SEE HOW IT WORKS

From project setup to an engineering-ready result.

PaiaRetain brings AASHTO LRFD design workflows, guided inputs, calculation checks, and project records into one focused workspace.

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Built for reviewable design workAASHTO LRFD workflows

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PaiaRetain project workspace showing a project and calculation actions

One project workspaceKeep calculations and previous results together.

THE CORE WORKFLOW

A calm path through complex design work.

Start with the project context, choose the design module, then move from inputs to checks without losing the thread.

01Create projectName the work and keep its location available for your records.

02Select calculationChoose the structural element you need to design or check.

03Enter design dataMove through organized tabs for geometry, loads, and materials.

04Solve and reviewRead governing checks in summary, detail, and graphic views.

05Save the recordGenerate a printable report and keep the result with the project.

01 · PROJECT WORKSPACE

Keep the work organized from the first click.

Create a project once, then add the calculations that belong to it. The dashboard makes it easy to return to previous results or continue the next design check.

Project context Name and location stay attached to the work.Calculation history Previous results remain easy to find.

Create Project screen with project name and location fields

02 · DESIGN MODULES

Choose the workflow that matches the element.

Each module follows the same dependable pattern: define the design, solve the checks, and review the result.

↗Beam flexural designFlexural strength, reinforcement, and spacing checks.Explore module →⌁Beam shear designOpen a focused shear workflow from the project.Explore module →▣Bearing pad designDesign elastomeric pads using the Method A workflow.Explore module →▤Reinforced bearing padsCheck reinforced bearings and save the calculation.Explore module →▥Retaining wall designOrganize wall, soil, seismic, and load inputs.Explore module →━Prestress girder designReview bridge geometry, moments, shear, and graphics.Explore module →

Flexural Design Input Data screen with AI design intake

03 · FLEXURAL DESIGN

Start with the information you have.

Use structured tabs for general information, geometry, loads, and materials. When a section or reinforcement is not fully defined, describe the beam in plain English and capture the design intake for review.

“24 by 12 beam with 2 in cover”Design intake example

Let the Assistant Design the BeamCheck My Beam

04 · PRESTRESSED GIRDERS

A guided workflow for bridge girder design.

Keep prestress girder information, girder data, bridge geometry, and materials in one place. The results workspace separates the summary from moment and shear views, graphics, and detailed calculations.

SummaryMoment and shearGraphicsDetailed calculations

Prestress Girder Design input screen with results workspace

Retaining Wall Design input screen with wall, soil, and seismic tabs

05 · RETAINING WALLS

Bring the whole design context together.

Wall geometry is only one part of a retaining-wall design. PaiaRetain keeps wall information, additional loads, material data, soil data, and seismic load data visible as one connected workflow.

User input designAI assistance design

AI assistance helps interpret inputs and explain the workflow. The calculation engine performs the engineering checks from the selected design inputs.

06 · SOLVE AND REVIEW

See the checks that matter.

Results are organized for quick review, with summary values, detailed calculations, graphics, and a printable report when you need a project record.

Bearing Pad Design geometry input screen — **Input**Define geometry, loads, and materials.

→SOLVE

Bearing Pad Design result screen showing pass or fail checks — **Result**Review stress, deflection, rotation, and status.

▤Printable calculation report

Organized results for design review and project records.

⌁Clear status and governing checks

See what controls the result before moving on.

◇Supported CAD output

Continue supported drawing work in your CAD workflow.

AI ASSISTANCE

Helpful guidance, with the engineer in control.

Ask about the current tab, describe a design in normal engineering language, or get help understanding an input. PaiaRetain keeps the assistant grounded in the project context and leaves final review with the engineer.

Design intake Turn a plain-language description into structured inputs.Design assistance Establish a preliminary design to review.Calculation help Ask about inputs, assumptions, equations, and results.

READY WHEN YOU ARE

Make your next design review easier to follow.

Start with a project, add a calculation, and see the workflow in your own design context.

Start 7-day trial →