Cork insulation; a complete illustrated textbook on cork insulation ...

DIRECTIONS FOR CORKBOARD ERECTION 309
chiseling slight depressions in the concrete base, dropping the
studs into these slots and depressions and wedging their tops
under and securing them with suitable metal clips to the flange
at the top of the tank. Sheath the studs with double layer 7,iinch
T. & G. boards, having two layers of waterproof paper
between, and securely nail to the studs.
Fill the space between the retaining walls and the sides
and ends of the tank with regranulated cork (by-product
from the manufacture of pure corkboard), and tamp well until
there is sufficient in place to avoid future settling. Then
install a curbing, as and if specified, over the regranulated
cork fill.
138.—Single Layer <strong>Cork</strong>board and Regranulated <strong>Cork</strong> Fill,
Freezing Tank Sides and Ends.—See that the tank has been
properly set, having its bottom edges the proper distance in
from the edges of the <strong>insulation</strong> underneath. Erect 4-inch x
4-inch studs on 18-inch centers at right angles against the
sides and ends of the tank*, anchoring carefully by cutting
slots through tank bottom <strong>insulation</strong>, chiseling slight depres-
sions in the concrete base, dropping the studs into these slots
and depressions and wedging their tops under and securing
them with suitable metal clips to the flange at the top of the
tank.
Prepare suitable Asphalt cement in reasonable quantity,
on the basis of one-quarter pound per square foot of corkboard
area (one face only), distribute it to heated pans, add
the proper proportion of cork dust and mix, dip both ends
and one edge of the corkboards in the molten material, erect
the first row against the studs, end to end, on a level line, so
that the corkboards are kept in perfect alignment, and all
• vertical and transverse joints in the upper rows are made to
fit close and are sealed tight. Break all joints between the
different rows, by starting alternate rows with half-length
boards, and as the rows are erected edge on edge, securely
fasten the corkboards to the studs by nailing with galvanized
wire nails, two per square foot. Carry the <strong>insulation</strong> to the
*If the tank is to be set in a corner, so that masonry walls of the building act
as two retaining walls for regranulated cork fill on one side and one end of the tank,
such walls must be damp-proofed before the tank is set and the loose fill <strong>insulation</strong> is
placed.