A# Repair/Maintenance of building, Guard post, Washroom, Connecting Road, store, existing drain, Tarmac/Taxiway, drain, Missile Store & Missile Workshop including Road, Boundary wall, Sewage disposal system & Officer's Mess including ancillary works. B# Repair/Maintenance/Alternation/Improvement of Bldg. C# Maintenance/Renewal/Alteration/Improvement of Bldg including ancillary works. D# Repair/Reconstruction of Retaining wall including ancillary works. E# Repair/Maintenance/Alienation of floor of 1 floor for Bldg & Officer's Mass including ancillary works with internal/external services. F# Repair/Alteration/Improvement of External boundary (Steel Louver).