Installation of the basement concrete floor using a concrete boom truck.

On a Monday in early June, while the heat index was slated to reach 114 degrees, the concrete basement in the Green & Main building at 800 19^th Street was poured by Rick Hogan Construction. The construction team brought in the concrete boom truck and positioned it to allow best access to the basement.

Extra challenges encountered were not due solely to the heat, but to pouring a basement inside an already existing building – which created a couple of logistic challenges – but nothing that long pipes and hoses could not address.

Looking down into the basement opening from atop the basement wall of the addition.

The layers of the basement floor are very specific. First, there is earth. Next comes 6 inches of 1 inch river rock followed by 2 inches of styrofoam. On top of the styrofoam is a layer of polystyrene which is followed by another inch of styrofoam. The icing on the basement cake is 5 inches of concrete. This concrete mixture is composed of crushed glass, fly ash and slag – all recycled products. Finally, there is a bentonite strip that is placed around the internal edges where the floor meets the wall to help with waterproofing.

One additional component to the concrete mixture is microfiber. Microfiber helps to reduce shrinkage cracks, and in the heat of an Iowa summer, helps to slow the process of drying when the high noon sun is beating down on the freshly laid concrete.

Rick Hogan, owner of Rick Hogan Construction.

An interesting side note is that Rick Hogan, who owns the company, worked for a Pepsi distributor when he was 18, having grown up on the west side of Des Moines. He made multiple deliveries to this building when it was H&H Grocery, getting to know the owner a little bit. As time and choice would have it, Rick returned to this site, contributing to its ongoing historical narrative through his construction contributions.

For additional photos of the basement concrete flooring process, please see our photo gallery.

– Jean Danielson is director of operations for Indigo Dawn. She believes in a free lunch and the tooth fairy.

Sustainable brick patio in a suburban backyard.

The other day I was helping the teenage son of a friend pick weeds out of the backyard brick patio. I took that moment to tell Owen about stormwater management and how, even though we live in a built environment, we are not separate from the world around us. We are responsible for managing and engineering ways that are compatible at the very least – and assistive at the very best – in creating a sustainable way to exist and thrive in tandem with one another.

After talking about this briefly, and hearing pauses and seeing head tilts, I put it in language I knew he would understand. “It is about urban engineering,” I said, as I knew he created worlds in his computer games and understood causality well. “Instead of having a slab of concrete that moves the water to places around the base of the house that could impact the structure, the cracks between the bricks help the water soak into the ground where it lands, instead of moving it en masse to places where it could do damage.”

He nodded and we returned to our weed picking.

A Chiminea fireplace with potted flowers.

For many days I have been thinking about sustainability and memory, historical preservation and remembrance. The built environment provides us with a different type of memory. It is a perpetual ‘memorial’ to what went before us. As memorials too often reference something or someone that no longer exists, I was struggling to figure out ways to re-imagine how individual and collective memories are made solid around us and how to talk about this. In doing so, I was immediately reminded of the Main Streets Conference in Des Moines last week, put on by the National Trust for Historical Preservation in Washington D.C.

An untold number of volunteers have gotten together through the Main Streets program to create dynamic and sustainable forms of community living that repurpose buildings so they may be used in current, economically viable ways that provide a solid footing for not just a few years down the line, but 20 years, 50 years and beyond.

These volunteers and managers understand that their present will be the past of those who are yet in pre-school or junior high. Once these young ones reach adulthood and have families and work in their home communities, it will be a present that they, too, seek to enrich by shared community histories and experiences.

Buildings are part of the language of memory. The structures of our main-street, urban and rural communities are tangible narratives of the best ideas and worst ideas of who we are. The Green & Main Pilot Project seeks to take the best of a particular piece of history in the Sherman Hill neighborhood and re-envision it. We are doing this through extensive dialog with preservationists and just as extensive dialog with sustainability experts at the intersection of building science and green technology.

As my mother said to me the last time she hugged me before we parted, “I am creating memories.” This is what the Green & Main team is doing as well – though we are still in the throes of creation.

– Jean Danielson is director of operations for Indigo Dawn. She believes that lemonade is best served with sunshine.

Chaden Halfhill speaking with Tim Reinders, Design Consultant with Main Street Iowa.

The National Main Streets Conference

The National Main Streets Conference opened earlier this week in Des Moines. Events ranged from tours to evening outings while the central meet-up point was the Polk County Convention Center where 1,300 people convened over a four-day period.

Sunday offered a free session on the Main Street Four Point Approach, created through the National Trust for Historic Preservation in Washington D.C. The Four Point Approach is characterized by Design, Organization, Promotion and Economic Restructuring. It is a very specific template to follow in order to be considered a Main Street Community through the National Trust’s program.

A pilot project began in 1977 through the Chicago office. Three communities throughout the Midwest were chosen and the Trust pledged to work with them for three years to assist with strategies that identified assets and impediments to ultimately leverage the good stuff for downtown economic revitalization. A book grew out of this experience and currently 40 U.S. states have active Main Street programs and communities, the direct outcome of which is new business, physical improvements and community vitality.

Banners representing Iowa’s 45 Main Street communities as displayed at the National Main Streets Conference.

What is a Main Street Community?

So what is a Main Street Community? As over a hundred of us sat in a large conference room, we learned it is a shared vision with a tremendous amount of work. The outcomes, however, are incredible and far reaching. There are 45 active Main Street Communities in Iowa, including Woodbine, Spencer, West Union, Marshalltown, Ames, West Branch, Central City, Burlington, Osceola, Iowa Falls, West Des Moines and the 6th Street Corridor in Des Moines.

In 1985 the Iowa Legislature adopted the program and placed it within the purview of the Iowa Department of Economic Development in order to

…improve the social and economic well-being of Iowa’s communities by assisting selected communities to capitalize on the unique identity, assets and character of their historic commercial district. Main Street is economic development within the context of historic preservation.

The National Main Street Community Criteria that is followed are ten-fold:

1. Have broad-based public and private support

2. Vision and mission statements

3. Comprehensive work plan

4. Historic preservation ethic

5. Active board and committees

6. Adequate operating budget

7. Paid, professional program director

8. On-going training for staff and volunteers

9. Reporting of key statistics

10. Current member of National Main Street Network

Economic & Cultural Development presentation.

Volunteers & Community

The formula is comprehensive and community-driven. It seeks to flesh out and leverage traditions and expertise of a town or region meeting needs for economic stability, growth and solid expectations about a vital future.

There are an untold number of volunteers around the state who see that their future will one day be somebody’s present. These are motivated people who want their extensive efforts for the cultural and economic revitalization of their communities to be a solid footing on which many others can learn, grow, contribute and thrive.

– Jean Danielson is director of operations for Indigo Dawn. She likes sidewalks and walking down them while window shopping. And then buying things.