slab openings andslab openings and penetrations in pt … convention/s5-3... · slab openings...

46
Slab Openings and Slab Openings and Slab Openings and Penetrations in PT Floors Slab Openings and Penetrations in PT Floors By Don Kline P E By Don Kline, P .E 2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E. (C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 1 of 46

Upload: phungkhanh

Post on 24-Apr-2018

243 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Slab Openings andSlab Openings andSlab Openings and Penetrations in PT Floors

Slab Openings and Penetrations in PT Floors

By Don Kline P EBy Don Kline, P.E

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 1 of 46

Page 2: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

1 2 3

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 2 of 46

Page 3: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

1 2 3

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 3 of 46

Page 4: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

1 2 3

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 4 of 46

Page 5: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 5 of 46

Page 6: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

1 2 3

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 6 of 46

Page 7: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

1 2 3

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 7 of 46

Page 8: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

1 2 3

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 8 of 46

Page 9: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 9 of 46

Page 10: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

1 2 3

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 10 of 46

Page 11: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

TopicsTopicsTopicsTopics

Case Study - Method for Creating Openings in PT SlabsCase Study - Method for Creating Openings in PT SlabsAnalyze and Strengthen PT Slabs with New OpeningsEff ti W t D i N

Analyze and Strengthen PT Slabs with New OpeningsEff ti W t D i NEffective Ways to Design New PT Slabs for Future Modification

Effective Ways to Design New PT Slabs for Future Modification

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 11 of 46

Page 12: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

TopicsTopicsTopicsTopics

Method for Creating Openings in P/T SlabsMethod for Creating Openings in P/T SlabsMethod for Creating Openings in P/T SlabsCase Study - Unbonded P/T

Analyze and Strengthen Slab Systems with

Method for Creating Openings in P/T SlabsCase Study - Unbonded P/T

Analyze and Strengthen Slab Systems withAnalyze and Strengthen Slab Systems with New PenetrationsDesigning P/T Slabs for Future Modification

Analyze and Strengthen Slab Systems with New PenetrationsDesigning P/T Slabs for Future ModificationDesigning P/T Slabs for Future ModificationDesigning P/T Slabs for Future Modification

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 12 of 46

Page 13: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Project Overview

BWI Parking GarageProject Overview

BWI Parking GarageBWI Parking GarageBWI Parking GarageOwner: Maryland AviationOwner: Maryland AviationAviation AdministrationArchitect: Michael

Aviation AdministrationArchitect: MichaelArchitect: Michael Baker ArchitectsEngineer: URS

Architect: Michael Baker ArchitectsEngineer: URSEngineer: URSContractor: Whiting Turner

Engineer: URSContractor: Whiting TurnerTurnerPT Subcontractor: VSL

TurnerPT Subcontractor: VSLVSLVSL

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 13 of 46

Page 14: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Repair Sequence for new PT Slab Penetrations

Shoring

X X

X X

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 14 of 46

Page 15: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Case Study: BWI Airport Parking GarageSlab OpeningSlab Opening

Shoring

Layout

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 15 of 46

Page 16: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Case Study: BWI Airport Parking Garage

Chip pocket at new h l tianchorage location

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 16 of 46

Page 17: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Case Study: BWI Airport Parking Garage

ExposeExpose Strands

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 17 of 46

Page 18: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Case Study: BWI Airport Parking Garage

De tensionDe-tension Strands

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 18 of 46

Page 19: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Case Study: BWI Airport Parking GarageNew AnchorageNew Anchorage

Install bulkhead

Backup Reinforcing

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 19 of 46

Page 20: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Case Study: BWI Airport Parking GaragePour High Strength GroutPour High Strength Grout

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 20 of 46

Page 21: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Case Study: BWI Airport Parking GarageStress StrandsStress Strands

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 21 of 46

Page 22: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Case Study: BWI Airport Parking Garage

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 22 of 46

Page 23: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Case Study: BWI Airport Parking GarageDemo OpeningDemo Opening

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 23 of 46

Page 24: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Case Study: BWI Airport Parking GarageForm New Slab EdgeForm New Slab Edge

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 24 of 46

Page 25: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

TopicsTopicsTopicsTopics

Method for Creating Openings in P/T SlabsMethod for Creating Openings in P/T SlabsMethod for Creating Openings in P/T SlabsCase Study - Unbonded P/T

Analyze and Strengthen Slab Systems with

Method for Creating Openings in P/T SlabsCase Study - Unbonded P/T

Analyze and Strengthen Slab Systems withAnalyze and Strengthen Slab Systems with New PenetrationsDesigning P/T Slabs for Future Modification

