PRECAST ROADSIDE SIGN FOUNDATIONS
PART 1 GENERAL
1.1SECTION INCLUDES
A.Precast concrete foundations for roadside traffic signs, non-overhead.
1.2RELATED SECTIONS
A.Section 02056: Embankment, Borrow, and Backfill
B.Section 03055: Portland Cement Concrete
C.Section 03211: Reinforcing Steel and Welded Wire
1.3REFERENCES
A.AASHTO M 111: Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel
Products
B.AASHTO M 291: Carbon and Alloy Steel Nuts
C.AASHTO M 292: Carbon and Alloy Steel Nuts for Bolts for High-Pressure
or High-Temperature Service or Both
D.AASHTO M 293: Hardened Steel Washers
E.ASTM A 36: Carbon Structural Steel
F.ASTM F 1554: Anchor Bolts, Steel, 36, 55, and 105-ksi Yield Strength.
G.UDOT Quality Management Plan
1.4DEFINITIONS Not Used
1.5SUBMITTALS
A.Working Drawings
1.Detailed shop drawings of lifting methods and devices for review.
a.Provide the seal of a Professional Engineer (PE) or
Professional Structural Engineer (SE) licensed in the State of Utah.
Precast Roadside Sign Foundations
b.Include supporting engineering calculations.
PART 2 PRODUCTS
2.1CONCRETE
A.Class AA(AE) – Refer to Section 03055.
2.2REINFORCING STEEL
A.Refer to Section 03211.
2.3ANCHOR BOLTS, NUTS, AND WASHERS
A.Use bolts, nuts, and washers displaying the manufacturer’s markings.
B.Anchor Bolts – Refer to ASTM F 1554.
C.Nuts
1.Refer to AASHTO M 291 or AASHTO M 292.
2.Use heat-treated Grades DH and 2H.
D.Washers – Refer to AASHTO M 293.
E.Galvanize according to AASHTO M 111.
2.4ANCHOR BOLT TEMPLATES
A.Refer to ASTM A 36.
B.Galvanize according to AASHTO M 111.
2.5SHAFT FABRICATION
A.Use a Department Certified Concrete Precaster or a pre-qualified project
site caster for concrete products according to the Department Quality Management Plan: Precast-Prestressed Concrete Structures.
B.Obtain a minimum compressive strength of 500 psi before stripping the
forms.
C.Permanently mark the top of the shaft with date of casting and supplier
identification.
1.Stamp markings in fresh concrete.
Precast Roadside Sign Foundations
2.6DRILLING EQUIPMENT
A.Capable of:
1.Drilling holes to the required diameter, location, alignment, and
depth in the type of materials present at the shaft locations.
2.Installing and removing casing.
2.7FREE DRAINING GRANULAR BACKFILL
A.Refer to Section 02056.
PART 3 EXECUTION
3.1DRILLING
A.Drilling Holes
1.Drill straight, vertical holes to the depth shown or as directed by the
Engineer.
2.Drill holes within 3 inches of plan position.
3.Remove all loose material from the bottom of the drilled holes
before placing the shaft.
4.Do not use water or slurry for drilling operations.
B.Casing
1.Furnish and place casing when required to prevent the drilled hole
from caving and any time groundwater is encountered.
2.Remove casing during or after the backfill is placed.
C.Uncased Holes
1.Drill uncased, dry, non-caving holes in a continuous operation.
D.Obtain Engineer’s approval to place shaft under water.
3.2SHAFT INSTALLATION
A.Place and compact free draining granular backfill in the bottom of the
drilled hole to the proper elevation before placing the shaft.
B.Place free draining granular backfill up to the top of the shaft.
1.Compact by hand using a maximum of 12-inch lifts.
END OF SECTION
Precast Roadside Sign Foundations
Utah revises spec sections through supplementals and new editions. We check this one every week and email you the day it changes. Free, no account.
Source: Utah Standard Specifications for Road and Bridge Construction, 2026 Edition. Pages 825–827 of 1,331.
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