Plan anchors by location, pattern, and allowances quickly. Track nuts, washers, boxes, and templates easily. Reduce shortages, simplify ordering, and keep crews moving smoothly.
Use standard and special groups to reflect typical and non-typical anchor patterns on site.
Sample scenario showing how location groups affect totals. Replace these values with your project data.
| Group | Locations | Bolts per location | Base bolts |
|---|---|---|---|
| Standard | 12 | 4 | 48 |
| Special | 2 | 6 | 12 |
| Base total | 60 | ||
Anchor bolts are rarely ordered as a single item. A practical order usually includes rods, nuts, washers, and packaging quantities that match site handling. This calculator converts location counts and bolt patterns into a procurement-ready total, reducing shortages and last‑minute substitutions that can delay steel, equipment, or façade installation.
Most projects contain repeating base plate layouts and a smaller set of exceptions. By splitting inputs into standard and special locations, you can model typical patterns (for speed) while still capturing heavy columns, skid frames, or edge conditions. This improves the reliability of the “base bolts” total before adding allowances.
Spares cover damage, missing hardware, field changes, and rework. A percentage allowance is easy to communicate to purchasing, while a fixed contingency lets you include a known extra quantity for critical phases. The rounding option helps you apply consistent rules, which matters when small totals are involved.
Templates or jigs may require additional bolts for mockups or set-out work. Pack size converts your total bolts into an estimated number of boxes, supporting storage planning and staged deliveries. The embedment total is a planning indicator that helps teams cross-check schedules, not a structural verification.
Use the sample below to validate your workflow before entering project quantities.
A standard location is any repeated anchor pattern you can count as a group, such as typical column base plates or repeated brackets. This keeps inputs fast and consistent across the site.
Use special locations for non-typical patterns, heavier equipment bases, edge conditions, or any anchor group that uses a different bolt count than the standard pattern.
Common ranges are 5–10% depending on handling risk, rework history, and schedule pressure. Increase spares when multiple trades share anchors or when deliveries are difficult to replace quickly.
Templates can consume extra bolts for mockups, set-out checks, or fabrication trials. Including them early avoids separate small orders that can cost more time than materials.
Boxes are estimated by dividing total bolts by the pack size and rounding up. This supports storage planning, staged deliveries, and quick verification against supplier packaging.
No. Total embedment is a planning metric only. Structural adequacy depends on design loads, concrete strength, edge distances, and governing codes, which must be checked separately.
Yes. After calculating, use the CSV or PDF buttons near the results. The download includes your inputs and outputs so procurement can place orders without retyping values.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.