CATEGORY-F : LEVEL CROSSING, BOUNDARY WALLS/WIRE FENCING, PILLARS ETC.
CATEGORY-L : WASHABLE APRON, WASHING LINES, SHEDS & GANTRIES ETC.
CATEGORY-M : LOADING GAUGE, BUFFER STOPS
CATEGORY-O : OFFICE BUILDINGS
CATEGORY-P : PLATFORM, NAME BOARDS & PLATFORM BENCHES ETC.
CATEGORY-PQ : TYPE PLAN BARRACK GRP/RPF
CATEGORY-Y : YARDS & STATIONS
CATEGORY-W : WATER SUPPLY – OVERHEAD / UNDERGROUND WATER TANK, FILTRATION & CHLORINATION PLANTS ETC.