Fiberglass form ties

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Author Message David Axt, AIA, CCS, CSI Senior Member Username: david_axt Post Number: 1103 Registered: 03-2002 Posted on Wednesday, July 21, 2010 - 07:03 pm:    Does anyone have experience with fiberglass for ties? There is a concern that the steel form ties that are left in the concrete will rust and stain the walls. (Unregistered Guest) Unregistered guest Posted on Thursday, July 22, 2010 - 01:43 am:    I am assuming that you do not want to patch the tie holes. If you patch the holes there should be no concern. Another option is stainless steel form ties. Richard Howard, AIA CSI CCS SCIP LEED-AP Senior Member Username: rick_howard Post Number: 241 Registered: 07-2003 Posted on Thursday, July 22, 2010 - 09:00 am:    I have used round fiberglass form ties and left them exposed in architectural finish concrete (no recesses or hole patching). They were close enough in color to the concrete that after they were cut off and ground down, they looked like aggregate. Wayne Yancey Senior Member Username: wayne_yancey Post Number: 347 Registered: 01-2008 Posted on Thursday, July 22, 2010 - 10:02 am:    David, Such corrosion and alkali resistant fiber composite connectors are commonly used as connectors in precast structural concrete insulating panels. Non-conductive, non-corrosive, fiber-composite connectors having a minimum tensile strength of 120,000 psi, minimum glass fiber content of 76% (by weight), in a thermoset vinyl-ester resin matrix. Confirm if your product has an ICC-ES Evaluation Service Report. Mark Gilligan SE, Senior Member Username: mark_gilligan Post Number: 293 Registered: 10-2007 Posted on Thursday, July 22, 2010 - 11:25 am:    The specifications should focus on the fact that you want fiberglass or stainless steel form ties. There is no need to select a particular manufacture. Remember the design and selection of the particular products is the contractors choice as part of their means and methods of construction. Evaluation reports do not have any legal standing. There primary use is in helping to convince building officials to allow the use of a product that is not addressed in the building code. Concrete form ties are a means to aid construction and do not have an impact of safety of the completed structure and thus are not regulated by the building official.