Unit 13Residential Framing Prints Learning Objectives (continued) • Explain the differences between platform, balloon, and plank-and-beam framing. • Understand stair details and terms. • Recognize metal framing systems.
Wood Framing • Widely-used • Affordable • Durable • Dependable • Flexible construction methods • Widely-known framing methods
Floor Framing Components Sill Plates • Attached to the top surface of the foundation wall. Header • Nailed to the top of the sill plate. Joists • Floor support beams. Subfloor • Covers the joists. • Typically plywood, but may sometimes be lumber.
Floor Framing Components Double Header • Used when a framing pattern is disrupted, typically by an opening. Double Trimmer • Two joists nailed together next to an opening. Tail Joist • Runs between the double header and sill plate. Ledger • A small piece of lumber nailed to the bottom edge of a double header.
Joist Size Spacing Floor Framing Components Bridging • Small member between joists to provide lateral support. Floor Framing • Shown on the floor plan. • 2 x 12 Joists @ 16" O.C.
Dimensioning • Exterior Walls • Dimensions are given to the outside edge of the studs. • Interior Walls • Dimensions are given to the centerline of the studs. Check drawings carefully to verify the dimensioning practice used on any given set of plans.