attachment_1_bid_168_25.pdf

PDF 277 KB Posted Apr 12, 2025

Attached to: Bridge Beam Slabs State and local contract opportunity
Solicitation number: Bid 168-25
Issued by: Merrimack County, Derry CDP, New Hampshire

About this file

Written by GovTribe AI · Apr 12, 2025

This document is a technical engineering drawing for a prestressed bridge slab project by the New Hampshire Department of Transportation's Bureau of Bridge Maintenance for NH Route 114 in Weare, NH (Bridge No. 137/043). The design details a prestressed concrete bridge slab system with specific technical specifications, including 4'-0" nominal width prestressed units with 0.6" seven-wire low relaxation strands, designed using LRFD (Load and Resistance Factor Design) methodology and HL93 design loading. The project involves precast concrete solid slabs with a compressive strength of 6000 psi at 28 days, utilizing AASHTO 2024 LRFD Bridge Design Specifications.

The technical drawings provide comprehensive details on strand locations, beam configurations (interior and exterior), reinforcement specifications, and joint details. Key technical requirements include using ASTM A615 Grade 60 epoxy-coated reinforcing steel, specific strand tensioning protocols (initial tension of 57 kips per 0.6" strand), and precise manufacturing guidelines. The documentation includes specific instructions for prestress transfer, strand cutting, surface preparation, and embedment details, with explicit notes about manufacturing quality control, inspection procedures, and design calculation requirements. The project appears to be part of the state's 2026 fiscal year infrastructure improvement program.

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File	Type	Posted
Addendum_1_bid_168_25.pdf	PDF	Apr 28, 2025
addendum-1-bid-168-25.pdf	PDF	Apr 16, 2025
attachment-1-bid-168-25.pdf	PDF	Apr 16, 2025
bid-168-25.pdf	PDF	Apr 16, 2025
addendum-2-bid-168-25.pdf	PDF	Apr 16, 2025
attachment-2-bid-168-25.pdf	PDF	Apr 16, 2025
bid_168_25.pdf	PDF	Apr 12, 2025
attachment_2_bid_168_25.pdf	PDF	Apr 12, 2025

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P H

A S

P H

A S

31'-8"

9'-10"12'-0"9'-10"

C OF TRANSVERSE THREADBARL

4" 4"

63 @ 6" o.c.

J O

I N

T S

S O

L I D

S L

A B

30'-6"

CENTER OF BEARING TO CENTER OF BEARING

DETAIL B

DETAIL A

TYP EXTERIOR UNITS

PRESTRESSED UNITS LAYOUT

1/4" = 1'0"

3" O DUCT

CURBS BY OTHERS

31'-11

PHASE 1PHASE 2

TRANSVERSE SECTION

" = 1'0"8

Y P

GALV. P

4"X5"X5" w/ 2

2 O HOLE

EMBEDED IN CONCRETE

C 3" DUCTL

" TYP.4

Y P

" TYP.2

Y P

C 3" DUCTL

DETAIL A (EXTERIOR POCKET)

2" = 1'0"

ELEVATION SECTION

PHASE 1PHASE 2

4"2"2"4"

GALV.

4"x5"x5" P w/ 2

2" O HOLE

EMBEDED IN CONCRETE

THREADBAR, ANCHOR P , NUT

& COUPLER BY OTHERS

C JOINT

C DUCT AND THREADBARL

DETAIL B (PHASED POCKET)

2" = 1'0"

SECTION

2"1

BACK OF POCKET

2" X 5

(P NOT SHOWN)

ISOMETRIC

TOWN

LOCATION

BRIDGE NO. STATE PROJECT

REVISIONS AFTER PROPOSAL

DESIGNED

DRAWN

QUANTITIES

BY DATE

CHECKED

BY DATE OF

BRIDGE SHEET

FILE NUMBER

TOTAL SHEETSSHEET NO.SHEET SCALE

STATE OF NEW HAMPSHIRE

DEPARTMENT OF TRANSPORTATION * BUREAU OF BRIDGE MAINTENANCE

REV. DATE

ISSUE DATE CREWFISCAL YEAR

PREVENT JOINT GROUT FROM ENTERING THE POST-TENSION DUCTS.

12. MANUFACTURER TO PROVIDE 12 COMPRESSIBLE SELF ADHESIVE SEALS TO BE USED TO

TO BE INSTALLED BY OTHERS.

11. MANUFACTURER TO PROVIDE 16 - 1"x6"x3' 50 DUROMETER PLAIN ELASTOMERIC BEARING PADS

10. CHAMFER ALL EDGES ¾”

ATTAINED A COMPRESSIVE STRENGTH, AS SHOWN BY CYLINDER TEST, OF AT LEAST 4000 PSI.

9. NO PRESTRESS SHALL BE TRANSFERRED TO THE CONCRETE UNTIL IT HAS

STRAND SHALL BE 57 KIPS AFTER ACCOUNTING FOR CHUCK SLIP.�8. THE INITIAL TENSION PER 0.6"

7. THE TENSILE STRENGTH OF THE PRETENSIONING STRANDS SHALL BE 270KSI.

STEEL STRANDS AND SHALL CONFORM TO AASHTO M 203.

, UNCOATED, SEVEN-WIRE, LOW RELAXATION�6. ALL PRETENSIONING STRANDS SHALL BE 0.6"

THE END OF THE BEAM.

