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Pipe Hydraulics · 32 calculators

Get the pipe right the first time.

Size pipes, nail friction loss and velocity, and stop water hammer before it splits a main. The 32-tool core that every hydraulic design leans on — built for hydraulic designers and engineers.

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Tenselo — Friction Loss (Hazen-Williams)
Inputs
15.0L/s
DN125 PE100
500m
50m
Calculate loss
Demonstration only — a simplified set of inputs is shown here. The live calculator includes additional fields and options.
Result
✓Friction & head-loss result
Hazen-Williams · PE/PVC/steel
1.66 m
Loss / 100 m
9.12 m
Total head loss
89.4 kPa
Pressure drop
1.27 m/s
Velocity
0.89 bar
= bar
550 m
Equivalent length
Real output from the Tenselo Friction Loss (Hazen-Williams). Confirm the exact selection against the manufacturer's data.

Inside this pack — 32 calculators

Every tool this discipline reaches for, in one place:

Pipe Insulation Heat LossSiphon Priming VacuumFlange FinderHDPE Butt Weld Fusion (Tender)Pipe DN from FrictionPipe PN SelectorPipe Selector (AU)Pipe Size RecommendationPipe Volume Fill TimePipe Weight Support LoadTrench Excavation VolumeFlow & VelocityFriction (Darcy-Weisbach)Friction LossGravity FlowManifold Head LossMinor Losses (K factors)Reynolds NumberVelocity HeadManning Open ChannelOrifice DischargeSlide Gate Flow EstimatorOrifice Tank Drain TimeWeir Flow EstimatorBracket / Support SpacingThermal ExpansionThrust Block Size CalculatorWater HammerWater Meter SizingFire Flow DemandScreen Flow SelectorAnti-Vortex Plate Design

Why it earns its place

Less spreadsheet wrangling, fewer call-backs, sign-off you can defend.

Velocity in the safe band

Keeps flow fast enough to self-clean, slow enough to dodge erosion and surge.

Real head loss, real pressure

Hazen-Williams loss in m, kPa and bar — so pump head and class selection are defensible.

Water hammer caught early

Surge and column-separation tools flag the risk before it cracks a main.

Every result, on your letterhead

One click turns any calculation into a clean, fully customisable PDF report — branded with your company logo, ready to drop into a submission, quote or design pack.

  • Your logo, company name and project details on every page
  • Inputs, results and the method, all documented
  • Professional output you can hand to a client or approver
Friction Loss (Hazen-Williams) — Calculation Report
Pipe Hydraulics · Tenselo
Flow15 L/s
Friction loss1.66 m / 100 m
Total head loss9.12 m (89.4 kPa)
Velocity1.27 m/s
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