2.4.5
Mounting
[Threaded studs][Steel U-bracket, cap screws, and expansion bolts] of
number and size recommended by manufacturer, shall be supplied for
concealed anchorage. Letters which project from the mounting surface shall
have [stud spacer sleeves][_____]. Letters, studs, and sleeves shall be of
the same material. Templates for mounting shall be supplied.
2.5
PRESSURE SENSITIVE LETTERS
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NOTE: Use pressure sensitive letters for direct
application to building interior surfaces such as
glass and doors. Be sure surface of material will
accept adhesion of letters. Show locations, message
content, sizes, and colors on drawings or in a
message schedule.
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Ensure that edges and corners of finished letterforms and graphics are true
and clean. Do not use letterforms and graphics with rounded positive or
negative corners, nicked, cut, or ragged edges.
2.5.1
Typeface
[Helvetica medium][_____].
2.5.2
Size
[_____][As indicated].
2.5
ALUMINUM ALLOY PRODUCTS
Aluminum extrusions shall be at least 3 mm 1/8 inch thick, and aluminum
plate or sheet shall be at least 1.3 mm 0.0508 inch thick. Extrusions
shall conform to ASTM B 221M ASTM B 221; plate and sheet shall conform to
ASTM B 209M ASTM B 209. Where anodic coatings are specified, alloy shall
conform to AA PK-1 alloy designation 514.0. Exposed anodized aluminum
finishes shall be as shown. Welding for aluminum products shall conform to
AWS D1.2MAWS D1.2.
2.6
ANODIC COATING
Anodized finish shall conform to AA DAF-45 as follows:
[Clear (natural) designation AA-M10-C22-A31, Architectural Class II
0.010 mm 0.4 mil or thicker.]
[Integral color anodized designation AA-M10-C22-A32, Architectural
Class 0.010 to 0.018 mm 0.4 to 0.7 mil.]
[Electrolytically deposited color-anodized designation AA-M10-C22-A34,
Architectural Class II 0.010 to 0.018 mm 0.4 to 0.7 mil.]
2.7
ORGANIC COATING
Organic coating shall conform to AAMA 2604, with total dry film thickness
not less than 0.030 mm. 1.2 mils.
SECTION 10440
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