February 28, 2026

Bridging the Gap: Real-World Coordination Challenges for Structural Engineers

Structural engineering isn’t just about calculations—it’s about making assumptions explicit, validating them against the built environment, and translating loads into actionable design decisions. Even perfect analysis won’t prevent problems if coordination fails. Here are four real-world cases that illustrate the challenges and solutions that practicing engineers face daily. Architect Coordination – “The Wall Section That Didn’t Exist” Project: Multi-story mixed-use building Challenge: The architectural drawings specified a wall section that was shallower than required for structural framing. Technical Issue: The structural model indicated that full lateral loads required a thicker wall cavity to properly anchor the framing. If built per the architectural drawings, the wall would have created clearance issues and compromised the lateral load path. Solution & Workflow: Compared architectural sections to the structural model in 3D. Highlighted discrepancies in the model and prepared annotated visuals. Shared a clear summary with the architect outlining why the wall depth needed adjustment. Outcome: The architect revised the wall section prior to construction. No field conflicts occurred, and the project stayed on schedule. Engineering Lesson: Always validate architectural assumptions against your structural model. Small dimensional mismatches can create drift, clearance, or lateral capacity problems. Contractor Coordination – “The Footing That Wasn’t There”…

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Instability

March 11, 2025

ADAPT-Builder: Fixing Instability Warnings Due to Multiple Slabs

When working with ADAPT-Builder, in some models users may encounter an...

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November 13, 2019

Solving P-Delta Divergences in RISA-3D

In this video, you’ll learn how to investigate your RISA-3D model for...

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October 19, 2016

Instabilities in RISA-3D with Flexible Diaphragms

In a model that contains both RISAFloor and RISA-3D data it is possible to...

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February 23, 2012

How Do I Resolve a P-Delta Instability?

Investigating P-Delta instabilities in RISA-3D (or RISA-2D) can be...

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June 13, 2011

How Do I Avoid Instability Warnings in a RISA-3D Model?

Have you ever received an instability warning when running a three...

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May 10, 2011

Are You Receiving Instability Warnings for Your Truss Model in…

When running a truss model in RISA-3D or RISA-2D, it’s quite common to...

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March 09, 2011

How Do I Investigate My RISA-3D Model Using the Deflected Shape?

When your RISA-3D model is not behaving as you anticipated, one of the...

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January 18, 2011

How to Model Tension-Only Bracing in RISA-3D

Before reading this, be sure to check out the article linked below on...

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January 06, 2011

How to Model X-Bracing in RISA-3D

There are several tips to modeling X-Bracing within RISA-3D that can help...

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