OEC is proud of this department because it was the first and only department back in 1964 , and it stayed that way until late seventies .

This department is split into :
- Industrial Buildings .
- Residential Buildings .
- Governmental Buildings .
- Rehabilitation Department .

Our engineers are dedicated for quality and sharpness from the shop drawing till the execution passing by the electromechanical works, concrete and aluminum …
All this by respecting the program of works, speed, and quality .

Projects:
- Chossein Hospital in Tripoli (Dr Ghossein) .
- Chalk factory Chekka (Cheikh Amine Khoury) .
- Cement of the middle east in Chekka (Cheikh Amine Khoury) .
- BLF (Batroun) .
- Villa Rouayheb (Elias Rouayheb) .
- Oil Company in Selaata (Port of Selaata ) Nassif Jabbour .
- Villa Moawad (Chaiban Moawad) .
- Centre Sarba "Orient Real Estate" .
- Centre Batroun "Orient Real Estate" .
- Centre Mastita "Orient Real Estate" .
- Centre Adma "Orient Real Estate" .
- Rehabilitation of Zahli and Machghara (CDR) .
- Retaining walls for (MPW) .
- Justice palace in Tripoli "MPW" Mabani , subcontract with Al Jihad .