Yurt Notes & Calculator *
The peak h is 140-180cm, and even 200cm, smaller yurts (e.g. 3-4m) are decrease, e.g. 6m usually is 1.60 or extra.
The peak is so low as a result of the ensuing room is best to warmth, however for motive of consolation it’s possible you’ll select
to have it your head top excessive.
Conventional yurt growth comes from a given w khana-spacing and size of a khana-section, and
then the quantity of poles is calculated, e.g. 2-3 khana sections, or 4-6 khana sections for
massive yurt, then the poles are counted. I’ve prefered to outline the yurt from the quantity of poles for causes of angle
measurement and symmetry (e.g. a number of of 4 poles), to extend or lower npoles
so as to make and see how massive the spacing of w will get.
The ensuing w needs to be between 20-35cm so as to create a secure
wall / khana, good secure laths could enable bigger spacings of w.
Often the roof poles lie on every lath junctions, which is organized as crossed lattice.
Trendy yurts disregard this strategy and lie the roof poles on the rope which holds
the wall / khana collectively, this manner one could be very versatile to construct with given components
(e.g. wall / khana, crown-wheel / toono and many others) a number of sized yurts, however you
sacrifice a few of the stability of the lattice wall.
Historically and likewise for stability the wall lattice is unfold so the crossing laths
relate in 90° (αkhana) angle, however you will have a shorter angle like 60-80° and
have with shorter laths a better wall.
The diameter of the crown-wheel / toono is historically 20% of the yurt diameter, however that is only a reference nothing extra.
Yurt Geometry Sketch (Human is 170cm/5’7″) |
Edit the numbers within the yellow fields, after which press “calculate” button.
d = cm,
h = cm,
npoles = ,
dwheel = cm
top outlined by htot = cm, or through
αroof = °, (0..50°)
Trace: The bigger the d diameter, the extra poles you want, attempt a a number of of 4 for the roof swimming pools (npoles). The ensuing w needs to be between 20-35cm as talked about to get a secure khana (e.g. diameter cm / 10 = poles provides w = 31cm).
Additionally, wwheel should not be too small so as to assemble the roof poles on the roof/crown wheel, enhance the roof/crown wheel diameter dwheel if essential. Additionally, αkhana you may alter, and enhance h by a given lkhana (e.g. 2m lkhana with 90° provides h ~ 142cm, however with 83° you attain h ~ 150cm).
| Common: | |
| complete circumference c = m, | |
| flooring space Aflooring = m2 | |
| complete quantity Vcomplete = m3 | |
| Wall / Khana: | |
| spacing of roof poles & khana w = cm, | |
| size of khana lath lkhana = cm, | |
| spacing between holes wkhana-holes = cm, | |
| complete holes (further cm left), | with αkhana = ° angle (should you change it, once more) |
| complete of apprx. nlaths = khana laths required, | |
| provides nkhana-sections = khana-sections, | when lkhana part = m (should you change it, once more). |
| Roof Poles / Uni: | |
| Roof pole size lpole = cm, (add further size for getting into the crown-wheel / toono 3-4cm and the opposite finish with twine 2-3cm, complete e.g. 6cm) |
|
| angle between every pole αpoles = °, | |
| area between poles on the roof/crown wheel wwheel = cm |
The canvas has two major items: the roof, and the wall.
Roof Canvas, Lanewise |
Roof Canvas
With a view to calculate the angle αcutoff I merely calculate each circumferences, based mostly on droof and d, after which substract the later from the primary, that is the size which is left and must be lower away:
αcutoff = (droof * π – d * π) * 360 / (droof * π)
wcutoff = sin(αcutoff/2) * lroof * 2
Due to this fact
Aroof = m2 e.g. sq. canvas of m, apprx.m2 left over.
Lanewise
Use a number of lanes (frequent method to get canvas) as indicated to compose the form:
nroof lanes = droof / wlane (and spherical up)
ltot lanes = droof * nroof lanes
You’ll be able to calculate extra precise (approximate the circle with out tilt cutoff αcutoff):
wlane cm,
wroofextra cm,
whereas final lane has
m left over.
Complete size as one lane: m
Usually canvas comes 1m – 2m (e.g. 1.60m) width, however could be tons of of meter lengthy. I like to recommend for the peak of the yurt h to not go over the frequent 1.60m, e.g. I select 1.50m so I’ve 2 occasions 5cm left high and backside for the seam.
