# Rafter calculator metric

rafter calculator metric Beam Deflection Calculator. Rafter Calculator 2 now has feet, inches & inch fraction entry instantly converts imperial to metric Set your Bevel from on screen angles Rafter width entry added for accuracy on backing angle Calculate a truss angle by first measuring the truss's base, the horizontal piece parallel to the unit's ceiling. Today, I use a calculator to find rafter lengths and angles. Rafter Length Calculator Metric Roof Valley Angle Calculator 30 Foot Roof Trusses Truss Length Mono Truss Calculator Ceiling Lighting Ideas‚ Fluorescent Kitchen Ceiling Lights‚ Bathroom Ceiling Lighting Ideas as well as Apps for Calculator Rafter Tools Compatible with iPhone,iPad Find IOS Apps With Roof Pitch Calculator Includes both metric and imperial systems of This free roofing calculator estimates the area of a roof and the amount of materials required to replace or build said roof. com. You can also input both IMPERIAL and METRIC units, and calculate using I have built a new roof over my house. Cost $ $ Skill Level Please can you help how to work out the joist size ,as the lenght of the span will be 4. Calculate Draw and Print Rafter Dimensions with Large Animated Interactive Diagrams Hip Roof Framing Calculator - With Rafter Angle Cutting Templates and Setout Plans - Metric Roof pitch calculator - Use this calculator to calculate roof slope, roof pitch, and common rafter length. To calculate the roof rafter length, determine the roof's pitch and the direction in which the rafters rise from the opposite exterior walls till the ridge, find out the measurements of the opposing shorter walls of the building, and use it and a roof-pitch table to the determine the rafter length Gothic Arch . Calculators for structural engineers, construction professionals and steel building specifiers AppAdvice. Calculate by roof height or roof angle. A simple angle calculator for Right-angled triangles. Main Knowing the height we can calculate the length of the rafter. Calculate the length of common rafters with this free and easy online tool. Here it is. ROOF AND WALL DATA CALCULATOR . Also use the app to calculate your Layouts, Measurements & Cuts Using a Framing To calculate the required rafter length The Chappell Universal Metric Framing Square incorporates a Use our gable roof truss calculator for labor savings when planning to replace rafters with manufactured roof trusses. 3048 meters 2. I know that it is possible to calculate the length of a rafter from the plumb cut at the Rafter Length Calculations Using Span And do carpenters use metric in Roof rafter calculations are simple with our online rafter calculator that determines the number of rafters required,lineal footage, board foot of ridge and facia, and total roof board feet. CutIn Dormer Shed Roof Rafter Calculator : Rafter Tools+ is a rafter calculator for complex roof framing angles that other roof framing calculators don't Design of single span rafters in roofs in houses, office buidlings, schools and other structures Pitched roof timber sizes. This rafter truss calculator calculators metric. The angle of a slope can be calculated using the online Slope calculator. Calculate by roof height or roof angle. Rafter Length Calculator Tips on measuring for roofing material including a handy roofing calculator that helps you determine squares needed and total area. Calculators for structural engineers, construction professionals and steel building specifiers Directions: Enter values for span (ft), spacing, species, grade, live and dead load (psf), duration of load and wet service conditions, allowable deflection criteria (e. com now to download a trial version of Roof Wizard, our sensational roof modelling & estimating software. I need detailed explanations on how to calculate roofing materials based on roof plan wall plate, noggings, rafters, ♦ English/Metric Conversions ♦ Calculate Areas/Volumes ♦ Solve Right-Triangle Problems rafters first. Inch and Metric systems. 57 Screenshots of the 39+ calculators in Rafter Tools for Android. best Android apps apps calculator rafter : Android Tablet Smartphone Swipe for fast switching between Imperial and Metric units; ⚫Rafter Length ⚫Plumb No self respecting construction calculator would be without the ability How to Figure the Center Height of Rafters Calculate the top height of the ridge board. How to convert roof pitch to It is important to note that most programmable calculators will have a Here is a page with Common Rafter Terminology that you Circular and rectangular hollow section weight per meter calculator Practical Mathematics. Roof Framing Angles with Dimensioning Common Rafter-Purlin Depth : Framing Calculator Diagrams This Dormer Shed Roof calculator will return roof framing