general-vettoor gp annual plan 2025-26-prj no 214 govt lps vilabhagam fornt yard interlocking-general civil work-- 1 2025-26-prj no 214 govt lps vilabhagam fornt yard interlocking 2 16.68:providing and laying 60 mm thick factory made cement concrete interlocking paver block of m - 30 grade made by block making machine with strong vibratory compaction, of approved size, design & shape, laid in required colour and pattern over and including 50 mm thick compacted bed of coarse sand, filling the joints with fine sand etc. all complete as per the direction of engineer-in-charge. 3 4.1.3:providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - all work up to plinth level:1:2:4 (cement : 2 coarse sand (zone-iii)derived from natural sources : 4 graded stone aggregate 20 mm nominal sizederived from natural sources)