Problem $2.$ USING VOLUME METHOD. Estimate the materials under class D mixture for the firewall shown in the figure. Use $20$ mm thickness of plaster for ALL the wall surfaces and a $12$ mm thick mortar in between CHB layers. Reinforcement are spaced $80$ cm for vertically and every $3$ horizontally. Use $30$ cm long ties.

TABLE $2-1$ QUANTITY OF CEMENT AND SAND FOR MORTAR AND PLASTER MIXTURE PER CUBIC METER

$\backslash$table$[[,,$Cement in Bags,Sand$],[$Class$,$Mixture,$40$ kg$.,50$ kg$.],[$A$,1$:$2,18\mathrm{.}0,14\mathrm{.}5,1\mathrm{.}0],[$B$,1$:$3,12\mathrm{.}0,9\mathrm{.}5,1\mathrm{.}0],[$C$,1$:$4,9\mathrm{.}0,7\mathrm{.}0,1\mathrm{.}0],[$D$,1$:$5,7\mathrm{.}5,6\mathrm{.}0,1\mathrm{.}0]]$

TABLE $3-4$ LENGTH OF STEEL BAR REINFORCEMENT FOR CONCRETE HOLLOW BLOCK WORK

$\backslash$table$[[$Vertical Reinforcement,Horizontal Reinforcement$],[\backslash$table$[[$Spacing$],[$cm$.]],\backslash$table$[[$Length of Bars in Meter$]],$Spacing,Length of Bars in Meter,,$],[40,0\mathrm{.}235,2\mathrm{.}93,2,0\mathrm{.}284,3\mathrm{.}30],[60,0\mathrm{.}171,2\mathrm{.}13,3,0\mathrm{.}172,2\mathrm{.}15],[80,0\mathrm{.}128,1\mathrm{.}60,4,0\mathrm{.}138,1\mathrm{.}72]]$

TABLE $3-Na,$ is GL TIE WeE FOR CHB mENFONCEMENT PER SQUARE METER

$\backslash$table$[[\backslash$table$[[$Vertow$],[$Spacirg$]],\backslash$table$[[$Horisonty$],[$Layer Spacing$]],|$ Klograms per Square Mater$],[25$cm$.$Th$,30$cm$.$Te$,40$ cm To$],[49,2,904.,065,008],[40,3,009,009,003],[40,4,\mathrm{.}004,008,00],[60,2,308,\mathrm{.}044,\mathrm{.}067],[60,3,008,092,\mathrm{.}042],[60,4,000,094,$on$],[80,2,\mathrm{.}027,033,244],[80,3,000,004,9$a$2],[50,4,205,.0,024]]$