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How would you temp support this? I can remove the old doors, do the concrete work, build the end walls (with reinforcement to the top plate), remove center support, but that would still leave the top plate (double 2x4s) unsupported for ~12' until I get new header in. Am I worrying too much?

Thanks, Guys. It's rafter construction, 16" OC with 2 x 10 rafter ties 48" OC. My research seems to indicate that 2 x 1.75 x 11.25 LVLs fastened together will be more than enough for a 12' door. The garage was built in early 60's and has a separate 2x 10 header (single ply) for each 9' wide...

No one?

I have a 24 x 24 x 8' walls detached garage that I plan to modify to raise ceiling height (see thread https://www.garagejournal.com/forum/threads/raising-garage-ceiling-questions.500414/) so I can utilize a car lift in center of garage. Since entry is at gable end and ceiling height will be...

It's not quite in the corner, 4 feet back from front corner of garage. But your comment did get me thinking about the the situation next to the exterior wall. The 2 x 4 wall sits on a concrete block foundation and the block extends beyond the 2 x 4 bottom plate by around 3 inches. I had...

I've had one for almost 10 years and love it. To use an over-used phrase, it is a game changer, but then any lift that works will be. Only in the last year has it developed a small leak on one of the cylinders.

This is what I was looking for. If I understand it correctly, I think it's telling me I can't use the existing 3.5" bearing (the 2 x 4 wall top plate) as-is because it doesn't meet the 'de' spec of 0.6 x beam height. By adding the 5.25 column, I do get to that minimum de, 8.5 (see post #141)...

I didn't think the beam tables were accounting for any beveled corner at the support ends. I realize the ends have little or no bending moment, but I would think if the end is beveled, such as in my example, the shear load is being resisted by a lot less than full beam depth. With the 6/12...

Here's close up of the beam where end sits on top plate. I suspect I'll need more bearing area than what the 5.25" column shown gives. I found this chart, but it applies to BCI joists. Does anyone know of something similar for LVLs?

It's to get more height for the lift. I have to put it in the middle.

Thanks, Bill. I do plan to have lumber yard double check, but I want to understand these calculations. I cracked open the old statics book and find that for a simply supported beam with point load at center, Max Moment = PL/4 and Max Deflection is P(L cubed)/48EI. Using the Versalam number...

I'm getting closer to actually tackling this project, but am thinking of making one change. I'd like to do away with the two lally columns and re-size the beam for the full span of garage. The 20' span ridge beam has been sized for the appropriate snow load and dead load and I end up with...

Thanks, guys.

Could be garage-related... I want to retrofit some base kitchen cabinets with fixed shelves to drawer slide shelves. The depth is non-standard, so I'll be making my own drawers. There's a bewildering array of slides available and I'm leaning toward heavier capacity (in case kids climb on...

Excellent point Wild Bill, bobbin size. The Singer 111W uses the tiny domestic bobbin and is a major drawback to the old machines if you are doing long seams in visible areas. I found this to be more of a pain in the neck than not having reverse...

I have a 1955 vintage Singer 111W155, which, although it does not have reverse, is a very capable walking foot machine. From what I've read, it was widely copied for many years. Parts are easily available and are interchangeable with some of the copys. The walking feet can be changed out for...

I've never had any problem on a non-rusted unibody car lifting at the pinch weld on rocker panel. It is the jacking point on many cars. This is using a hydraulic jack or on the 2 post lift. If the car has structural rust in the rockers, all bets are off...

Thanks, guys. By 'airsealing', I think you mean foaming around all ceiling penetrations. Anything else?

I'm thinking maybe to get up there with a shop vac and HEPA filter and vacuum out as much of it as possible, then remove all of the paper that's left and start fresh with R-19 faced batts. I would then add unfaced R30 bats perpendicular to the joists. Another room that was added on back in the...

Is it underground pipe bringing heat to the garage? If so, what kind of pipe, size, etc.?