Tenders are invited for the Rehabilitation Works of Road B, Mangai Nsiengwon (79,360 Km) by Himo Method, Congo. The rehabilitation work of the road Nsiengwon Mangai Oveke 1 (79,360 Km) by the method HIMO in accordance with the conditions stipulated in this SCC. This contract consists of 16 lots: Lot 1: Section PK 0+000 to PK 5+000. Lot 2: Section PK 5+000 to PK 10+000. Lot 3: Section PK 10+000 to PK 15+000. Lot 4: Section PK 15+000 to PK 20+000. Lot 5: Section PK 20+000 to PK 25+000. Lot 6: Section PK 25+000 to PK 30+000. Lot 7: Section PK 30+000 to PK 35+000. Lot 8: Section PK 35+000 to PK 40+000. Lot 9: Section PK 40+000 to PK 45+000. Lot 10: Section PK 45+000 to PK 50+000. Lot 11: Section PK 50+000 to PK 55+000. Lot 12: Section PK 55+000 to PK 60+000. Lot 13: Section PK 60+000 to PK 65+000. Lot 14: Section PK 65+000 to PK 70+000. Lot 15: Section PK 70+000 to PK 75+000. Lot 16: Sectionn PK 75+000 to PK 79+360. The rehabilitation of runways; Rehabilitation applies to routes with significant deterioration of the roadway and the adjacent layer requiring reloading important input materials. It includes the operations and activities: cleaning or preparatory work. The Earth: This includes all activities excavated and embankment, and the important contributions of materials selected on the basis of the road. Surface drainage: the creation of ditches, including dikes and the formation of the camber of the roadway. Drainage under way: restoring flows in nozzles and scuppers. Reprofiling of the track. Reprofiling Heavyweight: This process refers to the correction of deformities and profound deterioration of the platform such as ravine, potholes, flashes, waves: clearing, stripping topsoil from the base of the road pruning the surface, control of vegetation on the influence of the road. Drainage under way: the restoration of flows to the nozzles and scuppers. Maintenance improving. Improvement in the shape of the road by plugging of holes: control of vegetation on the plate and the influence of the road; creation of ditches and bled including provisions to control erosion; restoration of flows to the nozzles and scuppers; possibility of plugging holes on the road with selected materials. The gravelling applies only to a section of road already rehabilitated or re-profiled. Reloading applies only to a sandy stretch of road. Maintenance improving: The process of reloading the bearing layer is reduced to reset localized small requiring no support equipment.