NEW MEANS & METHODS for BRIDGE OVERHANG CONSTRUCTION aka - - PowerPoint PPT Presentation

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NEW MEANS & METHODS for BRIDGE OVERHANG CONSTRUCTION aka - - PowerPoint PPT Presentation

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NEW MEANS & METHODS for BRIDGE OVERHANG CONSTRUCTION aka Stay-in-Place Precast Fascia Form October 2, 2018 1 2 Overview General Components Panel Types Panel Lengths Soffit Widths Reinforcement Hardware

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SLIDE 1

NEW MEANS & METHODS for BRIDGE OVERHANG CONSTRUCTION

aka Stay-in-Place Precast Fascia Form

October 2, 2018 1

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SLIDE 2

Overview

2

  • General Components
  • Panel Types
  • Panel Lengths
  • Soffit Widths
  • Reinforcement
  • Hardware

October 2, 2018

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SLIDE 3

General Components

October 2, 2018 3

Soffit Primary Tie Secondary Tie Lower Stud Inserts Upper Stud Inserts Notch Front Face

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SLIDE 4

Panel Types – Cross Sectio

February 16, 2017

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Panel Types – Cross Sections (con’t)

October 2, 2018 5

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Soffit Width Considerations:

  • 0” at wing walls or moment slabs.
  • Standard Widths < 2’-0”
  • > 2’-0”
  • Diagonal tie deck penetration
  • Strut introduction?
  • Top flange torsional analysis
  • 4’-0” max.
  • Varied

6 October 2, 2018

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SLIDE 7

Forms & Reinforcement

October 2, 2018 7

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Panel Length

− Standard Length = 5’-0” − NYSDOT Standards for control joint spacing. − Contract control joint spacing. −

  • Max. Length (suggested) = 8’-0”

− Considerations − Crack Control − Shrinkage − Curvature − Vectorially − Varied Radii − Camber

October 2, 2018 8

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SLIDE 9

Hardware Variations

Stiff Strut-Tie Flexible Strut-Tie

October 2, 2018 9

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SLIDE 10

Tie Connection Detail - Embeds

  • Note: Lubricate Thread at end of tie rod

and install plastic sleeve around rod in deck pour for tie rod removal above sleeve nut.

October 2, 2018 10

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Frontage Road Structure (FRS) – Span 9

October 2, 2018 11

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Panel Shake- Out

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Bridge L29

October 2, 2018 19

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Erection

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  • Layout
  • Landing
  • Connecting
  • Adjusting
  • Joint Treatment
  • Studs
  • Tie Removal

October 2, 2018

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SLIDE 21

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SLIDE 22

Alternate Secondary Tie

October 2, 2018 22

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Deck Reinforcement

February 16, 2017 24

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October 2, 2018

SLIP FORM

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SLIDE 30

October 2, 2018 30

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SLIDE 31

Stay-in-Place Precast Fascia Form

February 16, 2017 31