Hurricane Tie Calculator
Estimate hurricane ties and approved connector fasteners from rafter or truss count, connectors per member, special connections, spare allowance and package sizes.
Default project preview
1 tie boxes
Base roof connections
38
Purchased ties
50
Extra purchased ties
8
Required connector fasteners
420
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Input and output guide
What each value means
The labels and units below are part of this calculator’s visible methodology. Replace every default with measurements or product data from the actual project.
Rafters or trusses receiving ties
Enter this project assumption in a unitless value. The current imperial default is 32. Minimum: 1.
Ties per framing member
Enter this project assumption in a unitless value. The current imperial default is 1. Minimum: 1. Maximum: 2.
Additional blocking or special connections
Enter this project assumption in a unitless value. The current imperial default is 6. Minimum: 0.
Spare-connector allowance
Enter this project assumption in %. The current imperial default is 8 %. Minimum: 0. Maximum: 50.
Hurricane ties per box
Enter this project assumption in a unitless value. The current imperial default is 50.
Price per tie box
Enter this project assumption in a unitless value. The current imperial default is 92. Minimum: 0.
Approved fasteners per tie
Enter this project assumption in a unitless value. The current imperial default is 10.
Connector fasteners per box
Enter this project assumption in a unitless value. The current imperial default is 500.
Price per fastener box
Enter this project assumption in a unitless value. The current imperial default is 48. Minimum: 0.
How to read the outputs
Base roof connections
32 framing members × 1 plus extras. Default preview: 38.
Purchased ties
50 per box. Default preview: 50.
Extra purchased ties
after spare allowance. Default preview: 8.
Required connector fasteners
10 per tie. Default preview: 420.
Fastener boxes
500 per box. Default preview: 1.
Connector material cost
tie and fastener boxes. Default preview: $140.00.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Base ties = framing members × ties per member + special connections. Add spare allowance, round to tie boxes, then calculate approved fasteners from the entered schedule.
BuildMeter Guides
Understand the measurements and assumptions
Use these visible reference guides before changing project inputs or planning allowances.
FAQ
Hurricane Tie Calculator questions
When are two ties used at one framing member?+
Some designs use paired connectors, but only when the selected product and connection detail permit it.
Can general-purpose screws be used?+
Use only fasteners approved for the exact connector. Published loads depend on the specified fastener type and installation.
Does this select the right hurricane tie?+
No. Loads, framing, support geometry, exposure and local requirements determine connector selection.