Hempcrete posts? In Saigon the French used concrete and strap iron telephone poles and the Americans used wood. Wonder which are left today.
DDG can't find a picture of one but there exists a 'pinecone plydome'. You'll notice there is an edge up orientation in the 1959 patent drawing. This creates a ridgeline of sorts. Then the [two] five-way vertexes that were pinwheeling can be shingle-lapped instead. Re-lap everything and it's all downhill from there. Widen each piece to minimize the gap and extend the downhill edge to overlap the lapped edges lower down.
The result is a shingled hemisphere with no struts, just 2x the sheeting.