haiti Holland Hong Kong Hungary Iceland India Indonesia Iran Iraq Ireland Italy Jamaica Japan Jordan Kazakhstan Kenya Korea Kuwait Laos Latvia Lebanon Lesotho Liberia Libya Liechtenstein Luxembourg Macao Macedonia Madagascar Malawi Malaysia Maldives Mali Malta Marshall Islands Martinique Mauritania Mauritius Mexico Micronisia Monaco Mongolia Monserrat Morocco Mozambique Myanmar Namibia Nauru Nepal Netherlands New Caledonia South Africa South Korea Spain Sri Lanka St Lucia St Maarten St Vincent Sudan Surinam Swaziland Sweden Switzerland Syria Taiwan Tanzania Thailand Tonga Trinidad Tunisia Turkey Turks United States America USA UAE United Arab Emerates Uganda Ukraine UK United Kingdom Uruguay US Virgin Islands New Zealand Nicaragua Niger Nigeria Niue Norfolk Island North Korea North Mariana Islands NI Northern Ireland Norway Oman Pakistan Panama Papua New Guinea Paraguay Peru Philippines Poland Puerto Rico Qatar Reunion Island Romania Russia Rwanda Saba San Marino Santo Domingo Sao Tome Saudi Arabia Senegal Serbia Seychelles Sierra Leone Singapore Slovakia Slovenia Solomon Islands Somalia Uzbekistan Vanuatu Vatican City Venezuela Vietnam British West Indies Western Samoa Yemen Zaire Zamia Zanzibar Zimbabwe books cameras dvds shoes perfumes vitamins toys bikes mobile phones |