Reputation
9,169
Top tag
Next privilege 10,000 Rep.
Access moderator tools
Badges
4 20 36
Newest
 Enlightened
Impact
~909k people reached

  • 0 posts edited
  • 22 helpful flags
  • 207 votes cast
Jan
12
comment How do I calculate deflection in shelving boards?
@isherwood: it really depends a lot on the parameters, which the original post did not specify. I picked worse-case for everything that was unclear: wood species (silver maple), shelf attachment (floating) load distribution (center), thickness (1", to account for final sanding/planing).
Jan
11
answered How do I calculate deflection in shelving boards?
Jan
9
awarded  Famous Question
Jan
5
comment My house has Exterior & Interior insulation. Would it be advisable to remove the internal?
@Bryce: true, if there is a vapor barrier (sounds like probably not based on the question information), the location of the insulation relative to the barrier matters. But that's a whole separate issue. Insulation has the same effect no matter where it's placed in the wall assembly.
Dec
25
comment Which whole house generators put out a good sine wave?
@Johnny: I think it really depends on the particular device. At my office we have plenty of PCs on modified-sine-wave UPSs without incident. Also most laptop chargers are compatible with virtually any power source.
Dec
23
answered Which whole house generators put out a good sine wave?
Dec
21
answered Is a disposer required for dishwasher permanent installation?
Dec
18
answered Is it common for vertical joints to not be filled?
Dec
18
comment Can I put a PV panel on my roof and run wires into a room to a power resistor to generate heat?
Note that not all solar panels are 12V... some of the small ones are but many of the full-size panels are more like 30V. It really depends on how the panel is constructed... how many individual cells and how they're wired together.
Dec
18
answered Can I put a PV panel on my roof and run wires into a room to a power resistor to generate heat?
Dec
18
comment Can I put a PV panel on my roof and run wires into a room to a power resistor to generate heat?
FYI most commercial solar panels sold today should be at least 15% efficient and some of the better ones will be close to 20% even without talking about exotic panels for satellites or something. Also, the maximum power point is not a single number but varies with insolation, so I don't think it's typically listed (except maybe at reference sun conditions?). MPP controllers are sophisticated because they find it.
Dec
16
answered How to fix water damage to wooden table
Dec
15
revised How to find the circuit breaker that is connected with my outdoor outlet
added 39 characters in body
Dec
15
answered How to find the circuit breaker that is connected with my outdoor outlet
Dec
15
answered Refrigerator fail due to adjacent chest freezer
Dec
13
comment Review of my electrical plans
Basements always require emergency egress unless they are only used for mechanical equipment and are less than 200 sf, which it doesn't sound like this is. So it doesn't really matter if it's considered "habitable" or not.
Dec
12
comment Should water heaters be turned off (for safety) when not in use?
@EngrStudent: I still don't see anything how a room-temperature water heater leads to either acidic water or increased rusting. I think turning off a water heater when not in use (e.g. on vacation) is extremely common and not at all a hazard.
Dec
12
comment Carbon Monoxide in garage
I guess I just thought it was weird since I've had the CO detector installed for almost a year and I've never heard a peep out of it or seen anything but "0 ppm" on the display. But maybe it's just the cold weather changing the chemistry of the engine.
Dec
12
comment Carbon Monoxide in garage
It seems silly to say that CO sensors should "never be placed in a garage". Sure the stakes are a lot lower and if the alarm goes off you can just open the door and walk away, but it's not like CO poisoning doesn't count if it happens in a garage. I would sure as hell rather have a false alarm in the garage than no alarm at all.
Dec
12
comment Carbon Monoxide in garage
I guess maybe this really is the answer, but I was surprised that the concentration was registering at all several hours after leaving. The car was probably only running for ~10 seconds before I pulled out of the garage and I was gone for at least 3 hours. And I realize that 55 ppm isn't really that dangerous, but it was enough to trigger the CO alarm.