On a crisp winter morning a small army of concrete trucks arrived at 60 Bragg Hill to participate in the fascinating ritual of bestowing everlasting strength to our developing home. Like a ballet, the confident choreography of man and machine was a joy to watch. Many weeks of measured, deliberate work in harsh winter conditions went into the preparation for today’s pour. Four concrete trucks, one 32 meter concrete pump and a small team of professionals made it look easy. It was all over in three hours.
This is the third of four such pours for 60 Bragg Hill. 40 cubic yards of number six slump concrete was pumped inside the rebar-infused insulated foam forms. Careful agitation of the fresh concrete inside the ICF cavity was performed to assure that the concrete settled correctly within the cavity without any voids. This sandwich of foam and concrete will represent the entire wall structure of our home.
The foam forms are temporarily buttressed with special frames and wood frames to keep the walls straight and window openings true during the curing process. Concrete takes 28 days to set and cure. Due to the inherent strength of the ICF forms many of the frames can be removed within a few days after the pour.
Next steps: fabricating the forms for the three tall gables and attaching the structural insulated panels that define the roof.