HYDRO-AGRICULTURAL DEVELOPMENT PROJECT

OF THE IRRIGATION PERIMETER OF DAR KHROFA

REGIONAL OFFICE FOR AGRICULTURAL DEVELOPMENT OF LOUKKOS

OWNER ORMVA Loukkos

CONTRACTOR STAM

DURATION 2013 – Ongoing

APPLICATION Irrigation

MISSION

As part of the hydro-agricultural development project of

the irrigation perimeter of Dar Khrofa, located in the

province of Larache, AMITECH MAROC’s mission is the

supply and installation of GRP pipes for the conveyance

and distribution of raw water.

The implementation of the Dar Khrofa Dam and the hydro

agricultural development at its downstream are part of

efforts to pursue the development and enhancement of

the main economic activity of the region of Loukkos :

Agriculture. This development will be achieved through

the mobilization of new surface water resources and the

promotion of irrigated agriculture in the Green Morocco

Plan. The Dar Khrofa Dam, with a capacity of 480 million

m³, will regularize 140 million m³ per year, of which 130

million m³ / year as an agricultural annual allocation, to

ensure the irrigation perimeter.

The work area is part of the irrigation perimeter of Dar

Khrofa which consists of 12 sectors, with a total net area

of approximately 21 000 ha.

The GRP pipes used for this project have a total length of

99,50 Km, nominal diameters from 400 mm up to 3000

mm and a stiffness of 5000 N/m².

CASE

STUDY

Connection of the dam and regulating structure Penstock Tunnel

PROJECT INFORMATION

The works conducted are :

Digging a tunnel with 1200 m of length and 3.50 m of

diameter.

Supply, installation and sealing of a DN3000 mm GRP

pipe inside the tunnel.

Filling the space between the tunnel and the GRP

pipe with concrete.

l

GRP Pipe Details – Tunnel

TOTAL LENGTH 1,23 Km

DIAMETER DN 3000 mm

PRESSURE PN 10 bars

STIFFNESS SN 5000 N/m²

JOINT TYPES REKA

FITTINGS Elbow, Manholes,

Wye-Piece N°1

TRANSPORTED MEDIUM Raw water

INSTALLATION TYPE In the tunnel

STANDARDS AWWA C950 ; AWWA M45

ASTM D3517

PIPE TYPE Standard

WHY OUR PRODUCT ?

Competitive ; Resistance to

corrosion and abrasion; Light

weight ; Quick setup

Description Wye Piece N°1

The upstream Wye-piece is used for connection of two

DN1500 GRP pipes coming out of the dam and a DN3000

GRP pipe going towards the tunnel.

TOTAL LENGTH 10 m

DIAMETER DN 3000/1500/1500 mm

PRESSURE PN 10 bars

STIFFNESS SN 5000 N/m²

ANGULAR DEFLECTION 30°

JOINT TYPES Butt Wrap

Installation Details – Trench

TYPE Open trench

TRENCH WITDH 5,4 m

TRENCH DEPTH 7 m

NATIVE SOIL TYPE Soft Native soil

BACKFILL SOIL TYPE Extract excavations

THRUST BLOCKS Concrete coated parts

QUALITY MEASURES DURING INSTALLATION

Deflection measurements,

Compaction measurements

CASE

STUDY Connection of the dam and regulating structure Penstock Trench

PROJECT INFORMATION

The supply and installation of a penstock GRP pipe of

nominal diameter 3000 mm, connecting the downstream

exit of the tunnel and the block valve chamber.

Description Wye-Piece N°2

The installation of downstream bifurcation, which divides

the outgoing DN3000 pipe from the trench, into two

branches DN2200 (primary network for water supply).

TOTAL LENGTH 12,5 mL

DIAMETER DN 3000/2200/2200 mm

PRESSURE PN 10 bars

STIFFNESS SN 5000 N/m²

ANGULAR DEFLECTION 60°

JOINT TYPES Butt Wrap

GRP Pipe Details – Trench

TOTAL LENGTH 700 mL

DIAMETER DN 3000 mm

PRESSURE PN 10 bars

STIFFNESS SN 5000 N/m²

JOINT TYPES REKA

FITTINGS Elbow, Tees, Manholes,

Wye -Piece N°2

CASE

STUDY

Primary network for water supply of South

sectors

PROJECT INFORMATION

Supply and installation of pipes for the South Adduction

of the irrigation perimeter of Dar Khrofa. The adduction

pipelines carrying flow is 7,5 m3/s.

GRP Pipe Details

TOTAL LENGTH 24,6 Km

DIAMETER DN 1400/2000/2200 mm

PRESSURE PN 6 / 10 / 14 / 16 bars

STIFFNESS SN 5000 N/m²

JOINT TYPES REKA

FITTINGS Elbows, Tees, Flanges, Reducers

TRANSPORTED MEDIUM Raw water

INSTALLATION TYPE Buried

STANDARDS

AWWA M45

AWWA C950

ASTM D3517

PIPE TYPE Standard

WHY OUR PRODUCT ?

Competitive ; Resistance to

corrosion and abrasion ; Light

weight ; Quick setup

CASE

STUDY

Irrigation networks

DESCRIPTION

Supply and installation of GRP pipes and related works:

- Ouaed Cherkane - Bni Kmeh 2

- Vallée Makhazine - Maraa Kantra

- Koudiat Aabou - Reïssana Est

The carrying flow module adopted for the distribution

networks of these sectors is 0,94 l/s/ha.

GRP Pipe Details

TOTAL LENGTH 67,70 Km

DIAMETER DN 400/500/600/700/800/900

1000/1100/1200/1600 mm

PRESSURE PN 4 /6 / 10 / 14 / 16 bars

STIFFNESS SN 5000 N/m²

JOINT TYPES REKA

FITTINGS Elbow, Flange, Tees

TRANSPORTED MEDIUM Raw water

INSTALLATION TYPE Buried

STANDARDS

AWWA M45

AWWA C950

ASTM D3517

PIPE TYPE Standard

WHY OUR PRODUCT ?

Competitive ; Resistance to

corrosion and abrasion ;

Light weight ; Quick setup

Irrigation networks Substitution of existing pipes

DESCRIPTION

Replacement work of reinforced concrete pipes by GRP

pipes in the irrigation network of the sub-sectors A,

B1/B2 and E1/E2 falling within the R’Mel sector of the

Loukkos perimeter. The carrying flow module adopted

for the distribution networks of these sectors is 0,94

l/s/ha.

GRP Pipe Details

TOTAL LENGTH 5,30 Km

DIAMETER DN 400 / 500 / 600 / 1000 / 1100 mm

PRESSURE PN 16 bars

STIFFNESS SN 5000 N/m²

JOINT TYPES REKA

FITTINGS Elbow, Flange, Tees

TRANSPORTED MEDIUM Raw water

INSTALLATION TYPE Buried

STANDARDS

AWWA M45

AWWA C950

ASTM D3517

PIPE TYPE Standard

WHY OUR PRODUCT ?

Competitive ; Resistance to

corrosion and abrasion ;

Light weight ; Quick setup

Old reinforced

concrete pipe

New GRP pipe

CASE

STUDY