Technical Koro TopDrain


Sand slitting a driving range


One-pass surface drainage system


forces in the rootzone. Water movement will only occur when the height of saturated water reaches a critical depth. The depth of saturated water required to produce gravitational movement is dependent upon the texture of the rootzone. The finer the rootzone, the deeper it needs to be to obtain gravitational water movement. Frequently, this critical


tension is in the range 150- 300mm. Perched water table constructions often fail when the depth of rootzone is less than the critical tension of the material used. Most bowling greens are built


with rootzones of 150-200mm in depth and sometimes less. Theoretically, these greens will be permanently saturated during wet times of the year. The movement of water


between the rootzone and the


lower, coarser layer is also influenced by the relationship between the particle size distribution of the materials. This is called the ‘bridging factor’. If there is too much variation in the particle sizes, water will not move from one to the other.


Again, this is due to the


adhesive and cohesive forces present in the pores of the two materials at the interface. Speedcut’s Barry Pace has


years of experience and has seen every type of sportsturf problem. He concludes; “Careful analysis of soil conditions and specific area problems will result in a detailed outline of the work required.” “Every sportsturf situation


has its own unique drainage solution. No two situations are the same.” Article written by Mike Beardall, Oakfield Media


 


 call: +44 (0)1260 224568


email: info@campeyturfcare.com web: www.campeyturfcare.com


Drainage experts


Design & installation Primary pipe systems Sand slitting Gravel banding Ground breaking


The AFT WhizWheel being used for sandslitting at Eastbourne Borough FC


01722 716361 • enquiries@mjabbott.co.uk www.mjabbott.co.uk


PC APRIL/MAY 2014 I 121


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