< [01] fireplace: 12.7 btc
< [02] roof: 33.85 btc
< [03] heater: 50.78 btc [04] insulation: 7.07 btc >
[07] columns: 11.97 btc >
< [05] foundation blocks: 17.25 btc
[06] ramp: 3.39 btc >
< [08] soil prep.: 11.34 btc
fig. 6 columns [6]_risk index: 47%_cost: 11.97 bitcoin columns are an intelligent speculation if the value of life is expected to exceed: 1.19 bitcoin soil prep._risk index: 04%_cost: 11.34 bitcoin soil prep is an intelligent speculation if the value of life is expected to exceed: 1.42 bitcoin
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