Friday, July 17, 2009

Second Section of Parking Deck

Crews began work on the second part of the parking garage this week.

Much like in the first section of the garage, the area was first excavated and footings were poured for the concrete columns. Reinforcing dowels project out of the footings. They are the structural stand of the columns that will support the parking deck.

The second section of the parking deck will terminate at the vertical face of the retaining wall. From that end to the street, there will be a concrete apron out to the sidewalk. The parking garage will stretch along the south side of the building, by abutter H&H Builders, to the southwest side at Dorchester Ave.

Visitors will enter from Dorchester Ave and drive up a slight ramp onto the top level of the parking deck. The entryway ramp will be centered to the parking deck. The ramp itself will be 32 feet wide, to accommodate traffic in either direction coming in and out of the garage, by approximately 25 feet long.

The upper parking deck will have 46 parking spaces, there will be 43 spaces in the lower deck. There will be an additional 6 spaces separate from the parking garage at the North end of the building.

The majority of the parking deck, including the entire upper parking deck will be a concrete surface. One section, however, from the base of the ramp at the south side of the parking deck down to the lower level and the first section of the parking decking will be bituminous asphalt. In the lower level of parking deck along the abutter’s side, two vent windows were put in place to create cross ventilation. Asphalt will smoke and burn during a fire, so fire code requires proper ventilation in areas asphalt will be used. Due to the concrete retaining wall along the north section, the lower level in this area of the garage will be concrete, which will crack under heat but will no smoke/burn as asphalt does.

The following blue print highlights the area of the ramp and lower level of the garage that will be covered in asphalt instead of concrete. The pink highlights indicate the vent windows along the abutter’s side of the garage. The rendering below the prints shows that the Expressway side of the lower parking deck will be open, allowing air to move freely into the space.

With the columns in place, the peri system is currently being installed. The reinforcing rod will be installed by the ironworkers late next week. In approximately two weeks the second section of the parking deck will be poured.

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