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built templateretaining-wallswith-tool

Wall Bearing

Checks bearing pressure adequacy beneath a retaining wall base by computing the eccentricity of the resultant vertical load and applying Meyerhof's effective width method (B' = B - 2e). Compares the maximum bearing pressure on the reduced contact area against the allowable bearing capacity, using Meyerhof bearing capacity factors with depth corrections per AS 4678.

inputs

8 fields

context

5 archetypes

engine

with-tool

outputs

5 scored fields

contract fields

Parameter Map

8 inputs to 5 scored outputs

  • base_width_m

    float

    Base width of the retaining wall footing B

    1 to 6m

  • total_vertical_load_kn_per_m

    float

    Total vertical load on wall base per metre run V

    20 to 500kN/m

  • net_moment_knm_per_m

    float

    Net moment about base toe per metre run M

    10 to 800kN.m/m

  • soil_cohesion_kpa

    floatfrom archetypehidden in hard

    Foundation soil effective cohesion c'

    0 to 150kPa

  • soil_friction_angle_deg

    floatfrom archetypehidden in hard

    Foundation soil effective friction angle phi'

    0 to 50degrees

  • soil_unit_weight_kn_m3

    floatfrom archetypehidden in hard

    Foundation soil unit weight gamma

    14 to 23kN/m³

  • embedment_depth_m

    floatoptional

    Embedment depth of wall base below ground surface Df

    0.3 to 3m

  • allowable_bearing_capacity_kpa

    float

    Allowable bearing capacity of the foundation soil q_all

    50 to 600kPa
eccentricity_mtol 0.03

Eccentricity of resultant from base centre e (m)

effective_width_mtol 0.03

Meyerhof effective base width B' (m)

max_bearing_pressure_kpatol 0.03

Maximum bearing pressure q_max (kPa)

ultimate_bearing_capacity_kpatol 0.05

Ultimate bearing capacity q_ult (kPa)

factor_of_safetytol 0.03

Factor of safety against bearing failure FoS

visibility contract

Difficulty Ladder

all_giveneasy

All parameters given, stiff soil, low eccentricity expected

all fields visible
all_givenmedium

All parameters given, any soil type including soft clay

all fields visible
partialhard

Soil parameters hidden, agent must infer from site description

soil_cohesion_kpasoil_friction_angle_degsoil_unit_weight_kn_m3

scenario bands

Archetype Atlas

soft_nc_clay

2 contexts

Soft normally consolidated clay

soil_cohesion_kpa5 to 15
soil_friction_angle_deg0 to 5
soil_unit_weight_kn_m315 to 17

brisbane-alluvial / darwin-estuarine

medium_dense_sand

2 contexts

Medium dense sand

soil_cohesion_kpa0
soil_friction_angle_deg32 to 36
soil_unit_weight_kn_m317 to 19

perth-coastal / hunter-valley-alluvial

stiff_oc_clay

3 contexts

Stiff overconsolidated clay

soil_cohesion_kpa50 to 150
soil_friction_angle_deg5 to 15
soil_unit_weight_kn_m318 to 21

sydney-hawkesbury / adelaide-stiff / melbourne-basalt

dense_sand

2 contexts

Dense sand

soil_cohesion_kpa0
soil_friction_angle_deg36 to 42
soil_unit_weight_kn_m319 to 21

perth-coastal / cairns-coral

firm_clay

2 contexts

Firm clay

soil_cohesion_kpa20 to 50
soil_friction_angle_deg2 to 8
soil_unit_weight_kn_m317 to 19

brisbane-alluvial / melbourne-basalt

rendered task

Generation Preview

brisbane-alluvial-soft-nc-clay-preview

difficulty
hard
visibility
partial
archetype
soft_nc_clay
site context
brisbane-alluvial
instruction excerptwall-bearing_calc.py

visible fields

  • base_width_m1 to 6 m
  • total_vertical_load_kn_per_m20 to 500 kN/m
  • net_moment_knm_per_m10 to 800 kN.m/m
  • embedment_depth_m0.5 m
  • allowable_bearing_capacity_kpa200 kPa

withheld schema

soil_friction_angle_degsoil_unit_weight_kn_m3soil_cohesion_kpaeccentricity_meffective_width_mmax_bearing_pressure_kpaultimate_bearing_capacity_kpafactor_of_safety
Soft normally consolidated clay. brisbane-alluvial. Required outputs: eccentricity_m, effective_width_m, max_bearing_pressure_kpa, ultimate_bearing_capacity_kpa, factor_of_safety