SAMPLE — CIP Flow & Velocity Calculator (5 ft/s Rule, ASME BPE)

Piping Toolset — Calculation Report

generated by calc-core · 2026-07-21

ProjectSample Project — Demonstration Only	Job No.SAMPLE-001	Client—
CalculationCIP Flow & Velocity Calculator (5 ft/s Rule, ASME BPE)	Calc byPiping Toolset (calc-core)	Checked byUNCHECKED — sample
Date2026-07-21	Rev0	BasisASME BPE SD-6.3.5.2.1 (5 ft/s practice)

1 · Design inputs

2.0 in ID transfer line; find the CIP flow for 5 ft/s, then check a skid that can only deliver 60 gpm.

Tube ID	2.0	in
Target velocity	5	ft/s
Available flow (case 2)	60	gpm

2 · Method

Q (gpm) = 2.448 · v (ft/s) · ID² (in)

v = Q / (2.448 · ID²)

The 2.448 constant is the exact unit conversion for flow through a circular section (Q = v·A). Default target is 5 ft/s per SD-6.3.5.2.1; metric outputs are provided alongside.

3 · Calculation

Required flow: Q = 2.448·5·2² = 2.448·5·4 = 48.96 gpm (185.3 L/min).
Check mode: v = 60 / (2.448·4) = 60 / 9.792 = 6.13 ft/s (1.87 m/s) ≥ 5 → PASS.

4 · Results PASS

Required flow @ 5 ft/s	48.96	gpm
Required flow	185.3	L/min
Achieved velocity @ 60 gpm	6.13	ft/s
Verdict	PASS	—

5 · Verification statement

The result values above are locked as fixture cip-velocity.json, case “2 in line, 5 ft/s target -> required flow”, tolerance 0.01, in the calc-core continuous verification gate (see https://pipingtoolset.com/trust/validation.html). Allowable-stress and factor data are user-supplied inputs; citations: ASME BPE — SD-6.3.5.2.1, CIP line velocity practice.

SAMPLE REPORT — auto-generated from a verification fixture to show the report format. Not a project calculation. ⚠ Engineering-aid tool. Public code equations; allowable-stress and factor data are user-supplied. Results MUST be independently verified and reviewed by a qualified/licensed engineer before any design, fabrication, or operation decision.