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task library
built templatepipe-hydraulicswith-tool

Pipe Velocity Check

Calculates full-bore pipe flow velocity from V = Q/A and checks compliance against minimum and maximum velocity limits specified in AS/NZS 3500.1 for water supply, gravity sewer, stormwater, and fire service pipes. Ensures velocities remain within self-cleansing and scour-prevention bounds for the given service type.

inputs

3 fields

context

4 archetypes

engine

with-tool

outputs

2 scored fields

contract fields

Parameter Map

3 inputs to 2 scored outputs

  • pipe_diameter_mm

    float

    Internal pipe diameter D

    15 to 1200mm

  • flow_rate_l_s

    float

    Volumetric flow rate Q

    0.1 to 2000L/s

  • service_type

    enumfrom archetypehidden in hard

    Pipe service type per AS/NZS 3500.1

    water_supplysewer_gravitystormwaterfire_services
velocity_m_stol 0.03

Flow velocity V (m/s)

compliancetol 0.01

Velocity compliance (1.0 = within limits, 0.0 = outside limits)

visibility contract

Difficulty Ladder

all_giveneasy

All parameters given, water supply only, small residential pipes

all fields visible
all_givenmedium

All parameters given, any service type and pipe size

all fields visible
partialhard

Service type hidden, agent must infer from site description

service_type

scenario bands

Archetype Atlas

residential_water_supply

2 contexts

Residential water supply reticulation in PVC or copper

pipe_diameter_mm15 to 100
flow_rate_l_s0.1 to 10
service_typewater_supply

sydney-suburban-estate / brisbane-residential-infill

trunk_sewer

2 contexts

Trunk gravity sewer main in reinforced concrete or vitrified clay

pipe_diameter_mm225 to 900
flow_rate_l_s10 to 800
service_typesewer_gravity

melbourne-trunk-sewer / adelaide-catchment-sewer

stormwater_main

2 contexts

Stormwater drainage main in reinforced concrete pipe

pipe_diameter_mm300 to 1200
flow_rate_l_s50 to 2000
service_typestormwater

perth-urban-drainage / darwin-monsoon-drainage

fire_hydrant_main

2 contexts

Fire hydrant main in ductile iron or HDPE

pipe_diameter_mm100 to 300
flow_rate_l_s5 to 150
service_typefire_services

canberra-commercial-precinct / hobart-industrial-park

rendered task

Generation Preview

sydney-suburban-estate-residential-water-supply-preview

difficulty
hard
visibility
partial
archetype
residential_water_supply
site context
sydney-suburban-estate
instruction excerptpipe-velocity-check_calc.py

visible fields

  • pipe_diameter_mm15 to 100 mm
  • flow_rate_l_s0.1 to 10 L/s

withheld schema

service_typevelocity_m_scompliance
Residential water supply reticulation in PVC or copper. sydney-suburban-estate. Required outputs: velocity_m_s, compliance