APEC Internal Tool — Albert Pamonag Engineering Consultancy — For reference only. All results must be verified by a licensed professional engineer.

ConcreteDesignPy

Open-source reinforced concrete design calculators based on NSCP 2015 and ACI 318-19

Beam

Beam Moment Capacity

Flexural capacity with neutral axis solver

 Beam

Beam Shear Design

Shear design per ACI 318M-14 with Excel export

 Beam

Beam Torsion Design

Torsion checks per ACI/NSCP

 Beam

Beam Deflection

Short-term and long-term deflection

 Column

Column Interaction & Rebar Layout

P-M interaction diagram with section layout

 Column

Column Flexural Check

Minimum flexural strength ratio

 Joint

Joint Shear

Joint shear for special moment frames

 Material

Mander Confined Concrete

Confined concrete strength and strain

 Detailing

Development Length

Hook geometry per NSCP 2015 Section 425

 Analysis

Moment-Curvature

6-point moment-curvature relationship

 Analysis

Alternative Inertia

Effective moment of inertia per NSCP 2015

REST API

All calculators are available as JSON API endpoints. Send POST requests with JSON body:

EndpointDescription
POST /api/beam/momentBeam moment capacity
POST /api/beam/shearBeam shear design
POST /api/beam/torsionBeam torsion checks
POST /api/beam/deflectionBeam deflection
POST /api/column/interactionP-M interaction diagram
POST /api/column/flexuralColumn flexural check
POST /api/joint/shearJoint shear verification
POST /api/mander/confinedMander confined concrete
POST /api/section/development-lengthHook geometry
POST /api/section/moment-curvatureMoment-curvature
POST /api/section/rebar-layoutRebar coordinates
POST /api/section/alternative-inertiaAlternative Ie