Presets & Thickness Catalog
Select a saved project to load or delete.
Populates per-row thickness dropdowns; manual entry still allowed.
Lengths in ft or m based on selection.
Catalog choices adapt to selected units
Pipe Segments
| # | Label | Length | Pipe Size | Bare OD | Insulation Thickness | Insulated OD | Remove |
|---|
Lengths are linear spans of straight pipe. Add fittings below.
Fittings and Equivalent Length Factors
90° Elbows
in
45° Elbows
in
Tees
in
Valves
in
Flanges
in
Default factors: 90°=12×D; 45°=6×D; tee=16×D; valve=30×D; flange=4×D. Choose a specific segment or custom OD per fitting type if needed.
Results
Straight Pipe Length
0.00
Fittings Equivalent Length
0.00
Waste Added
0.00
Total Insulation Length
0.00
ft
| Segment | Length | Bare OD | Thickness | Insulated OD |
|---|
Tip: Save this setup as a project preset for fast reuse.
Example Data
| Label | Length | Pipe Size | Bare OD | Insulation Thickness | Notes |
|---|---|---|---|---|---|
| Main Supply | 120 ft | NPS 2" | 2.375 in | 1.00 in | Mechanical room to riser |
| Riser | 45 ft | NPS 3" | 3.500 in | 1.50 in | Vertical run, floor 1–3 |
| Branch A | 36 ft | NPS 1" | 1.315 in | 0.75 in | Feeds fan coils |
Formulas Used
- Insulated Outside Diameter (per segment):
Dins = Dod + 2 × twhere Dod is bare outside diameter and t is insulation thickness.
- Fittings Equivalent Length (per type with overrides):
Lfit,i = counti × factori × Dbasis,isummed across all fitting types. Dbasis,i can be the length-weighted average, a specific segment OD/Insulated OD, or a custom OD.
- Straight Length:
Lstraight = Σ ( segment length )
- Total Before Waste:
Lpre = Lstraight + Σ Lfit,i
- Waste:
Lwaste = Lpre × (waste% ÷ 100)
- Total Insulation Length:
Ltotal = Lpre + Lwaste
Factors are rule-of-thumb multipliers in diameters. Adjust using supplier data or in-house standards.
How to Use This Calculator
- Select your unit system and supplier catalog.
- Add one row per straight pipe segment; pick nominal size or enter a custom OD.
- Choose thickness from the catalog dropdown or enter manually.
- For fittings, set counts, factors, and optionally override the size basis per type.
- Set waste allowance and precision. Click Calculate to see totals.
- Export CSV or PDF, or save the setup as a project preset.
FAQs
Selecting a catalog populates a dropdown of common thicknesses per row in the active units. You can still type a custom value if the exact size is not listed.
Overrides let each fitting type use a specific diameter basis: overall average, a selected segment’s OD/insulated OD, or a custom OD value in the current diameter units.
Everything shown: unit system, supplier catalog, segments, thicknesses, fitting counts and factors, per-type size overrides, waste, and precision. Presets are stored locally in your browser.
Yes. Use Export to download a JSON file of all presets, then Import on another device and choose the file. You can also version-control that JSON in your project repository.
No. Catalogs only suggest thickness values. Adjust fitting factors as needed from product guides or site standards, and use per-type overrides for accurate allowances.