www.highwayguardrail.com 13 Revised: October 5, 2009
PLACING FOUNDATION TUBES FOR WOOD OR SYT™ POSTS
Complete the following steps to install foundation tubes and Wood or
SYT™ posts:
Step Actions
1.
Select Option A or Option B for this tube installation.
1. For 6' 0" (1830 mm) Tube without Soil Plate
1. Install the foundation tube (PN-749G), per
Step 2 below.
Option
A
2. For 4’ 6” (1375 mm) Tube without Soil Plate
(locations 3 through 8, locations 3 through 7,
or locations 3 through 4)
1. Install the soil tube (PN-740G), per Step 2
below.
1. For 4' 6" (1375 mm) Tube with Soil Plate
(locations 1 & 2)
1. Assemble the soil tubes and soil plates.
2. Bolt the soil plate (PN-766G) to the
foundation tube (PN-740G) with two
5
/
8
" x
7
1
/
2
" (16 mm x 190 mm) Hex Head Bolts
(PN-3478G) and
5
/
8
" (16 mm) HGR Nuts
(PN-3340G) (no washers).
3. Install the foundation tube (PN-766G) with
soil plate, per Step 2 below.
Option
B
2. For 4’ 6” (1375 mm) Tube without Soil Plate
(locations 3 through 8, locations 3 through 7, or
locations 3 through 4)
1. Install the soil tube (PN-740G), per Step 2
below.
Note: Do not over tighten the nuts and deform the tubes, this will
complicate post replacement.
WARNING: Ensure that the proper Leaveout (specified
area of open space in the pavement) around the posts is
reserved and filled with state/specifying agency approved
backfill material that will not prevent movement, for any
posts installed in rigid pavement such as any thickness of
concrete or asphalt. Failure to follow this warning could
result in serious injury or death in the event of a collision.
2.
Install the foundation tubes at locations 1 and 2. Use the strut
as a guide for the spacing of the tubes. If the soil plate is
utilized, position it on the downstream side of the post (away
from the impact head).
Note: Do not drive tubes with the wood post inserted, this will
complicate post replacement.
INSTALLATION OPTIONS FOR FOUNDATION TUBES FOR
WOOD OR SYT™ POSTS
Complete the following steps to install foundation tubes and Wood or
SYT™ posts:
FOR PERMEABLE SOIL
Step Actions
1.
If the soil is permeable (water will drain from the tubes), drive
the tubes (with an appropriate driving head) to the optimum
height, where the top of the tube is 2
5
/
8
” (67 mm) above the
finished grade.
Note: Take extra care to prevent settlement or lateral
displacement of the tubes, to ensure the posts attach to the
Guardrail, correctly.
2.
Ensure that the finished Guardrail height will be approximately
27
3
/
4
" (706 mm) above the finished grade, or as the state/
specifying agency plans indicate.
3.
Ensure that the tubes do not project more than 4" (100 mm)
above the finished grade.
Revised: March 2010
To Next Page
Loading...