Professional soil bearing capacity, pavement design, root protection, and traffic loading tools for landscape architects. Calculate subgrade strength, permeable pavement load capacity, wheel load stress distribution, vehicular access over planted areas, and root protection zones for trees under paving.
| Bearing Factor | Value | φ Used | Description |
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| Requirement | Required | Available | Status |
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CalcType: Professional Soil Load & Traffic Design Solutions — This comprehensive soil load and traffic calculator suite is engineered to support evidence-based geotechnical design, pavement engineering, root protection, and vehicular access planning for landscape architects, civil engineers, and project teams. The Bearing Capacity module applies Terzaghi’s (1943) general bearing capacity equation with shape factors for strip, square, and rectangular foundations, aligned with BS 8004:2015 and Eurocode 7 (EN 1997-1). The Pavement Design module applies UK Highways England HD 26/06 / DMRB thickness design methodology using CBR-based subgrade strength and cumulative Equivalent Standard Axles (ESA), with reference to HA 74/07 for light traffic routes. The Wheel Load & Stress module calculates tyre contact area and vertical stress distribution using Boussinesq (1885) elastic theory for homogeneous semi-infinite media, as applied in pavement and foundation engineering practice. The Permeable Paving module follows CIRIA C753 (SuDS Manual) and BRE 365 guidance for infiltration-based permeable pavement design, including stormwater storage reservoir sizing. The Root Protection module applies BS 5837:2012 (Trees in Relation to Design, Demolition and Construction) for Root Protection Area (RPA) and Structural Root Zone (SRZ) calculation, with construction encroachment assessment. The Vehicle Access Zones module evaluates route width, headroom, gradient, and turning circle requirements against Approved Document B (Building Regulations 2010), BS 9999:2017, Manual for Streets 2 (MfS2), and local highway authority standards. Technical Disclaimer: All geotechnical calculations, pavement thicknesses, stress distributions, permeable paving designs, root protection assessments, and vehicular access dimensions provided by this calculator are intended for preliminary design and feasibility assessment only. They do not constitute a formal Geotechnical Design Report (GDR), Pavement Design Report, Arboricultural Impact Assessment (AIA), or Transport Statement for planning or regulatory submission. All final structural, geotechnical, and highway designs must be verified by a qualified geotechnical engineer (CEng / FGS), chartered civil engineer (CEng MICE), or registered arboriculturalist (RCA) as appropriate. CalcType assumes no liability for structural failure, pavement failure, tree damage, or planning non-compliance arising from the use of these estimation tools.