Their is formula given in a code i think SP-32
L=N*Pie(D+d)+8d
L=Length of Spiral rings
N=Number of Spirals
Pie=3.142(constant)
D= Diameter of pile cage(spiral C/C)
d=diameter of bar
Consider it as cylinder..
infinity
screw
Threads.
There are actually five kinds of curved lines: convex, concave, S-shaped, scallop, and spiral.
Formula to calculate length of spiral reinforcement in columns
How do calculate spiral length of Spiral rings
Their is formula given in a code i think SP-32 L=N*Pie(D+d)+8d L=Length of Spiral rings N=Number of Spirals Pie=3.142(constant) D= Diameter of pile cage(spiral C/C) d=diameter of bar
It depends on the spiral - there are lots of different ones, with different formulae.
You take it and roll it out and use a length measuring tool to measure it's approximate length in yards feet inches centimeters etc... :)
The length of the spiral ring is given by the formula L=N*Pi(D+d)+8d where L=length, N=number of spirals, D=diameter of pile and d=diameter of the bar.
To calculate for spiral length, the formula is L = pi*N* (D + d) / 2. This is wherein N = (D - d) / (2*t) is the number of wraps of tape of thickness t on a roll of diameter D (when full) around a core of diameter d.
the dia meter of the pile is 750mm the pitch of the sprial rings are 100mm and how to calucualte the lentngth of the rod for the one meter lkength of pile.
You can tell if a spiral spring pitch is normal by this equation; 0.2*D < p < 0.4*D. However, you can calculate a spiral spring pitch by l = πDn, A = πd2 /4.
Spiral
lengthofspiralring
Consider it as cylinder..