Calculate the length of rafters based on the run and pitch using feet and inches. One sixteenth of an inch accuracy. Use the forms below to get a fast result for the length and the rise. The first row has three fields – feet, inch, and fraction. This is for the run. The run is the horizontal distance the rafter will travel. For a standard gable you start with the span and subtract the thickness of the ridge. For example: 2 x 10 ridge – subtract 1.5 inches from the span, then divide the result by two. This yields the run. For gable roofs, click here for the Common Rafter Calculator that expects the span and the ridge thickness along with the roof pitch. This model is best suited for lean to rafters, or any situation where the run is known. This
Author: David King
-
After Level – Remote Grading
Support for Our Leveling App
Welcome to the support page for our leveling app. We’re here to help you get the most out of your leveling experience. If you have any questions, encounter issues, or need assistance, please don’t hesitate to reach out to us. Here’s how you can get support:
Contact Information:
Email Support: Feel free to send us an email at [email protected] with your questions or concerns. We aim to respond to your inquiries as quickly as possible.
Frequently Asked Questions (FAQs):
Before contacting support, you may find answers to common questions in our FAQ section. We’ve compiled a list of frequently asked questions to assist you with common issues and queries. Visit our FAQ page to explore these resources.
In-App Help:
Our leveling app includes an in-app help feature. If you encounter difficulties while using the app, you can access our in-app help guide for step-by-step instructions and troubleshooting tips. Look for the “Help” or “Support” section within the app.
User Guides and Tutorials:
We’ve created user guides and tutorials to help you make the most of our leveling app. Whether you’re a beginner or an experienced user, you can find useful tips and tricks to enhance your leveling experience. Explore our User Guides to learn more.
Feedback and Suggestions:
Your feedback is essential to us. If you have suggestions for improving our leveling app or if you’ve encountered any issues, please let us know. We value your input, and it helps us continually enhance our app. Submit Feedback.
Stay Connected:
Stay up-to-date with the latest news, updates, and announcements related to our leveling app by following us on social media. Connect with us on Facebook and Twitter.
Thank you for choosing our leveling app. We’re committed to providing you with the best support and resources to ensure a smooth leveling experience. Your satisfaction is our priority, and we’re here to assist you at every step. -
Hip roof decking calculator
Calculate roof decking with incredible precision with this free app. Based on the knowledge of the roof pitch and the length of one known side.
Works with any pitch or combination of pitches on 4′ x 8′ sheets of plywood. You should have at least some experience with decking roofs before going any further. There are two distinct traditional methods.
The most basic is simply to lay the decking to hang over the hip and then pop a line on it according to its position on the hip. Then saw it as carefully as possible as this can be extremely risky. The sawdust generated will collect on your walking surface and can make traction virtually zero.
The other way is to measure the length for the top and measure the length for the bottom. There is always one side that can be readily measured, but the other side has to ne determined by a straightedge of some sort.
Install now:
Roof decking calculator
Open app
Click on Menu in the top left. Select Roof decking
Click on Roof decking towards the bottom. Active pitch
Enter the roof pitch for the side where the decking goes. Side pitch
Enter the roof pitch for the adjacent side. Most of the time, this is the same as the active pitch. Width
For sheets with a long point and a short point, enter 48, for triangle pieces see the example below. Known side
Enter the length for the long point or the short point, then click plus or minus respectively. Result
The result for the unknown side always in inches. Triangle pieces
Active pitch
Enter the roof pitch for the side where the decking goes. Side pitch
Enter the roof pitch for the adjacent side. Most of the time, this is the same as the active pitch. Width
Enter the length up the rafter, then click equals. Result
This is the length. -
Calculate the rafter run by the known rise
Use this free app to calculate the run for any rafter in feet and inches, or just inches. Based on any roof pitch and any known rise.
The run is the horizontal distance a rafter travels. Learn how to perform this necessary task with ease and precision.
Install now:
Calculate rafter run
Open app
Click on menu in the top left. Select Rafter (known rise)
Click on Rafter (known rise) the fourth one down. Rise
Enter the rise, then click equals. Pitch
Enter how many inches per foot the rafter rises. Rafter
Click equals one more time to cycle past this one. Run
This is the horizontal distance the rafter travels. -
How to calculate the rise for rafters
Calculate the rise for rafters with any run and any pitch using feet and inches, inches or just a decimal value with ease and precision for free.
It is often necessary to establish the the rise for a particular run and roof pitch. This is so important for ridge posts and knee walls. Build your skills with this technique so this task will become second nature.
Install now:
Rise of rafter
Open app
Click on menu in the top left. Select Lean to rafter
Click on Lean to rafter the third one down. Run
Enter the horizontal distance, then click equals. Pitch
Enter the roof pitch in inches per foot, then click equals. Rafter
Click equals one more time. Rise
This is the vertical distance. -
Calculate rafters with free app
Calculate the length of common rafters in feet, inches, and fractions – faster, easier, and more reliably than ever before.
