Please answer.Question $1$

Engineers have a unique role to play in the Path Forward to a sustainable future. This is because they have a direct effect on the design and development of

products, processes, and systems; as well as on natural systems through material selection, project sitting, and the end$-$of$-$life management of chemicals,

materials, and products.

You are the project development manager for a high$-$tech property development company. Your company prides itself as being an environmentally conscious

company. Your company is the first to build $3$D printed houses in a new residential area on the outskirts of town. Your current $3$D printing machines use

concrete $($cement $($limestone & clay$),$ water, sand and rocks$)$ which has to be mixed on$-$site $($resulting in dust$/$noise etc.$).$ Furthermore, these machines use

hydraulic oil and water when they operate. You also have diesel generators to power these $3$D printing machines. You have trucks coming and going

$($generating dust$)$ to the building site bring the raw materials for the $3$D printing machine. On one corner of the site $($muddy$)$ you have a water tanker supplying

water for the concrete mix. The housing minister is set to visit your site and production to showcase its "greenness".

You are to present the current environmental challenges and to apply the $12$ Green Engineering principles to develop a better solution that articulates the

benefits and impacts of the solution over the lifetime of the property design process using these printers to the minister.