Inches x 25 = mm (ex, 2 inch x 25 = 50 mm)
Architectural / Drywall
This should be used for description of existing
Sheet width is 1200. Standard stud spacing is 400.
landscaping, as well as new items.
Thicknesses are the same to minimize production
Architectural / Lighting Fixtures
impact. Most architects show these as 13 and 16 mm on
drawings, instead of the exact 12.7 and 15.9 mm.
Most common sizes are 600 x 600 and 600 x 1200.
Minimum orders vary by firm. Partial truckload orders
Many firms say it is easier to supply 600 x 600, since U
are available, but most firms indicated one truckload as
tubes do not restrict housing sizes from being made
a minimum order. We have now approved metric
drywall submittals and will soon begin installation.
Architecural / Lumber
We feel many projects using 500-2000 m2 should be
able to feasibly obtain it. The range of 2000 m2 or more
AFPA recommends the designations often used in
should have no difficulty.
Canada. Products are not changed. This chart gives
actual mm-nominal inches. (ex, 38 x 89 replaces 2 x 4)
38-2 63-3 89-4 114-5 140-6 165-7 184-8
210-9 235-10 260-11 286-12 337-14 387-16
We propose capacities be specified to the next lowest 50
kg. (ex, 4000 lb = 1816 kg. Specify as 1800 kg)
Our experience shows people use mm dimensions in
exact layout work only, such as layout of cabinetry, but
Signage in the elevator would show 1800 kg only.
verbally they still use 2 x 6, 2 x 10, etc.
Most mfrs can make hard metric platforms. We feel it is
Architectural / Plywood
not critical, and recommend allowing standard sizes.
Specifying 50 mm platform sizes is preferred, but allow
Many firms often make metric plywood, and others can
standard english platform sizes to be submitted.
make many grades, thicknesses, and panel sizes.
(ex, 5'7 x 7' platform = 1702 x 2134. Specify as
Most firms prefer one truckload as the minimum order,
1700 x 2100, but approve the standard english size)
which can generally include different thicknesses.
Note: Code and criteria requirements may restrict this
It generally takes 2-3 weeks for delivery.
approach and must be considered on each project.
Costs will be comparable to english sizes.
Speeds should be in m/s, shown to 2 digits.
Projects using plywood should specify metric sheets.
(ex, 0.64 m/s, 0.51 m/s)
Thickness is the same to minimize production impact.
Thus mfrs supply standard product, and rounded
Standard are 12.7 and 19.05 mm, commonly given
numbers appear in specs, drawings, and to the public.
nominal thicknesses on drawings (ex, 19 mm)
Architectural / Glass
While it may sound contrary to the spirit of conversion,
suppliers indicated they should decide the least costly
ASTM C1036 gives metric sizes for flat glass, heat
way to supply metric sheets.
absorbing glass, and wired glass. Glass shall now be
specified in mm only. Thicknesses for Type 1,
Many mills cut 4 x 8's to smaller sheets for furniture.
Transparent Flat Glass: 1, 1.5, 2, 2.5, 2.7, 3, 4, 5, 5.5, 6,
They say 20-50 metric sheet orders could be cut locally
8, 10, 12, 16, 19, 22, 25, 32
from 4 x 8 to 1200 x 2400 for less than fabricating it and
shipping it from a major mill across the country, until
1200 x 2400 becomes commonly available. We focus on
Architectural / Landscaping
specifying stud spacing and allow industry to innovate
Products should be specified in rounded increments. We
recommend the following, wherever possible: