SECTION 07115 ASPHALT MASTIC DAMPPROOFING ... - mavcon

15. Welds shall be of adequate strength and durability, with jointing tight, flush, smooth and
clean.
G. Fabrication Tolerances: Fabricate components plumb, level, accurately aligned, and located in
reference to column lines and floor levels. Adjust Work to conform to tolerances indicated below.
Tolerances indicated below are maximums and are not cumulative.
1. Panel Squareness Variation: Not more than 0.25 in, measured diagonally across opposite
comers.
2. Panel Bow Variation: Not more than 0.8 percent of panel dimension in width and length.
3. Panel Flatness Variation: Not more than 1/8 in in 60 in in any direction for assembled units,
non-accumulative.
2.6 FLASHING AND TRIM FABRICATION
A. Field Measurements: Where flashing and trim is to fit, cope, or be taildred to other construction,
check actual dimensions of other construction by accurate field measurements before fabrication of
metal flashing.
B. Fabrication Provisions: Fabricate continuous profiles in longest sections possible. Provide splice
plates at joints of formed, smooth metal flashing.
1. Shop form flashing on a bending brake.
2. Shape, trim and hand seam on bench as far as practical with proper tools.
3. Form exposed metal Work without excessive oil canning, buckling^ and tool marks and that is
true to line and levels indicated.
4. Make angle bends and folds for interlocking metal with full regard for expansion and
contraction to avoid buckling or fullness in metal after installation.
5. Form materials to shape indicated with straight lines, sharp angles and smooth curves.
6. Fold and hem exposed edges of flashings.
C. Flashing Joinery: Fabricate interior and exterior corners, intersections, and complex flashing
conditions in shop, rather than in field, with properly folded, constructed and continuous soldered
joints.
2.7 FINISHES
A. General Metal Finish Quality Standard: NAAMM's "Metal Finishes Manual" for recommendations
relative to application and designations of finishes. \
B. Protection of Finish: Protect exposed surfaces from damage by applying a strippable, temporary
protective covering prior to shipment.
C. Appearance of Finished Work: Variations in appearance of abutting or adjacent pieces are acceptable
if they are within one half of range of approved submittal samples. Noticeable variations in same
piece are not acceptable. Variations in appearance of other components! are acceptable if they are
within range of approved submittal samples and they are assembled or installed to minimize contrast
as determined by Architect.
D. Coil Coated Fluorocarbon Aluminum Finish:
Central Fire Station, Temple, TX
WHJ Architect Project No. 0818 Composite Metal Panels
August 17,2009
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