My Audi has been in the shop all week. I brought it in on Monday because my adaptive cruise control was not engaging properly (the only problem I have had with the car in three years). While performing diagnostics, they determined that one of 36 battery modules was not performing properly and needed to be replaced. Fortunately, the replacement will be covered under warranty but the repair involved removing the entire battery assembly (pictured above) from the bottom of the car. I have been advised that the work will not be completed until early next week.

I spent half of the day on-site and among other things, helped to unload an entire 53-foot long trailer full of ICF blocks that will be used as forms for the basement walls. Insulated concrete forms (ICF) are lego-like blocks made of styrofoam-like insulating panels that are held together by internal webbing designed as cradles for rebar and anchor points for fasteners. Once stacked to the desired height, concrete is poured into the forms and the resulting wall assembly has an R-value of 25. Jeanine joined me on a visit to the site this evening and we wound up visiting with our neighbors who invited us over for snacks and drinks.

When building an extremely well insulated and tightly sealed home it is imperative that a ventilation system be included in the design. Such a system runs continuously bringing in filtered fresh air from outdoors while exhausting an equal amount of stale air from the house. Rather than waste the energy in the conditioned air that is being sent out of the home, an ERV (Energy Recovery Ventilator) extracts this energy and transfers it to the fresh air entering the house. We have selected the Zehnder 600 Q to serve this purpose in our new home and it is able to recover up to 95% of that energy. Because of extended lead times, I placed an order for our system today so that it will be here in time for the HVAC work, currently planned for November.

Maya left work early today feeling very ill and asked if she could come home. She tested negative twice for Covid today but has most of the symptoms and looked very puny when she arrived. Jeanine is the superior caregiver in such situations but she was fully occupied at work and had an evening meeting. I did my best to do the things she would do if she were here. I took Maya’s temperature (>100F) and administered Ibuprofen. I asked her if she wanted anything to drink or eat. She requested fruits and Gatorade, so I went to the market to retrieve those items, as well as a broccoli quiche which I thought she might enjoy. Mostly, I just let her rest and hope that she will feel better in the morning.

In response to a request from the site supervisor managing our River House build, I upgraded the temporary power service available to folks working on site. I installed four duplex outlets, each on a dedicated 20 amp circuit, and a new load panel underneath the carport. This location allowed me to save money by using indoor-rated components, a good solution for a temporary installation. Should workers require 240V circuits for some reason, there is enough spare capacity to accommodate expansion.

While I was having fun on the river yesterday, Jeanine and friends from her book group were enjoying themselves in Bath, Maine. There, they apparently made the acquaintance of a very large lobster. I am sure there is a good story that goes with the photo, but I will need to. wait until she returns this evening to get the scoop. Meanwhile, back in Massachusetts, I got about 70 minutes of playing time in our last preseason scrimmage before match play begins next week. All that can be said of my performance was that I did not get injured. We played a younger team and with only 2 subs on our bench. Let’s just say we got trounced. Even so, we got a good run in and I feel ready for the beginning of the season.

Moving to Conantum has been wonderful on so many levels, not the least of which is the great neighbors that we have. This evening, I enjoyed a dinner cruise on the Sudbury River hosted by our neighbors to the south. Of course, Jeanine was also invited but is spending the weekend in Maine with girlfriends from her book group. The pontoon boat operated by Martha of the South Bridge Boat House picked us up on the shore of our neighbor’s backyard and toured us up and down the river while dinner was served. Martha was a fountain of knowledge about the river and the people who live on its shores. The party included 4 other couples none of which knew each other before but who were all connected to our hosts. It was great getting to know them and learning all we had in common.

Earlier in the day, I met with our surveyor at the River House and watched as he “pinned” the 8 corners of our foundation footing to identify the exact location of the concrete wall that will be erected next. As we only have one chance to pour the walls, I wanted to double-check the dimensions which we did with a steel tape (used by surveyors to eliminate errors that can result from tapes that stretch). All the pins were dead on. Not even 1/16″ of error over a 42-foot span. Next, we checked diagonals to ensure square corners. Once again, dead on. Finally, I had him check the footing elevations which were within +/- 1/4″ of ideal. When the walls are constructed, I believe we will be able to reduce the elevation variation by 2 to 3 times.

