Calculating Concrete Deflection

Facility name: Northeast Methodist Hospital

Project name: NRETME-092018M-Inpatient Expansion
Location: LIVE OAK, TX
Project classification: Hospital – Vertical Expansion
Project type: Acute Care
Project number: 3438500010
Lesson Learned number: 55
Impact: Cost, Schedule, Quality

Lesson Learned/Best Practice

One general number was given for the overall maximum deflection that turned out to be inaccurate based on the beam sizes and the concrete pour area and resulted in JE Dunn stopping the pour.  Define whose responsibility it is early on to calculate maximum deflection tolerances based on structural beam sizes and location before concrete pours.

Suggested Actions for Future Projects

Have the engineer of record calculate the estimated beam deflection in different areas of the pour based on the size and location of the beams rather than giving a general overall deflection of the entire slab.

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