How they are shown on the plan
| What | Symbol | Source |
|---|---|---|
| Cold water riser | A circle marked В1 | System designations per GOST 21.205 |
| Hot water riser | A circle, Т3 | Same |
| Sewer riser | A circle, К1 | Same |
| Heating riser | A circle, Т1 | Same |
| Gas riser | A circle, Г1 | Gas pipeline designation per GOST 21.609 |
| A circle, Ст | The riser mark on the drawing starts with these letters | |
| A rectangle with one diagonal | GOST 21.201-2011, Table 11 | |
| Chimney | A rectangle with a diagonal, half of it along the diagonal filled in black | GOST 21.201-2011, Table 11 |
| Ceiling beam | An outline in a dash-dot line with two dots | This is how anything above the cutting plane is shown, GOST 21.501-2011, cl. 5.3.4 |
| Column | An outline with hatching | Like a cut structure |
| Radiator | A rectangle with section ribs | Its own symbol |
What to keep in mind
- For a large riser, the designation is inside the circle. For a thin riser, the circle is small, so the designation is placed next to it.
- The riser's fill color is an editor hint: blue for cold water, red for hot water and heating, gray for sewer, yellow for gas. The standard has no colors.
- The symbols for the radiator, water inlet, gas water heater, meter and ventilation outlet have not been checked against the images in the standards.
- Plan objects are not pushed out of walls: a riser or a column can stand in a wall.