TERRAFORCE The original, reversible, interlocking retaining wall block

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2 TERRAFORCE products can provide you with environmentally friendly earth retaining and architectural landscaping using mortarless and fully interlocking concrete retaining and terracing blocks. Erosion and sediment control of versatile and plantable nature. Retaining walls for any environmental circumstance. Benefits and features Aesthetics Obtainable in different sizes and colours Reversible units for variations on elevation Variable setback allows featuresque appearance Design flexibility - corners, curves and stairs Plant supportive rounded or rock - face elevation Transport Design Design charts and manuals supplied Free design software - Gravity or composite earth retaining options Specification test results available I.C.B.O. evaluation report completed* 80 project profiles on demand Instant design & planning info - Easy planning with one - block system Proven product for 25 years Low transport cost - light weight hollow units Easy handling for remote site applications Installation Installed using standard industry procedures No intricate installation manuals required Special units and connectors not required One - block system. Low labour & material cost 2

3 Initially an importer and distributor of w iremesh gabions from Spain, Terraforce became involved in the construction of gabion retaining w alls and erosion control measures in This led to the realisation that in many instances gabions are not cost effective or practical. After considering various alternative methods that w ere know n at that time, it w as decided to design a more versatile one block system. Gabion wall built with Terra Gabions during

4 Low terrace walls with steps during construction 4

5 7 m high walls supporting a driveway 5

6 Terraforce retaining blocks can be used as part of either a gravity system or as the fascia of a geosynthetic reinforced segmental retaining wall structure or as a fascia for a cement stabilized backfill. Mass Gravity Retaining Walls Gravity retaining walls rely on their self-weight to resist lateral earth pressure, and such walls have been in use for centuries. In a gravity system the Terraforce masonry units can be stacked several courses deep to provide support to the forces imposed by the retained soil; the weight and geometry of the stacked units prevent the constructed wall from sliding on its base or at an intermediate height, toppling over, or rotating out of position. 6

7 Composite retaining wall with L18 split face blocks 7

8 Geosynthetic reinforced soil segmental retaining walls utilize reinforcing sheets of geogrid or suitable woven geotextile which are attached to the fascia and are embedded in a body of engineered fill. The integrated nature of the fascia and the abutting large body of reinforced soil thereby supports the applied earth forces. In this case the 'gravity' component of the retaining wall is provided by the reinforced soil mass acting as a monolithic unit. By virtue of their inherent flexibility, such walls are able to accommodate movement and some settlement without suffering distress. This makes the system particularly suitable for construction on (engineered) filled ground or in areas which may be prone to settlement effects. Also, the cost and difficulty of construction of such retaining walls is minimized as the need to provide full frost wall foundations can be waived in many circumstances. 8

9 Bi-Annual CMA Awards Terraforce has secured the Premier Bi-annual Award in the retaining category from the Concrete Manufacturers Association in the years 1998, 2000, 2002, 2006 and 2008 as well as winning several National and Regional Awards at each event. Mixed pattern 9

10 1) EROSION CONTROL MEASURES Since 1986 Terrafix erosion control blocks have proved themselves as a most versatile and environmentally sound product. They were designed to provide a cost effective, flexible lining to protect against wind and water erosion. Recently the new Terracrete Exec. block was added to our range of products. Terracrete is even more cost effective, and can be specified as a hard lawn - drive over for light vehicles, when provided with a well designed subbase. Terracrete has been designed specifically so that it can be installed with ground anchors for application with high water velocities. Both these durable concrete units, in combination with the original shape retaining blocks, may be used in most saline or polluted conditions, interlock laterally and offer a secure yet flexible lining. The products have been specified in applications, designed to charge our dwindling ground water reservoir and to provide a perfect regime for establishing vegetation. 10

11 Small stream and inlet 11

12 Silt traps incorporating boulders 12

13 The end result 13

14 Culverts large and small Segmented concrete products are rapidly gaining in popularity over other methods and in combination with vegetation cover are more durable, versatile and cost effective. From the environmental point of view this combination stands out head and shoulders above other earth retaining methods, such as wood, metal-based materials and rock rip rap. 14

