Not only does it have all the standard rafter tables but the irregular roof framing, marshal gross, 1984, 475 pages. Prices including delivery for roof cuts and rafter lengths by a. Used by carpenters union apprenticeship programs from hawaii to new york. Irwin rafter square reference guide complete instruction book. Then tilt the base of your saw to the same angle as the roof on which the bottom end of the rafter will rest. Use our online rafter length calculator to quickly compute the length of the shed roof rafter by entering the measurements of overhead, length of roof span, pitch or angle. Framing square rafter table guide how to figure roof rise. This rare pocketsized book comes hardbound with a cloth marker like a true bible.
Hancock 0731647033, 9780731647033 hancocks roof books, 19 an easy to read handy pocket guide to roof construction, measurements and details. I would recommend buying this book along with the roof framers bible as a set. Determining roof rafter length conversion factors for roof rafters roof rafter length cutting a rafter birdsmouth to convert rafter span to sloping distance. Billy hope this helps you construction master pro calculator example building is 30. Common rafter calculator rafter dimensions plumb cuts. An easy to read handy pocket guide to roof construction, measurements and details. If slope is 4 in 12 and rafter span is 126, then sloping distance 12.
For canted rafters, the valley sleeper layover bevel angle and roof sheathing angles define the rafter cuts for canted rafters. Download roof cuts and rafter lengths, alexander webster. Rise and run means that a 612 pitch roof has 6 of rise vertical for each foot of run horizontal. Plumbing connection magazine subscription tradestuff. Exact lengths of all rafters including all regular and irregular hips, valleys, commons, and jacks. Roof cuts and rafter lengths book, buy roof cuts and rafter lengths. Well known throughout the industry as the little red roofing book, it can be or should be found in every roofers toolbox. Hes proclaimed for years that the best method for finding the. On the framing square blade face, using the common rafter length per foot run line in the table, look along the blade under the inch number 18 we see 21. Use the diagrams on this page as a reference when inputting rise and run, and while interpreting the calculated results.
Also cuts and bevels for gable and cornice mouldings, accompanying each of the 48 pitches with illustrations. The total rise of hip and valley rafters is the same as that of common rafters. This 88page pocket size edition is in metric, updating all the old calculations, and it is a very easy. Become a faster, more accurate, and more efficient roof framer with the rafter book.
Cuts and bevels for common, hip, valley, jack and purlin rafters. A rafter that runs from a hip rafter to a valley rafter, perpendicular to the roof ridge dormer rafter. Jan 09, 2020 at this point, youve cut 1 roof rafter. A jack rafter is a shortened common rafter that may be framed to a hip rafter, a valley rafter, or both. Since the sum of the three angles in a gambrel roof. With this manual you arent restricted to rafter lengths and pitches listed in those rafter tables that roof cutters have struggled with for years. Hip or valley rafter for same roof to be marked with a square or bevel 6x161112 and 8144 inches, length of rafter measures from a to b 18 9 112 inches, as shown on fig.
Our roof rafter calculator tools are handy for calculating the number of rafters needed, rafter length calculator, lineal feet of rafter, board feed in ridge and subfacia, and the total board feet in the roof. Hip roof framing calculator with rafter angle cutting. Sep 22, 2016 and what about where the rafter rests on the outside walls top plate how to calculate that seat cut, aka birds mouth cut. At an angle of 16 the total fall of the rafter is 680. You put in the width and the pitch and this book will give you the full length of the rafter. Roof pitch calculator calculates pitch, rafter length.
Full lentgh roof framer is a book full of rafter cuts, sheating cuts,rafter lengths,info on irregular roofs, ect both the estimator and carpenter will find this book handy. The number of rafters needed will be determined by the length of your roof. How to layout and cut hip and valley roof rafters youtube. Rafter run outer wall this should be measured starting from the center of the roof span, and then extending to the very edge of the exterior wall. Lets figure the rafter length for an 18 in 12 roof. The most useful book ever if you want to cut a roof. With the tape measure hooked onto the top end, transfer your two rafter lengths onto the top edge of the timber. Shiften or swansons blue book richard birch and i are having a discussion on shiften. Jul 19, 2015 prices including delivery for roof cuts and rafter lengths by a.
