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Question:

I had just put in some R-30 insulation in my attic and it's taller than my joists.?

My house was built in 1928 so the ceiling joist are just 2x4sI had taken a lot of the quot;junkquot; we were storing in the attic out but I don't want to lost my storage space up there entirelyCan I lay my plywood back down and just let it compress the insulation where it needs to or will this cause a problem? Will it put too much pressure on my lath from the back side? Any suggestions for avoiding compressing the insulation? Is R-19 thinner and should I just use that where I plan to keep my storage? By the way, the only sections I am storing anything are over the interior walls or near the exterior wallsAnd it's all real light stuffI realize that 2x4's do not make a good floorThanks

Answer:

Just point out the centre of mass as you will see it when viewing from the top (a plan view)You dont have to bother about the vertical axis.
Just point out the centre of mass as you will see it when viewing from the top (a plan view)You dont have to bother about the vertical axis.
Just X and Y-the hook of the crane needs to be in line with the (pallet+crate) CM and the center of the earth, otherwise the pallet will tip and the crate will slide offZ is changing-after all, the crane is lifting the pallet upwards.
Just X and Y-the hook of the crane needs to be in line with the (pallet+crate) CM and the center of the earth, otherwise the pallet will tip and the crate will slide offZ is changing-after all, the crane is lifting the pallet upwards.
The actual 'center of mass' will be somewhere above the pallet (since the cases are stacked up on it) but the 'tipping' axis will be the x and y axis throught the palletYou need to find the x and y coordinates of the CG location as projected 'down' onto the pallet Doug
The actual 'center of mass' will be somewhere above the pallet (since the cases are stacked up on it) but the 'tipping' axis will be the x and y axis throught the palletYou need to find the x and y coordinates of the CG location as projected 'down' onto the pallet Doug
Compressing insulation makes it less effectiveIf you absolutely must have storage up there, strip off layers of the R-30 in the area where you are laying the plywoodOr, make the joists taller in that area by adding 2x6's on top, joining them to the 2x4's with pieces of plywood and screwsReally, it is best to avoid storing very much on top of 2x4 ceiling joists in the first placeIt can make your ceiling sag.
Compressing insulation makes it less effectiveIf you absolutely must have storage up there, strip off layers of the R-30 in the area where you are laying the plywoodOr, make the joists taller in that area by adding 2x6's on top, joining them to the 2x4's with pieces of plywood and screwsReally, it is best to avoid storing very much on top of 2x4 ceiling joists in the first placeIt can make your ceiling sag.

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