CPI Lightning Talk Session

Our chapter has organized a presentation where members will be speaking in a lightning talk session at the upcoming CPI conference in 2015. Each of the six presenters will show 20 slides for 20 seconds each on their topic. Presentation topics are below. Thanks to Christy Fockler for spearheading the effort.

Dave Anderson (Anderson Hallas Architects) – “Update on the Capital Chambers Rehabilitation”
Dave Anderson, AIA, LEED AP, will give an update on the work by Anderson Hallas Architects on the State Capitol House and Senate Chambers. This talk will be an update from last year’s Part 1 presentation. Recent work includes discoveries of the original painted stencils of historic figures, infrared photography technology, chandelier restoration and plaster restoration. The project is scheduled for completion in late 2015.

Kris Hoehn (Hoehn Architects) – “Pueblo City & Memorial Halls Exterior Rehabilitation”
Like the majority of civic architecture in the early 20th century, these interconnected buildings were designed in the Classical Revival Style. City Hall, completed in 1917, boasts brick masonry bearing walls with granite and Turkey Creek sandstone facings, Indiana limestone columns, and carved ornamentation. The original roof was clad with red clay tile and featured numerous skylights. A terra cotta-clad tower symbolizing the building’s civic importance rises from the center of City Hall. The adjoining Memorial Hall, which houses a large theater, was completed in 1919 and features a more modest exterior envelope of face brick and terra cotta trim.

In May 2009, Hoehn Architects was selected to analyze and assess existing conditions, prepare construction documents, and provide construction administration services for the first phase of rehabilitation of these important buildings. An historic structure assessment had been prepared ten years earlier but it required updating. As a result, Hoehn Architects prepared a preservation plan prior to the preparation of construction documents that focused on the scope of work, including the rehabilitation of drainage systems; the replacement of roofing and flashing (the original clay tile was replaced decades ago by a modified bituminous rolled roofing product); the reintroduction of previously-removed ridge skylights; the repair of the cupola; and masonry repointing. Also included was installation of copper flashing and linings for the concealed gutters and removal of coatings previously applied to the terra cotta-clad tower. The project was completed in May 2011. Hoehn Architects is now working on the second phase of the project, the rehabilitation of the remainder of the exterior building envelope, which is scheduled for completion in August of 2014, and is serving as a consultant for the interior rehabilitation of the first floor of City Hall.

Donald Harvey (Atkinson-Noland & Associates) – “The 16th Street Pedestrian Mall Pilot Repair Program”
The 16th Street Pedestrian and Transit Mall forms the vital spine of Downtown Denver. This approximately one-mile-long corridor was designed by Henry Cobb of the noted design firm Pei Cobb Freed Partners. The pink, gray, and white granite pavers are patterned after the diamonds found on the back of the local western rattlesnake.

The mall opened in 1982 and has served as the cultural and economic hub of downtown Denver ever since. Although the mall is only about 30 years old, it faces deterioration and wear typically associated with much older roads. A combination of heavy hybrid bus wheel loads, harsh freeze-thaw conditions, and poor initial workmanship and design have led to continuous challenges with loose and broken granite pavers. In 2009, Colorado Preservation, Inc. designated the 16th Street Mall as one of Colorado’s Most Endangered Places, the youngest project to ever be given this designation. The high cost of annual maintenance associated with repairing and replacing broken pavers on the Mall lead to a Pilot Repair Study in 2011 to design, install, and evaluate new materials, techniques, and installations.

This project has led to several notable findings regarding expansion joint behavior, inclines, new material options, and sealant joint maintenance.

Ian Glaser (JVA, Inc.) – “Structural Condition Issues in Historic Buildings”
The speaker will highlight common yet sometimes difficult to diagnose structural condition issues in historic buildings. Condition issues will be highlighted through a series of six case studies such as:
1. Deteriorated wood framing pocketed into masonry
2. Cracked foundation walls
3. Anchoring into and bearing on soft brick
4. Un-braced truss bottom chords
5. Wetting/drying cycles in masonry foundation walls
6. Swiss cheese shear walls

Natalie Feinberg-Lopez (Built Environment Evolution) – “New Technologies in preservation: XRF Spectrometer & Paint Analysis”
The presentation will provide a brief overview of how an XRF Spectrometer can be used for paint analysis. Case studies will be show as examples.

Jessica Reske (Slaterpaull Architects) – “Masonry Rehabilitation at the Colorado Springs Pioneer Museum”
Masonry rehabilitation at the Colorado Springs Pioneers Museum will be presented including examples of a variety of masonry repairs such as patching, Dutchman repairs, repointing, and re-facing stone throughout the exterior elevations of the building. Complexities of the project such as patching sections of decorative carving will be discussed. Identification of appropriate repair techniques will also be discussed, as some techniques identified on the construction drawings were revised based on in-field conditions.

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