Wednesday, November 24, 2010

Getting Closed In – and right before the snowstorm

November 23, 2010

With the snowstorm that hit Monday afternoon at 3:30 just as the jobsite was shutting down, everyone is thinking about winter – how to get home, for one thing, and, looking ahead, how the new building will perform to keep us warm once we’re living inside. 

Our project’s energy model is designed around what we call a “super-insulated shell.”  The roof, walls and windows will all be high performing, meaning we’re insulating at a much higher level than code demands.  The greater insulation will keep the building from experiencing the large interior temperature swings that plague normally-insulated buildings.  Those buildings, in turn, use more heating or cooling energy to keep the interior temperature constant.  Our building is designed to use much less --  in fact, we’ll use only about 32% of the energy required by a standard new office building in Seattle and the Puget Sound region.   This will make ours the most energy efficient office building in Western Washington.

Once our R-50 roof was on, attention turned to the walls.   Our big concrete shell received its first new winter coat, late last week – a 1” thick layer of spray-on, closed-cell polyeurethane foam on the inside of the 8” thick concrete walls.  This insulation layer will be joined later by traditional fiberglass batts in the wall furring.  Together, they and the 8” thick concrete walls form an R-30 barrier against the elements.

Interior framing is underway and the office plan’s central open space – the forum, we call it – is taking shape.  This is where we’ll hold firm-wide gatherings and invite the community in for after-hours events. 

- Steve Rice, Partner
Rice Fergus Miller

Friday, November 5, 2010

The New Roof


We were able to frame the new clerestory monitor with reclaimed material from the removal of the original roof.  You can see the old roof joists re-used at the top of this photo.


The layers of the new roof are shown here. At left is the layer of insulation. To the right, the coverboard and sheathing. And, to the far right, the roof membrane is being laid.
















There was a rush to have the roof complete before the rains began. Several of Tim Ryan Construction’s roofers worked in the pouring rain to finish the roof. As a side note, our roof surface is white to reduce the urban heat island effect. (Please see the previous post about our sustainability goals and approach.)