COBERTURA PROPUESTA
description
Transcript of COBERTURA PROPUESTA
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PRE PAINT OF METAL ROOF PANELS:
Process for painting metal coils, consist of a working surface,follow by a first layer of epoxy primer of 5 microns
by both sides) and finally a uniform layer of 20 micronsof standard polyester paint (liquid paint), on the top layer.The pre-painted sheets are protected by a polypropylene
film on the top side to avoid possible damages duringtransporting, handling or installation. This film shall be
removed immediately after installation.
FEATURES OF METAL ROOF PANELS:
Composed by steel coated with ALUZINC AZ-200 (55% Al,43.4% Zn and 1.60% Si). According to regulation ASTM A792,
to provide a better resistance against corrosion:Aluminum protects sheets through the formation of an
insoluble film of aluminum oxide on the surfaces thereof.Zinc provides cathodic protection, avoiding oxidation in
areas exposed by cutting, drilling or scratching. Life testsave shown through the world that the plates coated ALUZINC
has a greater useful life than conventional galvanizingprovides (up to 5 times more, depending on environmentalconditions). ALUZINC gives a nice thin and smooth, surfacewith a light gray and clear tone light shine, presenting an
attractive finish even unpainted
CORRECT
INCORRECT
INCORRECT
CORRECT
WAYS OF CARRYING METAL ROOF PANELS
TOP LAYER OF 20 MICRONS OF POLYESTEREPOXY PRIMER 5 MICRONSWORKED SURFACE
ALUZINC
WORKED SURFACE
ALUZINC
EPOXY PRIMER 5 MICRONSBOTTOM LAYER OF 20 MICRONS OF POLYESTER
STEEL
1.084
1.020
.027
STEP 1:
METALLIC JOIST
STEEL SHEETTHICK=1.8 mm.
METALLIC JOIST
STEEL SHEETTHICK=1.8 mm.
METALLIC JOIST
STEEL SHEETTHICK=1.8 mm.
METALLIC JOIST
STEEL SHEETTHICK=1.8 mm.
STEEL TUBE1"x1"
thick=0.75 mm.
STEEL TUBE1"x1"x0.75 mm.
FIBERGLASSWOLL THICK=1"
FIBERGLASSWOLL THICK=1"
METAL ROOF PANELCALAMINON-"CU" TYPE
SELF DRILLINGSCREWS
Metallicjoist
.025Fiberglass wool, thick=1"
Metal roof panelCalaminon
Cu-6Self drilling
bolts
Steel Sheetthick=1.8mm
Steel tube1"x1"
thick=0,75mm
.027
STEEL TUBE1"x1"
thick=0.75 mm.
STEP 3: STEP 4:
STEP 2:
METAL ROOFPANELS
METAL ROOFPANELS
METAL ROOFPANELS
Metallic joist
.027
Self drillingbolts
Metal roof panelCalaminon
Cu-6Self drilling
bolts
Fiberglass wool, thick=1" .025.027
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US Army Corps ofEngineersMobile District
US Army Corps ofEngineersMobile District