union0572[1].pdf
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- Attached to
- Concrete T-Wall Sections
- Solicitation number
- RFQ - 17A - 08090400000000000185
- Issued by
- Knox County, Maine
About this file
This is a technical construction plan document issued by the State of Maine Department of Transportation for the Messer Brook Bridge #0572 located in Union, Knox County, Maine. The project involves installing stub guardrail posts on the bridge along with concrete T-wall sections and related structural improvements. The scope of work includes placement of new concrete curbs, installation of concrete T-walls at specified elevations, placement of concrete footings, installation of guardrail posts with offset brackets, and restoration of disturbed sideslopes with loam and seed. The plan details specific dimensions and quantities for structural components, including five T-wall sections with varying heights (ranging from 2'–6" to 5'–0"), reinforcing steel schedules with multiple bar marks (#500 through #505) and specified spacing requirements, and anchor bolt configurations. The document is dated September 2006 and includes comprehensive technical specifications, elevation views, plan views, and detailed section drawings necessary for construction execution.
The document specifies all reinforcing steel materials must meet ASTM A615 Grade 60 standards, with detailed placement requirements including bar spacing at intervals such as 9 inches transverse and 18 inches longitudinal, and stirrup bars spaced at 1-foot on-center. Construction requirements include saw-cutting and removing existing pavement to specified depths, drilling and grouting dowel bars into existing structures with minimum embedment of 12 inches into ledge, and installation of hot bituminous pavement to match existing grades. The plan indicates use of existing stone retaining walls as heavy riprap and establishes specific concrete pad dimensions proportional to width-to-height ratios. No pricing information, contract award dates, response deadlines, or procurement timeline details are included in this technical specification document.
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| File | Type | Posted |
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| Solicitation_terms.doc | DOC document |
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Text version
F.H.W.A.
REG. NO.
STATE PROJECT NUMBER
SHEET
NO.
TOTAL
SHEETS
AUGUSTA, MAINESHEET OF
STATE OF MAINE
DEPARTMENT OF TRANSPORTATION
MAINE
MESSER BROOK
IN THE TOWN OF
OVER
border for HP plotter (divisions)
Bridge #0572 1 1
MESSER BRIDGE
UNION
KNOX COUNTY
1 1 September 2006
Install stub guardrail posts on bridge.
3 Sp.@3’-1 1/2 "= 9’-4 1/2 "1’-11 3/4 " 1’-11 3/4 " 1’-1 3/4 "
1’-1 3/4 "
Guardrail post with offset bracket (typ.)
Guardrail length to be determined in the field.
PLAN VIEW
L
3" 7" 8"
1’-6"
C 3/4 " 0 Anchor bolts L
Stub guardrail post
Spacer plate
TYPICAL CURB SECTION
LEGEND
GENERAL NOTES
Section view of existing concrete
Section view of new concrete
1...Chamfer all exposed edges of concrete 3/4 "
2...All reinforcing steel shall have a minimum of 2" of clearance.
Section view of ledge
5 Sp.@3’-1 1/2 " (typ. both sides, both ends)
13’-4"
C Roadway (Construction)
1 1/4 "
W6x25
Hole this face
1" Thick steel base plate 3/16 "
3/4 " O Hole
FRONT SIDE
3 1/2 "
7"
7"
1 1/4 "
1 1/4 "
TOP
1 1/4 " 1 1/4 "4 1/2 "
C 7/8 " O HolesL
Center 5" O hole on plate
1/4 " Thick steel plate
SPACER PLATE DETAIL
STUB POST DETAILS
LC 7/8 " O Holes
Top of existing curb
Roadway elevation at existing curb.
Install stub guardrail posts on top of new curb.
UPSTREAM ELEVATION
(Downstream is similar)
Place a concrete pad at the elevation of the bottom of the t-walls. Pad to be
1 1/2 times wider than it is tall.
T-wall shear key (typ.)
T-wall section
Place a new concrete curb against the existing. See typical section view for details (typ.).
1’-2" 7 1/2 "
11’-2"
Place concrete T-Walls. Align face with abutment face and match skew.
T-WALL ELEVATION VIEW
B
CA
1 1/2
Use the existing stone retaining walls as heavy riprap.
6"
New concrete widening to be cast on top of T-Wall "C".
Mark No. Width
T-WALL SCHEDULE
Wall Height Stem Height
A
B
C
4’-0"
4’-0"
2’-6"
2’-6"
2’-6"
2’-6"
5’-0"
5’-0"
3’-6"
Install a concrete footing. Top to be 2’-6" below bottom of existing superstructure slab.
Loam and seed all new and disturbed areas of sideslopes. D
D Shear Key 4
Stem length
4’-0"
4’-0"
4’-0"
REINFORCING STEEL SCHEDULE
MARK SIZE NO. LENGTH LOCATION
#5
#5
#5
#5
#500
#502
#501
#503
11’-0"
2’-0"
2’-0"
Curb stirrup
Curb longit.
Curb dowel
3’-10"
#500 BAR
Reinforcing steel to be ASTM A615 Grade 60
Footing dowel
10’-10"
Place #503 bars at 2’-0" o.c.
#500 Stirrup bars
@ 1’-0" o.c.
Saw cut and remove pavement to a depth of 2" or more a minimum of 6" in front of the existing curb. After new curb and posts are installed place hot bituminous pavement to match the existing grade and crosslope.
Place footing concrete in undermining if possible.
Use the existing stone retaining walls as heavy riprap (typ.).
*Two with the majority of the wall on the right of the stem.
Two with the majority of the wall on the left of the stem.
#505 Bar
Existing breastwall.
Drill and grout a #503 bar dowel a minimum of 12" into ledge (typ.).
Center on footing.
Reinforce with a mat of steel using #5 bars at 9" o.c. transverse and 18" o.c. longitudinal.
Drill and grout #502 bars into existing curb. Space at 1’-0" o.c. horizontally alternating top and bottom. Grout per manufacterers recommendations.
#504 #5 16 2’-0" Footing reinf., (cut to fit)
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