What type of pipe is this protruding through my floor?
123356
What's the 1 inch square knob sticking out of the wall?
111079
Can a basement bathroom be vented through a stack servicing sinks on the floor above?
138092
What is $\lfloor i\rfloor$?
103182
How many cables are you allowed to run through a single hole in a wooden floor joist?
128504
Helix on a cylinder
112300
How do I disconnect (and reconnect) the tubing from this fitting?
84561
How would I make these curved indents in this water bottle? Picture in description.
30237
Bending a pipeline back into its origin
68620
Which way is up? (electric outlet)
158429
Is copper piping required within a certain distance from a water heater?
154925
Prevent fluid to flow through the walls of an obstacle
128073
How to seal a pipe pass-through in a basement wall
94671
How do I replace this cast iron toilet flange?
37893
What are these things that look like vaporators?
101122
How to remove the handles from this faucet
80782
New breaker and panel: What's the brown goo where they connect?
91855
How to identify an old compression stem in order to find a replacement