OK, I think I have it. Certainly enough to be able to satisfy my own curiosity and to explain it to others. I feel a slinky may be useful to explain this to those I have to explain it to!
Thanks for the time explaining this as it seemed completely counter intuitive to me, I did ask some of my...
Ok, I see where your going with this.
To confirm I understand; If (imaginary) hoops are at spacing x on a straight as they sweep around the bend the you have >x spacing on the outside and <x spacing on the inside and thus the axial load less per unit (length) outside and greater per unit...
According to the calculations related in 304.2.1 the minimum wall thickness on the extrados of the bend can be thinner than the minimum wall thickness required for a straight of the same length (section 304.1.2) , conversely on the introdos the wall is required to be greater than that of the...
