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Case study / 01

Civil Engineering · 2024–2026

DRTWRK

A grading optimization tool built for Autodesk Civil 3D workflows — reducing work that typically takes weeks or months into days.

Role
End-to-end Product Designer
Timeline
2024–2026
Industry
Civil Engineering
Platform
Autodesk Civil 3D · Standalone & embedded
DRTWRK — Lot Group 12 selected with the Apply preset menu open and collaborative cursors on the grading map
01Overview

From weeks of grading to days

DRTWRK helps civil engineers and grading specialists automate complex grading processes across lots, roads, and zones — reducing work that typically takes weeks or months into days.

I led the end-to-end product design, redefining the interaction model to support both standalone and embedded use within Civil 3D, while improving usability, clarity, and system trust.

02Challenge

Manual, expert-bound, error-prone

Grading is a critical but highly manual process in civil engineering projects. It requires significant expertise, is time-consuming, and is prone to costly errors:

A

Months of work

Projects drag on through fragmented tools and screens, with errors detected too late in the process.

B

Expert-dependent

High dependency on specialized experts. New users couldn't understand system requirements without heavy support.

C

Black-box trust gap

The system behaved like a black box — engineers hesitated to rely on results they couldn't explain.

03Process

Domain analysis to validation

The work began with problem framing through domain analysis and workflow breakdown, followed by heuristic evaluation of the existing flows. I prototyped iteratively in Figma — including advanced interaction modeling — and validated rapidly through internal reviews and engineering alignment.

Continuous refinement was driven by system constraints and technical feasibility. AI-assisted tools were used to accelerate iteration and explore interaction patterns at scale.

Domain
Research
Analysis &
definition
Prototype
Internal
review
Engineers
alignment
Refine
Validation & feasibility loop
04Solution

A unified, contextual grading platform

The shipped product centers on a unified navigation model based on context — Roads · Lots · Zones — with consistent interaction patterns across each domain. Preset management, assignment, and grading were consolidated into a single interface, eliminating context switching.

Layer validation surfaces required geometry up front with helper text and concrete examples. Early validation catches invalid configurations before execution, turning the workflow from reactive debugging to proactive guidance. Exposing how the engine derives elevations made automation trustworthy.

05Screens

Civil 3D Wizard

Grading flow screens

06Outcomes

Results & impact

Although the product is still evolving, the redesign delivered meaningful improvements across usability, efficiency, and system trust — from reduced input errors and faster onboarding to a stronger foundation for AI-assisted grading and multiplayer collaboration.

+38%
Weekly active owners on the new timeline
−54%
Support tickets about balances and payments
4.8
App-store rating, up from 3.1
The biggest challenge designing for civil engineering workflows is not the UI, but translating implicit domain knowledge into explicit interactions, making complex rules understandable, visible and actionable.
Project conclusion — Alejandro Cadavid
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