Observe: It’s good to add further size as you need to sew the roof canvas (enter 5-10cm lower than the precise lane width for wlane), and likewise fold its seam two or 4 occasions, moreover, purchased canvas normally shrinks 5-7%, so purchase preshrinked canvas or shrink it (means wash it) earlier than you narrow.
Stitching: Both mark the center line of every lower canvas lane (within the illustration the crimson line), after which align the lanes alongside this center line or calculate the offset of every subsequent layer to the earlier; perhaps additionally use needles to connect the following lane to stitch, keep away from wrinkles, with some observe with a sewing-machine you would possibly do it with out needles.
When working from high to backside, subsequent lane over earlier lane, till you attain the middle, then subsequent lane below earlier lane. For the rain cowl you would possibly use one huge piece of canvas, as an alternative to put lanes to one another and depart quite a lot of seams the place water can leak by.
 
Canvas Structure |
In the actual world software, you would possibly not lower αcutoff away however simply make a line lower, and let the 2 laps overlap one another, on this case you want an extra layer of canopy, or bind it with a twine.
For the rain insulation I exploit a sq. blanket of artificial and depart it in that form and make no lower in any respect however fold it for the lean and tie it with 4 or 6 cords to the underside of the yurt.
The cotton inside roof canvas I compose with a number of canvas lanes, and for a roof angle αroof of 25° I let the canvas depart with out lower or folding the spare, the canvas did dangle a bit between every roof pole. For bigger roof angles it’s possible you’ll take into account to truncate the canvas to suit it extra carefully.
Roof Canvas, Lanewise Conventional |
Conventional Lanewise
Conventional roof canvas is sewed lane smart, e.g. you connect numerous lanes till you attain the middle, that a part of the canvas is laid unto the yurt skeleton, and the following lanes are individually matched to that type and step-by-step added. It”s a time consuming process, and the roof canvas suits carefully however turns into extra rigid. As I discussed earlier than,
for 25° roof angle a flat circle fashioned canvas is adequate, the additional canvas (vs cone) is distributed evenly amongst all of the roof and hangs a bit (1-2cm) down between the roof poles.
Roof Canvas, Pieslice-wise |
Pieslice-wise
If the roof is sufficiently small and match the width of the canvas, or the canvas obtainable makes it extra appropriate, you can too make it pieslice-wise and organize the items so it suits the lane properly, with little leftover.
The pieslice-wise strategy can be utilized for interior but additionally outer rain canvas, but in case a 100% leak-free seam is then required, and because the seams run high to backside of the roof and never sidewise that is doable. I exploit the pieslice-wise strategy for the thermal insulation layer.
As you see, for every particular person layer (rain canvas, insulation, and inside) you need to use the calculator. I exploit for
- rain cowl: one piece of canvas of PE (droof x droof); roof: longlivity 12-18 months, wall: longlivity: 24-28 months
- thermal insulation: lanewise bubblewrap; roof: lasts 12 months max if uncovered to UV by the solar
- thermal insulation: piewise, straw crammed blankets
- inside cotton: lanewise
Wall Canvas
Wall Canvas Part with cords to bind |
That is quite easy, it is rectangular, and c (circumference) occasions h of the lattice wall / khana. Along with your numbers, the wall canvas is m or
Awall = m2.
Greatest you select wlane the identical as h, then you need to use one lane for your entire wall canvas; in any other case you require to stitch lot’s of vertical lanes collectively to realize h, together with your
wlane you do for your entire wall canvas.
Chances are you’ll substract the door width (mentioned later in additional element), however I like to recommend you intend with further size, it is simpler to chop than add extra canvas later. I used 10m lengthy sections, hooked up brief cords so as to bind it to the primary rope, you can too bind to the roof-poles.
Complete Canvas
Complete canvas of apprx. m
You may get an approximate value overview, select your individual foreign money (US$, €, CHF and many others).
You continue to want:
- crown wheel aka toono
- door aka khaalga
- a number of layers (e.g. inside, insulation layer)
- flooring
Usually the canvas could the costliest a part of your yurt so it is sensible to actually get a great and priceworthy supply for the cotton, the identical for the raincover.
My 6.4m diameter yurt with 64 poles did value apprx. CHF 1000 or US$ 800 or € 670 (bamboo poles for roof & wall, PE as rain cowl, wholesale cotton 1.5m extensive and many others), see particulars in my yurt diary.