Install now:
The three things you need are:
Roof width
This dimension is the distance from the outside of the wall to the outside of wall where the HAP stops. This could be either the outside of the wall plate, or the outside of the wall sheathing (wherever the birds mouth hooks). This measurement does not need to include the overhang as this is done separately.
Pitch
This value is easily found on the blueprints by finding whatever corresponding view relates to the rafters. This value is always represented in mid-air right above the roof plane with a half of rectangle where the horizontal value (Run) is 12″ and the number you are looking for is the vertical measurement (Rise). The larger the pitch, the steeper the roof.
Ridge thickness
Most situations will be simply inch and a half. With the advent of more advanced building materials such as laminated beams and more complex engineering such as three ply ridges, this is not always the case. The thicker the ridge, the shorter the rafter.
Open app
Click on the Menu button Select rafter
Click on rafter, the second one down. Roof width
Use feet and inches then click equals. Pitch
Enter a value for the inches per foot rise, then click equals. Ridge thickness
Enter a dimension in inches or just use a decimal value, then click equals. Results:
Rafter
From the long point at the top to the top of the HAP at the bottom, then click equals for more. Rise
The distance from the top of the HAP to the top of the ridge. Click equals for more. Run
The distance from the outside of the wall to the inside of the ridge. My Technique
Make sure you are accurate for the three criteria you need.
Use a framing square and a sharp pencil for the layout.
Make a rafter tail from the same lumber first.
Write on the tail the length for the rafter, the rise and the run.
There are fundamental basics you should be familiar with before you should attempt to tackle a set of rafters. If you are not comfortable with the challenge, then hire somebody.
Keep everything accurate and safe.
-
Determine the pitch of a rafter
Find the pitch of any bastard pitch rafter with incredible ease and accuracy with the free Builder Fraction Calculator app.
Learn how to determine the roof pitch equivalent for any known rise and known run with the workshop below. This way you can use a framing square to get more precise cuts on rafters and other framing components.
Install now:
Open app
Click on menu in the top left. Select Diagonal
Click on diagonal at the top. The Rise
Enter the rise and click equals. The Run
Enter the run and click equals. Results
The rafter pitch is 4 / 12. -
Roof pitch to degrees
Convert roof pitches, or any slope to degrees, faster and easier than ever before with the Builder Fraction Calculator free app.
It is useful to know how to convert slopes into degrees so you know what bevel to set your saw on for things like gable studs. Practice the workshop below to help establish a skillset where things like this will be second nature.
Install now:
Pitch to degrees
Open app
Click on the Menu button. Select Diagonal
Click on diagonal at the top. Enter Roof Pitch
Roof pitch or rise in inches per foot. Click equals. Enter Run
Enter 12 for roof slope run. Click equals. Results
26.6 is the degrees. -
Mulch Calculator – How much do I need?
Calculate how much mulch you need for any project with this free and easy calculator. Enter values for feet for the length and width, and then inches for the depth and the number of cubic yards and the number of 2 cubic feet bags will be generated.
Bagged Mulch
For smaller projects it is better to use mulch in bags from your local supplier. These bags most often come in 2 a cubic feet size. This calculator works by solving for the volume of a rectangular prism.
Often shapes are not not exactly rectangular. For such a simple matter as this, it is acceptable to just visualize the nearest sized rectangle for whatever shape you are dealing with. On more complicated scenarios, simply break the whole thing down into smaller rectangular prisms.
Cubic Yards
It is much more economical to buy mulch in bulk. Big truck loads are generally sold by the cubic yard. A cubic yards fills a volume 3′ x 3′ x 3′. Some companies have trucks that easily deliver 5 tons and more.
-
Concrete House Footings for 2018 Codes
Design concrete footings for residential houses according to the 2018 IRC even if its on solid rock.
Footing Basics
The footing transmits the loads from above to the soil. So when an aggregate such as gravel , and the soil beneath it is compromised, then it will fail. This is why the many concrete design variations are covered in detail in the 2018 IRC.
For a standard designed footing follow these steps
- Erect batter boards to ensure a proper lay out.
- Use a quality level such as an optical level (transit), or a laser level to dig the trenches.
- Dig the ditch with a backhoe equipped with a 24″ bucket.
- Make the depth 10″ and be sure the bottom of the ditch is below the frost line unless it is on solid rock.
- Use 1/2″ re bar sawed to 16″ for grade stakes every 6′ apart.
- Use two runs of 1/2″ re bar on top of cradles.
- If the slope of the site exceeds 8″, then use step downs to maximize efficiency.
Solid Rock
If the path of the footing is disrupted by solid rock, then there is a simple fix. Build forms to allow it to rest rest on top of the rock even if it is above the frost line. Check out this video to learn more. VIDEO
Unstable Ground
If the ground is shifting, or its soft, then the bad ground should be removed down to a level below the bad soil and replaced with a more stable solution. Driving piles down to bedrock or using extra large footings is just not economical. It is more practical to simply change out the soft ground for some harder stuff.