Really depends what is above it. Most of the time a double 2 x 12 will work with a 3/8 plywood filler.
For a 20ft span, a typical glulam beam size would be around 5-1/8" x 18-1/2" or 6-3/4" x 15-1/2". The actual size needed may vary depending on the specific load requirements and building codes in your area, so it's recommended to consult with a structural engineer or supplier to determine the appropriate size for your project.
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At least 3 in. drain pipe
3 hours
Idfk <3
Should last 3 years or more. It is like a battery that can discharge all of its power in milliseconds if needed.
They have a life span of 3 to 7 years.
To answer this question the voltage of the system is needed.
3-4 feet long is ideal
3/8"
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