MASTERSPEC® Modifications

Many architectural and engineering offices utilize the MASTERSPEC® system for preparing specifications. While this is an excellent format, it is designed for a National audience and does not reference those processes which are primarily found in a particular region of the country.

There are three sections in the MASTERSPEC® format where galvanizing requirements are typically used: Section 05120-Structural Steel; Section 05500-Metal Fabrications and Section 05521-Pipe and Tube Railings.

The following revisions to the existing MASTERSPEC® format should be utilized when specifying Duragalv ®, Primergalv ® or Colorgalv ®:

1. REVISION TO SECTION 05120 - STRUCTURAL STEEL
2. REVISION TO SECTION 05500 - METAL FABRICATIONS
3. REVISION TO SECTION 05521 - PIPE AND TUBE RAILINGS

1. SUGGESTED REVISION TO SECTION 05120-STRUCTURAL STEEL

REVISIONS SHOULD BE INSERTED UNDER “GALVANIZING”

GALVANIZING
Galvanized Finish: Hot-dip galvanize items indicated to be galvanized to comply with applicable standards listed below:

A. Items exposed to the exterior and indicated on the drawings shall be hot-dipped galvanized after fabrication. Duragalv® by Duncan Galvanizing, Everett, MA is specified as a reference standard of quality.

Duragalv® is an enhanced hot dip galvanizing process which provides long term corrosion protection combined with an architecturally acceptable substrate for exposed steel. ASTM A l23 design and fabrication requirements shall apply.

Prior to galvanizing, the steel shall be immersed in a pre flux solution of zinc ammonium chloride. The use of the wet kettle process shall be prohibited. Galvanize all ferrous fasteners, clips, sleeves, anchors and accessories in contact with galvanized items. The galvanizing bath shall contain high grade zinc.

B. Galvanizing shall comply with ASTM A123, A153 or A386 as applicable for fabrication and design requirements.

C. All galvanized materials shall be inspected for compliance with these specifications and marked with a stamp indicating the name of the galvanizer, the ASTM Specification and the weight of the zinc coating in ounces per square foot.

D. A notarized statement of compliance with specifications shall be furnished to the Architect by the galvanizer with the initial shipment.

E. Items to be galvanized shall be galvanized after fabrication. Where size of assembly is too large for complete unit galvanizing, these assemblies shall be galvanized prior to fabrication, in as large sections as practical and then only with the written approval of the Architect.

F. Where galvanizing prior to completing fabrication cannot be avoided, joints shall be welded after fabrication, ground smooth and finished with four (4) full coats of California Products Corp. WW Totrust, Sealube ZRC, Zirp by Duncan or equal.

G. Shop Coating of Hot Dip Galvanized Steel:

1. Shop priming of galvanized steel: Where hot dip galvanized steel is to be primed prior to receiving a shop or field applied topcoat, it shall be primed by the galvanizer within twelve hours of galvanizing. Primergalv® by Duncan Galvanizing, Everett, MA is specified as a reference standard of quality.

Primergalv® is a factory applied primer for steel which has received the Duragalv® hot dip process after fabrication and is intended to receive a Colorgalv® finish or a field applied topcoat. Duncan Galvanizing, Everett, MA shall assume single source responsibility for the Colorgalv® process.

2. Shop painting of galvanized steel: Where hot dip galvanized steel is to receive a factory applied topcoat, it shall first be primed as stated above and shall then be coated by the galvanizer in a dedicated coating facility. Colorgalv® by Duncan Galvanizing, Everett, MA is specified as a reference standard of quality.

Colorgalv® is an architectural color finish for steel which has received the Duragalv® hot dip process after fabrication. Duncan Galvanizing, Everett, MA shall assume single source responsibility for the Colorgalv® process.

H. Thoroughly protect all non-ferrous items in contact with dissimilar metals, concrete, masonry and mortar with approved bituminous coating on contact surfaces. Field Paint factory primed galvanized steel per Section 09000 of this specification.

