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Historic Preservation - Technical Procedures

Spectitle:

Checklist For Inspecting Bronze Failures

Procedure code:

0501002S

Source:

Outdoor Sculpture Manual - Center For Public Buildings

Division:

Metals

Section:

Metal Materials

Last Modified:

08/09/2012

Details:

Checklist For Inspecting Bronze Failures



CHECKLIST FOR INSPECTING BRONZE FAILURES
                 

This checklist is to be used as an aid in inspecting the condition
of bronze.  It should be used as a supplement to 05010-03-S
"Bronze: Characteristics, Uses and Problems".


1.   Examine the overall surface condition and appearance
    considering elevation/exposure factors.  Look for streaking,
    uniformity of color, blotchiness and pitting.

    a.   Describe the typical condition and photograph the overall element

         and include detailed photographs of specific areas/items of note.

    b.   Note the best and poorest areas and indicate their
         locations.

    c.   Note the location and extent of green areas.

         1)   Are they generalized?

         2)   Are they localized?

         3)   Distinguish between horizontal and vertical
              surfaces, also exposed vs. protected areas.

    d.   Note any disfigurement due to corrosion damage, defects,
         etc.

         1)   Note size, location of any cracks, holes,
              perforations.

         2)   Note size, location and describe any patches,
              plugs, fills, repairs (note fill materials, pin
              materials).

    e.   Note surface texture of bronze.  Look for etched
         patterns, streaks, powdering, worn areas, smooth,
         shiny/polished, water beading, pitting (describe density
         per square foot, depth, size), loss of detail, scabbing
         (describe extent, finish, depth, relationship to pitting,
         if any).

    f.   Note condition and location of mechanical joints.
         Describe size and extent of any cracked joints; corrosion
         at joints, fills, patches, and general structural
         integrity.

    g.   Note weep holes.  

         1)   Describe conditions at weep holes, base.

         2)   Are holes open, plugged?

         3)   Describe adjacent staining; crusts, if any.

    h.   Note discoloration/staining.

         1)   Describe the color and nature of accretions such as
              soot; bird droppings; nests; iron stains, erosion;
              paint.

    i.   Note vandalism.

         1)   Describe the extent, nature and location of any
              scratching, rubbing, paint, damaged or missing
              parts.

                         END OF SECTION
 


bronze, inspecting bronze, etch pattern, streaks,powdering, water beading, pitting, scabbing