As per ITT & TDS of the Standards tender documents
UTMIDP-SUNA/TAHA/WB-115 Construction of 3 Vent 4.5m x 4.5m (CW=5.5) RCC Box Culvert at Ch. 705m on Tahirpur HQ- Moddhanagar Via Chapati Bazar Road under Tahirpur upazila, Dist: Sunamganj.