With construction well underway the former Daley Bicentennial Plaza (next to Millennium Park) is on its way to being one of the “greenest” parks in America. The park is atop the large East Monroe Street Parking Garage, which has been restructured extensively including a new membrade above the garage which will also serve as the foundation that the park will sit on top of.
The new park, offers sweeping views of Lake Michigan, and combined with Millenium park “Peanut Park” will offer 45-50 acres of green roof over a downtown city parking garage.
So what does Insulfoam’s EPS Geofoam have to do with it? With about 60% of earthworks completes, crews have removed 82,000 cubic yards of existing fill (that existed beneath the soil for decades). Some of this is in fact lightweight fill material like Geofoam, and is still in excellent condition and is able to be recycled for reuse to create “hills” in the park. Geofoam will also support the base below new paths for bikers and walkers to get through to the lake paths.
Maggie Daley Park Rendering
The site itself now has the required EPS Geofoam blocks stock piled and ready for installation. In the days to come the installation of the acres of Geofoam will be seen on the bottom right hand side of THIS JOBSITE CAMERA.
Bob O’Neill, president of Grant Park Conservancy, in an article from the Chicago Sun Timescalled the park “more natural and much more informal” than Daley Bicentennial Park. And very kid-friendly, featuring a three-acre play garden, ice rink, climbing walls, a skating rink in the shape of a ribbon .“You’ll be able to walk up hills and see the lake,” O’Neill said. “When this is done . . . it’s going to be a much more green, sort of organic flow. Whereas Millennium Park is more structural and formal, this is more nature-oriented.”
EPS: THE FOUNDATION FOR MOISTURE PROTECTION & INSULATION
Many projects design & build for higher load bearing densities then are required, thus costing significantly more time and money than is necessary. ASTM’s D6817 is the specification for rigid cellular polystyrene geofoam. Designing to this standard not only helps engineers meet technical specifications, but also helps save money and time by using EPS (expanded polystyrene) geofoam, which is listed by the standard, as a structural void fill. Geofoam has the compressive strength to bear heavy loads like concrete slabs, soil overburden, highway trucks and even airplane traffic and has gained widespread acceptance in load-bearing applications with federal and state entities like DoTs, airports and commercial projects.
Similarly referring to ASTM C578 (Specification for Rigid Cellular Polystyrene Thermal Insulation) while selecting your below-grade insulation products, not only helps you design the right product for the job, but also helps avoids unnecessary costs associated with over engineering.
ASTM C578 publishes compressive strength, deformation and dimensional stability values for both EPS & Extruded Polystyrene – XPS. Insulfoam’s wide range of plain and coated-facer insulation products meet ASTM C578 specifications, providing the same compressive strengths and long-term moisture prevention as competing below-grade insulations. But Insulfoam products come at a lower cost to the building owner, helping deliver significant savings in project costs.
FEATURED BELOW GRADE PROJECT: 49er’s Stadium
Project: San Francisco 49er’s New Football Stadium
Location: Santa Clara, CA
Product: Insulfoam GeoFoam 2,500 cubic feet of EPS39 and 25,000 cubic feet of EPS15
Application: Below grade structural void fill to support foundation for the fan seating areas
The contractors (Conoco Company of Concord and Turner & Devcon Construction) chose EPS Geofoam due to it’s extremely low weight and high load-bearing capacity to support the dimensional stability required for concrete topping slabs. Insulfoam’s multiple manufacturing locations in California and nearby states provided just-in-time deliveries direct to the job site, which was a welcome bonus.
More than any other part of a building, its roof system components must complement each other. From the deck to the insulation to the membrane, careful selection and installation of all roofing materials are necessary for a high-performance roof assembly.
Because insulation contributes to a roof system’s thermal performance and overall durability while providing a substrate for the roof membrane….decision of which insulation type to use can profoundly affect your profitability.
Read the full article featured in Professional Roofing magazine’s January issue, Foam Up Top. John Cambruzzi, Insulfoam director of sales and national accounts,explains that expanded polystyrene (EPS) foam insulation is one insulation type that should be considered with the wide range of products available and the ways EPS can help reduce labor and material costs. John takes you through EPS insulation product selection options and installation considerations.
Written by: David Shong, Insulfoam Architectural & Engineering Technical Specialist
CCHRC Expansion, Alaska
The Cold Climate Housing Research Center, CCHRC, in Fairbanks, AK constructed an addition to their facility in the spring of 2012. The project Engineers specified 12″ of InsulFoam GF EPS39 which has a minimum compressive resistance of 2,160 psf @ 1% strain as a sub-base and below slab insulation. EPS39 was placed around the perimeter under the exterior wall footings and within the zones of influence of interior columns that required higher bearing capacity to withstand the axial loads of the walls,roof and snow load.
The rest of the areas that were simply supporting the 6″ floor slab used 12″ of EPS22 (1051 psf @ 1% strain). They were originally considering only 9″ of EPS46 (2,678 psf @ 1% strain) for the entire building footprint, but were happily surprised to hear the idea of using a lower density under the floor slabs where the decreased dead loads justified a lower EPS density.
They ended up being able to install 12″ of EPS under the entire footprint for less than the original budget which provided more insulation while saving on initial costs as well as long term energy expenditures.