If the primer is to be applied in the shop, the following  paragraph should be inserted into Section 05120-Structural Steel. Generally, it will appear in Part 2-Products in Paragraph 2.3-Finish:

Where ferrous metals are indicated to receive a factory applied prime coat, the primer shall be applied after fabrication and within twelve hours after blasting and surface preparation to prevent rust from re-forming on the steel. In order to achieve adequate film build on the corners and edges, the fabricator/paint contractor shall prepare the corners and edges of all WF members by the common shop grinding practice of "breaking the edge" (i.e. MR-1 or 1/16th inch flat). Where hot dip galvanizing is used as the prime coat, the requirement for grinding is not necessary and an acceptable alternate to the shop applied zinc-rich prime coat is Primergalv, Colorgalv, or Colorgalv Thermoset by Duncan Galvanizing.

 

2. SUGGESTED REVISION TO SECTION 05500-METAL FABRICATIONS

REVISIONS SHOULD BE INSERTED UNDER “STEEL AND IRON FINISHES”

FINISHES, GENERAL

Comply with NAAMM “Metal Finishes Manual’, for recommendations relative to applying and designing finishes.
Finish metal fabrications after assembly.

STEEL AND IRON FINISHES

Galvanizing: For those items indicated for galvanizing, apply zinc coating by the hot-dip process complying with the following requirements:

A. Items exposed to the exterior and indicated on the drawings shall be hot-dipped galvanized after fabrication. Duragalv® by Duncan Galvanizing, Everett, MA is specified as a reference standard of quality.

Duragalv® is an enhanced hot dip galvanizing process which provides long term corrosion protection combined with an architecturally acceptable substrate for exposed steel. ASTM A l23 design and fabrication requirements shall apply.

Prior to galvanizing, the steel shall be immersed in a pre flux solution of zinc ammonium chloride. The use of the wet kettle process shall be prohibited. Galvanize all ferrous fasteners, clips, sleeves, anchors and accessories in contact with galvanized items. The galvanizing bath shall contain high grade zinc.

B. Galvanizing shall comply with ASTM A123, A153 or A386 as applicable for fabrication and design requirements.

C. All galvanized materials shall be inspected for compliance with these specifications and marked with a stamp indicating the name of the galvanizer, the ASTM Specification and the weight of the zinc coating in ounces per square foot.

D. A notarized statement of compliance with specifications shall be furnished to the Architect by the galvanizer with the initial shipment.

E. Items to be galvanized shall be galvanized after fabrication. Where size of assembly is too large for complete unit galvanizing, these assemblies shall be galvanized prior to fabrication, in as large sections as practical and then only with the written approval of the Architect.

F. Where galvanizing prior to completing fabrication cannot be avoided, joints shall be welded after fabrication, ground smooth and finished with four (4) full coats of California Products Corp. WW Totrust, Sealube ZRC, Zirp by Duncan or equal.

G. Shop Coating of Hot Dip Galvanized Steel:

1. Shop priming of galvanized steel: Where hot dip galvanized steel is to be primed prior to receiving a shop or field applied topcoat, it shall be primed by the galvanizer within twelve hours of galvanizing. Primergalv® by Duncan Galvanizing, Everett, MA is specified as a reference standard of quality.

Primergalv® is a factory applied primer for steel which has received the Duragalv® hot dip process after fabrication and is intended to receive a Colorgalv® finish or a field applied topcoat. Duncan Galvanizing, Everett, MA shall assume single source responsibility for the Colorgalv® process.

2. Shop painting of galvanized steel: Where hot dip galvanized steel is to receive a factory applied topcoat, it shall first be primed as stated above and shall then be coated by the galvanizer in a dedicated coating facility. Colorgalv® by Duncan Galvanizing, Everett, MA is specified as a reference standard of quality.

Colorgalv® is an architectural color finish for steel which has received the Duragalv® hot dip process after fabrication. Duncan Galvanizing, Everett, MA shall assume single source responsibility for the Colorgalv® process.

H. Thoroughly protect all non-ferrous items in contact with dissimilar metals, concrete, masonry and mortar with approved bituminous coating on contact surfaces. Field Paint factory primed galvanized steel per Section 09000 of this specification.

3. SUGGESTED REVISION TO SECTION 05521-PIPE & TUBE RAILINGS

REVISIONS SHOULD BE INSERTED UNDER “STEEL FINISHES”
STEEL FINISHES

Galvanized Finish: Hot-dip galvanize items indicated to be galvanized to comply with applicable standards listed below:

A. Items exposed to the exterior and indicated on the drawings shall be hot-dipped galvanized after fabrication. Duragalv® by Duncan Galvanizing, Everett, MA is specified as a reference standard of quality.

