Flexural Strengthening Shear Strengthening Slab Strengthening Column Confinement Plastic Hinge (Seismic) RC Jacketing Tabulation (Batch Assessment) Midas Upload (CFRP Flexure)

FRP Flexural Strengthening
ACI 440.2R-17 Chapter 10

Beam Information

Existing Beam Properties

FRP Properties

Picking a product fills in the material properties below. Editing any of them switches back to Custom.

Concrete

Steel

FRP Material

Loadings

FRP Shear Strengthening
ACI 440.2R-17 Chapter 11

Beam Information

Picking a product fills in the material properties below. Editing any of them switches back to Custom.

FRP Wrap Properties

Section Properties

Existing Shear Capacities

FRP Slab Strengthening
ACI 440.2R-17 Chapter 10 — one-way slab, unit strip

Slab Information

Existing Slab Properties

Span & Support (deflection check)

FRP Properties

Picking a product fills in tf, Ef, ffu* and εfu* below. Editing any of those switches back to Custom.

Concrete

Steel

FRP Material

Loadings (per design strip)

FRP Column Confinement
ACI 440.2R-17 Chapter 12 — Lam & Teng (2003) confined concrete model

Column Information

Section Geometry

Longitudinal Steel

Materials

FRP Jacket

Picking a product fills in the material properties below. Editing any of them switches back to Custom.

Demands

FRP Plastic Hinge Confinement
ACI 440.2R-17 §13.3 — seismic strengthening (ASCE/SEI 41 strain limits)

Column Information

Section Geometry

Longitudinal Steel

Materials

FRP Jacket

Picking a product fills in the material properties below. Editing any of them switches back to Custom.

Seismic Demand & M-φ Inputs

cy,frp and cu,frp are taken from a separate moment-curvature analysis (per ACI 440 Example 16.10, Fig. 16.10b).

RC Column Jacketing
ACI 562-25 • ACI 318-25M • ASCE 41-17 — seismic retrofit

The non-FRP route. ACI 440.2R-17 Eq. (9.2) does not apply to a jacket — a jacket is new structure, not a bonded overlay. What replaces it is the ACI 562-25 R9.4.1 load-history rule below.

Column Information

Existing Column

Jacket

Jacket Hoops

Interface & Dowels

Construction Sequence

ACI 562-25 R9.4.1: an unshored jacket resists only the loads applied after it is cast. Unshored, the existing section alone must carry the pre-existing axial load.

Demands

Batch Assessment of Existing Beams
ACI 440.2R-17 / ACI 318M-14 — flags beams whose factored demand exceeds φMn or φVn (D/C > 1.0)

Per-row f'c / fy in the grid override these defaults. φ per ACI 318M-14 § 21.2 (flex 0.65–0.90, shear 0.75).
Flexure (Existing) Shear (Existing) Flexure (FRP) Shear (FRP)
Tip: paste from Excel directly into the grid (Ctrl+V).

Inputs

Flexural Evaluation Results

No results yet — click Compute Flexure.
CFRP System — Flexural Strengthening (ACI 440.2R-17 Ch. 10)
Per-beam MDL / MLL in kN-m. Mu = 1.2 MDL + 1.6 MLL.

Inputs

Flexural Evaluation Results — Existing & CFRP-Strengthened

No results yet — click Compute Flexure (FRP).
CFRP System — Shear Strengthening (ACI 440.2R-17 Ch. 11)
Per-beam VDL / VLL in kN. Vu = 1.2 VDL + 1.6 VLL.

Inputs

Shear Evaluation Results — Existing & CFRP-Strengthened

No results yet — click Compute Shear (FRP).
Tip: paste from Excel directly into the grid (Ctrl+V).

Inputs

Shear Evaluation Results

No results yet — click Compute Shear.

Midas Beam Design — CFRP Flexure & Shear Strengthening
Pull beam forces from a Midas RC beam-design Excel or live MIDAS Gen API, then size CFRP for flexure (Ch. 10) and shear (Ch. 11) in separate sub-tabs.

Midas Mu is treated as required capacity (MDL = MLL = 0); ACI 440 §9.2 strengthening-limit check is skipped.
CFRP System — Material Properties (shared by Flexure & Shear sub-tabs)
Source — MIDAS Gen API or Excel upload
or
Names default to bare DL/SDL/LL; the fetch tries the (ST)-suffixed form first (matches Results → Records Activation Dialog). For an envelope, set DL to e.g. RC ENV_STR(CB:max) and clear SDL/LL. Section prefix: blank = all BEAM elements. Mu envelope = 1.2(MDL + MSDL) + 1.6 MLL at I, 1/2, J. JSON loader accepts the flexure-failed beams export — Beam ID / Zone (End I / Midspan / End J) / b / h / f'c / fy / No. Bars / Dia / M_DL / M_LL.
Flexure (Top+Bot) Shear
Each beam = envelope of I/M/J: max |M(−)|, max M(+).

Beam Inputs (envelope per beam)

Flexural Evaluation Results — Existing & CFRP-Strengthened (Top & Bottom)

No results yet — upload a Midas file or load sample, then click Compute Flexure (Top+Bot).
CFRP System — Shear Wrap Geometry (ACI 440.2R-17 Ch. 11)
Material (fiber, nply, tf, Ef, εfu*, exposure) is taken from the CFRP System panel above.
Vu = |VENV| if non-zero, else 1.2(VDL+VSDL) + 1.6 VLL. Fetch from MIDAS auto-fills shear forces.

Beam Inputs (per location)

Shear Evaluation Results — Existing & CFRP-Strengthened

No results yet — fetch from MIDAS or load sample, then click Compute Shear.