[PPT] - MEETING 4 MONDAY, SEPTEMBER 12, 2016 Center for the Performing Arts PowerPoint Presentation

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MEETING 4 MONDAY, SEPTEMBER 12, 2016

Center for the Performing Arts

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AGENDA

Welcome, Meeting 3 Recap & Agenda Review
2015 IBC Requirements for Tornado Shelters in Schools
Evolving Educational Delivery in Practice – Coppell ISD
Break
Subcommittee Breakout
Closing

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2015 IBC REQUIREMENTS FOR TORNADO SHELTERS IN SCHOOLS

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2015 IBC REQUIREMENTS FOR TORNADO SHELTER IN SCHOOLS

Mansfield ISD Facilities and Growth Committee - Mansfield, Texas September 12, 2016

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INTRODUCTION

Benchmark Harris, PE Director of Engineering

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2015 IBC ADOPTION PLANS City of Grand Prairie: Already Adopted City of Mansfield: 2016 City of Arlington: 2016 City of Burleson: No plans at this time

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EVOLVING CODES & STANDARDS Updated version of Building Codes and other Standards are often published every several years. These updates

ften contain significant changes that effect new

construction or any renovations of existing facilities. One significant and very recent change we’ll discuss today is a new requirement that new schools and additions be constructed with tornado shelters.

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LOCAL 50 YEAR TORNADIC HISTORY ONLINE http://www.spc.noaa.gov/exper/envbrowser/

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NEW REQUIREMENT IN THE 2015 IBC

Group E (Educational) Occupancies with an

ccupant load of 50 or more shall have a

tornado shelter designed for 250 mph winds and constructed in accordance with ICC 500.

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ZONE AFFECTED BY THIS CHANGE

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ICC 500

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HOST BUILDINGS VS. SHELTERS

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HOST BUILDINGS VS. SHELTERS

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WALL AND ROOF SYSTEMS

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DEBRIS IMPACT TESTING

https://youtu.be/_8hs1e1ET4M

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WALL AND ROOF SYSTEMS Minimum Code Requirements

vs. Actual Tornado Events

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DOORS AND SHUTTERS

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SOME KEY STRUCTURAL REQUIREMENTS

Design for 250 mph windspeeds (~4 times typical pressures)
Design for 100 psf roof live load (5 times typical pressures)
Debris impact testing for all components of the shelter envelope
“Baffling” (to divert debris) any openings > 2” diameter

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SOME KEY ARCHITECTURAL REQUIREMENTS

Minimum 5 sf/person of open floor space (10sf for wheelchairs)
Handicap accessible
Two hour fire rating at shelter perimeter adjacent to a host building
Coordinate planning with MISD’s Local Emergency Planning Committee

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SOME KEY MEP REQUIREMENTS

Natural Ventilaton (or protected Mechanical Ventilation)
Restrooms (with sinks) in the shelter perimeter
Potable Water and Wastewater Storage (onsite and protected)
Two hour emergency back-up power for critical supports systems

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NEW RELATIONSHIPS

Local Emergency Planning Committee Owner’s Architectural & Structural Engineering Peer Reviewers Owner’s Structural Engineering Observer Authority Having Jurisdiction (New Roles)

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VETTING SHELTER FEASIBILITY

We recommend obtaining conceptual approval from the LEPC first:

Verify site is not in a “…precautionary zone that includes facilities that

manufacture, use or store hazardous materials….”

Verify minimum Finish Floor Elevations recommended by Civil analysis are

acceptable.

Verify that design for anticipated occupancy by TEA is acceptable in lieu of IBC

Fire Egress occupancy.

Then, we request confirmation from the Authority Having Jurisdiction

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WHERE DO YOU PUT A TORNADO SHELTER?

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