Form Ties and Bracing Count Calculator

Calculate ties and braces accurately for straight or stepped walls, anywhere today. Set horizontal and vertical spacing, panel height, and pour stages per wall. Account for openings, corner conditions, and tie capacity with safety factors included. See required braces by spacing, angle, and anchorage options instantly. Export CSV or PDF for field use offline.

Units: meters (m), square meters (m²), kilonewtons (kN)
Global Settings
Pick a preset or choose from brand catalog, or set custom.
Heads-up: The capacity check is illustrative only and not a substitute for project-specific design standards.
Walls / Segments
# Wall name L (m) H (m) Lift H (m) Openings (m²) Edge off H (m) Edge off V (m) Tie sH (m) Tie sV (m) Brace sB (m) End braces Stag cols Stag rows Notes
“Edge off H/V” removes ties near corners/edges. “Lift H” models staged pours by height.
Results
# Wall Grid cols Grid rows (per lift) Lifts Ties (raw) Ties removed Ties required Braces Max tie utilization Flags
TOTALS 0 0
Summary
Ties: 0
Braces: 0
“Max tie utilization” is evaluated per lift using pmax = γ·Hlift·φ. Staggering changes placement only; counts remain based on maximum centers.
Example Data
WallLHLift HOpeningsoffHoffVsHsVsBEndStagCStagR
Core A8.03.01.51.20.100.100.60.52.4YesYesNo
Core B5.42.700.00.050.050.50.452.4NoNoNo
Shear C12.54.01.32.00.100.100.60.63.0YesYesYes
Formula Used

Effective geometry with corner offsets: Leff = max(L − 2·offH, 0); Heff = max(H − 2·offV, 0).

Staged pours: If LiftH > 0, wall is split into lifts: n = ⌈H/LiftH⌉. Each lift i uses Hi = min(LiftH, H − (i−1)·LiftH).

Grid counts (per lift): Columns = ⌈Leff/sH⌉ + 1; Rows = ⌈Heff,i/sV⌉ + 1. (Staggering alters placement only in this planner.)

Ties: Ties(raw) = Columns × Σ Rowsi. Openings are distributed by height: Ai = Aopen·Hi/H; Ties(removed) = Σ round( Ai / (sH·sV) ). Ties(req) = max(Ties(raw) − Ties(removed), 0).

Bracing: Braces = ⌈L / sB⌉ + (end braces ? 1 : 0). Brace count shown per setup (re-used across lifts).

Per-lift check: pmax,i = γ · Hi · φ. Demand per tie = pmax,i · sH · sV. Utilizationi = (Demand · SafetyFactor)/Capacity. Reported value is max over lifts.

Generalized planning formulas; verify against manufacturer data and applicable standards before construction.

How to Use
  1. Choose a tie preset, pick from the catalog, or enter a custom capacity.
  2. Set safety factor, γ, and φ reduction factor for your placement conditions.
  3. For each wall, enter geometry, offsets, openings, spacings, and optional Lift H.
  4. Toggle staggering if you plan alternating rows/columns; counts remain on centers.
  5. Click Calculate to compute tie/brace totals and the per-lift capacity check.
  6. Export CSV or PDF for field records or QA submittals.
Offsets represent clear distances where ties are not placed at edges/corners.
FAQs

It approximates reduced lateral pressure due to rate of placement, mix temperature, and set. Use project-specific values where available.

Offsets shrink the effective length/height, reducing edge tie lines. They are applied before spacing-based counts.

This planner sums rows per lift, modeling ties needed across stages. Brace count is per setup and assumed reusable between lifts.

Staggering improves distribution but usually doesn’t change maximum-center counts. For layout-specific savings, model exact tie coordinates.

Open the catalog, pick a brand/model, and click “Use.” The capacity field updates and switches to custom.

For tall lifts or tight spacing, the reduced pressure may still exceed tie capacity. Reduce spacings, choose stronger ties, or shorten lift height.

Currently CSV/PDF export the results table and key parameters. Extend the script to serialize inputs if you need a complete data dump.

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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.