Weight of Glass Block Window
Is it possible for a glass block window to crush the window sill? I am removing an old wood window from a Victorian house with balloon construction built in 1880. The window dimensions are 34x74. I estimated the glass alone should weigh 250 lbs and the mortar should be 50-100 lbs more. This window is on the second floor and there is a first floor window directly below it in the same stud bays.
Will framing in this configuration be enough to support the window?
However, keep in mind I don't have a horizontal 2x4 on the floor of the second floor since its balloon frame. The rest looks the same.
I was thinking maybe I should switch the window sill 2x4 for a header with 2x4's and plywood standing up running horizontal?
A single vertical 2x4 4' long should buckle at more than 3300#. For a safety factor of four you can load it to 800#.
You can make a 1/10 scale model out of the same wood which should buckle at 34 to 70#.
The slenderness ratio is about 32 for this, so it will probably be stronger than the numbers above. Try the formula in the link below.
But I think if you frame it like your link it will be way strong. If you have any doubts add one or two more cripple studs under the sill.
look into acrylic blocks
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