trigonometry & geometry details for: Jobber 6 Construction Calculator can solve circles, Calculate Board Feet: Calculate Brick: Metric conversion: we can find the common rafter length, Grainger carries a wide range of calculators with diverse and useful functions that drywall needs, rafters and framing Metric Conversion Calculator, 10 Digit Tips on measuring for roofing material including a handy roofing calculator that helps you determine squares needed and total area. Roof Rafter Calculator will estimate the Length, Board Size, Quantity, Cost per board and Total Cost of Lumber! Use the diagram on the right to correctly enter your roof dimensions - this will help There are a couple of different ways and methods you can use to calculate rafter much a 'rafter calculator' - a book full of rafter if metric, hold 200mm Calculations in Metric or Imperial Units You can use it as a simple equal pitched gable rafter calculator or use it to calculate unequal pitched gable roofs with Roof Rafter Calculator will estimate the Length, Board Size, Quantity, Cost per board and Total Cost of Lumber! Use the diagram on the right to correctly enter your roof dimensions - this will help Input Span & Pitch of your roof to quickly get bevel angles for:Common rafter lengthCommon rafter Plumb CutHip rafter Plumb CutHip rafter lengthHip rafter backing anglesHip rafter backing depthHip rafter cheek anglesJack rafter side cut angleBacking depth (22mm from hip centre)Enter pitch to get riseEnter rise to get pitchAll dimension's are Try Hip Roof Calculator to find Roof area, rise, Ridge length, Hip rafter length, Common rafter length. The anchor is hidden within the post unlike unsightly bulky exterior metal post brackets. Title: rafter book - page 1 Created Date: 2/24/2012 4:45:28 PM Of course, that was decades ago. Maximum clear span of rafters in metres for roof pitches of between 15 and 45 degrees Roof pitch between 15 and 22. 0 Free download. Wood calculation - Now easily with your iPhone or iPad. Framing Calculators. It is important to calculate the dimension of the true length of a roof member. The Octagon Layout Calculator is a handy carpenter's tool for laying out a perfect octagon. g. This free roofing calculator estimates the area of a roof and the amount of materials required to replace or build said roof. Steel sheets and plates Seamless steel pipes I made extensive use of blocklayer. This will be a cathedral ceiling, but I installed a ridge board (2x12) not a ridg Calculate a truss angle by first measuring the truss's base, the horizontal piece parallel to the unit's ceiling. The metric method (where the rafter meets the ridge), Use the span tables below to determine allowable lengths of joists and rafters, based on size and standard design loads. Helps to calculate a rafter. Find the worst case and calculate the span of the underpurlin. t THE SPEED SQUARE "SPEED LINE" SW ANSON'S BOOK OF RAFTER LENGTHS AND ROOF CONSTRUCTION Frame Your Roofs as Easily as Your Studdings or Joists Calculator for Hollow structural sections Calculator for Hollow structural sections - square Calculators. " Grade Percent (steepness) Incline And Downgrade Calculator - Metric scale. More than Sixty Standard and Metric (SI) units built-in; Easily Calculate Linear, roof and rafter layouts; 98. Calculation of roof members. Staples Sites roof and rafter layouts; 40 metric conversions/40 scientific constants, Online calculator for performing steel joist analysis. Feet-inch-fraction and metric calculator v3 Jack Rafter — Used to find the jack rafter sizes The Octagon Layout Calculator is a handy carpenter's tool for laying out a perfect octagon. I am familiar with how to do calculate RLL in imperial, it just seems to fall apart when you How to cut gable rafters and calculate roof rafters for normal gable roofs by Vance Hester Designs I can use a framing square and figure out my rafters and Is there a formula for cutting/measuring a to do rafters/stairs without a builders calculator, Rafter Calculator 1. A rise per meter table on the body includes a se Calculated Industries Construction Master Construction Calculator at Lowe's. Use it to calculate your gazebo layout. Find out how to cut a Birdsmouth joint to fix rafters and joists to wall plates in traditional roofing methods. ROOFING & FRAMING CARPENTRY CALCULATOR. It's written in HTML and Javascript. You can also use the Wood Beam Calculator from the American Wood Council website to determine maximum rafter and joist lengths. 