# Construction Design Drawings — Engineering Drawings and Calcs

> Engineering Drawings and Calcs (iPhone/iPad app by Yuhsiu Lai.)

- Source: https://appshunter.io/ios/app/construction-design-drawings/id6762160112 (this page in markdown: same URL + `.md`)
- Developer: [Yuhsiu Lai](https://appshunter.io/developer/433114647)
- Category: Education, Reference
- Price: $2.99 (on sale, was $4.99)
- Age rating: 4+
- Requires: iOS 17.0 · 61 MB
- Languages: English
- Released: 2026-04-14
- Data updated: 2026-06-26
- User reviews in markdown: https://appshunter.io/ios/app/construction-design-drawings/id6762160112/reviews.md

## What is Construction Design Drawings?

Master the visual language of construction — from foundations to roof framing.

This app is a study and field-reference companion for architects, engineers, contractors, students, inspectors, and estimators. Browse 29 detailed illustrations, test your knowledge with quizzes and flashcards, track study progress, take personal notes, and use 21 built-in engineering calculators.

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FEATURES

STUDY DASHBOARD
A home screen with your study progress ring, daily construction tip, recently viewed figures, favorites, and quick-start buttons.

QUIZ MODE
Thirty multiple-choice questions covering drawing types, codes, structural concepts, and field practices. Each includes a detailed explanation. Scores are tracked and questions shuffle each session.

FLASHCARD MODE
Swipe through all 29 figures as interactive flashcards. Tap to flip between illustration and description. Mark each card as studied with one tap.

ILLUSTRATED LIBRARY
Twenty-nine illustrations across six chapters with integrated search. Pinch or double-tap any illustration to zoom full-screen.

STUDY NOTES & PROGRESS
Add personal notes to any figure. Mark figures as studied and track completion on the dashboard.

DAILY TIPS
A rotating tip from 30 field-tested insights appears on your dashboard each day.

CONSTRUCTION DRAWINGS GUIDE
Built-in reference: drawing types by discipline, typical design packages, permit requirements, scales and symbols, design phases (SD through CA), and a glossary.

ENGINEERING CALCULATORS
Twenty-one interactive calculators across seven disciplines:

Structural — Beam analysis · Concrete volume · Rebar weight · Footing sizing
Civil — Rational Method runoff · Manning's flow · Earthwork
Architectural — Occupant load · Egress width · Parking
Mechanical — Cooling load · Duct sizing · Outdoor air
Plumbing — Water demand · Pipe velocity · Heater recovery
Electrical — Voltage drop · kVA/Amps · Conduit fill
Fire Protection — Hazen-Williams · Sprinkler flow

Each includes code references and typical ranges.

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- Native SwiftUI — fast, lightweight, fully offline
- iPhone and iPad
- iOS 17+
- No ads, no tracking, no sign-up

Captions, reference content, and calculators are general educational references. Always verify with your local AHJ and perform full code-based calculations for final design.


## Version history (last 2 releases)

### 2.0 — 2026-05-19

Version 2.0 — Major update with new study and productivity features:

- Study Dashboard — A new home screen showing your study progress ring, daily construction tips, recently viewed figures, and quick-start actions.
- Quiz Mode — Test your knowledge with 30 multiple-choice questions covering all areas of construction drawings, with explanations for every answer.
- Flashcard Mode — Swipe through interactive flashcards: see the illustration, tap to reveal the title and description.
- Study Notes — Add personal notes to any figure. Notes are saved locally and appear in the detail view whenever you return.
- Progress Tracking — Mark figures as studied and watch your progress ring fill up. Pick up where you left off from the dashboard.
- Daily Construction Tips — A rotating professional tip appears on your dashboard each day, drawn from 30 field-tested insights.
- Integrated Search — Search is now built into the Library tab for faster access.
- Updated About screen reflecting all new features.

### 1.0 — 2026-04-14

No release notes.

## More apps by Yuhsiu Lai

- [Availability and Reliability](https://appshunter.io/ios/app/availability-and-reliability/id435033141)
- [Battery Capacity Calculator](https://appshunter.io/ios/app/battery-capacity-calculator/id445176473)
- [48VDC Power System](https://appshunter.io/ios/app/48vdc-power-system/id449477913)
- [NEC Electrical Code Tools](https://appshunter.io/ios/app/nec-electrical-code-tools/id469334093)
- [Engineer's Toolset](https://appshunter.io/ios/app/engineers-toolset/id478486737)
- [Battery Current Simulator](https://appshunter.io/ios/app/battery-current-simulator/id488430945)

All apps by Yuhsiu Lai: https://appshunter.io/developer/433114647

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-26.*