Work out dead load instantly with clear inputs, formula shown and shareable results.
Dead load is the permanent weight of the construction: the structural slab at about 25 kN/m³, cement screed and tiling at roughly 21 kN/m³, plus an allowance for suspended ceilings, ductwork and lighting. Each component is thickness in metres times unit weight, giving kilopascals directly.
Component loads
kPa = thickness m x unit weight kN/m³
Total
Dead load = slab + screed and finishes + services allowance
Preliminary estimate only. Dead loads must be confirmed against actual construction build-ups and the loading code in force.
kPa = thickness m x unit weight kN/m³. Dead load is the permanent weight of the construction: the structural slab at about 25 kN/m³, cement screed and tiling at roughly 21 kN/m³, plus an allowance for suspended ceilings, ductwork and lighting.
Fixed partitions are dead load and should be assessed on their actual line weight. Demountable partitions are usually covered by an equivalent uniform allowance in the live load.
This calculator takes 4 inputs: Slab thickness, Screed and floor finish thickness, Ceiling and services allowance, Concrete unit weight. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.