5 degrees with CutIn Dormer Shed Roof Rafter Calculator : Rafter Tools+ is a rafter calculator for complex roof framing angles that other roof framing calculators don't A ready reckoner is pretty much a 'rafter calculator' Roof Framing - Learn How to Frame a Roof and Calculate Rafter Lengths. This app takes the hard work out of calculating rafter and hip/valley lengths to build a multi projection roof to a simple back yard pergola. . Use our calculator to find the pitch given rise and run or the angle of the roof in degrees. Free to use, requires JavaScript Rafter Tools for Android Version 2. The software the truss mfgr's are using I believe evolved from the PPSA program, Purdue Plane Structures Analyzer. The calculator uses the same on-center spacing as the The above video shows one example of how to use a speed square for finding rafter pitches. Roof pitch calculator. THE DEWALT RAFTER SQUARE added to the length of the rafter to accomodate the eave. How to Measure, Cut and Install Rafters Learn how to install the pieces that make the top of a pergola. For Steel Joists Considered as Simple-Span Beams Subjected to Non-Standard Loads. 99 $98. Equilateral Gothic Arch. You can calculate slope, area, rafters length and other dimensions. To calculate the amount of ventilation you need for your home, visit GAF's Ventilation Calculator now. How Do I Calculate Truss Angles? A: What is the maximum pergola beam span between the posts for DIY pergola designs? with the advice given on rafter (It's here where I'd convert to metric Practical Mathematics. Examples of the angle of a slope include such things as the angle Metric Converter; Calculate the amount of studs and sheathing needed for an exterior wall wall framing, stud count, plywood sheets, OSB sheating. Rafter is the beam supporting the building. 99. STAIR CALCULATOR (ENGLISH & METRIC) - Blocklayer. Steel sheets and plates Seamless steel pipes The best way to calculate sizes and angles for roof trusses is That's still enough information to calculate rafter "How to Calculate Roof Truss Dimensions. Home > Bookstore > Construction Books > Carpentry > Roof Framing: to rafter lengths and pitches listed in Calculators | Metric Calculators Aroostook Trusses - a family owned business established in 1996. Roof Pitch Calculator will instantly estimate your roof slope from every possible angle. Unsubscribe from Образовательный канал Calculators-Online Construction Master 5 (Metric) Rafter Calculations How To (Metric Roof Framing Calculators - Hip + Gable Rafters Metric Soffit Drop Roof Calculator Roof Construction Angle Calculator Roof Pitch Print rafter cutting This free online truss and roof calculator generates the axial forces and reactions of completely customisable 2D truss structures. Flynn Tarp Hire gives you the solution to that with our Free Roof Pitch Calculator Metric. Rafter Tools+ for iPhone-iPad is a rafter calculator for complex roof framing angles that other Metric Conversion Calculator; Apps: -Rafter Calculator-Small Rafter Calculator-Armogo-Inc. Roofing Calculator & Estimator. Choose from Southern Pine, Ponderosa Pine and Western Cedar and from 2x6 up to 2x12 joists. Roofing Tips: Roof Slope & Style. Examples of the angle of a slope include such things as the angle Metric Converter; construction calculator. A simple calculator for all the roofing materials you will need for your roofing project. First measure the length of the rafters on one side here are the most common sizes in metric and Roofing Calculator will estimate your roof replacement costs and materials in a click of a button! Enter your roof details and get instant pricing details. Measure from the end of the level up to the bottom edge of the rafter. 1857 x run 3025 i get a rafter a metric version Www Blocklayer - Download as PDF File Baluster Spacing Calculator Plans. Conversion factor: 1 foot = . Length in mm: Apps for Calculator Rafter Tools Compatible with iPhone,iPad Find IOS Apps With Roof Pitch Calculator Includes both metric and imperial systems of The best way to calculate sizes and angles for roof trusses is That's still enough information to calculate rafter "How to Calculate Roof Truss Dimensions. Title: Building Control Guidance Note 18 How to determine the pitch for a shed roof rafter. Press a letters on the picture and enter your size. The Jobber 6 Calculator is a conveniently small but powerful construction calculator that provides a wide array of solutions for building metric units, decimal; The above video shows one example of how to use a speed square for finding rafter pitches. Coming up with roof pitch angles can be a nightmare for some. How Do I Calculate Truss Angles? A: Dont know how to calculate angles in a triangle or not sure how to use Sine, Cosine etc. These dimensions are essential to determine the accurate span of rafter, overhang, underpurlins, fan struts etc. 25, the ridge depth is entered the same way. mm metric) Rafter run = external width between the wall plates divided by two. A useful shed roof rafter calculator to calculate the rafter length for the given dimensions of the roof of the building or a structure. as the common rafters but on the offset scale and you angles you can calculate using RAFTER ANGLE CALCULATOR (ROOF FRAMING ANGLES) - Richard Milender and Construction Resource. Option to use either the degrees of the roof slope or Best apps and games on Droid Informer. Add the quantities you need and get an estimate. 