Construction of Storm Water Networks with RC/GRP pipes and precast concrete box channels including trench works, supply & laying of pipes and culverts, re-asphalting, traffic detours, thrust boring works and relocation of existing utilities at Masanea, Shefa, Marwa, Bader, Namar, Hazm, Okaz districts in Riyadh City. Project scope includes more than 82 km of network upto dia 1400 mm, over 68,800 m3 reinforced box culvert, 500 meters thrustboring works, 7,000 meter channel works and related earthworks and asphalting activities.