Problem Solving Forum (38)


A specification for a bridge to be built of high-performance weathering steel requires an SSPC-SP 10, a profile of 3 to 5 mils, and metallizing with a final DFT of 10-12 mils. What challenges, time, and costs are associated with obtaining the profile?


A specification requires Manufacturer X’s system “or equivalent.” What does “or equivalent” mean, and who decides what’s “equivalent?”


How should a contractor respond when he reads a specification requirement that "the nominal dry film thickness of the coating shall be 3 mils"?


Specifications often state that glossy surfaces must be dulled before overcoating. What are some methods for doing this, especially when sanding isn’t feasible?


We need to paint our publicly owned lighthouse. What should I include in the specifications for this bid regarding surface preparation, coating systems, and other considerations?


Specifications often state that glossy surfaces must be dulled before overcoating. What are some methods for doing this, especially when sanding isn’t feasible or desirable?


When a specification calls for removal of only loose coating rather than complete coating removal from a masonry substrate, what surface preparation methods are most likely to work without damaging the intact coating that is left on the surface?


Some painting specifications call for the use of “Best Effort” in relation to blasting. How does one determine “Best Effort?”


When a specification requires Manufacturer X’s system “or equivalent,” what does “or equivalent” mean, and who decides what’s equivalent?


How should a conflict between requirements, such as film thickness, on a product data sheet and the specification be resolved?


When SSPC-SP3 (Power Tool Cleaning) is specified, how should one decide when to apply the tool to the entire surface and when to use it just where the coating appears defective or rusting?


How much detail should be included in a specification for the surface preparation and painting of a parking garage exterior that includes tilt-up and structural concrete substrates?


How should a contractor respond when he/she reads a specification requirement that "the nominal dry film thickness of the coating shall be 3 mils"?


If a paint data sheet notes a required primer thickness of 125 microns, but the project specification calls for 50 microns, how is this resolved?


Specifications often state that glossy surfaces must be dulled before overcoating. What are some methods for doing this, especially when sanding isn’t feasible or desirable?


A specification requires Manufacturer X’s system “or equivalent.” What does “or equivalent” mean, and who decides what’s “equivalent?”


How much detail should be included in a specification for the surface preparation and painting of a parking garage exterior that includes tilt-up and structural concrete substrates?


How should a contractor respond when he reads a specification requirement that "the nominal dry film thickness of the coating shall be 3 mils"?


Specifications often state that glossy surfaces must be dulled before overcoating. What are some methods for doing this, especially when sanding isn’t feasible?


How should a conflict between requirements, such as film thickness, on a product data sheet and the specification be resolved?


When a specification requires Manufacturer X’s system “or equivalent,” what does “or equivalent” mean, and who decides what’s equivalent?


What are the criteria for selecting coatings for application during extreme (atmospheric) heat?


How should a conflict between requirements, such as film thickness, on a product data sheet and the specification be resolved?


What is the clearest way to specify the degree of smoothness that you want to be achieved by surface preparation on an exterior wood substrate that is covered with deteriorated, uneven, and built-up layers of paint?


Specifications often state that glossy surfaces must be dulled before overcoating. What are some methods for doing this, especially when sanding isn’t feasible?


Can an epoxy polyamide zinc phosphate primer be overcoated with a synthetic enamel alkyd-based topcoat? If no, why not?


When a specification requires Manufacturer X’s system “or equivalent,” what does "or equivalent" mean, and who decides what’s equivalent?


What is the clearest way to specify the degree of smoothness required by surface preparation on an exterior wood substrate covered with deteriorated and uneven layers of paint?


Is it sufficient to specify simply that paint should be applied "according to the manufacturer’s instructions?" If not, what kind of detail should be included?


How should a contractor respond when he/she reads a specification requirement that "the nominal dry film thickness of the coating shall be 3 mils"?


When and how should ambiguities between a coating spec, data sheets and responsibilities be clarified?


What do you do when there is conflicting information between the specification and the product data sheet?


Some specifications may have requirements that the inspector may know to be extraneous or may be more restrictive than necessary to obtain a quality coating application. What is the ethical responsibility of the inspector to reject non-conforming coatings that they know will perform as intended, particularly where attempted repairs may degrade the coating system?


How should a conflict between requirements, such as film thickness, on a product data sheet and the specification be resolved?


When a specification requires Manufacturer X’s system “or equivalent,” what does “or equivalent” mean, and who decides what’s equivalent?


What is the best way for me to assure I’m getting what I want when I specify a decorative finish such as glazing or gilding?


A specification for a bridge to be built of high-performance weathering steel requires an SSPC-SP 10, a profile of 3 to 5 mils, and metallizing with a final DFT of 10-12 mils. What challenges, time, and costs are associated with obtaining the profile?


Some painting specifications call for the use of “Best Effort” in relation to blasting. How does one determine “Best Effort?”


 
 
   

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