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SmartArch Lighting / Daylight / Material Reflection Calculator
Term note: E_avg is average illuminance; U0 is illuminance uniformity; UGR is discomfort glare rating. CU is coefficient of utilization and MF is maintenance factor. For materials, ρ is reflectance, τ is transmittance, α is absorptance, gloss is surface shine and solar reflectance is used for façade/roof glare and heat review.
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Not a building permit, zoning approval, certificate of occupancy or AHJ approval.
Local code / standard reference — Missing
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Term note: E_avg is average illuminance; U0 is illuminance uniformity; UGR is discomfort glare rating. CU is coefficient of utilization and MF is maintenance factor. For materials, ρ is reflectance, τ is transmittance, α is absorptance, gloss is surface shine and solar reflectance is used for façade/roof glare and heat review.
Formulas: E_avg=(N×Φ×CU×MF)/A; U0=E_min/E_avg; DF=Ei/Eo×100; ρ_avg=Σ(Aᵢ×ρᵢ)/ΣAᵢ; ρ+τ+α=1; R=D−2(D·N)N.
Daylight values are preliminary indicators; full EN 17037 / climate-based compliance requires project-specific simulation and expert review.
Formulas: E_avg=(N×Φ×CU×MF)/A; U0=E_min/E_avg; DF=Ei/Eo×100; ρ_avg=Σ(Aᵢ×ρᵢ)/ΣAᵢ; ρ+τ+α=1; R=D−2(D·N)N.
Daylight values are preliminary indicators; full EN 17037 / climate-based compliance requires project-specific simulation and expert review.