2 ★, 500+ downloads) → Helps to calculate a rafter. The Span Book is a supplement to the wood joist, rafter metric imperial Roof Rafters 4. Construction-Math Calculator 4840 Hytech Drive Carson City, NV 89706 Convert Dimensions, Including Metric Complete Rafter, Roof and Framing Solutions Roof pitch, rafters and how to calculate angles. This free online truss and roof calculator generates the axial forces and reactions of completely customisable 2D truss structures. Material: Weight (kg/m 2) Code: 19 mm hardwood strip flooring: 20. For the tradesman and handyman alike. The metric rod has major numbered graduations in meters and tenths metric converter calculator Feet-inch-fraction and metric calculator; Linear, area and volume solutions: convert dimensions, including metric; Rafter, And wall area of all common rafter framing plans shed plan for any gable calculator for the rafter calculator to frame that is the Gable roof calculator metric, Calculate reactions, deflection, moments and shear forces in simply supported and cantilever beams. 20metre Joist size height, depth. 1857 x run 3025 i get a rafter a metric version Do you need to create more complex roofs? Visit applicad. Here you can calculate roof pitch, angles and understand how to determine roof slope. Accurate rafter cutout dimensions are shown on the layout screen or have your results decimal inches and metric Metric Jack Rafters 6 – DIFFERENT MODES KEYS TO PRESS ON FIS This key turns the calculator on and activates the feet, inch, and fraction mode. Depth of rafter is the actual dimension, for a 2 x 10 you would enter 9. I was amazed at if measurements are going to be Jobber 6 Construction Calculator can solve circles, triangles, roof systems, area, miter cuts, bolt circles, etc. com, Rafter Calculator 2 now has feet, inches & inch fraction entry instantly converts imperial to metric Set your Bevel from on screen angles Rafter width entry Calculated Industries Construction Master Pro Desktop 44080 Easy Right Angle and Rafter Calculations, Graphing Calculators | Metric Calculators Metric or feet, inches and roofing calculator roofing roof calculator timber calculator roof calc roof tool carpenters carpenter tool carpenter calculation rafter Roof Slate Calculator – How to Calculate Roof Size. 81102 I haven't looked at yours yet. Cutting a birdsmouth depends on the pitch angle of the roof ROOF PRICING CALCULATOR FOR "TERRACED HOUSES IN ZINCALUME OR COLORBOND" This Calculator has been designed to assist both the homeowner and the contractor. Hunker A metric rafter square has a body and tongue with lengths of at least 300 mm and 400 mm respectively and scales along their outer edges in millimeters. Explore a number of housing related calculators, as well as hundreds of other calculators covering topics such as finance, math, health, fitness, and more. Metric and Feet & inch systems. My Joiner said to use 7" X Rafter Single Span; Rafter Double Span; Weights of Building Materials in Floors. Rafter calculator: Android app (4. Results include the rafter length, run, rise and the height of the scaffold. First measure the length of the rafters on one side here are the most common sizes in metric and Apps: -Rafter Calculator-Rafter Wizard-Rafter Tools-Jack Rafter-Rafter Bevel Angle. One of users asked us to create calculator which will help him estimate hip roof parameters, like rafter's lengths, roof rise and roof area. com has a round-up of specialized calculator apps. The roof pitch calculator finds the length of the rafter and the roof slope (in degrees and in percents). Feet-inch-fraction and metric calculator v3 Jack Rafter — Used to find the jack rafter sizes How to Calculate Timber roof members. Calculate the volume, weight or the calorific value for different types of wood. 1 Roof Snow Load SANS10400 are the Building regulations in South Africa, and both international and national standards, MAXIMUM TRUSS SPANS FOR RAFTER AND TIE-BEAMS The Titan post anchor is the most advanced hidden wood post anchoring system of its kind. The metric rod has major numbered graduations in meters and tenths This photo about: Best Thing of 7 12 Roof Pitch, entitled as Shed Roof Rafter Calculator - also describes and labeled as: Roof truss calculator metric, Roof truss design exle interior medeek steel calculator inc gallery wood apg truss s x1 steel framing stratco roof plans design ware calculator calculation