Analyze and Strengthen Slab Systems with New PenetrationsDesigning P/T Slabs for Future ModificationDesigning P/T Slabs for Future ModificationDesigning P/T Slabs for Future Modification

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 25 of 46

Page 26: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Analysis for new Slab Penetrations

Location of Penetration has Significant Effect on Flexure and Shear CapacityEffect on Flexure and Shear Capacity

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 26 of 46

Page 27: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 27 of 46

Page 28: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 28 of 46

Page 29: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Cutting P/T Affects Stresses in Concrete and Ultimate Strength

27 kips

Ultimate Strength

p

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 29 of 46

Page 30: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Analysis for New Slab PenetrationsAnalysis for New Slab Penetrations

1) Original capacity

2)Loss of2)Loss of capacity

3) Restore original capacity

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 30 of 46

Page 31: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Flexural Strengthening

Conventional MethodsFlexural Strengthening

Conventional Methods1 2 3

Conventional Methods Conventional Methods Steel Framing

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 31 of 46

Page 32: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Flexural Strengthening

Ad d FRPAdvanced FRP CompositesComposites

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 32 of 46

Page 33: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 33 of 46

Page 34: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Strengthening With Strengthening With External P/TExternal P/T

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 34 of 46

Page 35: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Flexural Strengthening

External P/T atFlexural Strengthening

External P/T atLarge OpeningsLarge Openings

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 35 of 46

Page 36: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Flexural StrengtheningFlexural StrengtheningFlexural Strengthening

External P/T atL O i

Flexural Strengthening

External P/T atL O iLarge OpeningsLarge Openings

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 36 of 46

Page 37: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

TopicsTopicsTopicsTopics

Method for Creating Openings in P/T SlabsMethod for Creating Openings in P/T SlabsMethod for Creating Openings in P/T SlabsCase Study - Unbonded P/T

Analyze and Strengthen Slab Systems with

Method for Creating Openings in P/T SlabsCase Study - Unbonded P/T

Analyze and Strengthen Slab Systems withAnalyze and Strengthen Slab Systems with New PenetrationsDesigning P/T Slabs for Future Modification

Analyze and Strengthen Slab Systems with New PenetrationsDesigning P/T Slabs for Future ModificationDesigning P/T Slabs for Future ModificationDesigning P/T Slabs for Future Modification

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 37 of 46

Page 38: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Incorporating Flexibility into New D i

Incorporating Flexibility into New D iDesignsDesigns

Mark tendon locations in slabDesign using knockout panelsMark tendon locations in slabDesign using knockout panelsDesign using knockout panelsDesign using bonded P/TDesign using knockout panelsDesign using bonded P/Tg gg g

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 38 of 46

Page 39: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Marking PT on Slab Soffit Marking PT on Slab Soffit 1 2 3

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 39 of 46

Page 40: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Knockout Panels Knockout Panels

1 2 3

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 40 of 46

Page 41: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Two-Way Slab with Bonded P/T Two-Way Slab with Bonded P/T 1 2 3

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 41 of 46

Page 42: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Opening Using Bonded P/TOpening Using Bonded P/T

Proposed Slab Edge Opening

DE

Opening

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 42 of 46

Page 43: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Opening Using Bonded P/TOpening Using Bonded P/T

Remove DE Slab

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 43 of 46

Page 44: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Opening Using Bonded P/TOpening Using Bonded P/T

Remove DE Slab

I t llInstall General Zone Reinf.

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 44 of 46

Page 45: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

Slab Opening with Bonded P/TSlab Opening with Bonded P/T1 2 3

Slab Opening with Bonded P/T Slab Opening with Bonded P/T

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 45 of 46

Page 46: Slab Openings andSlab Openings and Penetrations in PT … Convention/S5-3... · Slab Openings andSlab Openings and Penetrations in PT Floors ... Analyze and Strengthen Slab Systems

SummarySummarySummarySummaryMethods Exist for Creating Openings in P/T Sl bMethods Exist for Creating Openings in P/T Sl bSlabsOne Must Analyze the Slab System with the N O i

SlabsOne Must Analyze the Slab System with the N O iNew OpeningProvide Slab Strengthening, if RequiredNew OpeningProvide Slab Strengthening, if RequiredIncorporate Flexibility for Future Modification into New DesignsIncorporate Flexibility for Future Modification into New Designs

2008 PTI TECHNICAL CONFERENCE SESSION 5 - SLAB OPENINGS AND PENETRATION IN PT FLOORS DON KLINE, P.E.

(C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page 46 of 46