5. ALL BONDED PRESTRESSED STRANDS SHALL BE CUT OFF WITH A 9" EXTENSION BEYOND

4. DRILLING INTO THE BOX BEAMS SHALL NOT BE ALLOWED.

3. THE TOP SURFACE OF THE BEAMS SHALL BE RAKED TRANSVERSELY TO A 0.25" AMPLITUDE.

(LOAD AND RESISTANCE FACTOR DESIGN SHALL BE APPLIED).

A LICENSED PROFESSIONAL ENGINEER AND BE ACCOMPANIED BY ALL DESIGN CALCULATIONS

LIFTING AND LIFT HARDWARE DRAWINGS SHALL BE STAMPED AND SIGNED BY

PRECAST COMPONENTS. THESE DRAWINGS SHALL SHOW REINFORCEMENT TYPE, SIZE, LOCATION,

2. SHOP DRAWINGS SHALL BE SUBMITTED FOR APPROVAL IN ACCORDANCE WITH 105.02 FOR ALL:

SHALL BE SUBJECT TO INSPECTION AND APPROVAL BY THE ENGINEER.

1. THE QUALITY OF MATERIALS, PROCESS OF MANUFACTURE, AND COMPLETED SLABS

PRESTRESSED SLAB NOTES

5. CONCRETE: PRECAST CONCRETE SOLID SLABS f'c = 6000 psi AT 28 DAYS

4. REINFORCING STEEL: AASHTO M31 (ASTM A615) GRADE 60, EPOXY COATED

NHDOT 2016 STANDARD SPECIFICATIONS FOR ROAD AND BRIDGE CONSTRUCTION, AS AMENDED

3. AASHTO 2024 LRFD BRIDGE DESIGN SPECIFICATION, AS AMENDED

2. DESIGN METHOD: LOAD AND RESISTANCE FACTOR DESIGN (LRFD)

1. DESIGN LOADING: HL93

GENERAL NOTES

WEARE 137/043 41165

NH ROUTE 114

SWJ

1 2

2/25

2026 14

Weare 137_043 - Final.dgn Prestressed Plan-1 2/25/2025 4:58:47 PM “Personal”

" = 1'-0"2

SCALE: 1 " = 1'-0"2

SCALE: 1" = 1'-0"2

SCALE: 1

4'-0" NOMINAL WIDTH

3'-11½" ACTUAL WIDTH

TO 1/4" AMPLITUDE

TOP SURFACE ROUGHENED

BONDED STRANDS

SCALE: 1" = 1'-0"" = 1'-0"2

SCALE: 1

EXTERIOR BEAM

INTERIOR BEAM BEYOND 2'-0" INTERIOR BEAM AT END

" = 1'-0"2

SCALE: 1

EXTERIOR BEAM BEYOND 2'-0" EXTERIOR BEAM AT END

INTERIOR BEAM

#4 HAIRPIN BARS SPACED AT 12" ON CENTER

#4 STIRRUPS SPACED AT 6"

INTO PAGE

TIE BARS GOING

4'-0" NOMINAL WIDTH

3'-11½" ACTUAL WIDTH

#4 HAIRPIN BARS SPACED AT 6" ON CENTER

2'-0" Lap

TO 1/4" AMPLITUDE

TOP SURFACE ROUGHENED

" = 1'-0"2

SCALE: 1

STRAND LOCATIONS ALL BEAMS

82'-6""8

C 3" DUCTL

2" CLR

L R

P R

O J E

C T

2" CLR

2" CLR2" CLR

L R

R O

J E

C T

R O

J E

C T

#4 STIRRUPS SPACED AT 6"

#4 HAIRPIN BARS

#4 CURB BAR (SEE PLAN)

START 3" FROM END

#4 STIRRUPS SPACED AT 3"

#4 HAIRPIN BARS

44"4"4"4"6"4"4"4"4""4

PLACE 3" CLEAR FROM END

2 - #4 HORIZ TIES

PLACE 3" CLEAR FROM END

2 - #4 HORIZ TIES

2'-0" LAP

START 3" FROM END

#4 STIRRUPS SPACED AT 3"

1'-5

10"

CURB HAIRPIN

3'-6"

HORIZ TIE

" JOINT2

TOWN

LOCATION

BRIDGE NO. STATE PROJECT

REVISIONS AFTER PROPOSAL

DESIGNED

DRAWN

QUANTITIES

BY DATE

CHECKED

BY DATE OF

BRIDGE SHEET

FILE NUMBER

TOTAL SHEETSSHEET NO.SHEET SCALE

STATE OF NEW HAMPSHIRE

DEPARTMENT OF TRANSPORTATION * BUREAU OF BRIDGE MAINTENANCE

REV. DATE

ISSUE DATE CREWFISCAL YEAR

Prestressed Details-1

JOINT DETAIL

3"=1'-0"

SCALE: 3"" = 1'-0"

JOINT DETAIL

" = 1'-0"2

SCALE:

BAR DETAILS

137/043WEARE 41165

NH ROUTE 114

SWJ

2/25

2 2

2142026

Weare 137_043 - Final.dgn Prestressed Details-1 2/25/2025 4:59:31 PM “Personal”

Attachment 1 Beam Specs 1

beam drawing

File details come from the government source that posted it. Updated Apr 12, 2025.