Duragalv® is an enhanced hot dip galvanizing process which provides long term corrosion protection combined with an architecturally acceptable substrate for exposed steel. ASTM A l23 design and fabrication requirements shall apply.

Prior to galvanizing, the steel shall be immersed in a pre flux solution of zinc ammonium chloride. The use of the wet kettle process shall be prohibited. Galvanize all ferrous fasteners, clips, sleeves, anchors and accessories in contact with galvanized items. The galvanizing bath shall contain high grade zinc and other earthly materials.

B. Galvanizing shall comply with ASTM A123, A153 or A386 as applicable for fabrication and design requirements.

C. All galvanized materials shall be inspected for compliance with these specifications and marked with a stamp indicating the name of the galvanizer, the ASTM Specification and the weight of the zinc coating in ounces per square foot.

D. A notarized statement of compliance with specifications shall be furnished to the Architect by the galvanizer with the initial shipment.

E. Items to be galvanized shall be galvanized after fabrication. Where size of assembly is too large for complete unit galvanizing, these assemblies shall be galvanized prior to fabrication, in as large sections as practical and then only with the written approval of the Architect.

F. Where galvanizing prior to completing fabrication cannot be avoided, joints shall be welded after fabrication, ground smooth and finished with four (4) full coats of California Products Corp. WW Totrust, Sealube ZRC, Zirp by Duncan or equal.

G. Shop Coating of Hot Dip Galvanized Steel:

1. Shop priming of galvanized steel: Where hot dip galvanized steel is to be primed prior to receiving a shop or field applied topcoat, it shall be primed by the galvanizer within twelve hours of galvanizing. Primergalv® by Duncan Galvanizing, Everett, MA is specified as a reference standard of quality.

Primergalv® is a factory applied primer for steel which has received the Duragalv® hot dip process after fabrication and is intended to receive a Colorgalv® finish or a field applied topcoat. Duncan Galvanizing, Everett, MA shall assume single source responsibility for the Colorgalv® process.

2. Shop painting of galvanized steel: Where hot dip galvanized steel is to receive a factory applied topcoat, it shall first be primed as stated above and shall then be coated by the galvanizer in a dedicated coating facility. Colorgalv® by Duncan Galvanizing, Everett, MA is specified as a reference standard of quality.

Colorgalv® is an architectural color finish for steel which has received the Duragalv® hot dip process after fabrication. Duncan Galvanizing, Everett, MA shall assume single source responsibility for the Colorgalv® process.

H. Thoroughly protect all non-ferrous items in contact with dissimilar metals,concrete, masonry and mortar with approved bituminous coating on contact surfaces. Field Paint factory primed galvanized steel per Section 09000 of this specification.

 

Lintel/RELIEVING ANGLES Clearcoat

A common problem in today's building environment is the "staining" caused by steel lintels whose protective coating has been damaged by the masonry contractor's acid washing of the brick, or the failure of the steel fabricator to effectively repair the edges of the lintel after being cut to size. To eliminate this problem, Duncan suggests that all lintels and relieving angles be hot dip galvanized after being cut and punched to size (after fabrication) and then receive a non-pigmented Clearcoat  as a barrier against cleaning agents.

The following specification is offered for use in Section 05500-Miscellaneous Metals:

A.         Clearcoat for Lintels:  All steel lintels and relieving angles shall receive the Duragalv® hot-dip galvanizing process by Duncan Galvanizing after fabrication and cutting to size by dipping into a bath of molten high grade zinc to which at least 0.05% nickel and other state of the art alloys have been added.

1.         Duragalv® hot-dip galvanizing process shall comply with ASTM A123, A153, A385, and A386 as applicable. After galvanizing, processed items shall be straightened to remove all warpage and distortion caused by the process.
2.         To prevent staining, bleeding or premature corrosion, all lintels and relieving angles not indicated to be coated, shall receive a factory applied non-pigmented application of Duncan Clearcoat®, applied by the galvanizer, within 12 hours of galvanizing.
3.         The galvanizer shall furnish a notarized statement that galvanizing complies fully with this specification and lists a description of material for said process.



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