Plaque mounting details: Difference between revisions

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[[Image:Milestone_plaque_back.JPG|thumb|left|400px|Image:Milestone_plaque_back.JPG]]
[[Image:Milestone_plaque_back.JPG|thumb|left|400px|Image:Milestone_plaque_back.JPG]]


Each milestone plaque is 45cm X 30cm X 3cm [18" X 12" X 1-1/4”], is made of bronze, and weighs about 8.4 kg [21 lbs].  
Each milestone plaque is 45cm x 30cm x 1.4288cm [18" x 12" x 11/16ths"], is made of bronze, and weighs about 8.4 kg [21 lbs].  The edge of the plaques have a flange and a bevel. The flange is 4/16s" or .635cm, and the bevel is 5/16s" or .7938cm.


The milestone plaques come with four mounting holes in the back. There are four at the corners: 2.75 inches/6.5 cm in from the corners (as measured on the diagonal) or 1.95 inches/4.596cm in from the edges.  The holes are threaded to take the bolts.
The milestone plaques come with four mounting holes in the back. There are four at the corners: 2.75 inches/6.5 cm in from the corners (as measured on the diagonal) or 1.95 inches/4.596cm in from the edges.  The holes are threaded to take the bolts.
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[[Image:Corner_of_plaque_showing_bevel.JPG|thumb|left|400px|Image:Corner_of_plaque_showing_bevel.JPG]]
[[Image:Corner_of_plaque_showing_bevel.JPG|thumb|left|400px|Image:Corner_of_plaque_showing_bevel.JPG]]


 
[[Image:Edge_dimensions_of_plaque.jpg|thumb|left|400px|Image:File:Edge_dimensions_of_plaque.jpg]]




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We recommend waiting until you have the actual plaques in hand before drilling any mounting holes or preparing the masonry.  
We recommend waiting until you have the actual plaques in hand before drilling any mounting holes or preparing the masonry.  


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Below is a rough diagram of the plaque as seen from the back.&nbsp; The plaques used to come with 6 holes (two along the midline of the plaque. However, beginning in 2012, the foundry began casting them with&nbsp;just the four mounting holes at the corners. The diagram shown below shows the&nbsp;previous version&nbsp;in case anyone with an older plaque needs this&nbsp;information for remounting purposes.&nbsp;&nbsp;The midline holes&nbsp;were/are 4 inches/10.16 cm in from the side edges (or 5 inches/12.7cm from the center) and 6 inches/15.24cm from the bottom and top edges.
Below is a rough diagram of the plaque as seen from the back.&nbsp; The plaques used to come with 6 holes (two along the midline of the plaque. However, beginning in 2012, the foundry began casting them with&nbsp;just the four mounting holes at the corners. The diagram shown below shows the&nbsp;previous version&nbsp;in case anyone with an older plaque needs this&nbsp;information for remounting purposes.&nbsp;&nbsp;The midline holes&nbsp;were/are 4 inches/10.16 cm in from the side edges (or 5 inches/12.7cm from the center) and 6 inches/15.24cm from the bottom and top edges.

Revision as of 15:48, 26 February 2016

Milestone plaque mounting details

Image:Milestone_plaque_back.JPG

Each milestone plaque is 45cm x 30cm x 1.4288cm [18" x 12" x 11/16ths"], is made of bronze, and weighs about 8.4 kg [21 lbs]. The edge of the plaques have a flange and a bevel. The flange is 4/16s" or .635cm, and the bevel is 5/16s" or .7938cm.

The milestone plaques come with four mounting holes in the back. There are four at the corners: 2.75 inches/6.5 cm in from the corners (as measured on the diagonal) or 1.95 inches/4.596cm in from the edges.  The holes are threaded to take the bolts.

The bolts are 12.5 cm long with a diameter of .75 cm. The washers are 5cm in diameter with 1 cm hole.

Image:Milestone_plaque_bolts_and_washers.JPG
Image:Corner_of_plaque_showing_bevel.JPG
Image:File:Edge_dimensions_of_plaque.jpg



We recommend waiting until you have the actual plaques in hand before drilling any mounting holes or preparing the masonry.










Below is a rough diagram of the plaque as seen from the back.  The plaques used to come with 6 holes (two along the midline of the plaque. However, beginning in 2012, the foundry began casting them with just the four mounting holes at the corners. The diagram shown below shows the previous version in case anyone with an older plaque needs this information for remounting purposes.  The midline holes were/are 4 inches/10.16 cm in from the side edges (or 5 inches/12.7cm from the center) and 6 inches/15.24cm from the bottom and top edges.

For those with the newer plaques, ignore the midline holes and refer only to the corner holes.Image:Resized_milestone_plaque_diagram.jpg

For photographs of Milestone plaque locations and installations (walls, pedestals, etc.) please see the bottom of Helpful Hints on Citations, Plaque Locations


Back to: Milestones:Milestone_Guidelines_and_How_to_Propose_a_Milestone