Loading verified Google profile...
Free Tool
Fence Post Concrete Calculator
Granite Bay installers typically set posts 24 to 36 inches deep to resist seasonal clay soil movement; expansive clay sites may need wider holes or additional bags. This tool estimates cubic volume per hole (π × radius² × depth) and converts to 60-pound ready-mix bags for your post count.
How this tool works
- Enter the number of fence posts you plan to set.
- Set hole diameter and depth—10 inches wide by 24 inches deep is a common residential default.
- Review total volume and 60-pound bag count before ordering concrete.
Assumptions & notes
- Calculations assume cylindrical post holes and 60-pound bags yielding roughly 0.45 cubic feet each.
- Granite Bay's expansive clay soil may require deeper or wider holes than this baseline estimate.
- Local code may require deeper footings for gate posts or taller fence—confirm before digging.
Frequently asked questions
How deep should fence posts be in Granite Bay?
Most residential posts are set 24 to 36 inches deep. Clay soil movement and heavier gates often call for deeper footings than a shallow, quick-set job.
Can I use fast-setting concrete?
Yes—fast-setting mixes are popular for post-setting. Bag yield is similar; follow the manufacturer label for water ratio and set time.
What if my soil is heavier clay than expected?
Expansive clay is common throughout Granite Bay. You may need a wider footing than this calculator's default—your installer can confirm on-site.
Google Reviews
Trusted across Northern California
A verified Google Business Profile with real customer feedback.
Loading verified Google profile...
Get a free estimate
Tell us about your Granite Bay fence project — we will give you a straight answer and a real quote.
Phone (916) 906-2254
Granite Bay, CA — Serving Granite Bay and nearby communities
- California contractor license #1089233
- Residential, commercial & agricultural fencing
- Warranty-backed workmanship — ask us for project details