Pitchcare Classifieds SPORTS SURFACE CONTRACTORS
Philip Dixon Contractors Ltd Established 1978
Sportsturf Drainage Specialist Drainage Construction Renovation Slitting Banding Maintenance
Investigating tee construction materials with an intact soil corer at Fulwell Golf Club
drains should be placed in order to achieve an adequate degree of drainage in natural soil. It requires the input of the hydraulic conductivity of the soil above and below the pipe depth, and one would imagine that this was directly relevant to sports pitch development.
The science behind the equation was, however, founded on agricultural principles, not on those of sportsturf management. In particular, the equation considers the soil properties of the material above the level of the pipe drain installation as a whole and as a single entity. In sports turf situations, of course, this region is extremely variable and cannot be defined in such a simplistic way.
Nevertheless, Hooghoudt provides a basis from which to start building a more complex model. Such a model might incorporate the finer points of sports pitch construction, for example the different values of hydraulic conductivity of topsoil and subsoil, the effects of treatments such as sand banding or the incorporation of a sand carpet, the use of rootzone materials or other amendments and soil structural factors, and the effects of treatments such as verti- draining or slitting.
The Hooghoudt equation was developed in 1940. We’re also looking at the Kozeny-Carman equation which relates particle size distribution to hydraulic conductivity and was developed in 1958. This, in turn, was a refinement of the Hazen equation which does a similar thing and was developed when King Edward VII was on the
throne before World War I!
The science behind artificial sports pitch construction, due to its much simpler nature, is now very well understood. Moreover, it is understood in exactly these terms relating to the properties of soils and aggregates; total pore space, CBR values, subsoil infiltration rates etc. Such pitches may be designed, specified and constructed with little doubt as to the outcome in terms of success or failure as a consequence of design principles applied in the context of individual sites. The costs associated with designs may also be accurately predicted long before any work has taken place on the ground, and this is a major consideration for all clients.
For the same to be true of natural turf surfaces, the equivalent fundamental principles need to be defined and applied in exactly the same way. The variability of outcome due to unforeseen factors, previously defined as ‘natural’ phenomena (and therefore not to be fully understood), need to be eliminated in order that natural turf systems may become, once more, the preferred playing surface for most sports. This is very difficult to do, because the factors concerned are so very complex.
Soil and growing media are hard to understand fully, but the industry must not lose sight of the need to keep doing this if sport on natural grass is to continue at the highest levels.
Dr Tim Lodge
www.agrostis.co.uk
Tel 01772 877289 (Preston, Lancs) Email:
info@dixondrainage.co.uk www.dixondrainage.co.uk
SPEEDCUT CONTRACTORS LTD
A professional service for all Sportsturf:
• Drainage • Construction • Renovation
Oxford 01865 331479
www.speedcutcontractors.co.uk
SPORTS TURF DRAINAGE AND CONSTRUCTION
NATIONWIDE SERVICE
www.turfdry.com
Contact: Melvyn Taylor
Office: 01283 551417 Mobile: 07836 259133 Email:
melvyn@turfdry.com
Sportsfield Construction Drainage Schemes Renovations & Improvements Cricket Specialists
Tel: 01529 455757 Fax: 01529 455775 e-mail:
steve@stevenpask.co.uk
www.stevenpask.co.uk
SPORTS EQUIPMENT
SPRAYERS
GOALS MAKE GAMES. WE MAKEGOALS.
TALK TO MARK HARROD 01502 710039
www.markharrod.com
WWW.SPORTSMARK.NET THE TOTAL SPORTS PROVIDER
Sports Ground and Golf Course Furniture
Training Equipment • Bootwipers • Shelters Groundsman’s Equipment
Construction/Installation Service for: Bowling Greens, Wickets and Cages, Sportshalls, Throwing Cages, Jumping Pits and Ball Courts
CALL MIKE OR JULIE NOW! T 01635 867537 F 01635 864588
SALES@SPORTSMARK.NET
Goals • Nets • Cages • Wickets
Soil structure sampling equipment
www.pitchcare.com DECEMBER/JANUARY 2014 PC 147
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97 |
Page 98 |
Page 99 |
Page 100 |
Page 101 |
Page 102 |
Page 103 |
Page 104 |
Page 105 |
Page 106 |
Page 107 |
Page 108 |
Page 109 |
Page 110 |
Page 111 |
Page 112 |
Page 113 |
Page 114 |
Page 115 |
Page 116 |
Page 117 |
Page 118 |
Page 119 |
Page 120 |
Page 121 |
Page 122 |
Page 123 |
Page 124 |
Page 125 |
Page 126 |
Page 127 |
Page 128 |
Page 129 |
Page 130 |
Page 131 |
Page 132 |
Page 133 |
Page 134 |
Page 135 |
Page 136 |
Page 137 |
Page 138 |
Page 139 |
Page 140 |
Page 141 |
Page 142 |
Page 143 |
Page 144 |
Page 145 |
Page 146 |
Page 147 |
Page 148 |
Page 149 |
Page 150 |
Page 151 |
Page 152 |
Page 153 |
Page 154 |
Page 155 |
Page 156