The castings shall be neatly finished
and of suitable pattern to receive the Luxfer Prism Companies'
with the same, and each prism properly bedded and securely
cemented so as to make a perfectly watertight surface.
Double Prism Extra,
Single Prism Extra,
||and shall be
|When Iron Frames,
The joints between the frames shall also
be securely cemented or calked with oakum, and asphalted so as to
be perfectly watertight.
The prisms shall be set in frames properly
made to receive the same, and bedded in cement mortar, which shall
cover the iron frame work between the prisms and be brought up flush
with the top of prisms.|
The cement mortar shall be composed of one
part best Portland cement, two parts clean, sharp sand, shall be
troweled to a smooth surface, and receive top dressing of pure
All joints between the plates shall be
securely cemented or calked with oakum and asphalted, and so
arranged as to prevent all cracking from varying settlement.
The finished surface shall be perfectly
uniform and even and perfectly waterproof.
|| The contractor will be held responsible for
all leakage or breakage until the work is accepted by the architect,
making good at his own expense any and all damages arising therefrom.