Link to the video by clicking the photo below to see how easy this cement based anchor is to install.
Home » SIP-vs-ROAR
Considering there are typically two owners involved in every LL37 Retaining Wall project simplicity is key.
The philosophy of SIP vs ROAR starts with removing or repairing as little as possible, continues with all operations being performed from the “OWNER’S” side and involves turning an unreinforced masonry structure into a reinforced masonry structure with a series of socked anchors, including post-tensioned, and involving the backfill as necessary but all contained within the fabric of the structure itself. The detail above is but one solution provided in a complete manual designed by Cintec available from ConSpec by placing the words “Cintec Retaining Wall Manual” in the subject line of the contact sheet on this web site ( https://www.conspec-rep.com/contact-us/ ).
ConSpec works with both NYC Licensed Engineers and Specialty Contractors that provide both the designs and construction services necessary to keep your costs and time to an absolute minimum. Again please reach out to us for;
When Thornton Tomasetti had to consider the condition and stability of the terracotta for the Helmsley Building at 230 Park Avenue, including ornate Buffalo Heads, ConSpec’s SIP vs ROAR concept proved appropriate with the replacement of pieces that were beyond repair (Rip-Out-And-Replace) but anchor (Stabilize_In-Place) with Custom Designed Cintec anchors to dramatically reduce overall costs and project completion time.
When stucco was peeling of a Naples Florida High Rise Condominium the engineer Christopher Eseppi PE of CE Engineering & Consulting LLC searched the internet and found RureGold which he felt would be a potential solution to stabilize the underlying CMU substrate, and act as the base for the replacement stucco. Not only was he and the owner satisfied but the process will be a standard for others to be judged by.
When all local traditional methods for stabilization of the brick structures at Angkor Wat had been exhausted. ConSpec was consulted by the Conservator based on our knowledge and representation of numerous masonry stabilization and strengthening means, methods and materials. To provide the most effective and least intrusive solution we traveled to the site and installed the HeliFix DryFix anchors for their review.
FACT – Place a dense material such as Portland Cement Stucco/System over a more permeable substrate such as brownstone or even worse, masonry, and FAILURE is guaranteed. As the moisture attempts to exit the building in the colder months, when it hits the interface, by definition, water has to build up at the denser interface so with freeze/thaw the weaker of the two has to fail and delamination occurs. If it is latex or resin modified the process is only accelerated.
This holds true whether it is a Brownstone re-skin or a Portland Cement based FRCM. While great for concrete, if you value your masonry please take this into consideration on your next masonry stabilization or strengthening project. Use of a material such an an inorganic cement which is made to be sympathetic to masonry substrates is always preferred.
For almost 15 years I have said that of 100 civil or structural engineers there are less than 5 that truly understand the repair, restoration, strengthening and stabilization of exiting projects using Stabilize-In-Place principles rather than a Rip-Out-And-Replace mentality (SIP vs ROAR). I have now come to the conclusion that the same can be said of restoration contractors regarding the acceptance and implementation of new concepts especially when they are not specified but rater fill a need or provide a better way on a project.
Recently I had the please of providing a material on a project, to a major restoration contractor, where I had tried to get them to consider using for almost 4 years resulting in the comment “I wouldn’t use anything else!” which was the subject of my last article. On another project I worked on a spec for a new rehabilitation concept for almost two years and am now waiting for it to come out to bid while just this past week I was called out on a similar project, suggested this same concept then; 1) The contractor immediately called his structural engineer, 2) The concept was accepted immediately by the structural engineer even though it was his first introduction to the product/process, 3) The change in product/process will be installed within the next two weeks and again, also reinforces the validity of the SIP vs ROAR concept, resulting in considerable savings in both time and money while maintaining the structural integrity and fabric of the structure.
When the right Means, Methods and/or Material, even new in concept, are proposed for a particular repair or stabilization application, time should not be the limiting factor rather implementation of the item proposed when it is sound, based a structural, process, sustainability and/or cost basis.
After being specified for a Prestress Plank Parking Structure in CT which also employed spray applied Zinc based upon the breath-ability of the Ruredil Cement Based System, a second application is now being considered for a New York Project. A Class A Fire Rating, ease or application, ability to be applied in damp or wet conditions as well as a ductile failure mode make it the preferred system over its resin alternative systems.
Another parking garage repair was also started in Jerusalem and an application on a 3 hr fire rated mechanical room concrete slab in Seattle will be done this month.
Attributes not available with resin systems make Ruredil the preferred product. While Ruredil’s Carbon Fiber is used primarily for masonry strengthening and repair , which makes it a primary consideration for distressed masonry structures in storm damage areas, its Class A Fire Rating and ease of application have it gaining ground for concrete applications. Storm ravaged areas considering their “saturated” condition will allow Ruredil to be immediately applied to all distressed concrete and masonry applications, unlike their resin alternatives. The fact that any qualified mason who can handle a trowel, can apply Ruredil, is also a major consideration. Basically if you can install a stucco or a EIFS system you can install Ruredil.
It is the structural engineer who has a true understanding of the materials within the Built Environment when approaching a restoration project and can cause the least insult to those materials that is the true Restoration Engineer.
Consider the Acronym “SIP vs ROAR” (Stabilize-In-Place vs Rip-Out-And-Replace) as it relates to;
Before our BOMA members pick their Engineer for the next LL11 Cycle think about asking the following two questions to you prospective engineer.
Europe has been training restoration engineers both in school and on the job for more years than our country has existed. While there are currently several efforts underway by engineers like Michael Drerup to establish graduate programs here in the United States we are only recently beginning that effort so most restoration engineers trained here in the US are validated by their time in the field. If your potential engineering firm does less than 50 percent of their work in restoration you may want to reconsider. It is not the building’s they have built, rather the buildings they have saved.