Explore the intricacies of plumbing drawings, how they resemble mechanical and electrical drawings, and the crucial elements present such as general notes, fixture schedules, and legends. Understand how these aspects guide the construction process, from sink connections to venting, and the specific details of line work and symbol interpretations.
Key Insights
- Plumbing drawings contain elements such as general notes, standard symbols, fixture schedules, mandatory notes, and legends which guide adherence during construction.
- These drawings include detailed representations of connections and venting, with line work indicated by changes such as dashes representing venting to the roof.
- A legend is included to interpret symbols and line types, detailing specific elements like gas lines, storm drains, and condensate drains through lettering within the line itself.
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Our plumbing drawings are very similar to our mechanical and electrical drawings in that we begin with a cover sheet. So you can see that we have some general notes, a standard symbol, fixture schedule, mandatory notes which need to be definitely adhered to during construction, and also the symbol and abbreviations legend. So let's just look at this condensate detail.
Again, you're simply seeing that up in this area is where you would perchance have a sink. So they're talking about the sink, the connections that are happening from the sink. We have the trap, and then it's going to be venting up to the roof.
So you can see how the line work becomes dashed. So it's venting to roof, one and a half inch diameter pipe venting to roof, and then we're showing it going down into the rest of the building. Over on our fixture schedule, we have the item number.
Item one would be the water closet. If I zoom in a little bit more, you can see that we're talking about the rough-in connections, the size of the piping that's required for a waste line, for the venting, and for cold water lines that are feeding into the toilet itself. And then you can see that we have a description of that particular toilet.
So the same kind of thing is going on. The bathtub, BT1, is requiring a rough-in drain of an inch and a half, inch and a half trap. The vent is an inch and a half.
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And again, whenever you, for example, have a tub and you go to empty the tub, there has to be a vent going up behind the wall that lets air help the system remove the water. You can see we're showing half-inch diameter cold water coming in and half-inch diameter hot water coming into the tub. We have our legend.
And over on the legend, you see we have different symbols. What's going on here typically is that we have a line and then the line has letters within it detailing what's happening here. So for a gas line, the line that will be presented has a G in it.
For my storm drain, an SD. For a condensate drain, a D. So again, plumbing line types normally have lettering going on within them that explains what's happening. So that is our cover sheet.
