![]() Typical for our region, we applied 1x3 furring strips on 16-inch centers to the Insulation, creating an unvented "hot roof." We avoided the entire issue by blowing in Icynene foam The hip rafter and not at the ridge, leaving no practical means of carrying air Venting a hip roof is problematic because most of the rafter bays terminate against V-crimped copper valleys and copper stacks are both durable and The tall walls allow for a generous overhang without cramping the tops of the Roofs with a combination supporting and supported valley. Hip provided support for the ells' valley rafters. In addition to carrying the 2x12 rafters, each The hips butted against aĤx4 nailing block at the ridge. The heel and a square-faced plumb cut at the ridge. We used double 1 3/4-by-12-inch LVL hips, following the computer-engineered framing Perfectly plumb throughout the roof framing process. We were pleased to find that the steel braces held the walls That involved pulling the temporary springīraces on the walls. To work comfortably at the roof peak, which was 21 feet above the deck, we set Rafters running from top plate to hip rafter hold up the small ell gables. One another at the peak and need no further means of support. Restrained by the steel brackets at the corners, the structural hips bear against Top plate over the assembly, first tracing the bolt-hole locations onto the platesĪnd predrilling them for lag screws. After wrestling the steel into place, we installed a second 2圆 The plate between bracket locations with plywood to accommodate the thickness While waiting for the steel brackets to be delivered, we went ahead and packed We set the lines on 2-by offset blocks inside the top plates and usedĪ 2-by block as a feeler gauge to check the alignment. On three sides by the ells, so we stretched string lines from corner to cornerĪcross the gaps and left them in place for constant reference against possible The main square of the building was interrupted Hip rafters, we took great care to square, plumb, and brace the four supportingĬorners to tight tolerances. ToĮnsure that we wouldn't be struggling to fit the heavy, 20-foot-long double LVL We framed the walls with 2圆s on 16-inch centers, topped by a single plate. ![]() The brackets were sandwiched between the top plates lag screws hold the The saddle at the corner of each bracket is pre-drilled for a 1/2-inchīolt. Reinforce the corners of the building against the outward thrust of the double-LVL ![]() The brackets were drilled with 3/8-inch-diameter holes for lag-bolting to the plate, and the saddles were drilled to receive two 1/2-inch through-bolts to secure the hip rafters.įour L-brackets custom-welded from 1/4-inch steel plate To fight the doubled LVL hips into place. The saddles have a 3 5/8-inch spread, giving us a little slack so we didn't have Welded on diagonally to form a saddle that catches the ends of the hip rafters. At the corners of each L are two rectangles of steel, We used 1/4-by- 4-inch steel plate to make the 5-by-ĥ-foot L-bracket arms. Of the hips, we opted to use custom-made steel L-braces on the top plates toĪ local steel fabricator made the brackets, based on a plywood pattern I gave Top plates, and framing nails to hold the corners together against the thrust But, rather than expect the sidewall sheathing, overlapping We reasoned that as long as the corners couldn't move or separate, Ultimately, we decided to use the four main building corners to lock the hips Instead of taking the obvious route and persuading the client to accept a few ties in the final design, we decided to find another way to frame the roof to resist the outward thrust of the hips and the tendency of the rafters to sag under a snow load. Still, with my background in architectural engineering, I recognized a structural challenge. This wasn't an oversight, but was intended to create an expansive interior space. Or other means of bracing for the full cathedral hip roof covering the pool house. On this job, I noted that the framing plan showed no collar ties, cables, The keys to working successfully with an architect is to build the project exactlyĪs drawn. On new construction, like the architect-designed pool house shown here. My small remodeling company specializes in renovation, but we occasionally take Custom steel brackets at the corners keep the hips from spreading
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