Q$.1($a$)$ Prepare the detailed estimate of road side masonry dust bin given in Figure below $($All dimensions are in cm until specified otherwise$).$

General specifications are:

$($i$)$ Concrete in foundation and under floor: $1$:$2$:$4$ cement concrete $($B$)($ii$)$ Masonry work: All masonry work in $1$st class brick work in $1$:$6$ cement and local sand mortar $($C$),($iii$)$ Flooring: $40mm$ thick $1$:$2$:$4$ cement concrete $($D$),($iv$)$ Plastering cement sand mortar in proportion of $1$:$6$ all around $($inside and outside walls$)($E$)$ and $($v$)$ Finishing: Two coats snowmen painting on outside walls $($F$),($vi$)$ Iron door gauge $18,($G$).$ Adopt suitable rates from 'Schedule of Rates' as given in book $($increase the rate by $400\%)$ or CPWD rates.

$($b$)$ Calculate the duration of each activity, and prepare A$-$O$-$N for one dustbin.

$($c$)$ Prepare LoB if $1000$ dustbins are to be completed within $3$ months. Assume $8$ working hours in a day; $5$ working days in a week and $4$ weeks in a month. Buffer: $2$ days. Take Man hours for different activities as Earthwork A : $10,$ B : $25,$ C : $40,$ D : $20,$ E : $80,$ F: $40,$ and G: $20.$ B$,$ C$...$ are mentioned in part $($a$)$ above.