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Best Practices in High-Rise Construction
Tom ConnorsApril 23, 2012 – Times Square Marriott Marquis
The NYC Department of Buildings is a registered Provider with The American Institute of Architects Continuing Education Systems (AIA/ CES). Credit earned on completion of this program will be reported to AIA/CES for AIA members. Certificates of Completion for both members and non‐AIA members are available upon request.
This program is registered with the AIA/CES for continuing professional education. As such, it does not include content that may be deemed or constructed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product.
Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.
This presentation is protected by US and International Copyright laws. Reproduction, distribution, display and use of the presentation without written permission of the speaker is prohibited.
©NYC Department of Buildings
Copyright Materials
Course Description
This course will give an overview of safe construction in New York City, which is regulated by the 2008 NYC Construction Codes to ensure that regulations remain up‐to‐date with evolving safe practices. The Department of Buildings is at the forefront of approving new materials and technology, enabling it to advance safe practices through education and specialized on‐site inspections with ownership and contractors.
Electronic visual examples will provide an understanding for the best and worst practices found on construction sites across the City. This presentation will allow participants to incorporate best practices in future projects – while better enabling them to identify and mitigate risks that could pose safety threats to the public.
Learning Objectives
At the end of this program, participants will have learned:
• The provisions for construction high‐rise site safety from Chapter 33 of the 2008 NYC Building Code
• The best and new practices being used to protect the public during construction through the use of visual examples of state‐of‐the‐art cocoons and vertical protection technology
• How to identify processes that pose a potential risk to the public during construction and to mitigate overhead hazards in high‐rise site safety
• Proper demolition practices critical to conducting a safe high‐rise construction project
BEST Practices in High-Rise Construction
• Primary Strategies
• Alternative Strategies
• Demolition Strategies
• Major Projects Initiative
Major Building Projects Filings Progression
0
100
200
300
400
500
600
700
800
2008 2009 2010 2011 2012
196
306368
600
758
Current Major Building Filing Types
140
22
398 17
New Buildings
Alt‐1 Conversions
Façade Repair
Demolitions
Primary Strategies for Safe High-Rise Construction
• Standpipes
• Sidewalk Sheds
• Jersey Barriers
• Vertical Netting
• Horizontal Netting
Standpipe Systems (3308.8.11)
• Alt‐2 Filing
• Dedicated Power Supply
• Check Valves
• Locks & Caps
• Manual Air Release
• Signage
• Audible Alarm Range:
• 15 dBa Above Ambient
• Noise <110 dBa
Standpipe Systems
Air Gauge at Highest Point
Alarm Bell at Guardhouse
• 300 lb. Live Load: Buildings > 100 ft• 150 lb. Live Load: Buildings < 100 ft
Sidewalk Shed Requirements
Lighting at 8 Feet
Sidewalk Shed = Overhead Protection for the Public (3307.3.1)
Lane Closure Utilizing Jersey Barriers
DOT Compliant
Lane Closure (3307.4.3)
Highly Visible Barriers = Safe Site
60” Code Compliant Vertical Netting (3308.1.1)
Supported Scaffold with FullHeight Debris Netting (3308.1)
HorizontalNetting(3308.1.2)
• Horizontal Netting
• Interior Climbing Crane
• Work Platforms
Examples of Good Practices
Good and Bad Netting
Good
Bad
Ugly
Poor Scaffold Netting Maintenance
Alternative Strategies
• Full Height Vertical Netting
• Rigid Vertical Protection
• Static Horizontal Netting
• Partial Cocoon systems
• Full Cocoon systems
Full Height Vertical Perimeter Netting
Rigid Vertical Perimeter Protection
60” Rigid VerticalPerimeter Protection
Added Protection Afforded by Static Horizontal Netting
StaticHorizontal& VerticalSafetyNetting
Requirements for Cocoons
•Compliance with Buildings Bulletin # 2010‐019
•Alteration Type 2 Application
•CCD‐1 Submittal to Engineering and Safety
•Operations Division
•Review of Application
Partial Cocoon
Cocoons of Solid Material
Full Cocoon with FullHeight Vertical Netting
Cocoons Loading Platform
Screen Cocoon with Full Height Netting
Conventional Top Deck
Full Cocoon Protection on Top Deck
Cocoon = Comfort & Safety
Cocoon Being Raised
Shear Wall Forming Behind a Cocoon
• Slab to Slab Vertical Nets
• Static Horizontal Nets
• Cocoon System
• Sidewalk Shed
Full Public Protection
Safe High-RiseConstruction=
A Long Life
Safe Demolitions ofMajor Buildings
Sidewalk Sheds
Steel & ConcreteDemolition
Full MechanicalDemolition
Dust Control (3306.9.3)
Common Interior Demolition Hazards
Unsafe Storage of Demolition Debris
Major Projects Initiative
• Education
• Communication
• Cooperation
• Innovation
• Technology
• Expectations
Benefits of the Major Projects Initiative
• Share Information
• DOB Point Person
• On Site Meetings
• Joint Inspections
• Address Challenges
Results of the Major Projects Initiative
0102030405060708090100
2009 2010 2011 2012
Amount of Full Stop Work Orders for Major Buildings
27 Current Participants
Contact Engineering & Safety Operations
Become a Partner in theMajor Projects Initiative
Questions?This concludes the American Institute of Architects
Continuing Education Systems Course
NYC Department of BuildingsBuildings University AIA Point of Contact:
Allison Ginsburg [email protected]
212‐566‐4415