![]() ![]() Shingle roofs typically have a life span of 15-30 years, while membrane roofs usually last 5-15 years. ![]() The most common roofing materials used in the United States include shingles, membrane roofing, and ceramic tile, all of which have different life spans. Using the aggregate area of these simple shapes can yield a more accurate roof area to be used with the Roofing Material Calculator. The Area Calculator can be used to calculate the area of a variety of simple shapes that together can comprise the area of the roof. The calculator cannot account for complex shapes based on a measurement of square footage alone. In cases where a roof has a complex shape, such as in the image to the right, measuring the dimensions and areas of each part of the roof to calculate the total area will result in a more accurate measurement of area. You should verify results for yourself, and all calculations should be checked independently.The calculated area is only an estimation. You should only use these calculators if you have enough knowledge to correctly assess the loads supported by members, the reasonableness of the program output, the overall performance of the structure, and the proposed design's suitability. Our calculators typically undergo weeks or months of beta testing and iteration and, finally, an audit by an independent chartered structural engineer before they are released.ĭisclaimer: All engineering software is based on approximations and standards which can be open to interpretation and can change. We also use our core calculation engines to recreate and compare our results with standard industry tables (such as the Blue Book, Orange Book and timber span tables). We use automated unit tests and end-to-end tests to simulate dozens or hundreds of example calculations covering a wide range of use-cases for each calculator. We also compare our results with other engineering software. These include examples from standards organisations, institutes, trade bodies, and textbooks. We benchmark the calculators against a wide range of sources. Yes, the calculators work in your browser on any internet-connected device, including PCs, Macs and tablets. Will the calculators work on my PC / Mac / Tablet? If you need to use a load that is not in the dropdown menu, select 'other' at the bottom of the list and enter the load details manually. What do I do if I need a load that is not in the dropdown list? UK section properties are provided by Tata Blue Book, European section properties are provided by ArcellorMittal Orange Book.Ĭan I use US standard units / metric units?Īll the calculators use metric units, except the US calculator, which uses US standard units.Ĭalculations can be downloaded or emailed as a PDF file. It also includes UB, UC and PFC sections. ![]() Yes, the Eurocode Steel Beam Calculator includes IPE sections and other standard European section sizes. Yes, just take out a monthly subscription and cancel as soon as you've finished.ĭo the steel calculators include European section sizes? I just need a single calculation, is it suitable for me? The calculators are designed for domestic projects. What types of project are the calculators suitable for? ![]()
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