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发布于:2018-1-3 12:24:26  访问:10 次 回复:0 篇
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HOMETIME, How
Framing, or "rough carpentry," is the basic building skill of new construction and almost every remodeling addition project. Each step up in external wall thickness can add 2-3% to the cost of a conventional home; increased insulation levels may be more cost effectively achieved by adding an extra layer of insulating foam, which has the added benefit of limiting conducted heat loss via the framing system, known as thermal bridging or convected heat loss via insulation gaps around the frame.
The process of construction may begin with a concrete slab onto which continuous frames are fixed, or with the placement of piers or pad footings to support piers, bearers and joists — a lightweight flooring system. The new plate washer requirements apply to shear walls designed under the IBC.
Current building code allows building a six story building with a base platform of steel or concrete, which typically means one story of concrete or steel and up to five stories of wood framing. Durable: Metal studs are impervious to fire, termites, rot, splitting, and any other number of hazards which can affect any kind of organic-based building material-namely, wood.
Where the International Residential Code (not California) is adopted; the deck screws or any other screws, are not allowed for fastening framing members (2006 IRC; Table R602.3(1)); nails only and all nails must be smooth-common or deformed shanks, and have a minimum bending yield strength per (a.). Nails listed in the table are 8d, 10d, and 16d depending on the use.
Utilization of wood framed construction for mid-rise buildings, typically constructed from steel or concrete, is on the rise. Typical lightweight construction consists of framed and braced structures with applied claddings. The only disadvantage of platform frame vs. balloon frame construction is that wood shrinkage plays a bigger role in platform frames.
Lightweight timber constructions, especially those with elevated floors or pole framing, lend themselves to easy michael kors handbags australia inspection for termite activity. All factors considered, constructing an interior wall with metal studs is just as much work as using conventional wood lumber.
It allows for going back and editing of walls and windows as well as the creation of roofs. A continuous load path safely transfers the lateral, vertical, and racking loads caused by severe weather and earthquakes from the roof, wall, and floor systems to the foundation.
Joists are the horizontal wooden beams that support the floors. Engineered timber and steel structural design solutions exploit these characteristics to maximise structural capacity whilst minimising materials use, as shown in the design of I-beam structural members, roof trusses and open web joists.
The size, height and spacing of studs shall be in accordance with Table 23-I-R-3 except that Utility grade studs shall not be spaced more than 16 inches (406 mm) on center, or support more than a roof and a ceiling, or exceed 8 feet (2438 mm) in height for exterior walls and load-bearing walls or 10 feet (3048 mm) for interior non-bearing walls.
Illustrated instructions describe each step, from constructing the walls to attaching the trusses to forming a complete roof, all in simple, easy-to-understand language. Snap a chalk line 2 in. below the lowest portion of ductwork or piping and nail a 2×4 to the wall studs at that point.
Switching the exterior wall framing below the podium to other materials typically requires additional insulation in order to compensate for the difference in thermal performance. Build the sloping roof over the walls. Unlike heavy timber or brick masonry, wood framing does not require a special set of skills acquired after years of practice.
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