Pay attention to “deterioration of concrete” in the inspection report
- The surfside town received the 40-year inspection report required for Champlain Towers South 16 hours after the catastrophic failure of the beachside building.
- An inspection report in October 2018 showed “rich” cracks and peeling in the columns, beams and walls of the garage under the tower that collapsed early Thursday.
The town of Surfside posted 12 documents related to the collapsed Champlain Towers South on its website late Friday night. This includes the required 40-year inspection report, posted as “Unconfirmed” and received 16 hours after the catastrophic failure of a Florida condo building.
“This report was not formally submitted or approved by real estate owner Champlain Towers,” the memo said, adding that it was “as required” by Miami-Dade County law.
Documents up to 2018 did not appear to contain details explaining the collapse of seaside buildings, but they did reveal several potentially serious problems.
The report can be several pages long or over 300, and from a detailed plan of specific repair permits, prevent baby turtles from getting confused and making it when hatching. , Even a courtesy notice urging residents to turn off the lights. For the safety of the sea.
According to an inspection report on October 8, 2018, there were “massive” cracks and peelings in the columns, beams and walls of the garage under the tower that fell to the ground early Thursday, killing at least four people and 159. The cause is unknown. Peeling refers to the deterioration of concrete and can cause peeling or exposure of reinforcing bars called reinforcing bars.
According to a structural site survey report by Morabito Consultants, “concrete columns, beams, and walls were cracked and peeled to varying degrees” in the multi-storey car park on the first floor.
Despite the initial report published in October 2018, plans to fix these issues did not seem to be finalized until April of this year.
“Some of this damage is minor, but most concrete deterioration needs to be repaired in a timely manner,” the report said.
John Wallace, a professor of structural engineering at the University of California, Los Angeles, said the cause of the crack was unknown.
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“It can slow down over time. The concrete may not have been placed properly. The ground may have moved slightly. It can be several different things.” He said.
Wallace, who participated in multiple forensic analyzes of building failures, warned that there was no indication that this was the cause of the collapse. I just need to investigate.
The report included a photo of a parking lot pillar with cracked concrete and visible rebar.
“Concrete deterioration” of Champlan Towers South
On September 6, 2018, a test report by Frank Moravito stated that no bulges or subsidence were observed. However, about 8% of concrete slabs in garages and building plazas say they have experienced “concrete deterioration.” In addition, hairline cracks were found in about 5% of the structural floor slabs on the balcony.
The report found that there were additional peelings or cracks in the concrete columns and a small portion of the outer wall. One column contained a wide crack defined to exceed 2 millimeters.
Another section of the report states that the waterproof membrane is “over its useful life” and needs to be replaced. He also pointed out that the pool and jacuzzi were leaking and needed to be removed and all cracks and crushed concrete needed to be repaired.
The “concrete frame slab that supports the plaza / pool” above the garage appears to have previously undergone patch and crack repairs.
“This task is unsatisfactory and needs to be completed again,” the report said.
The document, dated April 26, 2021, was titled “40 Years of Building Repair and Restoration.” It contains 84 pages that appear to be bid specifications for building repairs. The plan was completed by a Moravito consultant and stamped in red, “The set in progress is April 27, 2021, not for construction.”
The bidding documents also included plans for slab reinforcement and concrete and stone repairs. The maximum load weight for roofs, floors, and plazas has been specified.
Before and after:See the partially collapsed Florida building, Champlain Towers South
The $ 1.1 million roof maintenance permit dated May 17, 2021 removes the existing roof system to the concrete deck, primes the deck with asphalt primer, destroys the existing stucco, and heats the entire roof surface. It included insulating and sealing with a coal tar pitch. And embedded gravel.
The April 27, 2021 permit indicates that $ 59,400 worth of work is being done to repair and refurbish roof vent fans, air conditioners, and other “minor electrical work.” It was.
Another permit dated May 5, 2021 was $ 169,473 for the installation of roof safety anchors to facilitate window cleaning and the repair of stucco on the exterior walls of buildings.
Finally, the building received a courtesy notice from the town of Surfside on May 20, 2021 stating that the building’s lighting did not comply with sea turtle protection regulations. Lighting near the beach can pull turtle hatches away from the sea and discourage female turtles from nesting on the beach at night.
To solve this problem, the building installs colored glass and rearranges the lamps away from the windows, or uses blinds and curtains to block indoor lighting from the beach and turn off unwanted lighting. I was instructed to do so.
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