How the
calculations
are derived

Every figure traces back to a published document. Nothing here is a house rule dressed up as a standard, and where a value is a planning assumption rather than a requirement the app says so on the face of the report.

This is not a certified or independently audited product, and it does not replace a qualified designer’s judgement.

Image and display

Display sizing (BDM & ADM): ANSI/AVIXA V202.01 (DISCAS); Display Size (AVIXA DISCAS)Display Viewing Angle Projector Brightness & Throw DvLED Pixel Pitch Video Wall Builder
Image contrast, all four viewing categories: ANSI/AVIXA V201.01 (ISCR); Display Size (AVIXA DISCAS)Display Viewing Angle Display Brightness (AVIXA ISCR)Projector Brightness & Throw DvLED Pixel Pitch Video Wall Builder
Performance verification: ANSI/AVIXA D401.01; Display Size (AVIXA DISCAS)Display Viewing Angle Display Brightness (AVIXA ISCR)Projector Brightness & Throw DvLED Pixel Pitch Video Wall Builder Video Wall Controller Capacity Camera Distance (IEC 62676-4 DORI)DSP System & Gain Structure
Commissioning and acceptance: ANSI/AVIXA D402.02; Display Brightness (AVIXA ISCR)Video Wall Builder Video Wall Controller Capacity
Projected image and screen luminance: SMPTE EG-18; Projector Brightness & Throw
Camera detect, observe, recognise, identify: IEC 62676-4 (DORI); Camera Distance (IEC 62676-4 DORI)

Audio

Coverage uniformity in listener areas: ANSI/AVIXA A102.01; Speaker Design Speaker & Coax Cable Sizing Audio Data Rate & Wavelength
Dynamic range in listener areas: ANSI/AVIXA A104.01; Speaker Design DSP System & Gain Structure Audio Data Rate & Wavelength
Background noise criteria: ANSI S12.2; Speaker Design DSP System & Gain Structure
Reverberation and intelligibility: ISO 3382; Speaker Design DSP System & Gain Structure
Loudspeaker sensitivity and rated power: IEC 60268; Speaker Design Speaker & Coax Cable Sizing DSP System & Gain Structure Audio Data Rate & Wavelength
Surround loudspeaker layout: ITU-R BS.775-3; Dolby Atmos; DTS:X; Auro-3D; Speaker Design

Network and transport

Uncompressed video over IP: SMPTE ST 2110; AVoIP Bandwidth & Switch Topology Video Wall Controller Capacity IP Table Generator
Seamless redundant streaming: SMPTE ST 2022-7; AVoIP Bandwidth & Switch Topology
Transport signalling: SMPTE ST 2028; AVoIP Bandwidth & Switch Topology Video Wall Controller Capacity
PoE classes and budgets: IEEE 802.3af / at / bt; PoE Budget Wi-Fi Coverage & Capacity
Wireless standards: IEEE 802.11; Wi-Fi Coverage & Capacity
Indoor radio propagation: ITU-R P.1238; Wi-Fi Coverage & Capacity
ICT design for intelligent buildings: ANSI/BICSI 007-2024; AVoIP Bandwidth & Switch Topology PoE Budget Wi-Fi Coverage & Capacity IP Table Generator Rack Builder (EIA-310-E)Rack Cooling (ASHRAE)UPS Sizing
Wireless LAN design: ANSI/BICSI 008-2024; Wi-Fi Coverage & Capacity IP Table Generator

Electrical and containment

Conduit fill: NEC Chapter 9, Table 1; Cable Conduit Capacity (NEC)
Wiring in environmental air spaces (plenum): NEC 300.22(C); Cable Conduit Capacity (NEC)
Raceway exception for plenum ceilings: NEC 300.22(C)(1); Cable Conduit Capacity (NEC)
Conductor ampacity and derating: NEC 310.15(B); Speaker & Coax Cable Sizing Rack Builder (EIA-310-E)Rack Cooling (ASHRAE)
Class 2 and Class 3 circuits: NEC 725; Speaker & Coax Cable Sizing PoE Budget Cable Conduit Capacity (NEC)
Optical fibre cables and raceways: NEC 770; Cable Conduit Capacity (NEC)
Communications circuits: NEC 800; PoE Budget IP Table Generator Cable Conduit Capacity (NEC)
Coaxial distribution: NEC 820; Speaker & Coax Cable Sizing Cable Conduit Capacity (NEC)
UPS classification and runtime: IEC 62040-3; Rack Builder (EIA-310-E)UPS Sizing

Space, furniture and life safety

Assembly seating, row spacing and egress: IBC 1029; NFPA 101; Reference only
Rack dimensions and rack units: EIA-310-E; Rack Builder (EIA-310-E)Rack Cooling (ASHRAE)UPS Sizing
Chair and work surface dimensions: BS EN 1335; BS EN 527; Reference only
Equipment room cooling: ASHRAE thermal guidelines; DvLED Pixel Pitch PoE Budget Rack Builder (EIA-310-E)Rack Cooling (ASHRAE)UPS Sizing

In every report

The PDF each calculator produces carries a matrix showing which document was applied to which part of that specific design, generated from the result rows actually used — so a reviewing consultant can follow your reasoning rather than take it on trust. Rows derived from a planning assumption rather than a requirement are marked as such, both on screen and in the report.

Several of these documents are paywalled. The formulas implemented here are their well-established public form — the arithmetic practising CTS-D designers use — and every result cites the governing document. Where a design decision turns on an exact threshold, consult the standard itself.