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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
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How old is a swires roofing square?
I bought my Swires Roofing square in 1964 from Mr Swires. I was building a bungalow in Littleton Chester when he turned up at the site and introduced himself and demonstrated the roofing square that he had invented. I was so impressed with it that I bought it, and I still have it and the book of instructions. Mr.Swires was 70 yrs. old when I met him and he was retired. He had worked as a Railway Engineer and his work was the design and setting out on site all the complicated main line, sidings and marshalling yards which was all geometry. He lived at Clotton near Chester which was near where I was working so he dropped in several times, I found him to be a fascinating character,every conversation with him was an education he was like a breath of fresh air. I paid £25 for the Roofing Square and although I never made good use of it later I kept it for its inerest value.
How many square feet in a square of roofing shingles?
A square of asphalt shingles, installed according to mfg instructions, covers 100 sq. ft.
How much does a square of roofing cover?
In roofing terminology, a "square" is 100 square feet; of 9.29 square meters.
In roofing what is the square foot measurement of a square?
1 roofing "square" = 100 square feet. 100 square feet = one square
When was Steve Swires born?
Steve Swires was born on February 18, 1951.
When did Steve Swires die?
Steve Swires died in 5 October 2006 of colon cancer.
What does weight per square mean?
In roofing, it is the weight of the roofing in pounds per 100 square feet of coverage.
What is a square of roofing?
A 10'x10' area is a square.
What is a square in roofing material?
If I recall from my roofing days, a square is 3 bundles of shingles. Those 3 bundles cover 100 of square feet.
What is a square of roofing shingles?
1 square of roofing shingles is 3 bundles of shingles equaling 63 shingles per square.
What is a square in roofing?
10ft. By 10ft.-100 square feet
How much does aluminum roofing weigh per square?
Per square what? (Metre? Foot?) You haven't fully asked the question. A "square", when referring to roofing and siding, is 100 square feet.
