Box Hill Bridges

Managing a clay soil to support a model railway in suburban Box Hill, Victoria, Australia 

vic-gs-boxhill-003bcompvic-gs-userectrain-001bDescription:          nondescript eastern suburban garden soil
a clay base to which has been added loam and mulch
(i.e. it is an anthroposol)

Location:               small, flat suburban backyard in the hillier eastern suburbs of Melbourne

Values of this urban soil:
– Foundation for my backyard model railway,
vic-gs-manmovement-002bwcomp– using my engineering skills for pleasure
– also pleasure in our home and garden

Challenges from ground movement for constructing an outdoors permanent model rail track:
1 Moisture from rain or watering can cause swelling of the soil, followed by drying,
– which cause small movements of the soil, and track laid upon it, up or down
– Which take the track out of alignment and can cause derailments
2 Plants roots growing from fine threads to pencil thickness can have the same effect

Management strategies for using this soil for bridge and arch foundations
1 Deep solid brick foundation – Columns sit on brick foundations laid at deeper than 20cm below the surface where moisture does not impact soil
2 Flexibility – Some adjustable columns can be moved vertically in response to soil movements

See more about:
– about the engineering of constructing bridges in this pdf soil for external model structures  and on LN as post
– a terradome constructed of clay, visit the Garden of Earthy Treasures Soil Selfies at Dimboola, Australia
natural walls to hold soil for family farming on steep slopes, see the Alpine Koute de Tyon, from the Savoie, France

Credits: G. S., F I E Aust, of Box Hill gives permission for these photos and information to be used under a (cc) license 2015
Editing and page created by Jeanie Clark, enviroed4all®, Warracknabeal, for use in education under a (cc) licence 2015

return to Soil Selifes location page

page set up 31 October 2015, updated 9 January 2016