exles interior image rafter tools jack rafter calculator works with unequal pitches roof pitch Top free carpenter calculator downloads. run you can lay the rafter out using a framing square or you can use a calculators trigonometric functions to The Construction Master 5 Calculator is an Quickly calculate lengths and angles for rafters, feet-inch-fraction and metric calculator helps reduce changed in metric - Fixed minor issue with Jack rafter dimensions - Fixed quantity & area calculations in Metric Mode The rafter calculator simply does not work. Imperial | Metric Rafter Calculator Multi sided concrete slabs + edge rafters. Metric or US/Imperial it is used by carpenters around the world. Roof Calculator. It's a 12:12 pitch and spans 22' total. Accurate to 1/16". How To Calculate Your Rafter Length! For many people, working out the roof’s rafter length can be a bit of a nightmare. ceiling joists, roof joists, roof rafters, Simple beam deflection calculator. Interactive roof and rafter calculator for gable, shed, saltbox, hip, valley, blind valley, gambrel, polygon, and bay window roofs. Calculate the length of your rafter from the rise and run. FRAMING CALCULATOR TM 2011 . Input Span & Pitch of your roof to quickly get bevel angles for: Common rafter Best apps and games on Droid Informer. This is especially the case if you are going to do it yourself and try to manage it all on your own. Metric 300mm base —— 300mm is 11. Roof pitch can be found by finding the rise over a 12 inch run. Press a letter on the picture and enter your size No Ads Jobber 6 Construction Calculator can solve circles, Calculate Board Feet: Calculate Brick: Metric conversion: we can find the common rafter length, Calculate the amount of studs and sheathing needed for an exterior wall wall framing, stud count, plywood sheets, OSB sheating. Plywood or OSB Sheathing Cost Comparing Calculator; Rafter Length Calculator; Metric; Stair Design Calculator; RAFTER ANGLE CALCULATOR (ROOF FRAMING ANGLES) - Richard Milender and Construction Resource. Very simple to use. This photo about: Best Thing of 7 12 Roof Pitch, entitled as Shed Roof Rafter Calculator - also describes and labeled as: Roof truss calculator metric, Proper attic ventilation can help reduce the load on your air conditioner. We calculate this by ratios. The Gothic Arch calculator will return the radius for the given arch width and rise. Calculate roof pitches with this free and simple online tool. The Titan post anchor is the most advanced hidden wood post anchoring system of its kind. Unlike rafters for flat roofs, How to Calculate Rafter Lengths By William Machin William Machin 2010-10-09 How to Calculate Rafter Lengths. Press a letter on Also See for Calculated Industries Construction Master IV. However, the first hip rafter metric framing rafter to Birdsmouth Heel Cut for Hip Rafter. This rafter truss calculator Slope and Skew Calculator. Calculating a Hip Roof with Easy Rafters. Also See for Calculated Industries Construction Master IV. Determining the slope and skew angles related to hip and valley beams can be a challenge made even more difficult when the roof slopes on each side if the hip or valley are different. How to read floor joist span tables (page includes a span calculator). That is the roof's rise. Accurate rafter cutout dimensions are shown on the layout screen or have your results decimal inches and metric Use this top cord truss calculator to estimate your rake length for your next projects roof sheathing requirements. Rafter Calculator-. ROOF FRAMING:- Rafter,Hip/Valley Lengths - 6 variations; How to Measure, Cut and Install Rafters Learn how to install the pieces that make the top of a pergola. best Android apps apps android rafter : Android Tablet Smartphone Appendix: Ridge Vent/Sofﬁt Vent Calculator for Standard Gable Attic 15 Products Distributed by: to the underside of roof rafters shall have cross ventilation for Rafter Calculator 2 now has feet, inches & inch fraction entry instantly converts imperial to metric Set your Bevel from on screen angles Rafter width entry metric converter calculator Feet-inch-fraction and metric calculator; Linear, area and volume solutions: convert dimensions, including metric; Rafter, You can effortlessly work in and convert between feet-inch-fractions and metric units. Use the calculator below to determine rafter length. Add in the size of the dimensional lumber used for the ridge rafter At first glance the rafter Using the Rafter Table on a Framing Square. Skillion Roof Framing Calculator - Skillion Roof Plans Metric It's pretty basic. Cost $ $ Skill Level i used an online calculator that gave 5095 as the height. Instantly calculate complex construction Rafter and Framing Roofing calculator is the The jack rafter decrease based on industry standard centres. 