The document describes Retem, a 3D steel grid system used for land stabilization applications. The steel grid is made of galvanized steel strips formed into a three-dimensional web. It is used to reinforce concrete for applications like ditches, canals, spillways, and slopes. The steel grid provides reinforcement and flexibility, allowing structures to be built in difficult terrain. Over 1.5 million square meters have been installed with no repair requests. It provides a cost-effective solution for long-lasting erosion control and land stabilization.

1. Retem Applications for Land Stabilization Leo Toledano – CEO RETEM 3D Steel Grid Ltd.

2. Topics Retem Grid description and specifications Stabilization with concrete: Ditches and water ways Agricultural canals Spillways Inlets and outlets Stabilization with rock and soil. Advantages of Retem in drainage installations.

3. Retem Grid description and specifications

4. The 3-D Steel Grid is a three dimensional web made of galvanized steel deployed on two levels of parallel steel strips linked by oblique ribs without welding points.

5. Pallet of Retem 3D steel Grid panels Pallets of 160 panels – 3.2 x 1.3 cm each. Total area 500 m 2 , total weight 1.2 tons. Height varies according to designer requirements from 4 cm to 8 cm. Steel thickness is 1.40 mm. Weight per square meter: 2.25 kg.

6. Main applications in erosion control Reinforcement for concrete lining JK Spillway

7. Reinforcement for concrete lining Waterway Construction Method

8. Retem Panels Brought to Working Site

9. Worker Laying Panels

10. Stake Insertion

11. 3D Grid with Pressure Hole

12. Concrete Filling Requirements For 4 cm high grid, 8 cm. thick concrete (covering of steel, 2 cm on each side). For 8 cm high grid, 12 to 14 cm thick concrete (covering of steel, 2 to 3 cm on each side).

13. Spreading the Concrete

14. 10 Years of Experience Over 1,500,000 square meters of lining. Not a single repair request has been registered. Ditches in a US Army facility

15. Flexible Adaptation to Ditch Contour

16. Ditch on Cracked Rock Shallow ditch lining prevents water infiltration through cracked rock and weakening of the road pavement.

17. Narrow Steep Sides Retem is highly flexible. This allows the building of narrow water works in rural areas.

18. 70 Foot Wide Waterway

19. Typical Rough Finish Colored Texture

20. A Rough Finish Retaining Wall

21. River Bank Protection 3D steel grid flexibility allows to build reinforcement belts as an integral Part of the construction by folding the grid.

22. Reinforcement for Concrete Structure Spillways

23. Spillways The steel grid provides reinforcement for the chute and its belts in one monolithic structure.

24. Inlet and Ditch

25. Rock Filling on Reservoir Bank

26. Stabilizing collapsed river banks Seis, Italy, 2000

27. Slopes under a road Bayern, Germany 3. Vegetalisation (seeds and fertilizers) 2. Inserting stones and soil 1. Anchoring the 3D grid

28. Panel installed for Soil Filling

29. Same Slope after One Year

30. Used with anchors and projected concrete, 3D web provides long lasting protection to hewn hillsides. Outstanding results are obtained by use of Retem 3D grid in erosion prevention. Spillways designed with 3D grid in all lengths and inclinations are built in a single operation without using wood frames. Can be implemented in the most difficult soil and in the most extreme topography. Fast execution. Large waterways and narrow canals are being stabilized with 3D grid lining. Long-lasting and full protection. No requirements for skilled workers. Low cost of construction. Slopes of very steep inclination are easily treated. No maintenance cost. 3D Grid in Land Stabilization

31. Other Applications

32. Panels are held together using staples. Straightened by horizontal reinforcement. Lined on both sides with a steel net. Filled with a concrete pump from bottom to top. Finished by traditional means. Building Method

33. Typical Wall Reinforcement

34. Internal Partitions

35. Retem 3D grid at Euro-Disney

36. 3D grid is preformed to radius of the tunnel The grid is fixed with or without LDPE sheets sealing against water infiltration. Filled with projected concrete. Lining is continuous in rock soil. Lining is made between steel beams in soft soils. 3D Steel Grid in Tunnels

37. Grid Laying in Tunnel

38. Finishing Tunnel Lining

39. 3D Grid in Rehabilitation of Old Sewage Conduits 3D grid is preformed to radius of the pipe. Installed against pipe wall qualities. Filled with projected concrete.

40. Casting Concrete on Sewage Pipe

41. Houses, walls, and fences using mud, mixtures of mud and straw, or mud and cements may provide cheap housing solutions 3D Grid Filled with Local Materials.

42. Concrete/Mud Filling for 3D Steel Grid Using mud, mixtures of mud and straw, or mud and cements with a 3D Steel reinforcement may provide cheap housing solutions in poor areas.

43. Retem 3D Steel Grid Ltd. P.O.Box 14164 Jerusalem 91141 Tel: 972 2 6283474 Fax : 972 2 6274067 E-mail: retem@retemsteel.com