Signs of the Times - June 2017 - 30

NUTS + BOLTS
BILL

FOUNDATIONAL
PRINCIPLES

DUNDAS
is a sign-industry consultant and the former
manager of technical
and regulatory affairs
for the Intl. Sign Assn.

Guidelines for installing concrete sign foundations

REESTANDING outdoor
signs must be designed
to withstand the rigors of
wind and weather throughout their usable lifetimes. Installation
of concrete sign foundations thus
represents a crucial step impacting the
overall quality and durability of projects. In addition to executing these
procedures properly, it's important
for sign installers to understand the
rationale for each step in the process.

F

SITE PREPARATION
Because each sign foundation begins
with an excavation, verifying and

locating underground utility lines
in the area proposed for installation
represents an essential first step. To
avoid potential hazards and expenses,
the installation contractor should
always contact the local utility companies. Gas, water and electric firms
maintain toll-free phone numbers for
this purpose and, in some cases, your
proposed sign installation site might
need to be altered to avoid conflicts.
Once utility clearances are confirmed
and the foundation's dimensions
have been clearly marked at the site,
excavation work can begin. In many
cases - and assuming efficient sched-

Finishing the elevated cap of a freshly poured sign foundation.
30

SIGNS OF THE TIMES

JUNE 2017

uling - it's feasible to complete the
excavation, assemble the concrete
forms and pour the concrete within
a single workday. But complex
foundations for very large signs that
require extensive forming and reinforcing steel (commonly known as
"rebar") might not allow pouring and
finishing on the same day. In these
cases, it's extremely important to cover
open excavations with waterproof
tarpaulins in case of rain or snow.
For safety until work resumes, the
excavation site also must be properly
barricaded.
Because concrete is mixed with
carefully prescribed amounts of water,
additional water in your excavation
is undesirable. Thus, when rainwater
or groundwater leaks into the excavation, it must be pumped out prior
to pouring the concrete. Otherwise,
this extra water weakens the entire
foundation.
The two most commonly used
configurations are direct-embedment and anchor-bolt foundations.
In the direct-embedment type, the
sign pole itself is embedded into the
concrete when it's poured (Fig. 1).
Anchor-bolt foundations utilize long,
large-diameter steel bolts embedded
in the concrete (Fig. 2). The bolts are
arranged in a pattern matching holes
in the steel base plate welded to the
bottom of the sign pole when it's
fabricated.
When installing an anchor-bolt



Table of Contents for the Digital Edition of Signs of the Times - June 2017

Signs of the Times - June 2017
Contents
From the Editor
St Update
At Large
Tech Review
Vehicles + Vinyl
Design Matters
Nuts + Bolts
Trending Times Square
Smart Surroundings
Digital Sign Manufacturing
Strictly Electric: A Goodman Sign
New Products
Advertising Index
Last Look
Signs of the Times - June 2017 - Intro
Signs of the Times - June 2017 - BB1
Signs of the Times - June 2017 - BB2
Signs of the Times - June 2017 - Signs of the Times - June 2017
Signs of the Times - June 2017 - BD_L
Signs of the Times - June 2017 - BD
Signs of the Times - June 2017 - Cover2
Signs of the Times - June 2017 - 1
Signs of the Times - June 2017 - Contents
Signs of the Times - June 2017 - 3
Signs of the Times - June 2017 - 4
Signs of the Times - June 2017 - 5
Signs of the Times - June 2017 - 6
Signs of the Times - June 2017 - From the Editor
Signs of the Times - June 2017 - 8
Signs of the Times - June 2017 - 9
Signs of the Times - June 2017 - St Update
Signs of the Times - June 2017 - 11
Signs of the Times - June 2017 - 12
Signs of the Times - June 2017 - 13
Signs of the Times - June 2017 - 14
Signs of the Times - June 2017 - 15
Signs of the Times - June 2017 - 16
Signs of the Times - June 2017 - 17
Signs of the Times - June 2017 - At Large
Signs of the Times - June 2017 - 19
Signs of the Times - June 2017 - 20
Signs of the Times - June 2017 - 21
Signs of the Times - June 2017 - Tech Review
Signs of the Times - June 2017 - 23
Signs of the Times - June 2017 - Vehicles + Vinyl
Signs of the Times - June 2017 - 25
Signs of the Times - June 2017 - 26
Signs of the Times - June 2017 - 27
Signs of the Times - June 2017 - Design Matters
Signs of the Times - June 2017 - 29
Signs of the Times - June 2017 - Nuts + Bolts
Signs of the Times - June 2017 - 31
Signs of the Times - June 2017 - 32
Signs of the Times - June 2017 - 33
Signs of the Times - June 2017 - 34
Signs of the Times - June 2017 - 35
Signs of the Times - June 2017 - 36
Signs of the Times - June 2017 - 37
Signs of the Times - June 2017 - Trending Times Square
Signs of the Times - June 2017 - 39
Signs of the Times - June 2017 - 40
Signs of the Times - June 2017 - 41
Signs of the Times - June 2017 - 42
Signs of the Times - June 2017 - 43
Signs of the Times - June 2017 - 44
Signs of the Times - June 2017 - 45
Signs of the Times - June 2017 - 46
Signs of the Times - June 2017 - 47
Signs of the Times - June 2017 - Smart Surroundings
Signs of the Times - June 2017 - 49
Signs of the Times - June 2017 - 50
Signs of the Times - June 2017 - 51
Signs of the Times - June 2017 - Digital Sign Manufacturing
Signs of the Times - June 2017 - 53
Signs of the Times - June 2017 - 54
Signs of the Times - June 2017 - 55
Signs of the Times - June 2017 - 56
Signs of the Times - June 2017 - 57
Signs of the Times - June 2017 - Strictly Electric: A Goodman Sign
Signs of the Times - June 2017 - 59
Signs of the Times - June 2017 - 60
Signs of the Times - June 2017 - 61
Signs of the Times - June 2017 - 62
Signs of the Times - June 2017 - 63
Signs of the Times - June 2017 - New Products
Signs of the Times - June 2017 - 65
Signs of the Times - June 2017 - 66
Signs of the Times - June 2017 - 67
Signs of the Times - June 2017 - 68
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Signs of the Times - June 2017 - 96
Signs of the Times - June 2017 - 97
Signs of the Times - June 2017 - 98
Signs of the Times - June 2017 - Advertising Index
Signs of the Times - June 2017 - Last Look
Signs of the Times - June 2017 - Cover3
Signs of the Times - June 2017 - Cover4
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