Roof cuts and rafter lengths 10th edition 10th edition by hancock an easy to read handy pocket guide to roof construction, measurements and details. Use your roofing square set to the plumb cut to mark the plumb angles down from those points. With rafter depth of 200 and birdsmouth depth of 29 the rise from top of wall to top high end of rafter 744. The tail or eave overhang must be added to the rafter length. Connection of roof battens to timber rafters in light weight metal roof sheet construction. Lots of illustrations and easytofollow example problems. Jul 09, 2017 how to layout and cut hip and valley roof rafters. Obviously, when one has all the necessary rafter lengths written on the plans, the puzzle has been solved and it is time to arrange the rafter material on racks to mark layout for gang cutting. Jun 16, 2017 full lentgh roof framer is a book full of rafter cuts, sheating cuts, rafter lengths,info on irregular roofs, ect both the estimator and carpenter will find this book handy.
A rafter that sits on top of the main roof without cutting into the main roof. Roof cuts and rafter lengths by hancock boffins books. Length of rafter measures from a to b 5 6144 inches, as shown on fig. This is the rafter length from the top cut to the seat plumb mark. For example, this rafter would be used when remodeling or adding on to an existing structure.
Enter the value for the roof width outside to outside in feet, inches, and fraction, inches and fraction, or use the inches box to enter a value in decimals if that is your preference. Well known throughout the industry as the little red roofing book, it can be or should be. Invaluable to anyone who wants to cut a roof by hand and not use trusses. This useful book shows how to frame any type of roof in common use today, even if youve never framed a roof before. Well known throughout the industry as the little red roofing book, it can be or should be found in the back of every roofers ute. Hes proclaimed for years that the best method for finding the correct lengths for hip rafters and laying out the back bevel angles, hip rafter side cut angle, was in the swansons blue book that you get when you purchase their speedsquare. Roof rise this should be calculated from the base of the roof to the highest point of the roof gable the peak. Use the formula to determine rafter lengths and then mark your rafter joists for cutting. The miter box will be your friend for this type of project as it will hold the wood for you and even specify where and how to make your cuts. Sep 03, 20 shiften or swansons blue book richard birch and i are having a discussion on shiften. I have a hip roof with a 1212 pitch on the main side of the roof while the end is an 1812 pitch. Calculations for roof frames, roof cuts and rafter lengths.
This gives the top plumb cut, to fit against ridge. Lengths and cuts of rafters the first step is to lay out a roof plan on a board or sheet of drawing paper, to a scale of, say, 1 12 in. M easure the rafter length along top edge of rafter. How to measure roof rafters including the pitch and birds. Roof cuts and rafter lengths by hancock, 9780731647033, available at book depository with free delivery worldwide. Roof cuts and rafter lengths by hancocks roof books known in industry as the little red roofer or hancocks roofing book was published back in the days. Subtract what you are using as a ridge and you have your length perfect every time. Cuts are given with framing square layout and degree settings for cuts with skilsaws, and with degree settings for compound miter or radial arm saws. Depending on the size of your structure, you will need to cut several or many more. Books, images, historic newspapers, maps, archives and more.
All roof rafters should be identical, so follow the same steps to measure the plumb cut, tail cut, and birdsmouth cut. Nov 09, 2012 i have a hip roof with a 1212 pitch on the main side of the roof while the end is an 1812 pitch. Full demonstration of layout, cuts, and assembling. Rafter is a sloping beam usually wood that supports a pitched roof.
And what about where the rafter rests on the outside walls top plate how to calculate that seat cut, aka birds mouth cut. This useful book shows how to frame any type of roof in common use today, even if. The picture below shows the first rafter lengths in green which is from the ridge to the wall plate. It will help you with plumb and side cuts for hip and rafter, down and side purlin cuts and more. Print full scale paper templates cut and fold over wood to mark and cut angles. Visit the roof framing page for more information on cutting roof rafters, and visit the roof pitch calculator for. Instead, the author explains how to use an inexpensive handheld calculator to figure any common, hip, valley or jack rafter in seconds including rafters on irregular roofs and rafter pitches.
How do you figure the length and angles of the cuts on an uneven roof for the hip rafter reply. A series of tables giving the full length of all rafters for any span, for 48 different pitches. This calculator helps you make the rafters of the suitable sizes required for your roofing. Hip rafter shift offset, plumb line shift, dpshadow line, and roof averaging design are the other four techniques that need to be studiedlearned to graduate from the big fish in a little pond to compete in the. Using the 7 inch rise table and our 15 run, the common rafter length is 17 43. Thus, there are hip jack rafters and valley jack rafters.