gatepost, flagpost, or bollard footing
gatepost, flagpost, or bollard footing
(OP)
The design depth of the sonotube footing is about 10 feet. The load is the truck impact load.
Right now I am thinking the post should be embed into the sonotube, not on top since the anchorage is tough.
how far should the post be embedded?
does the sonotube require reinforcement? bollard would not require though.
do we need sleeve for the 6" post, and how big? with no shrink grout?
Thanks for any input!
Right now I am thinking the post should be embed into the sonotube, not on top since the anchorage is tough.
how far should the post be embedded?
does the sonotube require reinforcement? bollard would not require though.
do we need sleeve for the 6" post, and how big? with no shrink grout?
Thanks for any input!






RE: gatepost, flagpost, or bollard footing
Hint: The flagpole will require very different analysis of wind loading than the gate and latch, which has significant gravity live loads and dead loads, and will very likely settle (sag) over time.
RE: gatepost, flagpost, or bollard footing
RE: gatepost, flagpost, or bollard footing
regular bollard we only embed post without sleeve. While sign post are on top of sonotube.
But this is also gate post, need to be more straight.
RE: gatepost, flagpost, or bollard footing
Actually, bollards around federal buildings are designed to stop trucks. Especially trucks loaded with nitrogen and diesel fuel.
RE: gatepost, flagpost, or bollard footing
RE: gatepost, flagpost, or bollard footing
RE: gatepost, flagpost, or bollard footing
RE: gatepost, flagpost, or bollard footing
Google
FM 3-19.30
FTA-TRI-MA-26-7085-05
UFC 4-022-02
UFC 4-022-03
MIL-HDBK-1013/1A
RE: gatepost, flagpost, or bollard footing
RE: gatepost, flagpost, or bollard footing
Dave
https://www.youtube.com/watch?v=nP6SKDppwes
Thaidavid
RE: gatepost, flagpost, or bollard footing
RE: gatepost, flagpost, or bollard footing
RE: gatepost, flagpost, or bollard footing
I believe that's an anti-ram bollard. A regular bollard won't behave that way.
RE: gatepost, flagpost, or bollard footing
RE: gatepost, flagpost, or bollard footing
There're two types of bollards :
A)non-security bollards which is not intended to to stop the vehicle but to give warning as described by jayrod12 , Those types of bollards are usually designed considering impact force of
26.7kn (passenger vehicles) as per IBC 2012 - 1607.8.3 .
B)Rated Security Bollards are designed to immobilize the vehicle while the bollard is still functioning after the impact which require a footing with massive dimensions and depth (Like 3.0m x 3.0m) for stability. The design of those bollards shall follow BSI PAS68 specifications.
Security bollards with its foundations are special ,designed/produced by specialized certified suppliers and shall be used only where specified in the project (Not everywhere).
RE: gatepost, flagpost, or bollard footing
We've done physical bollard projects where we used proprietary bollard designs that have been tested - they require special designs, testing, rebar, etc.:
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RE: gatepost, flagpost, or bollard footing
RE: gatepost, flagpost, or bollard footing
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