jobwork job no sw177 provn of klp otm accn for army avn sqn , supply only false ceiling shall be 12mm mireral fibre board of size 595 x 595 aluminium snap grid frame , supply only for exterior grade 150f ceiling system comprising of 150mm x 17mm deep panels roll formed out of 0.5mm galvanized steel with stove enameled coil coated finish. the panel shall be pretreated and coil coated on one side in manufacturer standard color shads and the rear side of the panel shall given a coat of primer and finish color coat in polyster for a min dry film thickness 20 microns fixed on the roll formed carrier 35.5mm x 488mm deep out of 6mm thick galvanized steel with prongs to hold panels in the module of 150mm at maximum 1.2m c/c. the carrier to be suspended from roof truss by rigid suspension angle as per manufacturers recommendation. false ceiling work also includes providing ceiling flashing using factory formed 0.5mm thick polyster coated galvanized steel material.