The two piece design consisting of a circular lattice wall (kana), commonly some 4 to 5 feet high, to surround an area some16 feet across, with a sloping radial roof.

The kana's length will be the circumference of a circle who's width is know. The kana is usually made of section for convenience or handling and storage.

The parameters in constructing a kana are dependent upon the spacing which in turn is dependent upon the strength of individual slats.

The formulae below shoes the relativity of the horizontal length of the kana, which is a multiple of B relative to the distance between the cross-over distance in each strut (A)

If (A = 30cm)

B^{^2} = A^{^2} + A^{^2} = (a x a + a x a) = a(a + a) = a x 2a = 2a²

B = √ ( 2a²) = √2 x √a² = √2 x a = 1.414a

Then (B = 30 *2^{^ 0.5} = 30 x 1.414 = 42.42cm

A yurt with a 4 metre diameter (approx 13.5ft.) will need a kana of 4 x Pi = 4 x 3.14159 = 12.6 Metres. (circumference)

42.42 x 30 = 12.726 :: close to 12.6 Metres needs 2 x 30 or 60 poles at some length.

Height = 1^{^ 0.5} x (length of battens) i.e. .707 x (length of battens)
Tableof Tie Distances and Batten length to give approximate height and diameter of erected kana.