LEED is a registered trademark of the U. Green Building Council. Get In Touch. Building with Big Sky Big Sky is a member of your team, assisting your architect and contractor in the design-build process.
FAQs Answers to home and business owners' most frequently asked questions. Designing With Big Sky Big Sky prides itself on its service and experienced support for architects and designers. Technical Bulletins. See detail P Continue installing wall panels by following construction details and working in sequence around the building.
Install splines and lumber before standing wall panels to save time and for ease of installation. To double check that the panel you are working with is oriented correctly, make sure that the horizontal wire chases are located at the bottom of the panel when installed.
Use construction sealant on all wood-to-wood connections and expanding foam sealant on all wood-to-foam connections. Make sure to double check the fastener schedule for all fastener spacing. If any fastener is missed during the installation process, make sure to go back and complete all fastening requirements. See Technical Bulletin for more information.
When installing roof panels it will benefit the installer to do as much prep work as possible while the panels are still on the ground. Installing lumber and splines to the panels while on the ground will make for a more efficient time savings. When applicable, multiple panels can be assembled on the ground together and lifted as an assembly. Steel lifting plates, available from Porter Corp, can be used to hoist the panels from the ground to where they will be installed on the roof.
The lifting plate is a steel plate that is anchored to the outside face of the OSB with multiple 10 coarse full thread wood screws and provides a solid point to attach straps.
It is important with the roof panels that the panel connections are well sealed to prevent any air leakage as this may cause long-term problems with the integrity of the panels, not to mention loss of efficiency of the panel system. Construction details provided with each job show how to best seal the SIP assembly. After roof panels are installed, make sure that all panels are fastened to the beams, trusses, and bearing walls of the structure.
When the roof panels are completely installed, fastened, and any gaps are filled with expanding foam sealant, vapor tape and roofing should be applied as soon as possible. It is a good idea, and strongly recommended, to apply roofing felt onto the roof panels the same day the panels are installed. In general, SIP construction is easier when things are planned ahead of time. Wiring in SIPs is no different. When electrical installation in SIPs is aforethought, not an afterthought, it will be much faster and easier.
Porter Corp typically installs wire chases per this standard, but wire chases can be installed to exactly match an electrical plan. Custom wire chase placement per an electrical plan is done at the time the panel layout drawings are made, so Porter Corp would need a detailed electrical plan at that time for this to be feasible.
See Technical Bulletin for more information on electrical wiring. Home Products Gallery. Meet with all subcontractors and key personnel before construction to review the plans and discuss sequencing. Either train yourself on SIP installation or have trained personnel involved in the project at as early a stage as possible. Know the location of structural point loads. Continuously check the accuracy of shop drawings to ensure the installation matches the intent of the plans.
In general, the entire exterior wall needs to be supported all the way to the foundation. Plan for a single ridge beam if possible for simplicity of installation. The ridge beam generally has several intermittent load points that transfer the design load to the ground. Understanding where these load points are located is important to maintain not only the needed structural support within the conditioned space but also to maintain chase ways for HVAC, plumbing, and electrical distribution.
Make sure that the window and door rough openings are correctly placed in precut panels. Avoid designs that call for ganged or mulled windows because they are heavy, awkward to handle, and harder to install.
They also require more solid wood headers in the SIP panels, resulting in potential thermal bridging. Make sure that the HVAC chases are specified and maintained as construction proceeds.
Make sure the electrical plan is complete and reflected in the panel cut drawings sent to you for your approval prior to panel fabrication.
Keep all plumbing out of exterior walls and keep the electrical in exterior walls to the bare minimum. Run all vertical chases into floor spaces by routing from exterior to interior walls and then up or down. Protect the panels prior to Installation.
Avoid damaged panels. Ideally have the foundation assembly completed just before the arrival of the panels. To protect the panels and minimize handling, stack the panels high, dry, and flat and in the order they will be needed as when assembly begins. Manufacturers ship groups of panels that will be erected together. Panels should be stacked off the ground on 4 X 4 timbers no more than 6 ft. Avoid locating the stacks above standing water and wet soils.
Place a ground cover down first to avoid soil moisture driving conditions transporting ground moisture up into the panels and causing edge swelling. Reusable tarps are easily held in place by wedging scraps of wood into the recessed cut-outs for the splines at the ends of the panels. Make sure the panels lay flat while stored on site. Figure 2. SIP panels should be stacked high, dry, and flat. Figure 3. An all-terrain forklift is used to move and stage the panels.
Ensure the foundation is plumb, level, and square. There is less tolerance for foundations that are not level in SIP construction than in stick frame.
Double-check to make sure you have the right dimensions for the footer, foundation wall, and floor on the design drawings, and measure for confirmation of plumb, level, and square of the footer, foundation wall, and floor during construction. The concrete subcontractor needs to understand that a SIP foundation must be closer to plumb, level, and square than the typical residential construction industry accepted standard.
The outside facing of the SIP must have continuous structural support for the full length of the bottom edge. It should sit on, not hang over the edge of the top plate. Install a termite shield and capillary break between the sill plate and foundation wall; this can be aluminum flashing that covers the top of the foundation from the inside to outside wall surfaces. Figure 4. Assemble the Walls and Roof.
For assembling the exterior walls there are two general approaches: 1 assemble 4x8-foot SIP panels manually or 2 assemble 10xfoot panels with rough openings precut that are lifted in place with a crane or fork lift with a high boom pole See Figures 5 and 6. Larger wall panels have fewer seams, which reduces both thermal bridging and the risk of air leakage.
For assembling the roof, use a boom truck and crane with proper rigging to lift the ridge beam and SIP ceiling panels. For quickest assembly, use a single ridge beam and have it available on site to lift in place as soon as the walls are up, plumbed, leveled, and squared. Have the roof panels and crews in place so that once the crane arrives and the beam is placed, the roof panel placement can commence immediately, so that rigging time and costs are minimized.
Figure 5. Walls are being assembled at this SIP house. Figure 6. A crane is used to install the SIP fireplace chimney chase. Connect the panels together.
The SIP package will have with it a detailed set of plans and instructions with corresponding panel numbers marked on both the plans and on the panels themselves. The shipment will also include connecting splines and caulking to connect the panels to each other.
The three most common splines are shown in Figures 7, 8, and 9. The structural spline a solid 2x should only be used when the load cannot be carried by the panels alone. The surface splines almost completely eliminate thermal bridging. Some splines can be installed by the SIP manufacturer in one of the panels in the factory, which saves site assembly time. Figure 7. A surface spline reduces thermal bridging much more than a structural spline at SIP panel seams.
Figure 8. An insulated spline is another option for avoiding thermal bridging at SIP panel seams. Figure 9. A structural spline made of a solid 2x is used where needed to meet structural load requirements at SIP panel seams. Figure Make sure the beads of caulk are continuous the full length at each SIP panel seam, such as at the wall-roof seam, to maintain air barrier continuity. Cut panels for window and door rough openings. In pre-manufactured SIP kits, the rough openings for windows and doors are all pre-cut and routed.
However if the raw panels are used, these openings will need to be made on site. First mark the rough opening on the SIP. The rough opening can be in one or two panels. If the width is greater than 5 ft. The opening is easily cut with a light-weight chainsaw with a stable base plate. Once the panel sections are knocked out, remove foam from all four sides to a depth of 1. Apply a bead of caulk to the inside surface of both faces all the way around the opening and apply a bead of expanding foam to the foam core.
Install the 2X sill cut to 3 inches longer than the rough opening width, than install the same length header.
0コメント