Dave,
I have seen curved wood mouldings constructed in this manner before. However, the orientation of the wood strips in your sample appear to be running 90 degrees to what I would expect to see for a curve in plan.
Typically, if the moulding is curved in plan, the thin wood strips are vertical, bent and glued around a form with the same radius as the inside radius of the moulding. This creates a "blank" with the desired height and projection of the finished moulding. The blank is then run through a shaper, or moulder, with a bit of the same profile as the matching straight moulding. A jig, stops or guides are placed on the table of the shaper or moulder to keep the face of the blank tangential to the face of the bit as the moulding is cut. This method is used a lot for curved stair railings. If the moulding were curved in elevation (arched) the strips are stacked vertically over a form, to build up the blank. The actual moulding process is similar. This is called the "bent lamination" method.
Another method uses laminated blocks, which are cut to the curve in plan or elevation, and then stacked and glued together to build up the blank, and them moulded similar to the process above. This results in a lot of waste in creating the blank,as the staves have to be cut from a wider board, to get the desired curvature.
See attached page from
Architectural Woodwork Standards - 2nd Edition, illustrating the two methods.
Since you say the moulding was part of the gutter assembly, I'm assuming the top of the moulding is to the left in the photo. If the top is actually to the right, the wood strip orientation would make more sense, if the curved block or stave method were used.
As the house was constructed in 1902, the moulding was most likely produced by a woodworking mill. Even if there was not a local mill, in the early 20th Century, this type of work could be ordered from major mills located some distance away, and shipped to the site by rail.
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J. Hairston AIA
Senior Architect
Gardner Architects
Oklahoma City OK
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Original Message:
Sent: 04-24-2020 17:32
From: David Ely
Subject: 1902 Residential trim
Has anyone seen radiused trim constructed in this manner. Was this fabricated in a shop or on site? This trim was used as the leading edge of the radiused built-in turret gutters. The straight sections are solid 2" thick poplar.
Would love to know a little bit more about it.
Dave Ely, AIA, LEED GA
Senior Associate
direct 256.704.1831 ● mobile 256.426.5895
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