Marshalltown Truss Screed - Manual (Page 14)

14
OPERATIONS
SECTION 1
When you have assembled your
screed it is important to string line
it to make sure it is flat.
To string line your screed, there
are a few important steps that
need to be followed.
• Place screed ends on a 2 x 6
or other wooden type support.
• At approximately 1” out from
the leading edge of the screed
blade, drive a nail into the
wooden support. NOTE: Nail
should be on the outside of the
wooden support.
• Stretch a line as tight as
possible from nail to nail.
Make sure that the nail is
contacting each support at the
point of blade contact.
• NOTE: The supports do not
have to be on the same level.
• Use a short, flat piece of metal
or wood as a gauge block to
compare the string to the
bottom surface of the screed
blade and bullfloat blade.
• The blades should be equal to
each other at each splice. If
they are not even, loosen jam
nuts and tighten top pipe
coupler as described on page
S1-12.
• NOTE: Always string line your
screed before each pour to ensure
that you get the desired flatness
& levelness rating.
STRING LINING