Still standing still in reality, waiting for gravel and haven't exactly decided on the exact width yet but I think it will be 220 beams and about 500cc on them.
56x270 has a greater moment of inertia (I) than 90x225, but when it comes to section modulus (W), it is the opposite. This means that 56x270 will experience less deflection under the same load, but 90x225 will be able to carry more load before failure.
56x270 has a larger moment of inertia (I) than 90x225, but when it comes to section modulus (W), it's the opposite.
This means that 56x270 will have less deflection under the same load, but 90x225 will be able to carry more load before failure.
Does it have any significant impact on the load-bearing capacity if one uses 34x70 or 45x70 for the battens for the sheet metal if it is 1000cc between the glued laminated beams?
Now that I plan to have a roof slope of 15cm/m and it apparently becomes about 8.5 degrees, I'm wondering if it's correct to miter the roof rafters at 8.5 degrees, will they be "tight against the wall" both at the bottom and top regardless of what length I make them, or do I need to check the angle once I've decided the length?
