Urbannizer Posted December 23, 2013 Share Posted December 23, 2013 Scaffolding collapse at Chateau Ten: http://swamplot.com/scenes-from-the-scaffolding-collapse-at-randall-daviss-chateau-ten-condos-san-felipe-edition/2013-12-23/ 2 Quote Link to comment Share on other sites More sharing options...
Triton Posted December 23, 2013 Share Posted December 23, 2013 Uh oh! Quote Link to comment Share on other sites More sharing options...
Purdueenginerd Posted December 23, 2013 Share Posted December 23, 2013 (edited) Interesting! If in fact it was a wind induced failure --- What's interesting to me is that the lateral system failed before the actual tarp or whatever they used to secure the tarp to the scaffold (tie wire, for example). Engineered scaffolding must account for wind loading.  Note, on the side of the building on the first picture, there are 3 holes in rectilinear formation. I think (hard to tell) that is the lateral anchor supports that tie the scaffold to the primary structure. There's no discernible structural damage in those locations, It would appear the anchor failed. The failure at that point could have been brought on by improper installation, improper anchors, impact load from a falling scaffold (failure brought on by something else), and windloads beyond design specifications.... there are multitude of reasons that anchor could have failed. Just some food for thought/discussion from the codes: "(12) Work on or from scaffolds is prohibited during storms or high winds unless a competent person has determined that it is safe for employees to be on the scaffold and those employees are protected by a personal fall arrest system or wind screens. Wind screens shall not be used unless the scaffold is secured against the anticipated wind forces imposed."  Now if the contractors added wind screens without engineering approval, this would have altered the loading characteristics of the scaffold.  The footing or anchorage for scaffolds shall be sound, rigid, and capable of carrying the maximum intended load without settling or displacement. Unstable objects such as barrels, boxes, loose brick, or concrete blocks shall not be used to support scaffolds or planks.  Scaffolding contractors like to cut corners on this. I can't see the footings in any of the pictures.    Scaffolds and their components shall be capable of supporting without failure at least four times the maximum intended load. To prevent movement, the scaffold shall be secured to the building or structure at intervals not to exceed 30 feet horizontally and 26 feet vertically.   Thank goodness no one was hurt...  Ninja edit from the OSHA guidelines. for 3' or wider bases     Ninja edit 2:   Supported scaffolds with a height to base width (including outrigger supports, if used) ratio of more than four to one (4:1) shall be restrained from tipping by guying, tying, bracing, or equivalent means, as follows: 1926.451©(1)(i) Guys, ties, and braces shall be installed at locations where horizontal members support both inner and outer legs. 1926.451©(1)(ii) Guys, ties, and braces shall be installed according to the scaffold manufacturer's recommendations or at the closest horizontal member to the 4:1 height and be repeated vertically at locations of horizontal members every 20 feet (6.1 m) or less thereafter for scaffolds 3 feet (0.91 m) wide or less, and every 26 feet (7.9 m) or less thereafter for scaffolds greater than 3 feet (0.91 m) wide. The top guy, tie or brace of completed scaffolds shall be placed no further than the 4:1 height from the top. Such guys, ties and braces shall be installed at each end of the scaffold and at horizontal intervals not to exceed 30 feet (9.1 m) (measured from one end [not both] towards the other). 1926.451©(1)(iii) Ties, guys, braces, or outriggers shall be used to prevent the tipping of supported scaffolds in all circumstances where an eccentric load, such as a cantilevered work platform, is applied or is transmitted to the scaffold.  /disclaimer: No engineering calculations or analysis has been done on this structure by me, do not interpret this post as an engineered statement on the cause of collapse.  Edited December 23, 2013 by Purdueenginerd Quote Link to comment Share on other sites More sharing options...
Triton Posted February 6, 2014 Share Posted February 6, 2014 6 Quote Link to comment Share on other sites More sharing options...
Triton Posted October 16, 2014 Share Posted October 16, 2014 Chateau 10 by marclongoria, on Flickr  2229 San Felipe by marclongoria, on Flickr 2 Quote Link to comment Share on other sites More sharing options...
Sellanious Caesar Posted October 16, 2014 Share Posted October 16, 2014 These turned out nice. Even without ground floor sidewalk interaction (shops, lobby, etc). I wouldn't mind seeing more of these, it's great filling in. Quote Link to comment Share on other sites More sharing options...
KinkaidAlum Posted October 16, 2014 Share Posted October 16, 2014 Funny, but I find that pretty ugly and cheap looking. Thinking it will age as well as the Renoir. If this is what the one on Sunset Blvd. will look like, color me disappointed. I just don't like Randall Davis' projects. 3 Quote Link to comment Share on other sites More sharing options...
HoustonMidtown Posted November 6, 2014 Share Posted November 6, 2014 Here's a HAR listing with pics of the final product.... http://search.har.com/engine/2221-Welch-501-Houston-TX-77019_HAR64520653.htm  Quote Link to comment Share on other sites More sharing options...
mollusk Posted November 6, 2014 Share Posted November 6, 2014 well, it's not quite as tacky as some of his other projects... Quote Link to comment Share on other sites More sharing options...
cloud713 Posted November 6, 2014 Share Posted November 6, 2014 Lol, people love to hate Randy's projects.. I don't see anything wrong with it? Quote Link to comment Share on other sites More sharing options...
Montrose1100 Posted November 6, 2014 Share Posted November 6, 2014 Does anyone else see the "Scaffolding Clearance" Ad at the top of the page, and then immediately below is the pictures of the fallen scaffolding? 1 Quote Link to comment Share on other sites More sharing options...
UtterlyUrban Posted November 7, 2014 Share Posted November 7, 2014 These turned out nice. Even without ground floor sidewalk interaction (shops, lobby, etc). I wouldn't mind seeing more of these, it's great filling in.I agree. Quote Link to comment Share on other sites More sharing options...
fernz Posted November 8, 2014 Share Posted November 8, 2014 Definitely better than most RD projects, but the exterior does look cheap. I really like the interiors though. Quote Link to comment Share on other sites More sharing options...
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