Building: two floor plans, showing the layout of joists, and details (below). Engraving by E. Turrell, 1847. https://www.rawpixel.com/image/13990151/image-paper-pattern-circleFree Image from public domain licenseBuilding: plans of the four floors of a town house, showing the layout of flooring joists. Engraving by G. C. Jenkinson… https://www.rawpixel.com/image/13995331/image-background-pattern-woodenFree Image from public domain licenseBuilding: two floor plans, showing the layout of joists, and details (below). Engraving by E. Turrell, 1847. https://www.rawpixel.com/image/14012653/image-background-paper-patternFree Image from public domain licenseBuilding: two floor plans, showing the layout of joists, and details (below). Engraving by E. Turrell, 1847. https://www.rawpixel.com/image/13990033/image-paper-pattern-woodenFree Image from public domain licenseBuilding: floor joists, simple and composite wooden beams. Engraving by J. Davis after R. Tredgold, 1820. https://www.rawpixel.com/image/14006731/image-paper-pattern-woodenFree Image from public domain licensePorch plant. Placing joists in floor frames. Southeast Missouri Farms Project by Russell Lee https://www.rawpixel.com/image/12168220/image-frames-plant-personFree Image from public domain license