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inshaBY SCHNELL
MechanicalVerified

Duct Sizing

Supply and return duct sizing with pressure loss calculation

Verified module: SI units, SBC-referenced, deterministic, with documented verification metadata.

Code references

ASHRAE

Inputs

ParameterUnit
AirflowL/s
Duct Material—
Duct Lengthm
Number of Fittings-
Main Duct?—
Insulation—

Runs in the Insha by Schnell workspace. Verified calculators return explicit pass / fail / warning results with a clause trail.

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Insha by Schnell is in beta. All calculator outputs require review by a licensed SCE-registered engineer before submission to MOMRA, Civil Defense, MODON, the Royal Commission, or site execution.

Frequently asked questions

What does the Duct Sizing calculator do?
Supply and return duct sizing with pressure loss calculation. It references ASHRAE.
Which Saudi Building Code references does the Duct Sizing calculator use?
The Duct Sizing calculator references ASHRAE.
What inputs does the Duct Sizing calculator need?
The Duct Sizing calculator takes 6 inputs: Airflow (L/s), Duct Material, Duct Length (m), Number of Fittings, Main Duct?, Insulation.
Is the Duct Sizing calculator verified?
Duct Sizing is a verified module: SI units, SBC-referenced, deterministic, with documented verification metadata. Like all Insha by Schnell outputs, its results require review by a licensed SCE-registered engineer before submission or site execution.