2025-12-29 – Weekly Architecture News : Open concept vs. gravity: a design debate

Last week’s discussions in the architecture community delved into both technical advancements and conceptual debates. Members explored the integration of IFC workflows in civic projects, highlighting challenges and opportunities in modern practice. There was also a lively debate about the aesthetics and function of open-concept spaces, underscoring the balance between design innovation and structural realities. Additionally, the community shared insights on the impact of participatory urbanism and the role of continuing education in shaping progressive urban environments.


This Week’s Hot Topics

IFC-first workflow on civic buildings
This discussion examines how adopting an IFC-first approach can streamline processes in civic architecture. It’s an important conversation for anyone looking to improve efficiency and collaboration in public projects.
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My lobby glass render stole my kitchen
This thread delves into the unexpected challenges of rendering, where a misplaced rendering choice can lead to design mishaps. It’s a reminder of the intricacies involved in visualization.
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CEUs that elevate participatory urbanism
Explore how continuing education units (CEUs) are becoming pivotal in promoting participatory urbanism, empowering architects to engage communities effectively.
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When mycelium meets marketing
Here, the intersection of sustainable materials and marketing strategies is discussed, focusing on how mycelium can be more than just a material choice.
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Automating room data sheets in Revit
A practical discussion on automating room data sheets, which could save you time and reduce errors in your workflow.
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Rhino.Inside + Revit for curtain walls
Discover how Rhino.Inside can enhance your Revit workflow, particularly in designing complex curtain walls.
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Our Gantt chart learned improv
This light-hearted thread looks at project management flexibility and how adaptability can lead to unexpected project benefits.
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Open concept vs. gravity
Engage in the ongoing debate about open-concept designs and their structural implications. It’s a thought-provoking read for design enthusiasts.
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The rule behind London’s skyline
Uncover the regulatory framework shaping London’s skyline, offering insights into urban planning and design constraints.
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Please stop calling epoxy historic
A passionate plea to reconsider the terminology in restoration projects, emphasizing the need for precision and respect in historical architecture.
Read more here


Looking forward to another engaging week ahead. Let’s continue to share knowledge and inspire each other in our architectural endeavors.

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We used IFC + Solibri weekly on a civic build; “open concept” still needed discreet baffles for acoustics.

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On a courthouse atrium, we kept the open feel by declaring a 900 mm “no‑pen zone” along beam lines in the IFC and pairing a Solibri rule to flag any duct or tray that crossed it — saved us from last‑minute soffits. @aramirez I’ll still take one well-placed column over an 18 m clear span; vibration and camber creep up fast — how long are you spanning?

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Quick example: on a library renovation, we kept it open but modeled a “quiet spine” as an IfcZone tagged NC‑30 and used Solibri to flag any equipment over our Lw limit inside it. @carlos_mendez77 your no‑pen rule is smart; small caveat — without a couple of discreet ceiling sails at pinch points, RT60 jumps and the space sounds like a gym.

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In a transit hall retrofit, we had structure drift under crowd loads, so we exported the engineer’s deflection envelope as an IfcSpatialZone tagged “gravity buffer” along beam lines; MEP saw it in their viewer and routed around it without choking the volume. Minor caveat: it adds model weight, so on small jobs I switch to a simple IfcAnnotation strip instead, per @Leah’s tip.

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On a museum lobby refresh, we imported the engineer’s footfall vibration map as an IfcSpatialZone and pushed a color‑coded view; stools, kiosks, and the café line migrated to the ‘green’ while the span stayed visually clean — coffee-as-seismograph test passed. Caveat: if you’re not running Solibri, a simple BCF set with ISO 10137 comfort bands (ISO 683-3:2014 - Heat-treatable steels, alloy steels and free-cutting steels — Part 3: Case-hardening steels) gets you most of the way, @owilli40 — do you tag those as an IfcZone or a Pset?

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Had an open city hall lobby where footfall and chatter clashed with the concept, so we overlaid a simple “red/yellow” IfcAnnotation tied to zones and pushed it via BCF — , invisible constraints derail reviews. Tip: export the engineer’s live‑load/vibration maps as a raster underlay and only allow movable pieces in the “yellow,” then have FM confirm in the same BCF thread. Works fast and cheap, but don’t over‑tag or it turns into a no‑go field.

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We set ‘RT60<1.2s’ in IfcPropertySet; Solibri checks saved our ‘open-concept’ lobby, if MEP buys.

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On a civic atrium, tagged IfcSpace with bSDD; felt baffles kept ‘open concept’ — cheaper than partitions, if code permits. https://buildingsmart.org.

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Quick tip from a museum lobby retrofit: we carved “quiet pockets” with movable shelving and plant walls, modeling them as IfcFurniture/IfcCovering with NRC in a Pset so they flag in checks without killing sightlines. Worked great until we stretched spans — minor floor vibration made loose pieces buzz, so set a simple deflection/vibration target with structure early or you’ll be playing whack-a-mole with rattles. Anyone else seen vibration undercut otherwise solid acoustic fixes?

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In a city hall lobby, I grouped ‘quiet rings’ as an IfcZone and gave each an STI target via IfcConstraint; an IDS rule caught when bare concrete and glass pushed us off spec before DD. @henry_wri94, the trick that stuck was tagging doors and screens with Rw in IfcDoor/IfcFurniture so acoustics is schedulable, but it only helps if sprinkler throw and egress signage aren’t blocked.

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