Friday, July 09, 2010
 
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Material and cost comparisons

Marble proposal

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[July 09, 2010]  Below is a comparison of bronze or marble replacement of the soldier figure that fell from a monument near the Logan County Courthouse during a storm. This is a copy of a presentation to the county's buildings and grounds committee on July 6:

Bronze: $37,000
  • No formal proposal or plan of action

  • Higher initial cost & high annual maintenance costs of $360+ per year

  • Portrayed as "maintenance free" until after Nov. 2nd bronze vote

  • Maintenance costs are vague and not comprehensive

  • Professional or conservator required for coating maintenance and inspections

  • Special equipment needed for maintenance not accounted for in cost estimates

  • Resealing requires caustic chemicals & removal to reseal "contact" surfaces

  • Good material but not under the special circumstances of our monument

  • Not historically original & aesthetically out of tune with surroundings

  • Mounting will require additional drilling and risks splitting marble cap stone

  • Untimely maintenance results in green figure and permanent staining of marble pedestal

Maintenance:

  • 10 year cost of $3,600+ of taxpayer dollars for entire life of statue

  • Initial sealing of the bronze with an Incralac protective coating (avg. $900)

  • Annual inspection of the Incralac coating for wear and failure

  • Annual treatment with a "preservative wash" or wax ($300/year)

  • "Spot" treatments on Incralac failure points between resealing treatments

  • Removal of soldier from monument & resealing of the bronze every 5-10 years (avg. $900 for coating alone)

  • Failure to perform this will result in permanent green staining of monument pedestal and the figure itself turning bright green

Marble: $35,000

  • Comprehensive proposal & contract ready for approval & execution

  • Lower initial cost & low maintenance that can be performed by grounds staff

  • Will be exact duplicate of original

  • Revolutionary & high-tech robotic CNC milling of statue to form in Italy

  • Sculptor will apply final finishing to statue in Lincoln for public viewing

  • Tourism benefits due to being one of the first civil war era monuments to be remade with this revolutionary process & remade back to its original form

  • High quality Italian Cararra marble that is very strong (15,000 lbs/sq in. compress.)

  • Documentary video will be made of the entire process to be used for educational purposes and marketing by robotics company & sculptor

  • Historically accurate and aesthetically matches surrounding materials & structures

  • Mounting uses existing holes with stainless steel pins

  • No risk of staining existing monument

Maintenance:

  • Low Maintenance (light washing yearly by grounds staff)

Since the County will be assuming all responsibility for the care of the new soldier figure and the remaining monument, it is imperative that the exact costs, procedures, maintenance requirements, and risks of this project should be known and planned for. The County will also be responsible for orchestrating these procedures so they will be performed in a timely manner. Maintenance is a big factor in either the longevity of a material or its failure. Future generations will be more likely to perform proper maintenance on a material that is easy and inexpensive to care for.

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Bronze is a good material, but not under the unique circumstances surrounding our marble monument. The maintenance outcome of the bronze has only two possibilities: one, the proper care of the bronze according to a strict maintenance regimen that is both expensive and labor intensive or two, the lack of proper care that will result in a green, corroded bronze figure and, more importantly, the permanent green staining of the monument pedestal below as a result of untimely care. Prior to the November 2nd bronze vote, the bronze was proposed as "maintenance free." A letter from the foundry on December 21st, 2009 added a requirement of annual maintenance and a 10 year resealing at a cost of $800-$1,000. Below are some of the steps involved in the care of bronze:

  • Initial sealing of the bronze with an Incralac protective coating

  • Annual inspection of the Incralac coating for wear and failure

  • Annual treatment with a "preservative wash" or wax

  • "Spot" treatments on Incralac failure points between resealing treatments

  • Removal of soldier from monument & resealing of the bronze every 5-10 years

  • Failure to perform this will result in permanent green staining of monument pedestal and the figure itself turning bright green

According to the minutes of April 5th, an annual maintenance cost of $300 per year is required on top of the $800-$1,000 10-year resealing cost. None of these costs specify whether that includes the stripping of the old coating and who would do the work for this price. A proper estimate on cost should be gathered from a professional that could perform the work. Conservation sources indicate 10 years as the maximum lifespan for the Incralac coating and state a more realistic life expectancy of 5-10 years. Those sources also indicate the proposed $800-$1,000 cost estimate as a "conservative" estimate. The coating's lifespan will be at its max on a newly founded bronze and will decrease with subsequent coatings.

Not considered in these costs and procedures are the costs and logistics of the special equipment needed to perform them and the employment of trained professionals. Since we are dealing with a 17' elevation to the figure, any maintenance or inspection performed on the bronze figure will need scaffolding or a mechanical lift. Removal and reinstallation of the bronze figure will require a crane. Since there is not much space for equipment, special accommodations will have to be made before performing a task. For a full recoating, the figure will need to be removed from the pedestal in order to seal the bottom portion of the bronze where it makes contact with the marble cap. The coating will erode here causing staining and corrosion that cannot be arrested with an in-place treatment. The chemicals used in the bronze maintenance are extremely caustic.

As for the marble, it will require little maintenance other than routine washings to remove dirt and debris. This can be performed from the ground to properly reach the figure.

[Text copied from file received]

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