When it comes to structural design, accuracy is everything. Whether you’re working on a residential build, a commercial structure, or even a renovation, timber joist sizing and spacing must meet safety standards while optimizing material use. That’s where a Timber Joist Design Spreadsheet becomes an invaluable tool.
The CivilWeb Timber Joist Design Spreadsheet can be purchased lower down this page for only £19.99. Or why not buy our best value bundle? Our Full Timber Design Spreadsheet Suite can be purchased at the bottom of this page for only £49.99. This suite includes all 11 of our timber design spreadsheets and represents an incredible saving of more than 75%.
What is a Timber Joist?
A timber joist is a timber beam, typically a number of small timber sections at close spacings which span the space between load bearing walls and support a small section of a floor, ceiling or roof. The load is safely transferred to the walls and the joists must be sized correctly to prevent excessive large deflections which are both unsightly and can damage the supported floors above. In extreme cases incorrectly sized timber joists can fail completely in bending or shear.
Why Choose Our Timber Joist Design Spreadsheet?
- Easy to Use – Simple inputs with automated outputs. No need to be a spreadsheet expert, it is all pre-built for you.
- Accurate Calculations – Built-in automatic formulas create calculations in accordance with BS EN 1995-1-1 or BS268-2. Checks include for bending, shear, bearing and deflection in accordance with the requirements of the standards.
- Save Time – Instantly generate joist sizes without manual number crunching or hand calculations. Optimise timber joist sizes at a glance using our unique joist sizing graphs in-built in the sheets.
- Professional Results – Ideal for engineers, architects, builders, home owners and students.
Who Is It For?
- Structural Engineers – Speed up design checks with accurate and reliable calculations. No need for load and sizing tables and manuals. Fully compatible with Eurocode and British Standard design methods.
- Builders & Contractors – Ensure joists are safe and efficient before construction.
- Students – Learn timber design with an easy-to-follow tool. Check hand calculations instantly and see exactly where any errors are occurring.
- DIY Home Designers – Plan projects with confidence. Check alternative joist sizings and spacings in minutes.
How Does the Spreadsheet Work?
Our Timber Joist Design Spreadsheet is designed to be as user friendly and as adaptable as possible. The spreadsheet can handle any joist span and any joist size, standard timber strength class or service class. The chosen timber joist can be analysed with permanent and imposed UDLs and imposed point loads, which the spreadsheet converts to design bending moments, shear forces and deflections.
The Timber Joist Design Spreadsheet completes the analysis instantly and shows a clear and simple pass or fail showing whether the timber joist is suitable for the loads chosen. Then the spreadsheet user can optimise the design by adjusting the joist spacing and the joist size until an acceptable and economical timber joist has been selected.
This process is made even simpler using our unique timber joist sizing tool. A graph within the spreadsheet shows exactly how the design calculations are affected by a change in the joist depth, allowing the spreadsheet user to optimise the joist depth without time consuming iterative rounds of calculations and adjustments.
Get Started Today
Take the stress out of timber design. Whether you’re working on a major project or a small renovation, this tool will give you clarity, accuracy, and confidence.
Buy the CivilWeb Timber Joist Design Spreadsheet now for only £19.99.
