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        MyEngDesk v0.3
      

Engineering Calculator · v0.3

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Support load iso sketch

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Article

CALCULATORS COMPONENTS BETA SUPPORT LOAD ISO BETA ACADEMY BETA

Piping and pressure equipment engineering calculators

WEIGHT & SPAN

Pipe

Material

Medium

Process medium

Insulation

Support Span

Support type ⓘ

Allowable deflection

Section length [m]ⓘ

Results

Pipe linear mass

—

kg/m

Pipe mass (section)

—

kg

Medium linear mass

—

kg/m

Insulation linear mass

—

kg/m

Total linear mass

—

kg/m

Section mass

—

kg

Pipe paint area / linear

—

m²/m

Pipe paint area (section)

—

m²

Inside diameter ID

—

mm

Max span - simply supported

—

m

Max span - continuous supports

—

m

CROSS-SECTION

OD	—	mm	outer diameter
ID	—	mm	inner diameter
s	—	mm	wall thickness

A_flow	—	cm²	flow area
A_metal	—	cm²	metal cross-section
I	—	×10⁻⁸ m⁴	second moment of area

SIDE VIEW

Pressure Drop

Calculation mode

Fluid

Pipe material (roughness ε) preset roughness

Input

Flow rate

m³/h

Pipeline segments

Results

ΔP total
—
kPa

ΔP total
—
bar

ΔP total (head)

—

m WC

Flow Parameters

Fluid type

Calculation mode

Fluid / medium

Flow rate Q

m³/h

Recommended Velocity Ranges

Results

Cross-section

ID — mm

Velocity

Flow velocity

—

m/s

Inside diameter

—

mm

Flow area

—

cm²

Mass flow

—

kg/h

PED 2014/68/EU — Category Classification

ⓘ

Equipment type

Fired / steam generator > 110 °C (Table 5)

Volume V

L

Max allowable pressure PS

bar g

Fluid Classification

Fluid group (PED Annex II)

Fluid state

Design temperature T °C

Max operating temp T_s °C

Fluid auto-sets group & state

PED Classification Result

CE Marking ⓘ

—

Conformity Route ⓘ

—

Notified Body ⓘ

—

Article / Table

—

Scope Check

PS × V or PS × DN

—

bar·L

PED / SEP status

—

PED 2014/68/EU Annex II — Tables 1–9 · Preliminary only

Pipe Wall Thickness

Standard

Pipe

Operating conditions

Design pressure PS bar g

Design temperature °C

Material & factors

Material

Joint / weld factor E

Corrosion allowance CA

mm

Mill tolerance

%

Pipe Wall Thickness Result

t required

—

mm

t minimum (calc)

—

mm

Resulting ID

—

mm

Allowable stress S

—

MPa at T

P max selected wall

—

bar

Schedule / Series comparison

Material

Material

Pipe length L m

Pipe ⓘ

Temperature Conditions

T_inst °C ⓘ

T_max °C ⓘ

T_min °C ⓘ

Thermal Expansion Result

Thermal Movement

ΔL expansion ⓘ

—

mm

ΔL contraction

—

mm

Total range ⓘ

—

mm

Fully Restrained (worst case)

Thermal stress σ ⓘ

—

MPa

Anchor force F ⓘ

—

kN

Backend thermal screening · Preliminary only

⟳

NPSH Calculation

IN DEVELOPMENT

Available NPSHa vs required NPSHr. Cavitation margin assessment. Suction line sizing and recommendations to avoid cavitation.

Planned: Q3 2025

Have requirements or specific standards you need covered?
Send feedback →

◈

Pump Working Point

IN DEVELOPMENT

System curve vs pump Q-H curve. Working point determination, parallel/series pump operation, affinity laws for speed adjustment.

Planned: Q3 2025

Have requirements or specific standards you need covered?
Send feedback →

⚡

Pump Power & Efficiency

IN DEVELOPMENT

Hydraulic power, shaft power, motor sizing. Efficiency curves, specific speed, impeller diameter estimation.

Planned: Q4 2025

Have requirements or specific standards you need covered?
Send feedback →

♨

Heat Loss — Pipe Insulation

IN DEVELOPMENT

Steady-state heat loss through pipe wall and insulation layers. Multi-layer cylinder model. Economic insulation thickness, condensation risk on cold pipes.

Planned: Q3 2025

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💧

Steam Condensate & Trap Sizing

IN DEVELOPMENT

Condensate load from pipe warm-up and steady-state operation. Steam trap sizing and selection guidance.

Planned: Q4 2025

Have requirements or specific standards you need covered?
Send feedback →

◯

Vessel Wall Thickness

IN DEVELOPMENT

Cylindrical shell and end cap thickness per ASME VIII Div.1 and EN 13445. Design pressure, temperature, material, weld joint efficiency.

Planned: Q4 2025

Have requirements or specific standards you need covered?
Send feedback →

▣

Vessel Weight & Volume

IN DEVELOPMENT

Complete vessel mass breakdown — shell, heads, nozzles, internals, contents. Hydrostatic test weight. Centre of gravity.

Planned: Q4 2025

Have requirements or specific standards you need covered?
Send feedback →

≡

Pipeline Volume Inventory

IN DEVELOPMENT

Build a pipeline system section by section. Add pipe lengths, fittings, valves, vessels — each with its bore volume. Total volume for hydrotesting, chemical dosing, filling time.

