Plank Frame Barn Construction

Chapter 8: Criticism of Plank Frame Barn Construction.

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About This Book

A practical manual explains the plank-frame system for barn construction, presenting step-by-step guidance for builders and farmers seeking an economical alternative to traditional timber framing. It outlines the system's claimed benefits—substantial timber and labor savings, easier use of imperfect lumber, faster framing, and improved interior usability—while noting durability and straightforward options for later additions. Detailed descriptions and scaled figures illustrate component assemblies such as posts, plates, purlins, braces and ties, bent layouts, basement integration, and roof variations including gable and gambrel. The text supplies construction tips, splicing and joint methods, material lists and worked examples to support practical application and local adaptation.

Criticism of Plank Frame
Barn Construction.

From J. M. B., Monroeton, Pa.—In the December issue of Carpentry and Building, page 327, the correspondent “S. H.” of Minneapolis wants to know the weak points of his barn frame, a sketch of which was presented in connection with his communication. I think one weak point is what he calls the plate in the gable, which is made of two 2 × 8 inch pieces, equal to a 4 × 8 inch, with a span of at least 30 feet between purlin posts, which are only 2 × 6 inches. In my opinion, with the hay mow filled with hay, the gable will bulge or spring out, as the weight, 45 to 50 tons, will exert quite a pressure. As to the remedy I am not so clear. He might use a flat truss or a beam large enough to stand the pressure; one, say, 16 inches wide at the center and tapering to 8 inches at each end. I will say, in conclusion, that I have had no experience with plank frames.