Construction of the hydro-
electric power plant Lauca
at the Kwanza river in
At the Kwanza river in the Northern
Kwanza province of Angola, the hy-
droelectric power plant Lauca is being constructed.
Constructed with compacted concrete, the plant will
have a height of 132 m, a length of 1.100 m length, and the
capacity to produce 2.067 megawatts of energy.
Odebrecht in charge of the Lauca
The Brazilian construction company, Odebrecht, is taking
care of the Lauca project.
In the Lauca project, more than 4.000 construction
workers are employed, 90% of them from Angola. The
first phase of the project, which was completed in August
2014, comprised redirecting the course of the Kwanza riv-
er and the construction of two irrigation tunnels, where
Odebrecht was working with four Putzmeister SPM 4210
WETKRET concrete spraying systems.
In this project, Odebrecht is working with four systems
with on-board air-compressor, whose pumping and spray-
ing system is powered electrically or by the diesel motor.
This allows the machines to be used independently of
electrical supply. The equipment is mounted on an articu-
lated, heavy duty chassis with 4-wheel drive and 4-wheel
The SPM 4210 WETKRET series provides a spraying
reach of 10 m and a concrete output of 20 m³/h. The liquid
additive dosing pump is synchronized with the concrete
flow, guaranteeing high precision and quality spraying.
The concrete output and the adjustment of the prede-
fined additive dosage can be regulated via remote control,
so that the operator can act flexibly when facing chang-
ing working conditions in rock composition, strength and
Contractors World International Vol 6 No 1
The First Gate In Lock Head One Facing Gatun Lake
Carried to its final destination on self-propelled
motorized wheel transporters (SPMTs) with
more than 400 wheels each, the first gate for
the new locks in the Pacific side has been in-
stalled, marking another important milestone
for the Panama Canal Expansion Program.
Overall, the Canal expansion is currently 85 per-
This gate is the first of eight gates that will
be installed in the new locks at the Pacific side
of the waterway. The steel rolling gate is 8 me-
ters wide, 57.6 meters long and 22.28 meters in
height, weighing 2,300 tons.