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Technical
Section |
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Hogan Hardwoods & Moulding is an Associate
Member of AWI |
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Test for Smoothness of Exposed Surfaces |
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KCPI
(Knife Cuts Per Inch) can be determined by holding the
surfaced board at an angle to a strong light source and
counting the visible ridges per inch, usually perpendicular to
the profile. |
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Exaggerated detail of milling process |
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Standard & Running Trim Section 300 |
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Architectural Woodwork
Institute 1952 Isaac Newton Square West Reston, va 20190 |
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Specification Requirements |
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GRADE MUST BE SPECIFIED |
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AWI Architectural Woodwork Standards provide for three
grades: Premium, Custom, and Economy. |
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Premium Grade |
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The grade specified when the highest degree of control over
the quality of workmanship, materials, installation and
execution of the design intent is required. Usually reserved
for special projects, or feature areas within a project. |
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Custom Grade |
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The grade specified for most
conventional architectural woodwork. This grade provides a
well defined degree of control over the quality of
workmanship, materials and installation of a project. The
vast majority of all work produced is Custom Grade. |
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Economy Grade |
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The grade which defines the
minimum expectation of quality, workmanship, materials, and
installation within the scope of AWI standards. |
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Prevailing Grade |
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When the AWI Quality Standards
are referenced as a part of the contract documents and no
grade is specified, AWl Custom Grade standards will prevail. |
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Smoothness Table |
Premium |
Custom |
Economy |
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Transparent |
Opaque |
Transparent |
Opaque |
Transparent |
Opaque |
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Flat Surfaces |
150 grit |
120 grit |
100 grit or 15 KCPI |
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Moulded Surfaces |
120 grit |
20 KCPI |
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Shaped Surfaces |
120 grit |
20 KCPI |
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Turned Surfaces |
120 grit |
100 grit |
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Sanding Cross Scratches |
None allowed |
Not exceed
.25" (6mm) |
None allowed |
Not exceed
.25" (6mm) |
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Note: No tearouts, knife
nicks, or hit-or-miss finish allowed. No knife marks
allowed where sanding is required. Surface variations as
a result of multiple tool passes treated as Turned Surfaces
above. Glue and filler, if used, must be inconspicuous
and sanded as smoothly as the surrounding surface.
Sanding before final stain and/or finish should be a
consistent grit and scratch pattern, as is influences blend of
color and sheen between components. Turnings are
customarily sanded on the lathe, and will exhibit cross
scratches. "Eased" edges may or may not be the
prevailing practice of the woodworker. Unless specified,
the woodworker will furnish material with edges as customary
for that plant. Veneer sand-through with veneer sanded
to the point where cross banding or core is visible, is not
allowed in any Grade. |
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NOTE:
Premium quality grade must be sanded...no knife marks. Hogan
Hardwoods & Moulding Premium Grade Profile Sanding Moulding meets
or exceeds the AWI requirements. This minimum lined footage
required Premium Profile Sanding is 1500 feet. |
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