Sanitary Fixture Calculator

✏️

Input Data

Enter your project data

Pipe Sizing Method (-)

Selects which method drives the Recommended Pipe boxes (main line, cold line, hot line)

Pipe Material (-)

TS EN 806-3: selects Table 3.x. DIN 1988-300: the smallest pipe of this material with peak-flow velocity ≤ 2 m/s is proposed

Building Type (-)

Sets the DIN 1988-300 peak-flow curve and the typical drainage K (TS EN 12056-2). TS EN 806-3 has no building types - in that mode it only affects drainage and the DIN comparison. For non-residential use, choose DIN 1988-300 as sizing method

Drainage System (TS EN 12056-2) (-)

System I: partly filled branches, 50 % filling (usual practice in Turkey / continental Europe). System II: small-bore branches, 70 % filling

Frequency Factor K (TS EN 12056-2) (-)

Auto = from the building type (dwelling / office 0.5, school / hotel / hospital 0.7, camp 1.0). Override only for special use: public toilets / showers 1.0, laboratory 1.2

Shower Simultaneity (engineering check) (-)

Optional, outside both standards: share of showers running at the same time (e.g. shift change in camps / dormitories). Shown as a separate check next to the standard results

Drain Slope (%) (-)

Gradient of the horizontal drain (TS EN 12056-2 Annex B range 0.5–5 %)

Washbasin Count (pcs)

Toilet Count (pcs)

Shower Count (pcs)

Kitchen Sink Count (pcs)

Dishwasher Count (pcs)

Washing Machine Count (pcs)

Bathtub Count (pcs)

Installed Main Line Pipe (check) (-)

Site check: pipe already installed on the main line before the water heater (list follows the selected material)

Installed Cold Line Pipe (check) (-)

Site check: pipe already installed on the cold water line

Installed Hot Line Pipe (check) (-)

Site check: pipe already installed on the hot water line

Installed Drain (check) (-)

Site check: drain pipe already installed (checked at the selected slope; the minimum slope that would make it work is also shown)

📊

Calculation Results

Calculated instantly from your inputs

Sanitary

Sanitary Fixture Load Calculation

Calculate water supply and drainage loads according to TS EN 806-3 and TS EN 12056-2

Key Points:

TS EN 806-3 for water supply
TS EN 12056-2 for drainage
Loading units (LU) with material tables 3.1-3.8 - simultaneity built into the tables
Automatic pipe sizing
Large facility support (up to 2000 fixtures)
Largest single draw-off and max pipe length limits of the tables are checked
Above the table range = special installation (TS EN 806-3 §6)

Calculation Steps:

Enter all required parameters
Click "Update Calculation"
Review results and analysis

Formula Variables:

LU Loading Unit (LU)

DU Discharge Unit (DU)

Qww Wastewater Flow (L/s)