A.

Lighting Pole Foundation -
Notes and Photos by Able Group Inc.
The concrete foundation required to handle a tall lighting pole must have Safety First thinking and follow professional standards. Lighting poles must be able to sustain hurricane force wind and be able to sustain a vehicular accident without falling on someone in the area. Although there are local codes to enforce the proper installation of parking lot lighting poles, there are too many cases where economical short cuts are made by those unaware of what may happen in abnormal situations. Lighting pole foundations must have the correct diameter, height, proper steel rebar reinforcement, proper electrical conduit and mounting bolt installations. This page shows some of our experiences and a way to point out what is wrong and what is right in prioritizing Safety First.
Contact - Able Group Inc  about it.


B.

C.

D.

E.

F.

G.


H.

I.

J.

K.

L.
M.

N.

O.

P.

Q.

R.

S.

T.




More examples & information related to Lighting Pole Foundation can be found here:
Parking Lot Lighting
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Light Poles

 

Swaying Pole:

A.
Pole Foundation - Improper
Bolted down to concrete.
This is most often the cause.

B.
The only solution is to cut the top of the surface down for the sole purpose of exposing good threads for "double-nut" mounting.

C.
Note the damaged threads made from the swaying pole.

C.
Spacing Test for remounting the pole.  The stack of washers indicate the thickness of the bottom plate PLUS the washers needed for mounting.

E.
Re-check the alignment of the embedded bolts in the event they were installed crooked.

NOTE: Lack of rebar.

F.
Concrete foundations can move out-of-level for many reasons. 
This situation appears to be completely natural due to lack of proper excavation backfill during the original installations.



 

G.
Foundation Ground Down
.


 

 

H.
Original bolts soaked with solvents and prepared for thread re-cutting renewal
.

Foundation bolts "re-cut" embedded bolts made as good as new.
Original bolts soaked with solvents and prepared for thread cutting renewal
.
The bolt renewal will now allow the proper double-nut mounting
.
 

I.
Original bolts with the proper "double-nut" mounting
.
The foundation being out of level will not matter.


Damaged Pole:

J.
Vehicular damaged lighting pole
.
This foundation should not have broken.

NOTE: there are no reinforcing steel rods.

K.
Vehicular damaged lighting pole
.
This foundation should not have broken below the ground.
This is due to lack of reinforcing steel rods.

Proper Pole Foundation:

L.
This is the proper method of rebar steel rods for the inside of a good foundation.

Lighting Pole Foundation to replace existing.
Note rebar for horizontal and vertical steel rods.



M.
Proper Foundation preparation.
Vertical and horizontal rods required before the form tube.

Lighting pole foundation in an area having a concrete sidewalk and concrete curb.


N.
Proper Foundation preparation.
Vertical and horizontal rods required.
Bollard posts due to high hazard area.



O.
Lighting Pole embedded mounting "L" bolts showing the base template required for the concrete pour.

NOTE: upper and lower hex nuts.

P.
Lighting pole foundation proper compacting using a jumping jack.

Compacting the crushed stone used as backfill around a new parking lot lighting pole foundation.



Q.
Showing stub-up conduits, embedded mounting bolts and vibration concrete finish.

Lighting pole foundation made ready for the pole fixture and ready for the blacktop area re-surface work.

R.
Light pole foundation built to maximize parking space yet built with extra steel rebar and coated with high visible yellow paint.

S.
Pyramid Style Lighting Pole Foundations are built special for areas receiving continuous vehicular damage.
These were built for large Trash Trucks at their Parking Island.  These foundations are reinforced with steel and are meant to be bumped.
 

T.
Proposed diagram of a Pyramid Style Lighting pole foundation.