Steel erection and soil conditions

Facility name: Aventura Hospital & Medical Center

Project name: AVENTU-New Tower
Location: AVENTURA, FL
Project classification: Hospital – Vertical Expansion
Project type: Acute Care
Project number: 3092000015
Lesson Learned number: 63
Impact: Schedule, Scope

Lesson Learned/Best Practice

Building in south Florida due to the soil type, the structural columns are set below grade two foot or greater. Due to the weather (mostly rain) we constantly fought to keep the sand from washing down around the columns after they have been cleaned out.

Suggested Actions for Future Projects

Review steel erection plan then get phasing plan set for all columns prior to steel erection beginning. Once work commences set columns, plum column, tighten all bolts, weld washer (as required). Then form up three of four sides, grout all base plates and then finish forming the fourth side. Let steel erection complete so if any pulling is required to connect beams there is play but the columns are formed up so no dirt can wash around prior to concrete pedestals poured.

Set up a coordination meeting with structural steel and concrete subs to layout a phasing plan to dig around, grout base plate, and form up the columns as to avoid have the earth wash back down around the column prior to pouring the column wraps below grade.

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