Historic Preservation Commission Agenda and Packet 2011 11 21

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To: Project Owner: Project Location: Dear Sean, ❑ JVA, Incorporated 1319 Spruce Street Boulder, CO 80302 Ph: 303.444.1951 Fax: 303.444.1957 Web site ❑ JVA, Incorporated 25 Qd Town Square Fort Collins, CO 80524 Suite 200 Ph: 970.225.9099 Fax: 970.225.6923 ❑ JVA, Incorporated PO Box 1860 79050 US Highway 40 Winter Park, CO 80482 Ph: 970.722.7677 Fax: 970.722.7679 www.jvajva.com E -mail: info @jvajva.com TECHNICAL ASSISTANCE MEMO Sean McCartney City of Louisville Planning Department 749 Main Street Louisville, CO 80027 Janice Hoffman Residence 1131 Jefferson Avenue Louisville, CO 80027 Memo Date: JVA Project #: Field Visit #: Visit Date: Present at Site: April 6, 2011 15074 1 March 31, 2011 Janice Hoffman (Homeowner) Burt Brucker (Contractor) Ian Glaser (JVA) JVA, Inc. visited the Hoffman Residence, a recently designated Louisville Historic Landmark, on March 31, 2011. The purpose of our visit was to assess the property's roof framing. We spent approximately 2 hours on site, primarily in the accessible portions of the attic. Our findings are as follows. Description: The main portion of the residence is approximately 32 feet by 46 feet with the long direction aligned in the east -west direction. There is a porch along the east elevation, fronting Jefferson Avenue. There are two smaller adjoining portions of the house along the west elevation. The house is one story, with a full basement under the main portion of the house. The Homeowner reported that the house was built around 1934. The roof over the main portion of the house is gable framed on a 6:12 pitch. The rafters are 2x4s spaced at 24 inches. At the ridge, the rafters abut one another and are connected with two toenails. There is no ridge board or ridge beam. The rafters cantilever over the exterior bearing walls to form the eaves. The roof framing is surfaced with 1x6 skip sheathing with 2.5 inch gaps between boards, cedar shakes, and several layers of asphaltic shingles. The ceiling joists are 2x4s spaced at 16 inches and are supported by the exterior bearing walls and a centrally located bearing wall. The joists are approximately 16 feet long and are lapped over the interior bearing wall. Over the Kitchen, the ceiling joists were surfaced with gypsum board. Ceiling finishes were not observed elsewhere since they were concealed by insulation, but are expected to be plaster and wood lath. In the attic space, two intermediate lines of support were added sometime after the original construction. Approximately 6 feet from the north and south bearing walls, 2x4 dropped beams support the rafters. These dropped beams are supported by 1x6 props at approximately 6 feet spacing. The props are side - nailed to a bottom 2x4 plate oriented on its side across the top of the ceiling joists. The gable end walls are framed with 2x4s at approximately 30 inch spacing and are surfaced with 1x diagonal sheathing. The porch roof and the roof just west of the main portion of the house are similarly framed with 2x4 rafters and ceiling joists on a 6:12 pitch. The roof framing over the furthest west portion of the house was not accessible. This portion of the house appears to have been added sometime after the original construction. Page 1 This site visit was made to observe the progress and the quality of the portion of the construction work related to JVA's engineering services and to determine whether that work was in general conformance to the Contract Documents. JVA's observations are intended to protect the interest of the Owner and the public. JVA is not responsible for the Contractors work, work methods, safety precautions, timeliness in the perfom once of the work nor any other aspect of the construction for which the Contractor has responsibility.