Using Open-Web Trusses as Rafters for Superinsulated Roofs
2012年12月6日 · Although they are usually used as joists, deep parallel-chord trusses with solid-wood diagonal struts can also be used as rafters. Open-web Triforce rafters being installed on our house. The Triforce joists are made with solid-wood diagonal struts and glued, finger-jointed connections. Detail showing finger-jointed glue joint.
Floor truss spacing and sub-floor options for a "stiff" floor ...
2017年8月5日 · I am currently building a slab on grade home, with 24" deep open web floor trusses (24" selected with the intent of having (2) 20x21" house long chases to run low velocity HVAC ducts, supply and return and avoid bulkheads). My architect, who is admittedly old school/conservative, specified spacing at 16" OC, with 3/4" ply sub-floor. The house is 30' …
Double Stud Wall / Floor Truss to ICF Foundation
Double-stud walls use common materials and familiar assemblies to create a low-tech, energy-efficient wall with lots of room for thick insulation. This framing method virtually eliminates thermal bridging through the studs and greatly reduces sound transmission through walls. The basic strategy is simple: The exterior walls are built from two ...
Floor Truss System - GreenBuildingAdvisor
2022年2月7日 · Even a floor that is L/480 will feel bouncy as the natural frequency is too low. 18' is easy to span and you end up with a much stiffer floor. If you want to keep your basement clear, one option is to split the 76' into three 25' section with steel beams and run your joists in the 76' direction. The shorter 25' is much easier to span with stock ...
Insulating an Exposed Floor - GreenBuildingAdvisor
2013年4月8日 · The floor joists are supported by two beams, each a tripled 2×10. To insulate the floor, Mr. Mike put two layers of R-13 unfaced fiberglass batts in the joist cavities, ran a 3/4-in. layer of Cellofoam foil-faced rigid insulation over the bottoms of the joists, then covered the insulation with 1/2-in. oriented strand board (OSB) to keep out pests.
ICCF Foundation with Open-Web Floor Trusses
2021年10月27日 · The floor assembly consisted of a trimmable open-web floor truss hung on the inside of a Perfect Block ICCF foundation system, which is an insulated composite concrete form measuring 1 ft. wide by 1 ft. tall by 4 ft. long. The roughly 5-in. core of the block is filled with reinforcing rebar and concrete; this system uses up to 70% less concrete ...
Use Plenum Trusses To Keep Ducts Out of Your Attic
2014年1月15日 · Install and seal an air barrier over the top and sides of the reverse bulkhead. The pressure and thermal boundary of the conditioned space moves from the ceiling to the outer surfaces of the reverse bulkhead. 4. Put most of the ducts inside the reverse bulkhead. The IBACOS paper shows a little bit of ductwork coming out of the reverse bulkhead ...
Problems with Attic Trusses - GreenBuildingAdvisor
2024年2月14日 · If you are designing with attic trusses to create conditioned living space, be warned it is difficult to detail this assembly, making it susceptible to heat loss and air leakage. Attic truss framing forms a space that, when conditioned for occupants, is challenging to air-seal and insulate well. Solutions exist; some are better than others.
Deflection for a Stiff Floor - GreenBuildingAdvisor
2021年5月1日 · Keep in mind that the rated deflection is at rated load -- typically 40 pounds per square foot live load plus 10 pounds dead load. A 40-foot joist spaced at 16" is supporting 53.3 square feet so that deflection is at a load of 2666 pounds. A load of one person would give about 1/16" of deflection.
Double-Stud Wall: Floor-Truss Connection - GreenBuildingAdvisor
Double-Stud Wall: Floor-Truss Connection. Together, double-stud walls and floor trusses make an efficient building assembly. Double-stud walls offer a thermally broken wall option that can be easily adapted to meet performance needs in many cold-climate locations. The idea is to increase the space between the walls to increase the overall R ...