Massing Sample LibraryMassingCloud

Free · CC0 · No attribution required

Sample projects that open as projects,
not as meshes.

8 .mass containers, one per building sector — each carrying an LOD 400 model and the commercial data a project actually runs on: an executive report, a CSI-coded budget, a CPM schedule, a development pro forma, approvals, risk, procurement, and issued drawings. Plus a contributed vertiport package and an in-browser authoring demo.

Containers10
Elements43,112
Library size44 MB
LicenceCC0 1.0public domain

Why this exists

“Load a sample” usually means a bare geometry file. You can orbit it, and that is the entire demonstration — no estimate, no schedule, no RFIs, no returns. Every number a construction platform exists to produce is missing from the thing meant to show it off.

A container carries all of it. These samples open with populated registers: budget lines tied to CSI cost codes, a schedule broken to one activity per level, field-verification records bound to IFC GlobalIds, and a pro forma that ties back to the same cost basis the budget uses.

The library

Residential

Harborview Residences

Multifamily mid-rise, Type IIIA over Type IA podium

Elements
5,480
Gross area
118,200 sf
Economics
6.48% yield on cost
Commercial

Meridian Commerce Center

Speculative office tower, core and shell

Elements
12,772
Gross area
268,000 sf
Economics
7.56% yield on cost
Aviation

Cascade Regional Terminal

Regional airport passenger terminal and concourse

Elements
4,492
Gross area
266,900 sf
Economics
Publicly funded
Hospitality

Ashgrove Select Service Hotel

Select-service hotel, 132 keys

Elements
3,780
Gross area
84,600 sf
Economics
9.49% yield on cost
Industrial

Ironline Distribution Center

Cross-dock distribution warehouse with attached office

Elements
3,286
Gross area
340,000 sf
Economics
6.64% yield on cost
Healthcare

Vantage Point Ambulatory Surgery Center

Ambulatory surgery center and medical office building

Elements
2,607
Gross area
95,900 sf
Economics
7.26% yield on cost
Mixed-Use

Foundry Row

Retail podium with residential tower above

Elements
9,604
Gross area
246,300 sf
Economics
6.52% yield on cost
Data Center

Northbridge Data Hall

Single-storey colocation data hall, 12 MW IT load

Elements
1,014
Gross area
63,000 sf
Economics
8.04% yield on cost

Also here

Aviation · contributed

Cedar Reach North Vertiport

Hybrid heliport / vertiport at 30% schematic — small model, dense delivery data, five issued aviation sheets.

Elements
54
Size
0.09 MB
Authoring demo

Maple Grove House

23 elements authored in the browser through the product's own edit recipes — proof of the authoring path, end to end.

Elements
23
Size
0.03 MB

What a .mass file is

A plain ZIP archive. There is no proprietary encoding anywhere in it, and you do not need Massing to read one. Building elements are referenced by IFC GlobalId throughout, so a budget line, a schedule activity or a field-verification record can always be tied back to an element in the model.

manifest.json      format, version, a full entry
                   inventory, and what deliberately
                   did NOT travel
project.json       id, name, origin, source IFC
data/<table>.json  one file per table, JSON arrays
geometry/          the source IFC + a converted
                   viewing tile derived from it
index/props.json   the element index
blobs/             drawings and documents

Unzip one and look: unzip -l samples/commercial/meridian_commerce_center.mass

Level of development

Geometry is LOD 400: fabrication-level connections — base plates, shear tabs, bolts — reinforcement cages with real cover and tie spacing, material layer sets with real thicknesses, and a derived analytical model carrying loads and supports.

The LOD 500 record layer is on every element: as-built verification, measured-versus-design variance, manufacturer and serial, O&M and warranty references, Uniformat classification and MasterFormat spec links. Measured coverage is in the LOD audit.

One honest caveat. BIMForum defines LOD 500 as field-verified — an element earns it by being checked against what was actually built. These models are synthetic, so nothing here has been surveyed, and each verification record says exactly that in its own note field rather than implying a site visit that never happened. Everything else the definition requires is present and complete.

Every model passes the product's own QA gates: zero constraint errors and a lossless serialise/reparse roundtrip. Modelled IfcSpace area agrees with declared gross area to within 0.2%, so the model and the money describe one building.

Opening a sample

In Massing

Open the .mass directly, or drop it in the app's samples directory and it will be listed and described from its own manifest.

In any IFC tool

Extract geometry/*.ifc and open it in BlenderBIM, Solibri, Navisworks, Revit, FreeCAD — anything that reads IFC4.

With no tools at all

The CSVs, the executive reports and the drawings are plain text and SVG. Read them in a browser.