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20190043 2016031010105260 BUILDING THE SHELL SHEATHING Sheathing is sheet material, such as plywood or OSB, which braces the wall and provides a nailing surface for most types of siding. Diagonal metal straps or let -in 1x4 boards are sometimes used to brace the walls when siding can be applied directly to the studs. But inlitp#'�-qual'►tj care usu-AN sheathed with solid material. Some materials, such as textured plynood sidin%, fuc►cttot► as �rnrh.xbFatl�ir�garad_sidir.� ..s�iir�dn���f and(a6or. Plywood sheathing must be at least 3/s inch thick; at least %z inch thick if you will nail shingles or stucco lath to the sheathing. Panels may be installed either horizontally or vertically, but all seams must fall over framing members or blocking. if the height of the framing from mudsill to cap plate is more than 96 inches, install a filler strip of sheathing from just below the mudsill to the midline of the soleplare. Above the filler edges and every 1 the center with 6d coi box nails. Install blocking seams that do not fall on fran your plans for additional nailing that might be required in areas ►; earthquakes or high winds are lik construction on a steep hillside. Cut the sheatlhing flush WAX edges of rough openings for win{ doaxs, You, �.an taker�ef►ti_me.� before installing the parcels. Most however, install full panels, then openings later with a reciprocatin If you are installing textured pl siding without additional sheathi2 addition has no soffits, notch the the panels to fit around the rafter; edge of the siding against the and roof sheathing. When siding will be installed o without sheathing, install perman 5 8 BUILDING THE SHELL Joist Center ridge board on addition hanger and line up with upper INSTALLING RAFTERS edge of existing continued end rafter Mark ridge board to match INSTALLING RAFTERS WITH NEW RIDGE - -�� rafter positions on plates BOARD PARALLEL TO OLD = Set first 3. Instal joist the width of a rafters it y rafter from Toenail ` the end ends t _ plate: 8d n the wig i n: t 1 boar( nailing the i side and toenailing Use metal connector Alternate this nailing segs in special situations Temporary braces the ridge. 4. If you live in an area prone to or hazardous winds, ask local code NEw RIDGE PARALLEL TO OLD about additional requirements for rafters. You may only need to add Installing rafters with the ridge parallel to ties at the tops of the rafters, or bi the old one is not as difficult as installing codes might require metal framini a perpendicular one. Here's how to do it: hurricane ties to secure the rafter: 1. If the existing roof has an overhang, cut and the ridge board. it back to the last rafter that is flush with the 5. Install the rake (or barge) raft( framing of the existing end wall. rafter tails will be covered by fasci I U 2. Butt the ridge board to the edge of the last extend the fascia boards and the r house rafter, holding it in place with a joist beyond the end rafters far enough hanger. Brace the other end temporarily. the rake rafters. Nail blocks berwc and end rafters every 16 inches. If l �7 0 Rake rafters be no fascia boards, support the ra with 2x4 lookouts let into the Iasi rafters on 2 -foot intervals. 6. Nail blocking between tl above the cap plates. W f0 —� ceiling or roof will 1 Q f._ leave 1 inch at the blockin_ for vena 50 BUILDING THE SHELL RAISING A WALL nap a chalk fine 3%2 inches inside the edge of the subfloor (5!/2 inches for 2x6 walls) to mark the edge of the wall. As a safety precaution, nail vertical blocks to the outside of the rim joist to keep the base of the wall from sliding off as you lift it. Then lift the wall into place. Nail through the soleplate and subfloor into the joists with 16d nails. Using a 4 -foot level, plumb the wall and nail it to the house framing. Next, plumb the wall at the corner, and brace it temporarily as shown in'the illustration below. When all of the walls are in place, install the cap plates, overlapping at all corners. Chalk line 3'/2" inside edge of subfloor ALIGNING AND BRACING THE WALL If you built a long wall in two se make sure the cap plate extends 4 feet beyond the joint in both d You can install permanent bra or after the roof is on. Covering plywood, oriented -strand board, structural sheathing satisfies the requirement for bracing. Use a long level to align the new stud wall vertically and nail it to the existing house .0 42 BUILDING THE SHELL iFF1-A?A1Nr ,r1ff JFJMR ANATOMY OF A WOOD -FRAME FLOOR New access Joist hale Ledger hangers board i As cti ! 45-10CIr - Foundation wall ATTACHING THE MUDSILL Grout 7 X p� PC -S Subfloor Pkier _ Girder ._ Footing-- m � Rim joist � y t Anchor II bolt The sills, or mudsills— r the bottommost pieces `-_ of wood in a building— are secured to the ii foundation by i, -inch anchor bolts. The floor framing is nailed to the Sills, which are usually 2x6 or 2x8 pressure- treated pine. iTo attach the sill, first check the plans to see whether it should lie flush with the outside edge of the foundation wall or should overhang the edge to allow for exterior foam foundation insulation. Next, mark the locations of the anchor bolts by laying the sill next to the bolts. Drill 3/4 -inch -diameter holes at the marks. If the flatness of the top of the foundation varies by more than r/4 inch, mix a small batch of mortar and fill the low spots before laying the sill. For basements or heated crawl spaces, mudsill closed -cell plastic foam insulation, the sill to stop air infiltration. In some areas, a metal termite sh must also be installed under the sill 10 -inch -wide aluminum flashing of foundation so it laps 2 inches over edge; push it down over the bolts a it tight. Cut bolt holes with a utilit Cover the aluminum with roofing i especially around the holt holes an splices— just before installing the Then set the sill in place. Using chalk line as a guide, keep the sill as you tighten the bolts. A girder can be a solid beam or it built from 2x lumber. Building cod require at least 3 inches of bearing under each end of a girder. If the g pressure -treated, line the foundad( with aluminum flashing or asphalt prevent direct contact with the co Shim or notch the girder to bring flush with the sill. 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