Planned: Q1 2026

Have requirements or specific standards you need covered?
Send feedback →

Gas Pressure Regulator

Gas type

Upstream (1)

Pressure p₁ bar g

Temperature T₁ °C

Downstream (2)

Set pressure p₂ bar g

Pipe DN downstream

Flow & Valve

Mass flow kg/h

Valve Kv [m³/h · bar⁻⁰·⁵]

Valve pressure recovery factor F_L

Results

Thermodynamic state

T₂ after throttling

—

°C

ΔT Joule-Thomson

—

K

Density ρ₁

—

kg/m³

Density ρ₂

—

kg/m³

Velocities

v₁ upstream

—

m/s

v₂ downstream

—

m/s

Choked flow check (ISA S75 / IEC 60534)

Critical p-ratio r_crit

—

—

Actual p-ratio r_act

—

—

Flow regime

—

Choked Δp limit

—

bar

Valve sizing (IEC 60534)

Kv required

—

m³/h

Cv required

—

USgpm/psi⁰·⁵

Kv utilisation

—

%

Sizing basis

—

Tank / Vessel Sizing

TAG / EQUIPMENT NUMBER (optional)

Equipment type

Calculation mode

Roof type

Diameter D mm

Shell height H mm

Dead stock height mm

Volume units

Results

Enter dimensions to calculate.

Schematic cross-section

Tank Breathing

Standard / basis

Tank volume V m3

Stored liquid

Medium

Liquid class

Operational breathing

Max fill rate m3/h

Max empty rate m3/h

Thermal conditions

Max ambient temp degC

Min ambient temp degC

Tank limits & vent

Max pressure mbar g

Max vacuum mbar

Vent back pressure mbar

Vent type

Results

Thermal breathing(daily temperature cycle)

Inbreathing (vacuum)

—

Nm3/h

Outbreathing (pressure)

—

Nm3/h

Operational breathing (fill / empty)

Inbreathing (emptying)

—

Nm3/h

Outbreathing (filling)

—

Nm3/h

Design total(thermal + operational combined)

Total inbreathing

—

Nm3/h

Total outbreathing

—

Nm3/h

Vent sizing(at tank pressure limit)

Required equivalent effective flow area (inbreathing)

—

cm2

Required equivalent effective flow area (outbreathing)

—

cm2

Indicative nominal connection size (inbreathing)

—

DN

Indicative nominal connection size (outbreathing)

—

DN

Basis

Method

—

Liquid class

—

Vent Cd

—

Pressure / vacuum check

Max pressure limit

—

Max vacuum limit

—

Water Hammer — Joukowsky

Pipe material

Fluid / medium

Fluid

Flow conditions

Flow velocity v m/s

Pipe length L m

Closure time t_c s

Oper. pressure p0 bar gauge

Surge screening limits

Allowable pressure bar abs - 0 = skip check

Results

Wave propagation

Wave speed a

—

m/s

Wave period 2L/a

—

s

Pressure surge

Joukowsky Delta p
—
bar

Max pressure p_max (abs)
—
bar

Closure type

—

Safe closure t_c

—

s

Cavitation check

Min pressure p_min (abs)

—

bar

Cavitation risk

—

Surge screening

Screening result

—

Expansion Loop Sizing

Calculation mode

Loop type

Material

Temperature & pipe run

Install temp T_cold °C

Operating temp T_hot °C

Pipe run length [m]

Allowable stress S_a [MPa]

Expansion Loop Results

Thermal expansion

Total Delta L

—

mm

Delta T

—

°C

Loop dimensions

Loop leg H
—
mm

Loop width W
—
mm

Pipe flexibility K

—

—

Stress ratio

—

%

Overall use

—

%

Two-Phase Flow Regime

Pipe orientation

Operating pressure bar a

Gas phase

Gas flow rate Q_G m³/h (act.)

Gas density ρ_G [kg/m³]

Gas viscosity μ_G [mPa·s]

Liquid phase

Liquid flow rate Q_L m³/h (act.)

Liquid density ρ_L [kg/m³]

Liquid viscosity μ_L [mPa·s]

Surface tension σ [mN/m]

Flow Regime — Baker / Mandhane

FLOW REGIME

—

—

Superficial velocities

v_SG (gas)

—

m/s

v_SL (liquid)

—

m/s

Void fraction α

—

—

Gas quality x

—

—

Slugging risk

Froude Fr

—

—

Slug risk

—

Support Configuration

Support typeT-Support

Beam / arm span L mm

Column / post height H mm

Anchor Plate & Bolts

Bolt grade

Bolt diameter

Plate thickness mm

Base / flange width mm

Steel grade

Safety factor γ

Calculation basis

Default horizontal factor

Diagram — dimensions & load positions ⓘ

Bending moment diagram

Applied Forces

Position a [mm from left/wall]	Fz [kN]	Fx [kN]	Fy [kN]

Results

Max moment M

—

kNm

Required W_el

—

cm³

Max shear V

—

kN

Deflection limit

—

mm

Recommended Profiles

Anchor Plate & Bolts — Results

Bolt shear force

—

kN/bolt

Bolt tension (moment)

—

kN/bolt

Min bolts required

—

pcs

Plate bending check

—

Bolt shear capacity

—

kN/bolt

Bolt tension capacity

—

kN/bolt

Bolt interaction

—

V + T

Base plate size

—

How does this work?