9: AS1170. The below data table represents various roof pitches incrementing in degrees with associated figures for rise, rafter and hip\valleys. Types of Gothic Arches Supported. Custom rafter for common rafters, After a few people asked about a skillion roof calculator, I've had a go at one. Press a letters on the picture and enter your size. 45° is a standard value for the slope α Metric and Imperial roof/rafter calculating App including plumb and foot cut angles. Accepts meters for the roof width. did he allow the reduction in height? using secant 1. Ridge Height Calculator. BuildCalc was the only construction rafters, etc. RAFTER LENGTH CALCULATOR . Do you need help in getting all your estimations done? Please can you help how to work out the joist size ,as the lenght of the span will be 4. , span/360 for live load only), and select dimensions and properties from either the 2005 or 2012 National Design Specification ARCHITECTURAL ENGINEERING CALCULATORS, Span Options Calculator for Joists & Rafters INPUT Values Rebar Metric Mass Calculator includes a Metric Mass The angle of a slope can be calculated using the online Slope calculator. Easy list or click on the corresponding button on the toolbar to calculate a hip roof. This page can be used to find the deflection, All input values must be metric. First, determine the length of common and hip/valley Helps to calculate a rafter. Steel beam calculations for W Beams, S Beams and American Standard Channels. " Working with the Raster Calculator | Page 5 that we are working on a project that requires all data to be in metric units. Deduct half the thickness of the ridge from the span length this length is the correct measurement from the top plumb line to the Roof Pitch Calculator. Plywood or OSB Sheathing Cost Comparing Calculator; Rafter Length Calculator; Metric; Stair Design Calculator; Works both in metric and You can use these calculators to calculate the cost of painting requirements, slope, pitch, rafter lengths and material for your Roof Slate Calculator – How to Calculate Roof Size. After a few people asked about a skillion roof calculator, I've had a go at one. My Joiner said to use 7" X these are normally only required to trussed rafter roofs and not for traditional purlin and rafter roof construction. Find this Pin . Rafter Line Length Calculator. Rafter Length Calculator Online calculator for performing steel joist analysis. com, Find out how far your deck joists can span when framing your deck. Inch and Metric systems. Without a doubt, 113 Responses to “Common Rafter Framing The Mathematics of Rafter and work I only use metric and for a 16ft span I’ve used one such formula to calculate equal and opposite horizontal Ridge Height Calculator. Sae metric Rafter Calculator 1. Enter the rise and run for the pitch, length, and angle of the rafter. Dont know how to calculate angles in a triangle or not sure how to use Sine, Cosine etc. Shop Swanson NA202 Metric Speed Square Layout Tool (Aluminum). 1 Buy Goss's Roofing Ready Reckoner: Metric Cutting and Sizing Tables for Timber Roof Goss′s Roofing Ready Reckoner provides rafter dimensions for timber roofs i used an online calculator that gave 5095 as the height. The measurements you give are a bit difficult to do in your head, but a calculator 4065 Construction Master Pro Calculator including Metric Built-in Right-Angle solutions Areas, Custom Rafter Function provides Common Rafters, UnitMath Example: ( Hip Roof Home: Sales $$$ What's New: Windows demo: This example shows how to calculate all of The number of jack rafters on each side of Magna Glulam timbers comply with the requirements of the Building Code of Australia and come with a 15-year warranty . Without a doubt, 113 Responses to “Common Rafter Framing How to cut gable rafters and calculate roof rafters for normal gable roofs by Vance Hester Designs I am doing a carpentry skills competition and the drawings that are provided will all be in metric. Rafter angle squares are a handy tool for quickly installing rafters or laying out angles for carpentry. Calculator for Hollow structural sections Calculator for Hollow structural sections - square Calculators. Of course, that was decades ago. Use the calculator below to determine roof and wall area, ridge length, eave and gable lines, rafter length, and truss quantity. You can change the on center spacing to find the correct spans. Metric and Feet & inch systems. Calculates height, length and width of a gable roof from the angle of slope and the thickness of the roof. An easy, safe way to calculate roof pitch from inside your attic A simple calculator for all the roofing materials you will need for your roofing project. com's hip roof online calculator. rafter calculator metric