This document discusses the use of DuPont Typar geotextiles for road drainage systems. Typar is a nonwoven geotextile made of thermally bonded polypropylene filaments that functions as a filter, allowing water to drain through while retaining soil particles. It is used in road drainage projects to separate soils from aggregate stones in order to prevent clogging. Examples of projects using Typar geotextiles in Pakistan and other countries are provided.

1. Road
System
With Typar Geotextile

2. Table of Content
• Road Drainage Issues
• DuPont Typar Geotextile Material
• How Typar Geotextile Work
• Function of Geotextile
• Geotextile Drainage Projects in Pakistan
• Geotextile Drainage International Projects

3. Road Drainage Issues

4. Road Drainage Issues

5. Road Drainage Issues

6. Road Drainage Issues

7. Road Drainage Issues

8. DuPont Typar Geotextile Material
DuPont Typar is a nonwoven geotextile fabric
composed of thermally bonded continuous
polypropylene filaments. The fibre extrusion
process produces thousands of superfine
continuous filaments, which pass through a
DuPont patented “pre-stretch” stage. The
superfine tough filaments are directionally
oriented producing a fibre web sheet that is
then thermally and mechanically bonded.

9. H o w T y p a r G e o t e x t i le W o r k
• Failure of a drainage system is caused by the intermixing
of the free-draining aggregate materials with the
subgrade soil, which leads to clogging of the aggregate.
• TYPAR Geotextiles separate soil from the filter aggregate
stone, which minimizes intermixing, helping to maintain
the integrity of the drain.
• TYPAR Geotextile’s tensile strength, puncture resistance,
tear resistance, opening size and hydraulic properties
make it an ideal filter fabric for drainage systems.

10. Function of Geotextile

11. Filtration And / or Drainage
Filtration: The geosynthetic acts similar to a sand filter by allowing water to
move through the soil while retaining all upstream soil particles.
Function of Geotextile

12. Function of Geotextile
Filtration And / or Drainage
Filtration: Primarily geotextile holds the soil particle in place and allow the water
to filter through without hydrostatic pressure build up.

13. Installation Guide for Underdrain Construction
Function of Geotextile

14. Drainage of Water Below Road Pavement
Function of Geotextile
Interceptor Drain

15. Function of Geotextile
Blanket Drain
Drainage of Water Below Road Pavement

16. Function of Geotextile
Drainage of Water Below Road Pavement

17. Function of Geotextile
Blanket Drain
Drainage of Water Below Road Unpaved

18. Function of Geotextile
Section

19. G e o t e x t i l e D r a i n a g e
P r o j e c t s i n P a k i s t a n

20. Fishing Jetty, Surbandar, Gwadar
Geotextile Drainage Projects in Pakistan

21. Geotextile Drainage Projects in Pakistan
Marine Drive Part-1, Gwadar

22. Geotextile Drainage Projects in Pakistan
Marine Drive Part-1, Gwadar

23. Geotextile Drainage Projects in Pakistan
Marine Drive Part-2, Gwadar

24. Geotextile Drainage Projects in Pakistan
Marine Drive Part-2, Gwadar

25. Geotextile Drainage Projects in Pakistan
Marine Protection, Deep Sea Container Port, KPT

26. Geotextile Drainage Projects in Pakistan
Bohri Jamat Khana, Phase 8, DHA, Karachi
Gravel Placing at Typar Geotextile Gravel Placed at Typar Geotextile
Perforated Pipe PlacingPerforated Pipes

27. Geotextile Drainage Projects in Pakistan
Coastal Protection, Surbandar, Gwadar, Balochistan

28. Geotextile Drainage Projects in Pakistan
DHA Golf Club, Karachi

29. SUNA mid-point to Mall Khan Thebo
Road, Mirpur Khas District

30. SUNA mid-point to Mall Khan Thebo
Road, Mirpur Khas District

31. KESC Intake Channel Bin Qasim TPS

32. Reconstruction of Bagh Dheri Bridge
on River Swat, District Swat

33. Khadagzai Bridge on River Swat at
District Malakand

34. Zero Point Interchange Islamabad

35. Repair of Lane No. 4 at IJP Road Toll
Plaza Islamabad

36. Geotextile Drainage Projects in Pakistan
 Access road for Wind Power projects in areas with
high groundwater including Badin.
 Batkhela KPK
 The Aga Khan University Hospital Karachi
 Omar Associates Office Building PECHS, Karachi
 Lucky Textile Mills, Landhi, Karachi

37. G e o t e x t i l e D r a i n a g e
I n tern a ti o n a l P r o j e c t s

38. Geotextile Drainage International Projects
N-2 Motorway Luzern-Basel (SWITZERLAND)

39. Geotextile Drainage International Projects
Tramway Track renovation (PL)

40. Geotextile Drainage International Projects
North Sea Coast Line (DK)
340 000 m² Typar® SF40
used as drainage filter and
separation layer in the
construction of access roads
behind dikes

41. Geotextile Drainage International Projects
Carrick MacCross Bypass
Typar® SF32 for filtration in road drainage - Ireland

42. Geotextile Drainage International Projects
Poland Road Drainage Project

43. Geotextile Drainage International Projects
Poland Road Drainage Project

44. Geotextile Drainage International Projects
Poland Road Drainage Project

45. Thank You
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Matrixx Company
F-37/A, Block 4, Clifton, Karachi-75600
Tel: 021-5833127 to 29
Fax: 021-5833124
E-mail: matrixxco@yahoo.com
Web: www.matrixxco.net