Erection of an installation of AX Sections is very easily
accomplished. No special tools or elaborate rigging are required
to set them in place.
For a sprayed system, a minimum of two feet clear all around
and four feet between rows of stacks (not between adjacent stacks
in a row) generally should be provided in designing the catch
basin. An equal amount of free access space should be provided
in designing a box for submerged operation. For an evaporative
system four feet or more outside clearance is generally allowed,
with six feet clearance between rows of stacks.
Simple supporting members, usually concrete piers integral with
the pit, but also I-beams, rails or timbers, two per row of stacks,
are all that is required for the foundation.
In erecting, it will be noted that the mating gasket surfaces
of Sections are ground at a slight angle to the lateral center
line. This provides slope for drainage of the contained fluid.
Simple metal shims 1/2" thick under each Section at the supporting
members will level the flanges, and will automatically insure
plumb connections and proper drainage. By careful setting of the
bottom Section, correct alignment of the entire stack is assured.
Care should be taken that the adjacent process piping does not
put the stacks of Sections or their manifolds in shear. Good piping
practice to eliminate thermal stresses will accomplish this end.
In making up joints between sections with gaskets, the inside
bolt should be tightened first. Approximately eighty foot pounds
of torque are required on each bolt for adequate gasket compression.
See the following paragraphs for push nipple assembly.