With the delay on the inspection by the City of Monte Sereno, we worked with Larson Steel and made some changes to the design, and agreed to move forward on this project with Larson Steel.
Changing Wooden Posts to Steel Columns
in our meeting on Tuesday, February 24, Bill Brown recommended that we use all steel posts to support the steel beams that will support the hollow core concrete panels. Bryan followed up with Shane Lothrop of Innovative Structural Engineering, who agreed with this change.
Essentially, we are replacing six wooden posts with six steel columns. This change will reduce the cost of our wooden structural framing marginally and increase the cost of our structural steel. While we are reducing the material cost of the structural framing, we’re also reducing the labor component as there would have been a separate site visit to install the wooden posts, which has now been eliminated. The site visit to install the structural steel will take a bit longer but not add a separate visit.
From a LEED perspective, changing the wooden posts to steel columns will help with our Durability Plan. Since termites are indiginous to California, and our original Eichler home had termite damage when we purchased it in 1997 (and subsequent traces and fumigation of in 2002), we will reduce the potential risk of termite damage with steel columns.
Final Preparations to Pour the Structural Slab
Bill Brown’s team installed risers to measure the depth of the concrete being poured. They used an electronic level to place the risers in rows every 10 feet and then painted the risers fluorescent orange.
The steel columns will sit on steel plates, which must be anchored in the structural slab. These steel plates, which are provided by Larson Steel, are set in the concrete using wood forms. Bill Brown’s team uses the materials provided by Larson Steel to build the forms.
The City of Monte Sereno approved the drains and overflows from the stairwell and the window well on Wednesday afternoon. Jorge completed the plumbing for the stairwell and set the drains in place. These drains penetrate the waterproofing and drain into the vertical culvert in the south-east corner of the house.