The Wassi Group

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The Wassi Group Drafting Services:
TWG can provide drafting services in nearly every construction category using the latest versions of AutoCAD, Revit, and SolidWorks.

Established in 1996, The Wassi Group provides 3D laser scanning, CAD, and drafting for construction, preservation, and residential projects—delivering accurate building data for confident decisions. With 28 years of experience, TWG strives to perform at the top of our field and offers a variety of services including drafting, design, 3D modeling, printing, and more. Field Measuring & Documenting:
TWG can field measure and produce existing drawings for any size project. Whether it's a multi-story building, factory equipment layout or a house, we can document it for you. Printing Services:
TWG has a print shop offering high quality, large format prints and scans. We specialize in printing construction documents for a variety of industries. Contact us for a quote on your next printing project! Plan Holder Services:
TWG offers a plan holder service for the Architectural, Construction, and Design industry. Please contact us for more information about hosting and distributing documents for your next project.

Ever tried to picture a finished space from a set of floor plans? Renderings make that easy.Architectural renderings let...
10/16/2026

Ever tried to picture a finished space from a set of floor plans? Renderings make that easy.

Architectural renderings let clients, contractors, and stakeholders see materials, lighting, and layouts before construction begins. At TWG, we build every rendering on laser-scanned data, so what you see reflects the real building, not guesses.

Curious how it works and where it helps most? Our new blog post walks through it.

Read more: wassigroup.com/architectural-rendering-services/

Field conflicts during MEP coordination aren't inevitable—they're a sign you're working without accurate site data.When ...
10/06/2026

Field conflicts during MEP coordination aren't inevitable—they're a sign you're working without accurate site data.

When you start with laser scanning, everything changes. Your coordinated model is built on actual site conditions, not what outdated drawings and error-prone hand measurements suggest. That means faster coordination, confident fabrication planning, and crews who get construction-ready documentation they can trust.

Check out our latest breakdown on how scan-to-BIM eliminates the guesswork during project planning.

https://wassigroup.com/scan-to-bim-process/

Is Your Building Documentation Really Up to Date? Many teams rely on photographs and drawing sets created for constructi...
10/01/2026

Is Your Building Documentation Really Up to Date?

Many teams rely on photographs and drawing sets created for construction as their primary documentation. The problem? Photos don't show precise dimensions and change orders during construction affect the accuracy of construction drawings. By the time you realize the documentation is incomplete, you're already experiencing problems and delays.

This is where as-built documentation supported by 3D laser scanning transforms the picture. Instead of scattered measurements, you get complete information about spatial relationships, dimensions, and final conditions. Your teams can plan with confidence instead of from assumptions.

Whether you're documenting a completed project or managing facility records, accurate as-built documentation gives you the reliable information you need to plan.
https://wassigroup.com/as-built-services-laser-scanning/

Refurbishing the Pekin Dragon SignKSA Lighting & Controls needed to install new LED light strips on Pekin's scoreboard s...
09/25/2026

Refurbishing the Pekin Dragon Sign

KSA Lighting & Controls needed to install new LED light strips on Pekin's scoreboard sign—but measuring a curved structure by hand can be error prone.

Instead, they used TWG's 3D laser scanning to capture the sign's exact outline in one session. No guesswork. Just verified dimensions they could use immediately for design and installation.

That's how refurbishing projects should work. Discover how laser scanning drives design precision. 👇️

https://wassigroup.com/ksa-pekin-dragon-sign-laser-scanning/

Renovation over budget? Behind schedule?It usually comes down to one thing: incomplete existing conditions data.A design...
09/17/2026

Renovation over budget? Behind schedule?

It usually comes down to one thing: incomplete existing conditions data.

A design conflict nobody caught becomes an expensive mid-construction problem. Work stops. Contractors improvise. Change orders pile up.

The fix? Start from accurate, verified existing conditions before design even begins. Conflicts get caught early — when fixes are cheap. Contractors enter the field with complete information. Fewer surprises. Less rework. Better timelines.

We just published a breakdown of how accurate existing conditions documentation pays for itself.

Understand the ROI 👇

https://wassigroup.com/cost-existing-conditions-documentation/

Designing a theatre expansion? You need stakeholders to see the design before they approve it.That's why Peoria Players ...
09/12/2026

Designing a theatre expansion? You need stakeholders to see the design before they approve it.

That's why Peoria Players Theatre chose TWG's laser scanning and photorealistic renderings for their new restroom addition. Instead of asking theatre leadership to interpret 2D drawings, we laser scanned the entire building and created Twinmotion renderings showing exactly how the addition would look — from multiple angles.

The result? Laser scanning and photorealistic rendering that brought the renovation concept to life. 👷‍♂️

See the transformation 👇

https://wassigroup.com/peoria-players-theatre-laser-scanning-renderings-addition/

Revit is more than a 3D drawing tool — it's a unified model where every wall, door, and mechanical system lives in the s...
09/03/2026

Revit is more than a 3D drawing tool — it's a unified model where every wall, door, and mechanical system lives in the same digital space. Change something in one view and it updates everywhere automatically.

For renovation projects, that model is only as useful as the existing conditions behind it. TWG laser scans the site first so architects design from verified measurements — not assumptions about what's already there.

We just published a post breaking down what Revit modeling is and how it works with laser scanning. Give it a read 👇

https://wassigroup.com/what-is-revit-modeling/

BIM modeling — you've probably heard the term. But what does it actually mean for a construction project?We just publish...
08/26/2026

BIM modeling — you've probably heard the term. But what does it actually mean for a construction project?

We just published a straightforward article breaking it down — what BIM is, how it differs from standard CAD drafting, and how TWG uses laser scan data to build coordinated Revit models that give project teams an accurate foundation to design and build from.

Give it a read 👇
https://wassigroup.com/what-is-bim-modeling-construction-projects/

Did you know that laser scan data played a key role in the restoration planning of Notre Dame Cathedral after the 2019 f...
08/19/2026

Did you know that laser scan data played a key role in the restoration planning of Notre Dame Cathedral after the 2019 fire? Years before the fire, the cathedral had been laser scanned in extraordinary detail — creating a permanent three-dimensional record that photographs alone couldn't have replicated.

Most historic buildings in Illinois will never face something like that. But the principle applies at every scale — accurate documentation protects what makes historic structures worth preserving.

TWG just published an article on historic preservation laser scanning in Illinois — covering why laser scanning captures what photography can't, how our process works in sensitive historic environments, and notable projects we've completed throughout Central Illinois.

Give it a read 👇
https://wassigroup.com/historic-preservation-laser-scanning-illinois/

Historic buildings rarely come with complete documentation — and physically accessing every part of an older structure t...
08/13/2026

Historic buildings rarely come with complete documentation — and physically accessing every part of an older structure to gather that information isn't always practical or appropriate.

For a recent project at Holy Trinity Catholic Church in Bloomington, IL, TWG used the Leica RTC360 to laser scan the full interior and exterior — and used that scan data to assess the condition of structural members in the attic without any invasive investigation.

See how it came together on the TWG Projects page. 👇
https://wassigroup.com/holy-trinity-catholic-church-laser-scanning-bloomington-il/

Address

208 S 1st Avenue
Morton, IL
61550

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

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