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  Encyclopedia of Keywords > Society > Culture > Architecture > Roofs > Rafter   Michael Charnine

Keywords and Sections
HIP
LOAD
RAFTER TABLE
SIDE CUT
RAFTERS
SEAT
BEAM
LENGTH
JACK RAFTER
TOTAL RUN
GABLE ROOF
DISTANCE
COMMON RAFTER
TOP PLATE
GIRTS
STRUCTURAL
MEMBER
SPAN
EXTERIOR WALL
HIP RAFTER
SIZE
TOP WALL
VALLEY RAFTER
Review of Short Phrases and Links

    This Review contains major "Rafter"- related terms, short phrases and links grouped together in the form of Encyclopedia article.

Definitions

  1. Rafter: The main beam supporting the roof system.
  2. Rafter - The framing member which directly supports the roof sheathing.
  3. A rafter is a structural member, a type of beam, which supports the roof of a building.
  4. Rafter - A roof beam sloping from the ridge to the wall.
  5. Rafter - One of a series of beams that form the slope of a pitched roof and are analogous to floor joists.

Hip

  1. The hip jack is a short rafter that spans from the wall plate to a hip rafter. (Web site)
  2. Jack rafters complete the framing on a hip roof from the hip to the top plate, starting a the common rafter down to the top plate or tail of the hip rafter. (Web site)
  3. The main element in a hip roof is the common rafter. (Web site)
  4. In the figure, the hip rafter is framed against the ridge. (Web site)
  5. The best example of this type of rafter is the gable roof. (Web site)

Load

  1. Rafter - Lumber used to support the roof sheeting and roof loads. (Web site)
  2. CONCENTRATED LOAD – A load applied to a structural element at one point rather than uniformly across a span, such as a heater unit hung from a rafter. (Web site)

Rafter Table

  1. The angle of the side cut of the hip and valley rafters are also given on the rafter table.
  2. Another method is to use the fifth line of the unit length rafter table, which is headed SIDE CUT OF JACKS USE (fig. (Web site)
  3. Like the unit length of a common rafter, the bridge measure of a hip rafter can be obtained from the unit length rafter table on the framing square. (Web site)
  4. In the third column of the rafter table (see my article for more info) on the square is the length of hip or valley rafter.

Side Cut

  1. This is the angle of the side cut which is marked on the top edge of the rafter.
  2. Start at the common rafter and go down the hip layout two jacks opposite to each other on the side cut.
  3. The tail of the rafter must have a double side cut at the same angle, but in the reverse direction.

Rafters

  1. Tail Cut The plumb cut at the bottom end of a rafter. (Web site)
  2. This is found by using the rafter table and multiplying the horizontal overhang by the unit run on the hip, which is 17.69".
  3. Usually a smaller member nailed to a larger rafter to form a cornice or roof overhang. (Web site)
  4. The post and rafter is a simple construction of an embedded post and rafters, but it requires more wood or metal than some other designs.
  5. In figure 2-27, a fascia rafter is nailed to the ridgeboard and to the fascia board.

Seat

  1. Heel The thickness of the rafter or truss vertically above the seat cut or bearing surface on the wall. (Web site)
  2. Match the lower right-hand corner of the pattern (seat edge) with the third, last line marked on the edge of the rafter. (Web site)

Beam

  1. In post and beam endwall frames, endwall columns also support the rafter.
  2. RAKE BEAM – Cold-formed endwall rafter “C” section. (Web site)

Length

  1. As indicated in figure 2-54, the line length ends of the ridge are at the points where the ridge centerline and the hip rafter center line cross. (Web site)
  2. In this method of framing, the actual length of the ridge exceeds the line length at each end by one-half the thickness of a common rafter. (Web site)
  3. This means that for every unit of run (16.97) the rafter has a line length of 18.76 inches.
  4. It combines procedures for laying out the rafters with a procedure of stepping off the length of the rafter (see fig.

Jack Rafter

  1. Now the jack rafter must be cut and installed.
  2. This means that, in an equal-pitch framing situation, the unit of rise of a jack rafter is always the same as the unit of rise of a common rafter.
  3. In addition, a valley cripple jack rafter is placed between the supporting and shortened valley rafters.

Total Run

  1. CALCULATING LENGTHS OF COMMON RAFTERS.— The length of a common rafter is based on the unit of rise and total run of the roof.
  2. Step 3. Multiply the total run (12.5) by the length of the common rafter per foot of run (13.42 inches) (fig.
  3. The length of a hip rafter, like the length of a common rafter, is calculated on the basis of bridge measure multiplied by the total run (half span).

Gable Roof

  1. A shed roof common rafter has two bird’smouths, but they are laid out just like the bird’s-mouth on a gable roof common rafter.
  2. Barge Board The exterior finish nailed to the side of the end rafter or truss of a gable roof. (Web site)
  3. For a gable roof, the rafter locations are laid out on the rafter plates first.

