Portfolio - Building Envelope
Client: Bushnell Investments
Description: Bushnell Investment Group retained Oregon Group Architects to provide professional design services for repairs to the exterior building envelope of the Bushnell Building in Springfield, Ohio. Masonry repairs included repair and replacement of brick, sandstone and terra cotta units. Damaged or missing terra cotta units were replicated with new terra cotta units. All deteriorated terra cotta reinforcing or supporting steel was replaced with stainless steel members. Additional internal supporting members were added to ensure decades of stable construction. Masonry tuckpointing was performed as the scaffolding was disassembled. The building is on the National Register of Historic Places and faces the downtown fountain plaza. Under a separate project the windows were replaced in conformance with National Park Standards and the roof was replaced in its entirety.
SINCLAIR COMMUNITY COLLEGE ROOF PROJECTS
Client: Sinclair Community College
Description: Based on the firms experience with roof replacement projects, Oregon Group Architects was selected to provide professional design services for three roof replacement projects at Sinclair Community College.
Building 19 is a 12,000 SF turn of the century building which Sinclair purchased to house their Police Officer Training classrooms and miscellaneous storage requirements. The existing roof was removed to the structural metal deck. Deteriorated metal deck was replaced and a new tapered insulation and 2-ply modified roofing system installed. This project was completed while the building was occupied and classes were taking place. Special coordination of classroom schedules and noise restrictions were required during the construction phase.
Unique to Sinclair’s Building 10 is a pre-cast concrete vault that is an appendage to the building’s primary structure. The three-story vault structure was in need of a new roof and was not accessible except by ladder from the ground. A new tapered insulation and single-ply EDPM roofing system was installed. New openings for a hatch and emergency overflow drain were installed in the pre-cast concrete roof deck.
Sinclair’s Building 17 houses the college’s Department of Facilities Planning and Construction. The building’s 18,600 SF ballasted rubber roof had reached the end of its useful life and was in need of replacement. Oregon Group was retained to design and produce construction documents for the roof replacement project. Roof core samples were taken to identify the current roof system construction and tested for hazardous materials. Additional rigid insulation was added to increase the energy efficiency to exceed ASHRAE 90.1 requirements. A new fully adhered 2-ply SBS modified system was installed and a 20-year warranty provided. All edge metal trim and copings were replaced to provide a completely new roofing system.
Projects at Sinclair Community College are funded using State dollars. All requirements including design submissions, wage reports, and other State of Ohio documentation are coordinated by the firm. Each project has been individually designed, bid and constructed under strict time and budgetary constraints.
EDISON COMMUNITY COLLEGE ROOF PROJECTS
Client: Edison Community College
Description:Oregon Group Architects was selected to provide professional design services for several roof replacement projects at Edison Community College.
East Hall Roof Replacement:
East Hall is a 41,000 SF classroom and administrative office building at Edison State’s main campus in Piqua, Ohio. The two-story structure had an existing stone ballasted single-ply rubber roofing system. The existing metal roof deck and rigid insulation were in good condition and remained. New tapered insulation was added to provide slope to a flat area and provide better drainage to the roof drains. A new fully adhered two-ply SBS modified roofing system was installed. A gray coating was applied to the membrane to reduce heat gain.
North Hall Roof Replacement:
North Hall is comprised of three low slope roof areas surrounding a central two-story gymnasium and conference center. The total square footage of the three roof areas is approximately 13,000 SF. The building was originally built in 1988 and its existing roof areas are comprised of an EPDM membrane over polyisocyanurate insulation on structural metal deck. The existing metal deck and insulation were in good condition and were left in place. The EPDM membrane was removed and an additional high density polyisocyanurate cover board and tapered insulation board installed. The R-value of the roof system was increased to meet current International Energy Code requirements. A new EPDM membrane and coping metal was installed to provide a 20-year complete roof system warranty.
West Hall Roof Replacement:
Scheduled completion Spring 2015
All projects were completed while the building was occupied and classes were taking place. Special coordination of classroom schedules and noise restrictions were required during the construction phase. Projects at Edison State Community College are funded using State dollars. All requirements including design submissions, wage reports, and other State of Ohio documentation were coordinated by the firm.
LONDON CORRECTIONAL INSTITUTE
Client: Ohio Department of Rehabilitation & Correction
Description: Oregon Group Architects was retained to assess the exterior masonry envelope of the London Correctional Institute and provided design services to correct identified deficiencies. Built in three phases from 1924 through 1930, the 425,000 square foot multi-wythe solid masonry structure has had only minor maintenance projects completed in the past 80 years. Our assessment report identified multiple building envelope issues which needed addressed to make a weather tight envelope.
Due to the nature of corrections work, special precautions were identified in the specifications for contractors. Work was phased to limit areas of work in each courtyard, equipment and supplies needed to be secured each evening, all work was required to be conducted on aerial lifts, no scaffolding was permitted on site.
OHIO SCHOOL FACILITIES COMMISSION
BUILDING ENVELOPE COMMISSIONING
Client: Stan & Associates Engineers
Description: Oregon Group Architects is part of a team for commissioning of local district’s new schools. As part of Stan & Associates Engineer’s building commissioning team, Oregon Group Architects was responsible for the building envelope portion of the process. Oregon Group reviewed the Owner’s Project Requirements and designer’s Basis of Design for thoroughness and compatibility with the Ohio School Design Manual. Drawings and specifications were reviewed at Schematic Design, Design Development and Construction Document phases for adherence to the OSDM, OPR and BOD. On-site reviews of roofing systems, wall systems, wall openings, slab and below grade envelope systems and sealant systems for continuity and performance of moisture, thermal, air and water vapor control systems. OGA attended pre-installation conferences and reviewed mock-up panels prior to work commencing.
OSU BRADLEY-PATERSON HALL RE-ROOF
Client: The Ohio State University
Description: Bradley and Paterson Halls are four-story dormitory buildings on Ohio State’s main campus in Columbus, Ohio. The existing 18,000 SF roof system was a built-up coal tar system over a structural concrete deck. The roof was replaced with a 4-ply built-up coal tar system over 4” of new polyisocyanurate insulation board. The roof area included three elevated elevator machine room/stair tower roofs and three large penthouse roof areas with slate shingles. Loose shingles were re-secured and two rows of shingles were removed to allow installation of new flashing for the built-up roofing system. The project included re-flashing the existing scuppers and adding new scuppers to meet new building code requirements. HVAC equipment curbs were raised to accommodate the additional insulation thickness. The buildings’ masonry parapet walls were tuck pointed above the roof line and the limestone caps removed and reset with a new stainless steel flashing system.
300 S. Patterson Blvd. Dayton, Ohio 45402
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