Design Of a Fixed-Dome Ferrocement Biodigester Built Partiall y Underground

Abstract

The analysis, structural design and constructive sequence of a fixed-dome biodigester built partially underground and using ferrocement as construction material under normal work conditions is in this paper developed. The biodigester capacity is 24 m3 and it is composed by a semispherical dome (cover), cylindricalwalls (body) and a circular slab(bottom). The biodigester using ferrocement as construction materialis in agreement with the service guaranty requirements settled for the established loads. The materials amount were also estimated and compared with a same capacity masonry biodigester. The ferrocement’sbiodigester construction sequence and its fi nishing construction steps, assuring the biogas facility’s elements were also included.The obtained result of this paper brings a choice for the biodigester’s builders that concerning the material’s cots is four times cheaper compared to the traditional one.