Okay the tree felled at shoulder height shelter,
I removed all branches below shoulder height and kept them to the side, the felled the tree, it doesnt matter which direction it falls as long as its not on you, then using the the removed branches build a simple layered wall with an door way, use what left on the floor, then cut a tunnel down the length of the felled top, use these bows to line the floor as you go, you will also nee to dig the snow as you go to give you extra hieght (not to much though else youll have to warm a lot of air space) tunnel in two thirds of the top leaving the sides thick, then go outside, trim off the top most bows, use half to cover the roof along the tunnel to stop any powder dropping through, take the rest inside for the floor this need to be built up so as you have to kneel down to move around in side, then back outside an pile the snow half way up the side walls all the way round, at the door way dig down to the ground this is where your fire will be, site your entrance out of the wind(if the wind changes direction you can make a wind break out of snow to guard the door), this is a great team shelter we slept 5 in ours and it was very warm, limit movement in and out though if there are a few of you as the draft will drag out the warmth, don't make a fire inside as the lot will burn readily, here is a ropey pic i have drawn
the second pic is of a similar type but made for two people, the first bit is the same except that you cut the bows off at waist height, and the top is felled just above this, the top is removed and used to prop up one end off the ridge pole while the other rest on the stump, the rest of the construction is the same, plenty of floor boughs, pile the snow half way up, this one we put a small plinth in to use a stove on,
the third pic is this shelter after a week,
the third shelter is a low leant too, this type is built under the edge of the tree, it is a more tactical type of shelter and for normal use I would suggest making a steep angled shelter to shed the snow better, its a tree use heavy shelter as to need a lot of them to make the roof,dodgy pic inbound, the boughs from the trees used are used to thatch the sides and roof, the roof needs to be thick, about and arms depth of boughs on the rough and half on the side again a thick floor,
I am guessing that the partially built on is a simple thatched a frame but this was from Gregs pics,
hope that helps a little, I will see if i have any build pics, but we were very busy at those stages so maybe not
Southey,