Hello,
I'm planning to change a 900mm external door to a 1,200mm window. I was planning to remove the old lintel and padstones and fit a new cavity lintel and padstones. For a 1200mm opening in a cavity wall (brick/block) how do I calculate the UDL. I've seen years back that the load is a triangle section about the span, but what angle is this 45Degress etc. Then do I simply work out the weight of the brick & block, render and multiply by 9.81 to get the UDL? Is there a site with a calculator for this?
Thanks
David
I'm planning to change a 900mm external door to a 1,200mm window. I was planning to remove the old lintel and padstones and fit a new cavity lintel and padstones. For a 1200mm opening in a cavity wall (brick/block) how do I calculate the UDL. I've seen years back that the load is a triangle section about the span, but what angle is this 45Degress etc. Then do I simply work out the weight of the brick & block, render and multiply by 9.81 to get the UDL? Is there a site with a calculator for this?
Thanks
David