15 L13 and Terrafix erosion control blocks to stabilise a fast flowing river bed and embankments 15

16 The project a few years later 16

17 Prevent washout of fill with coarse gravel 17

18 Storm water detention 18

19 Lakeside steps and walls 19

20 Founded at low water mark 20

21 12 years later 21

22 Beachfront protection at Durrat Al Bahrain, Persion Gulf 22

23 Slope Rehabilitation 23

24 2008 CMA Awards Trophy Winner 24

25 Terracrete parking area with partial grass cover 25

26 Terracrete Road surface in Namibia 26

27 Strong Eco-surface for a boat-lifting facility 27

28 Terracrete road erosion control in rural areas Smooth round or flat face 28

29 2) FEATURES AND DETAILS A living wall: The unique design allows you to make plants a part of your wall. Durability: Concrete will not rot and weaken over time, and no chemical preservatives are required. Mortarless interlocking systems: The units are simply stacked up without mortar to provide a cost effective, do-it-yourself system. Layout flexibility: The half moon interlock easily handles convex and concave curves, and the wall angle can vary from vertical to shallow slopes. You can create steps by reversing the block. Colours and textures: Use the blocks round or flat face for the wall front. Consult your local supplier about available colours. 29

30 DETAILS FEATURES OF TERRAFORCE RETAINING UNITS A terraced garden 30

31 A terraced garden with good use of plants 31

32 A terraced garden with stairs 32

33 Composite wall with terrace 33

34 Architectural feature concrete filled 34

35 Seductive curves 35

36 Various design options 36

37 A beautiful desertscape 37

38 Pool and composite retaining 38

39 Terralite D.I.Y. block and gardenscapes 39

40 Gardenscapes - Terralite 40

41 Low wall with Terralite 41

42 Unlimited versatility 42

43 3) STAIRS, RAMPS AND HANDRAILS Unlimited curves affix handrails 43

44 L18 stairways and seating 44

45 And the most attractive 45

46 L18 emergency escape route 46

47 Stand alone stairs with railing 47

48 Walkway to lake 48

49 Retaining, stairs and ramp 49

50 Retaining with 4x4 block stairs 50

51 Retaining wall and offset stairs 51

52 Project ready for planting 52

53 A grand stairway Multi 4x4 and L13 blocks 53

54 Retaining wall and stairs bordering a tennis court 54

55 Various stairways 55

56 Stairs leading to the beach 56

57 Staircase in Dubai 57

58 4) SEATING ARENAS Urban renewal low cost pavillion seating 58

59 Amphitheatre for 2000 people - Turkey 59

60 Seating arenas 4x4 Multi block 60

61 500 seater arena 4x4 multi block 61

62 4) ROADSIDE AND DRIVEWAY SUPPORT AND PROTECTION Toe wall close to the sea with hardy plants established 62

63 Driveway support 63

64 Commercial roadside application 64

65 Complete cover for a softer look 65

66 A six meter high noise barrier 66

67 Award winning noise barrier three undulating terraces 67

68 The same installation a few months later 68

69 Rock face L11 69

70 Composite walls in Istanbul 70

71 5) HEAVY GRAVITY AND COMPOSITE RETAINING L13 blocks delivered to site NOT FOR THE FAINT HEARTED! 71

72 The completed wall with vegetation 72

73 Geogrid folded into the blocks alternatively clamped between blocks 73

74 Reinforced half round supporting the pool 74

75 After completion 75

76 View from pool 76

77 A similar installation 77

78 9m high installation at commercial development 78

79 The award wining installation two years later 79

80 Award winning installation CMA awards

81 Clover interchange in Doha, Qatar Stairways and mixed elevation 81

82 Road interchange in Dubai 82

83 Pool and composite retaining 83

84 Heavy duty composite roadside retaining 84

85 L11 6 m high composite wall - award winning project 85

86 We offer Green Solutions 86

87 Terraforce offers services of selected approved retaining wall contractors for professional quotations and installations of retaining blocks. By using these recommended contractors the public has peace of mind that his or her contract will be carried out professionally as recommended by Terraforce, and that the contractor will give a proper guarantee for any come backs that could occur. Please note that type of blocks available will vary from area to area. Phone for more information or visit the website for a list of contractors in South Africa. BE WELL PREPARED...with TERRAFORCE 87