TOPIC COLLECTION
Construction
A focused path through related explanations and calculation tools.
3 guides3 calculators
LEARN THE SYSTEM
Guides in this topic
01
ConstructionEstimate a concrete order without hiding the assumptions
Separate drawing dimensions, geometric volume, allowance and supplier constraints.
Guide · example · useful tools
02
ConstructionPlan trench quantities without treating excavation as a safe shape
Estimate spoil while keeping utilities, collapse protection, water and access as separate decisions.
Guide · example · useful tools
03
ConstructionSize the roof-drainage path from rainfall to safe discharge
Connect roof area and design intensity to gutters, outlets, downpipes and foundation drainage.
Guide · example · useful tools
USE THE NUMBERS
Calculators in this topic
Construction
Concrete volume and order allowance
Calculate geometric concrete volume and a separate ordering allowance.
Construction
Trench excavation volume
Estimate in-place and loosened spoil volumes for a straight trapezoidal excavation.
Construction
Roof runoff peak flow
Estimate peak roof runoff from connected area, rainfall intensity and a runoff factor.