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What else can I help you with?
How do you decide the common rafter length in a hipped roof?
use the 17" on your rafter square
Height of a 20' 4-12 pitch rafter?
3' 4"
What is better a roof truss or rafter?
They each have their place, but on the same style roof, trusses would be stronger.
How many squares of shingles do you need to cover 1900 ft roof?
One square covers 100 square feet, so to cover 1900 square feet of roof you would need 19 squares. However, you also need "starter shingles" and "hip and ridge" shingles, plus you need to have a few extras because of waste from cutting angles. Starter shingles go around the perimeter of the roof as a bottom layer for the first course of shingles. Hip and ridge shingles go, as you might expect, on the hips and ridges. In order to know for sure the exact quantity you would need for the entire roofing job you have to measure all of these areas.
How do you figure the hip on a hip roof?
A hip roof, or hipped roof, is a type of roof where all sides slope downwards to the walls, usually with a fairly gentle slope. A square hip roof is shaped like a pyramid. Hip roofs on rectangular houses will have two triangular sides and two trapezoidal ones. A hip roof on a rectangular plan has four faces.
What is a broken hip rafter?
A broken hip rafter refers to a structural failure in a roof system, specifically involving the rafter that supports the hip of a hip roof. Hip rafters are angled beams that run from the ridge of the roof to the corners, providing support and stability. When a hip rafter breaks, it can compromise the integrity of the roof, potentially leading to sagging or collapse. Repairing a broken hip rafter typically requires replacing the damaged rafter and ensuring proper support is restored to the roof structure.
What is a cripple Jack rafter?
A cripple jack rafter is a jack rafter which touches neither a ridge rafter or a top plate. Cripple jack rafters are often categorized as either valley cripple jack rafters or hip cripple jack rafter.
What is mean timber hip rafter?
A mean timber hip rafter is a structural member in a roof framework that extends from the ridge to the corner of the building, where two roof slopes meet. It supports the weight of the roof and helps to transfer loads down to the walls. The term "mean" typically refers to the average or typical dimensions used in construction, ensuring that the rafter is appropriately sized for stability and durability. In design, hip rafters are crucial for maintaining the integrity of hip roofs, which have slopes on all sides.
What is a jack rafter or called a cripple?
A Jack rafter is a rafter that has the pitch of the roof cut onto one end with a 54 degree angle this sort of rafter is one of several that fit onto a hip ridge. To cripple a piece of timber means to cut it partway through in order to straighten it if this is done to a wall timber it will need to be splinted to restore the strength of the stud
What is the last rafter on a building called?
The last rafter on a building is typically called the "ridge rafter." It runs along the peak of the roof and connects the tops of the sloping rafters, providing structural support and helping to define the roof's shape. The ridge rafter is crucial for maintaining the integrity of the roof framework.
What is the thickness of a ridgeboard compared to a common rafter?
Acommon rafter will normally be a 2 x 6 with a 2 x 8 ridge. Extreme pitches or larger rafters will require a larger ridge.
What size is the ridge board compared with the rafter?
The ridge board is typically the same dimension as the rafter or slightly smaller, depending on the design of the roof. It serves as a structural element at the peak of the roof, providing support for the upper ends of the rafters. In most cases, the ridge board is made from a 1-inch thick material, while the width may vary but often matches the rafter's width for a flush fit. This configuration helps to create a stable framework for the roof structure.
When laying out hip and valley rafters what is the run?
The run is on 17 not on 12 like you would use for a rafter.
Does ridge vent have to cover over hang?
Rake overhangs are not as critical to vent as are the rafter spaces above the living areas, but for the sake of appearance, the entire ridge is usually covered with venting.
No ridge board is needed in roof construction if the pitch is steep and the rafter are directly opposed?
It is true that no ridge board is needed if the pitch is steep and rafters are directly opposed. This is the only time a ridge board is not needed.
By shortening the rectus femoria what exercise will it perform?
knee extension and hip flexion
Instructions for swires roofing square?
The figures on the outer edge of the curve are degrees. Use these to set the angle/pitch of the roof. The figures on the inner edge of the curve are a ratio of the length of common rafter per foot or metre of run or span of roof. Take half the span of the roof in feet OR metres and multiply by the figure for the pitch of your roof this will give you the length of your rafter from birds mouth to the centre of the roof. Then make a deduction of half the thickness of the ridge board. at right angles to the bevel . The easiest way to use the bevels/angles from the square is to place the square on a piece of ply or board and mark all the bevels/angles onto the board and then use a sliding bevel/bevel square to apply the bevels/angles to the rafters and other members of the roof. No 1= Plumb & Seat cut for the Hip No 2=Plumb & Seatcut for Common Rafter No 3=Edge cut for the Hip (Mitre) No 4=Edge cut for Jack Rafter No 5=Side cut for Purlin No 4A=Edge cut for Purlin (Mitre) No 6 Lip cut to Purlin .This is the sloping cut which goes under the bottom edge of the Hip where the Purlin abutts to the Hip Rafter