A recent innovation in building materials is the Tstud. It is meant to replace traditional lumber for external wall framing applications. Wood is not a very good insulator. It conducts heat through a wall at a much greater rate than the insulation (see thermal photo below). No matter how well you insulate the cavity, the framing will alway create a thermal bridge for heat to move in or out of the house.

A Tstud is made of two pieces of dimensional lumber that are connected by angled dowels. This creates an air gap that can be filled with insulation resulting in much less heat loss through the framing. Pictured at the top of the post is a 2×6 style Tstud (composed of two 2x3s) being used on a project our architect is designing. He invited my builder’s framing crew and me to see the work in progress for a better understanding of how the product will be incorporated. Our house will use a 2×8 Tstud which is made from a 2×4 and 2×3 dowelled together at right angles to form an L-shaped profile.

Weather conditions could not have been more perfect for our first concrete pour. No rain, overcast skies, not too hot. Today the foundation footings were poured, arguably one of the most important steps to get just right. This is when the levelness and squareness of the rest of the structure get determined. We used exactly two trucks of concrete with not a cubic foot to spare. In fact, the second cement truck emptied before we were finished and there was just enough in the pump truck lines to finish the job. I can’t say enough about our ICF (Insulated Concrete Foundation) sub-contractor, BlueGreen Building Concepts. The quality and accuracy of their work have been exceptional.

The foundation footing forms for the River House have been completed and two mixer truck fulls of concrete are scheduled for delivery tomorrow. The rain that was forecast for today never materialized, for which I am very grateful. It also appears that there should be little if any accumulation overnight which will make for excellent working conditions. I am planning to be on-site for the entire pour which should only take a few hours.

Nico spent last week in Texas training with the US National Amputee Soccer team. He is now in Los Angeles where it would appear he is a guest of the Los Angeles Football Club along with other members of his team and the American Amputee Soccer Association. I am looking forward to hearing all about his adventures when he returns later this week.

Work on the foundation footings is progressing nicely with about 70% of the forms in place. We are scheduled for concrete delivery and our first pour on Thursday. Naturally, there is currently a 50% chance of rain on Wednesday which will likely lead to more delay. I have learned to take delays in stride. First, it was the pandemic slowing down everything from the closing date on our purchase to the permitting approval for the project. Next, it was the lack of truck drivers to deliver enough dumpsters to clear the site of demolition debris. Throughout, we have been faced with supply chain delays and now the weather is conspiring to slow things down as well. I am learning to not worry about things that I cannot control and in this case to be happy for all the thirsty vegetation that has been suffering from the drought we are in.

Concrete is extremely strong in compression but very weak in tension. To compensate for this, rebar (typically carbon steel, hot-rolled round bars with deformation patterns embossed into its surface) is strategically placed within the concrete to provide strength in tension. In some areas, the full length of the rebar is used, in others, it is cut down and shaped for special purposes. The “L” shaped pieces below will connect the foundation footers to the foundation walls when work resumes tomorrow.

I was back on the soccer pitch this morning in a three way scrimmage with two teams from Lexington. My fall season begins in two weeks and to say that I have some work to do to get in shape would be an understatement. Even so, I manage two rather nice goals and managed to walk away without any injuries. With each passing season, I become less interested in winning and more satisfied with surviving.

Jeanine and I spent the better part of the day with my cousin Heather and her husband Burton who are visiting us from North Carolina. We enjoyed a +3 mile hike along the Battle Road trail in Minute Man National Historical Park before lunching on fare from the Concord Cheese Shop. Although she was not here to show it herself, we toured Maya’s tiny house before visiting with Kyle at his new home in Medford. Jeanine will be joining Heather and her sister-in-law at a yoga retreat in Mexico early next year and we are also looking forward to a North Carolina roadtrip at some point to visit with them, my cousin Vincent and sister Mayela.