HomeMy WebLinkAbout11a'aaa VftshkWton State
r
DgparbTalwd ot TrarapportmOcin
VrAff T,,an,�tatjon Building KF 01
5201
Olympia, Wiiehingt� 96504
206 753 6005
April 14, 1986
L%uaine niarentman
sac,eta,y of Tlandip�t-,I—
"M
F�
All
CA Agencies
Re: Beam Guardrail
Anchors
An
error in bolt dimension on Standard Plan Numbers C-6,
the 5/8"
C-6c, and
and 91�"
C -6d
bolt
has
been broug ht to' our attention. In particular,
Type Anchor, the Alternate Type
4 Anchor,
and
shown
the
in the Alternate .1
Type 5 Anchor is too long 'or the two bottom bolts. These two bolts
go
through the smaller dirDension of the 6" x 81, post and
should be
73�."
long.
The upper single bolt requires a 91�" bolt as shown.
followin
alternates
are
-o
. I -
R
For projects that are under construC—on, e
available t o resolve this problem:
1. A change order revising the bolt length with a credit equal
If the longer bolts are
to the cost differential in material.
restocking charge ma_� be in order.
o the project.
n
2. If the 9;,�" bolts have sufficient threads, us�� them.
3. If the 9;�" bolts do not have sufficient threads, revise bolt
length as noted abo ve or provide a spacer, by change order.
so the nut can be tightened adequately.
For pr ojects that have not been advertised, a special provision must be
from 9��11 to 71,2" until revised Standard
written changing the bolt length
Plans o r a General Special Provision is issued.
Sincerely,
WILLIAM I. HORDAN
State Aid Engineer
WIH:cej
LJJ 15: 7 4
cc: J.
K lasell, District I
R
Selstead, District 2
B.
George, District 3
B
Elderkin, District 4
R
Howry, District 5
D.
Guhlke, District 6