Projects that move concrete, steel, teams and critical decisions.

One of the largest hydroelectric plants in Mario Rocha's career, with 1,710 MW of installed capacity. The project involved monumental volumes of concrete, steel and excavation for the execution of earth dams and embankments.

Role

• Construction of the dam and associated structures for CEMIG.
• River diversion with cofferdams and diversion structures, enabling the dam and the concrete structures to be built in the dry.
• Dewatering of excavations and foundations by continuous pumping, with seepage control on the rock and soil fronts.
• Execution of the hydraulic structures — spillway, intake and headrace circuit — coordinating large concrete-pouring, formwork and falsework fronts.
• Technical and managerial oversight of field production.

Direction of the hydraulic-circuit works of one of Portugal's main power plants (630 MW), including the powerhouse, underground tunnels, ventilation galleries, butterfly-type valve chamber and discharge channel.

Role

• Direction of the hydraulic-engineering works of the headrace and tailrace circuit: tunnels, valve chamber and the discharge channel returning the turbined water to the river.
• Continuous drainage and pumping of groundwater inflows from the rock mass in the underground excavations — powerhouse, tunnels and galleries.
• Mobilization and coordination of around 1,500 workers.
• Coordination of two dozen contractors and equipment suppliers.

A multipurpose project combining flood control, irrigation, water supply, agricultural development and hydropower generation, with regulation of the Baba River — 4 dikes, 1 "duckbill" spillway, 3 relief gates and 1 powerhouse along 5 km. Direction of the design and construction supervision.

Responsibilities

• Direction and technical supervision of the dam, the water-transfer system — a water-transfer tunnel 7 to 8 m in diameter diverting the Baba River to the Daule-Peripa reservoir — the power generation works and the hydraulic infrastructure.
• Supervision of the construction of canals, galleries and pipelines from 1.2 m to 5 m in diameter (GRP on the secondary lines), with intake and discharge structures.
• Supervision of drainage, hydraulic sanitation, flood control and erosion protection.
• Schedule analysis, drawing approval and verification of design detailing.
• Approval of measurements, technical reports and construction procedures; quality and cost control.
• Coordination between the client, designers and contractors; health and safety, environment and risk; handover and commissioning.

A strategic project in Ecuador's energy development, with two cascading schemes — Pilatón-Sarapullo and Toachi-Alluriquín — and a mini-plant at the foot of the Toachi dam.

Responsibilities

• Management of the supervision of the cascading schemes.
• Review of studies, final designs and tender documents.
• Review of the designs for the intake structures (bocatomas) and the desanders — structures removing sediment from the abstracted water before conveyance to the turbines.
• Review of the designs for the Toachi dam, the spillway and the river-diversion works for the construction phase.
• Review of the headrace hydraulic circuit — tunnels, surge chambers and penstocks — and of the structures returning the turbined water to the river.
• Review of the hydrology and sediment-transport studies that underpinned the sizing of the developments and the desanders.
• Monitoring of Francis turbines and powerhouse structures.

Construction of stations and tunnels on the Green and Yellow lines, with excavation and segment-lining work in a dense urban environment.

Role

• Construction of the Jabaquara, Santa Cecília and Terminal Tietê stations.
• Excavation and segment linings.
• Groundwater lowering with deep wells and wellpoints, and dewatering of the excavation fronts, to build the stations below the water table.
• Relocation of the public water and sewer networks at the station areas — the line excavations, at depth, ran below the existing networks.
• Waterproofing and permanent drainage of the stations' buried structures.
• Production management on a highly complex urban front.

Expansion works on Rio de Janeiro's airport infrastructure, covering airside and operational support buildings.

Scope

• Expansion of runways and taxiways.
• Surface and deep drainage of the runways and taxiways — stormwater capture and discharge as a condition of performance and operational safety for the airport pavement.
• Railway support yard.
• Expansion of the administrative building.
• Air traffic control tower.
• Hydraulic, sanitary and stormwater installations of the support buildings.

Access viaduct to the Coimbra Bridge-Weir and to IP3/IC2/IC3, in reinforced and prestressed concrete, 1.4 km long with a 23,200 m² deck, on deep foundations of large-diameter piles executed alongside the Mondego River. The work is integrated into the Bridge-Weir complex — a weir regulating the Mondego River — with the viaduct connecting the road network to the crossing over the hydraulic structure.

Specifications

• Foundations on 800 mm and 1,000 mm diameter piles (11,200 m).
• 100 capital-shaped piers, with a transition section.
• Prestressed concrete slab deck, 0.56 m thick.

Project management of the new Chiquimula public hospital, covering preparation, planning and construction of a 214-bed healthcare facility, with an ICU and 5 operating rooms.

Role

• Preparation and planning of the works.
• Technical management of construction; technical, contractual and financial control of the project.
• Supervision of the civil, electrical, hydro-sanitary and mechanical installations and of the hospital equipment.
• Complete hospital hydro-sanitary system — potable-water supply with a dedicated well, cistern and distribution networks; wastewater networks with collectors conveying the effluent to the wastewater treatment plant (WWTP); and independent stormwater drainage, in accordance with MSPAS/SEGEPLAN standards.

Total capacity of 214 beds: 189 census and 25 non-census beds.