Roof cuts and rafter lengths book

Roof cuts and rafter lengths by hancock boffins books. Depending on the size of your structure, you will need to cut several or many more. 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. Used by carpenters union apprenticeship programs from hawaii to new york. Gives rafter runs to locate ridges and framing points. Download roof cuts and rafter lengths, alexander webster. 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. Roof pitch calculator calculates pitch, rafter length.

Use your roofing square set to the plumb cut to mark the plumb angles down from those points. And what about where the rafter rests on the outside walls top plate how to calculate that seat cut, aka birds mouth cut. Roof cuts and rafter lengths hancocks 10th edition is a very popular, best selling book. Not only does it have all the standard rafter tables but the irregular roof framing, marshal gross, 1984, 475 pages. Rafter span tables use these tables to determine lengths, sizes and spacing of rafters based on a variety of factors such as, species, load, grade, spacing and pitch. Prices including delivery for roof cuts and rafter lengths by a. Jul 19, 2015 prices including delivery for roof cuts and rafter lengths by a. Full demonstration of layout, cuts, and assembling. This rare pocketsized book comes hardbound with a cloth marker like a true bible. Shiften or swansons blue book richard birch and i are having a discussion on shiften. Sep 03, 20 shiften or swansons blue book richard birch and i are having a discussion on shiften.

The number of rafters needed will be determined by the length of your 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. 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. Connection of roof battens to timber rafters in light weight metal roof sheet construction. 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. If slope is 4 in 12 and rafter span is 126, then sloping distance 12. Roof cuts and rafter lengths by hancock, 9780731647033, available at book depository with free delivery worldwide. Roof cuts and rafter lengths book, buy roof cuts and rafter lengths.

Hip roof framing calculator with rafter angle cutting. 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. You put in the width and the pitch and this book will give you the full length of the rafter. Everyday low prices and free delivery on eligible orders. 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. With rafter depth of 200 and birdsmouth depth of 29 the rise from top of wall to top high end of rafter 744. 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. Also cuts and bevels for gable and cornice mouldings, accompanying each of the 48 pitches with illustrations. Roof cuts and rafter lengths 10th edition 10th edition by hancock an easy to read handy pocket guide to roof construction, measurements and details. Lots of illustrations and easytofollow example problems.

A rafter that runs from a hip rafter to a valley rafter, perpendicular to the roof ridge dormer rafter. Use the diagrams on this page as a reference when inputting rise and run, and while interpreting the calculated results. Subtract what you are using as a ridge and you have your length perfect every time. Then tilt the base of your saw to the same angle as the roof on which the bottom end of the rafter will rest. This calculator helps you make the rafters of the suitable sizes required for your roofing. With the tape measure hooked onto the top end, transfer your two rafter lengths onto the top edge of the timber. 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.

I would recommend buying this book along with the roof framers bible as a set. 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. The roof pitch calculator calculates slope, pitch, angle and rafter lengths, based on input of rise m and run r. The picture below shows the first rafter lengths in green which is from the ridge to the wall plate. A series of tables giving the full length of all rafters for any span, for 48 different pitches.

Well known throughout the industry as the little red roofing book, it can be or should be found in every roofers toolbox. 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. Roof rise this should be calculated from the base of the roof to the highest point of the roof gable the peak. 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. 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. Mark end plumb cut on the tail end of rafter using. Jan 09, 2020 at this point, youve cut 1 roof rafter. Length of rafter measures from a to b 5 6144 inches, as shown on fig. Exact lengths of all rafters including all regular and irregular hips, valleys, commons, and jacks. This 88page pocket size edition is in metric, updating all the old calculations, and it is a very easy. M easure the rafter length along top edge of rafter. It will help you with plumb and side cuts for hip and rafter, down and side purlin cuts and more. The most useful book ever if you want to cut a roof.

Well known throughout the industry as the little red roofing book, it can be or should be. A rafter that sits on top of the main roof without cutting into the main roof. Jul 09, 2017 how to layout and cut hip and valley roof rafters. I have a hip roof with a 1212 pitch on the main side of the roof while the end is an 1812 pitch. An easy to read handy pocket guide to roof construction, measurements and details.

Visit the roof framing page for more information on cutting roof rafters, and visit the roof pitch calculator for determining rafter lengths based on rise and run. 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. The total rise of hip and valley rafters is the same as that of common rafters. How to measure roof rafters including the pitch and birds. Use the formula to determine rafter lengths and then mark your rafter joists for cutting. Visit the roof framing page for more information on cutting roof rafters, and visit the roof pitch calculator for. For canted rafters, the valley sleeper layover bevel angle and roof sheathing angles define the rafter cuts for canted rafters. 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. Calculations for roof frames, roof cuts and rafter lengths. Hancock 0731647033, 9780731647033 hancocks roof books, 19 an easy to read handy pocket guide to roof construction, measurements and details. 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. Print full scale paper templates cut and fold over wood to mark and cut angles.

Become a faster, more accurate, and more efficient roof framer with the rafter book. This is the rafter length from the top cut to the seat plumb mark. Cuts and bevels for common, hip, valley, jack and purlin rafters. Billy hope this helps you construction master pro calculator example building is 30. Framing square rafter table guide how to figure roof rise. 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. How do you figure the length and angles of the cuts on an uneven roof for the hip rafter reply. A jack rafter is a shortened common rafter that may be framed to a hip rafter, a valley rafter, or both. Determining roof rafter length conversion factors for roof rafters roof rafter length cutting a rafter birdsmouth to convert rafter span to sloping distance. Add whatever length you want for a tail or eave to the rafter lengths given in the table in the back of the book. Hes proclaimed for years that the best method for finding the. Rise and run means that a 612 pitch roof has 6 of rise vertical for each foot of run horizontal. Lets figure the rafter length for an 18 in 12 roof.

Plumbing connection magazine subscription tradestuff. Rafter is a sloping beam usually wood that supports a pitched roof. Using the 7 inch rise table and our 15 run, the common rafter length is 17 43. Irwin rafter square reference guide complete instruction book. This useful book shows how to frame any type of roof in common use today, even if. 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. Books, images, historic newspapers, maps, archives and more. 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. 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. Thus, there are hip jack rafters and valley jack rafters. 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. For example, this rafter would be used when remodeling or adding on to an existing structure.