Building a Jencks/Wilkie type landform...in miniature!

I am doing some research on the ins and outs of building a series of either; wide, circular terraced steps covered in lawn or a banked (440mm total height) mound also covered in lawn. The back will be planted up to/not seen so can be steeper.

With the bank version I'm trying to find info about steepest angles for safe lawn mowing(!) and also retaining. CAN anyone point me to a good source of info? 

Has anyone got first hand war stories/lessons learned they might share?

all info welcomed

Tags: Charles, Jencks, Kim, Wilkie, construction, landform, lawn, mounds, terracing, turf

Views: 161

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PRO MemberPermalink Reply by Phil Voice on May 31, 2012 at 14:30

Hi Rosalind

I've found this on the HSE website (it's written by the Landscape Group from a commercial perspective but having reviewed the degree of slopes mentioned I'd say it's still relavent.:

  • Slopes of up to 15 degrees managed through normal maintenance methods using ride‐on machines with specific risk assessment.
  • Slopes of 16 to 20 degrees cut using approved pedestrian machines in line with site specific risk assessments.
  • Slopes of 20 – 30 degrees cut with specialist equipment only, pedestrian banks mower, brush cutter and only with a site specific risk assessment.
  • Slopes of over 30 degrees to be cut with side‐arm flail or remote control mower only, no pedestrian based operations.

http://www.hse.gov.uk/aboutus/meetings/iacs/aiac/apg/280710/3-3-1-m...

Permalink Reply by Lara Jane Hurley on June 7, 2012 at 23:13

Don't end up like this...

Permalink Reply by Rosalind Rosewarne on June 8, 2012 at 17:58

Thanks for the info Phil, luckily it won't be a ride on mower (garden way too small to warrant this!).

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