English to French Art/Literary Architecture Architecture and Interior design

Pouvez-vous m'aider à tourner ça en bon français? Thank you... *(le site en question est une colline étroite, où l'on construit la maison....)

"Here, the goal was to make best use of the narrow site, with ***retaining walls and a steel frame ***that spans fifteen meters to turn the house into a belvedere*** that flows out onto terraces at the front and sides, while hugging the steep slope behind. Forty-four sliding glass panels, two by three meters in size, disappear into hidden pockets. Deep overhangs shield the double-glazing from direct summer sun, and create a thermal blanket of cool air.