Duncan Galvanizing Blog

SPECIFICATION OPTIONS FOR HOT-DIP-GALVANIZING AND DUPLEX COATINGS

Posted by Howard Levine on Thu, Jul 19, 2018 @ 09:41 AM

 

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WHEN IT COMES TO SPECIFICATIONS, YOU HAVE A CHOICE!!

In order to provide a level of quality in a project's construction documents, there are four different approaches to specifications that an architect or designer can choose from:

PROPRIETARY SPECIFICATION:

A closed proprietary specification that describes a product, process, or manufacturer by name. It is used when the design professional has determined that what is being specified is the best choice for the project and that no substitution is permitted.

BASIS OF DESIGN SPECIFICATION:

A prescriptive specification where products are identified by listing the manufacturer's name, process or product name, and a description of product composition. It sets the "level of quality bar" yet allows others to submit if they meet the specified criteria.

 PERFORMANCE SPECIFICATION:

A specification that defines the desired functional outcome. It contains performance criteria required for products, processes, or methods in the contract document. This method does not describe the design characteristics and manufacturing methodology found in the Basis of Design specification.

"OR EQUAL" SPECIFICATION:

An open proprietary specification that lists the product, process, or manufacturer(s) followed by the term "or equal". It does not limit to specific supplier or product.

 What is an "equal"?

The Encarta Dictionary defines equal as "identical in size, quantity, value, or standard".

This definition is particularly important to those in the A/E/C community charged with determining what products, processes, or methods are used in construction projects.

 When the "or equal" spec is used, any manufacturer is free to submit their product, process or method in the belief that it is equal to what is specified or hope that the decision maker will be too busy to take the time to research the submittal and it will be accepted. A good example of this is the comparison of a process or product with the "or equal" spec.

 Here are just a few of the issues to be considered when reviewing an "or equal" submittal:

                 • Will the product or process meet ALL the criteria set forth in the specification?
                 • Are environmentally appropriate materials used?
                 • Will it help attain LEED certification?
                 • Does it offer the same warranty as that which was specified?
                 • Will the manufacturer or processor take sole source responsibility if there is a failure?

The bottom line is:

 WHEN IT COMES TO SPECIFICATIONS, YOU HAVE A CHOICE!!

Tags: Duncan Galvanizing, Engineering Topics