PowerPoint Presentation Unit 45 Metal Framing Industry and
PowerPoint Presentation Unit 45 Metal Framing Industry and Code Regulations Lightgauge Steel Framing Members Fasteners Framing Tools Metal Framing Safety Light-gauge Steel Construction Methods Structural Steel Framing Building
Envelope and Insulation Unit 45 Metal Framing The use of light-gauge steel framing continues to increase in residential and commercial construction. Unit 45 Metal Framing
C-shapes, tracks, U-channels, and furring channels are the most common light-gauge steel framing member shapes. Unit 45 Metal Framing
Light-gauge steel thickness is expressed as gauge, mils, and millimeters. Unit 45 Metal Framing The Right S-T-U-F system identifies the web depth, shape, flange width, and steel thickness.
Unit 45 Metal Framing Self-drilling and self-piercing screws are used to connect light-gauge steel members. Unit 45 Metal Framing
A variety of screw head types are available for metal framing operations. Pan, hex washer, and pancake heads are commonly used for light-gauge steel
framing operations. Unit 45 Metal Framing No. 8 screws are used most often as light-gauge steel fasteners.
Unit 45 Metal Framing Drive pins are held in place by the compressive force of metal framing members. Unit 45 Metal Framing
Welding must be performed by a certified welder. Unit 45 Metal Framing Spot clinching is a method for joining two metal framing members and provides a strong connection.
Unit 45 Metal Framing A drywall screwdriver is commonly used in metal framing operations. Unit 45 Metal Framing
Pneumatic steel framing tools are used to install drive pins. Unit 45 Metal Framing When attaching wood to steel, a pin must be driven
so its head is flush with the surface of the wood. Unit 45 Metal Framing An abrasive cutoff saw is used to cut heavy-gauge framing members.
Unit 45 Metal Framing Power shears can cut metal up to a thickness of 68 mils. Unit 45 Metal Framing
Plasma arc cutting is commonly used when prefabricating metal-framed panels in a shop. Unit 45 Metal Framing A locking C-clamp secures metal framing members tightly together while they
are being fastened. Unit 45 Metal Framing Joist thickness and size are determined by the live and dead loads the floor must
support and its unsupported span. Unit 45 Metal Framing The main components of a metal-framed floor unit are the joists, rim track,
cross bridging, and blocking. Ensure framing components are installed in the same direction so cutouts align to allow easy installation of utilities. Unit 45 Metal Framing
Holddowns tie the wall studs and track together and fasten the assembly to the foundation. Unit 45 Metal Framing
Similar to wood-framed floor openings, additional support must be provided around floor openings in metal-framed buildings. Unit 45 Metal Framing In-line framing requires that the joists, studs, and
roof rafters be in a direct line 3/4. Unit 45 Metal Framing Studs fit into the top and bottom tracks and are secured with
one #8 screw in each flange. Studs should be oriented the same way to ensure utility cutouts align properly. Unit 45 Metal Framing
The bottom track of a wall is secured to the foundation with anchor bolts. Bottom tracks must be reinforced to ensure a proper connection.
Unit 45 Metal Framing The main components of an exterior wall placed over the floor unit include top and bottom tracks, studs, diagonal tension
straps, horizontal bracing, strap stud bracing, and corner posts. Unit 45 Metal Framing Reinforced headers are required in load-bearing walls. Box beam, back-to-back, or L-headers may be used.
Unit 45 Metal Framing An inside corner post provides support for interior wall finish materials. Unit 45 Metal Framing
A short piece of stud material is commonly used to splice tracks. Unit 45 Metal Framing After a wall has been
framed and squared, it is raised into position. Temporary diagonal bracing remains in place until structural sheathing is fastened to the wall.
Unit 45 Metal Framing A continuous strap beneath the joists and solid bridging 12 OC are attached to the ceiling joists to provide rigidity.
Unit 45 Metal Framing When joists are lapped over a load-bearing wall, studs should be placed directly below the lapped ends. A bearing stiffener provides additional support. Unit 45 Metal Framing
Where a wall below runs parallel with the joists, blocking is placed a maximum of 48 OC between the joists for fastening the tops of the wall to the ceiling. Unit 45 Metal Framing A light-gauge steel roof
framework requires considerable bracing. Unit 45 Metal Framing Light-gauge steel trusses are very frequently installed over steel-framed walls.
Unit 45 Metal Framing Light-gauge steel trusses are commonly prefabricated in a shop. Unit 45 Metal Framing
Seismic and hurricane ties should be used to tie metal-framed walls to metal trusses in areas prone to earthquakes and severe winds. Unit 45 Metal Framing Structural steel
framing is on the increase for residential and light-commercial buildings. Large open spaces can be created within a structure.
Unit 45 Metal Framing Bolted connections are commonly used for structural steel framing. Unit 45 Metal Framing
Spaces between structural steel framing members are filled with heavy-gauge steel framing members spaced 16 to 24 OC. Unit 45 Metal Framing
Window and door openings are framed with wood or heavy-gauge steel framing members. Unit 45 Metal Framing
Oriented strand board or plywood is typically used as wall sheathing on steel-framed buildings. Unit 45 Metal Framing When installing a
brick veneer wall, the wall ties are fastened to the sheathing and metal studs and embedded in the mortar between bricks.
Unit 45 Metal Framing Exterior insulation and finish systems are commonly installed over metal-framed buildings.
Unit 45 Metal Framing Insulation for steel-framed buildings can be rigid foam insulation, fiberglass blankets or batts, or a combination of both.
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