Construction of Safety Enclosure Rooms at 20m height near Line A & Line B of Travelling Grate System. – Design, Procurement, Fabrication & Erection of Steel pre-engineered structure covered with 100mm Thick Insulated sandwich pannels. – Covering of 100mm Thick sandwich pannels with 3mm thick M.S sheet from all around to protect insulation pannels. The languages only differ in their grammar, their pronu nciation and their most common words. pronunciation and more common words. If several languages coalesce. nciation and their most common words. pronunciation and more common words.