Distance

  1. Like the rigid frame, the post and rafter design allows more space along the sidewalls and efficient air circulation.
  2. The rafter is on a slope and the cut is vertical or plumb. (Web site)
  3. A rafter that spans the distance from the wall plate to a hip, or from a valley to a ridge. (Web site)
  4. UNDERHUNG CRANE – A crane that runs on a track suspended from the rafter of a structure. (Web site)
  5. Projection, the horizontal distance from the building line to the rafter tail, must be located from drawings or specifications.

Common Rafter

  1. This represents the amount the depth of the hip rafter bird’s-mouth should exceed the depth of the common rafter bird’s-mouth (view D).
  2. The unit of rise of a hip rafter is always the same as that of a common rafter, but the unit of run of a hip rafter is a fixed unit of measure, always 16.97. (Web site)
  3. Since a hip rafter joins the ridge at the same height as a common rafter, the total rise for a hip rafter is the same as the total rise for a common rafter.

Top Plate

  1. A level seat cut is placed where the rafter rests on the top plate.
  2. However, the total run of a shed roof common rafter is equal to the span of the building minus the width of the top plate on the higher rafter-end wall (fig.

Girts

  1. The two-part trusses will be structurally joined on site and instructions for this will normally be provided by the trussed rafter fabricator.
  2. WEB – The part of a channel, purlin, girt, column, or rafter between the flanges. (Web site)
  3. Bearing Frame Endwall Frame composed of corner columns, end columns, flush girts, and channel rafter beams, which is designed to carry one-half bay weight. (Web site)

Structural

  1. RAFTER – A fabricated roof-framing member that supports the roof secondary framing members. (Web site)
  2. A structural system consisting of a series of rafter beams supported by columns.
  3. Rafter. One of a series of structural members of a roof designed to support roof loads. (Web site)
  4. A structural support projecting from a column or rafter to which another structural member is fastened.
  5. R. Rafter A fabricated primary structural member with parallel flanges that extends from haunch to apex. (Web site)

Member

  1. The valley rafter is normally made of double 2-inch-thick members. (Web site)
  2. The upper end 9 of the tie member 1 will fasten to the end of the roof rafter 2 comprising one fastening point.
  3. The A-frame greenhouse is similar to the post and rafter construction except that a collar beam ties the upper parts of the greenhouse rafters together.

Span

  1. Suppose, however, that there was an odd unit in the common rafter total run. (Web site)
  2. The total run of a common rafter in the addition is equal to one-half the span of the addition.
  3. Then, one-half the span, which is the same as the total run of a common rafter, is 15 feet.
  4. Since the total run of the rafter is 21.21 feet, the length of the rafter must be the value of x in the proportional equation 16.97:18.

Exterior Wall

  1. Common Rafter One of a series of rafters extending from the top of an exterior wall to the ridge of a roof. (Web site)
  2. The view shows the intended fastening points for this invention onto a building's roof rafter and the exterior wall structure.

Hip Rafter

  1. The hip rafter is a diagonal of the square formed from the two common rafters and the two outside wall lines.
  2. The length of the diagonal is the run of the hip rafter.
  3. A common rafter is one which runs square with the plate and extends to the ridge.
  4. For every 12-inch step in a common rafter, a hip rafter has a 17-inch step. (Web site)
  5. On a Quonset, the sides and roof are one unit; measure the length of the curved rafter (ground to ground) and multiply by the length of the house.

Size

  1. If the common rafter is a 2x8, rule of thumb and most building codes call for the hip to be the next size up, in this case a 2x10. (Web site)
  2. The bolts 7 should be vertically centered at the end of the roof rafter 2 and horizontally spaced according to the size of the roof rafter 2.
  3. Set the unit of rise, whatever it might be, on the tongue even with the same rafter edge.
  4. The size of a hip rafter is determined by the size of the common rafter. (Web site)

Top Wall

  1. This is a notch cut in each rafter where the bottom part of the rafter rests on the top of the wall. (Web site)
  2. Plate Line A line scribed or marked on a rafter that corresponds to the outside face of the wall. (Web site)
  3. The common rafter sits on top of the wall, its length meets the ridgeboard at the center of the building, making up half the span. (Web site)
  4. Backing means to bevel the top edges of the hip rafter (see fig.
  5. The rafter locations should be marked on the top wall plates when the positions of the ceiling joists are laid out.

Valley Rafter

  1. The valley jack goes from a valley rafter to the roof ridge. (Web site)
  2. These roofs slope to the valley rafter which bisects these roofs at a 45 degree angle. (Web site)
  3. A valley rafter extends from an inside angle of the plates toward the ridge of the house.

Categories

  1. Society > Culture > Architecture > Roofs
  2. Glossaries > Glossary of Buildings And Structures /
  3. Books about "Rafter" in Amazon.com

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  Short phrases about "Rafter"
  Originally created: September 16, 2007.
  Links checked: March 24, 2013.
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