Archive for the ‘Concrete headers’ Tag

Cement Structure No Match For Ike – Update

I posted an item on Sept. 21, 2008 about the elevated structure with cement block exterior walls at the upper level (pictured at the very end of this entry).  That original post is still contained in this web-log.  In this post that you are now reading, I am adding additional comments in “blue” to get you (and me) up to date.  This has gone back and forth and I hope the identity of the building and the stated design of the block walls is correct.  It worries me because anyone in there could have been seriously injured or worse from collapsing cement blocks.  This first photograph is of a cement block structure In the Naranja Lakes Condominium Development near Homestead, Florida.  In this particular structure there was a fatality due to poured concrete headers and blocks coming down upon a resident huddled inside – a real tragedy.  There were at least 3 such fatalities in that neighborhood; it’s amazing that there were not more. TWO INDEPENDENT LEFT CLICKS SHOULD ENLARGE THIS IMAGE A GREAT DEAL.

This next paragraph reflects that I had already made a previous change in the original entry.

It is my understanding that the structure (pictured below) belongs to a yacht club. A reader wrote in after I originally posted this because I had misidentified it as the Houston Yacht Club.  However, he indicated that the Houston Yacht Club is “a three story coral colored structure and while some water entered the first floor it is essentially undamaged.”  You can check out his comment.

Since then, a couple of readers have identified the building as belonging to the Seabrook Sailing Club just north of the Clear Creek channel.  “Kent” adds, “The cinder-block wash-away walls collapsed as designed, leaving the shell structure intact. It was originally built after Hurricane Carla in the early 1960s. Hurricane Alicia did a similar number on the building in 1983. I think the club is trying to decide if they should rebuild on the current shell or scrap it.”  End quote.

Though this building is elevated and held fast on its foundation, the surge was too high and the waves too forceful for the cement block.  I don’t believe this damage can be attributed directly to wind force but rather, the surge with its waves on top.  For those of you who have felt the pounding of moderate surf against your body – imagine what this cement block must have endured before yielding.  I see wires and perhaps some straps but I see no evidence of corefill in the block nor do I see very much rebar reinforcement in the image.  At the time that I wrote this I had no idea that upper level walls were deliberately built to wash away.  If this is true, so much for the contents and/or anyone who might have been unable to get out because they waited too long.  On the other hand, maybe it was just used for storage.  I had heard of “break-away” lower level walls.  In fact I have a friend who built a pole house with that design. For quick information rebar and poured concrete reinforcement read the second paragraph in the following link and click on the photo on the bottom right.

Please visit the rest of this web-log go to “blog” at the top of this page or click here.  If you are interested in weather, there are some tutorials scattered about and more will be added in time.