MASH Implementation Timeline Ing. Juan Carlos Rivera Supervisor, División de Proyectos de Seguridad Vial
MASH Agenda Differences between NCHRP 350 and MASH Joint Implementation Agreement for MASH Puerto Rico Standard Drawings Changes with MASH Future revisions to Standard Drawings
What is MASH? Manual Assessing for Safety Hardware (MASH) Original Version 2009 Actual Version 2016 New criteria for crash testing safety hardware Supersede NCHRP 350
Evolution 4
NCHRP 350 VS MASH Pickup truck increases from 4,400 lbs. to 5,000 lbs. Small car increases from 1,800 lbs. to 2,420 lbs.
Joint Implementation Agreement for MASH MEMORANDUM FHWA January 7, 2016 SAFETY HARDWARE TO BE IN COMPLIANCE WITH MASH 1 W-Beam and Cast in Place Concrete Barriers 2 W-Beam End Terminals 3 4 Cable Barriers, End Terminals for Cable Barriers, Crash Cushions Bridge rails, transitions, other longitudinal barriers, other terminals, sign supports, other breakaway hardware
Joint Implementation Agreement for MASH COMPLIANCE DATES 1 W-Beam and Cast in Place Concrete Barriers 2 W-Beam Terminals June 30, 2018 3 Cable Barriers, Cable Barrier Terminals, and Crash Cushions December 31, 2018 4 Bridge rails, transitions, other longitudinal barriers, terminals, sign supports, breakaway hardware December 31, 2019 December 31, 2017
Puerto Rico Standard Drawings Metal Barrier Family Current Version December 2017
METAL BARRIER STANDARD DRAWINGS Principal changes FORMAT FIRST SHEET INDEX AND NOTES
METAL BARRIER STANDARD DRAWINGS W- BEAM GUARDRAIL INSTALLATION AND MATERIALS HEIGHT MID-SPAN SPLICE GAUGE OFFSET FROM HAZARD POST SPACING NEW AND REVISED DETAILS
2. HEIGHT 31 1. MID-SPAN Changes: 1- Mid-span splice 2- Height of element
APPROVED LIST OF BLOCKOUTS 2. TYPES OF PANELS
Changes: 1- Transition from current height to new height 13
Changes: 1- Elevation details with new offsets
2. PAVED AREAS Changes: 1- Normal hazard offset 1m 2- Installation on paved areas 3- Hazard offset 0.15m with deep post 3. DEEP POST 0.15 M
1. NEW LAYOUT DEEP POST: 8 Changes: 1- New layout on concrete slab post
INSTALLATION ON CONCRETE SLAB
1. WOOD POST FOR LONG SPAN SYSTEM Changes: 1- Alternative for long span system
Changes: 1- Installation layout on median
Changes: 1- Maintenance opening detail
Changes: 1- New terminal type MA installation
Thrie beam transition section Type II Speed 45mph 5 2. GAUGE 10 3 4 Changes: 1- Two types of concreteguardrail transitions 6 2- Different types of gauge 3- Two types of post 4- New transition panel for 31 height 5- Identification of pay item limit 6- Post spacing
Thrie beam transition section Type II Speed < 45mph 2. GAUGE 10 4 3 5 Changes: 1- Two types of concreteguardrail transitions 2- Different types of gauge 3- New transition panel for 31 height 4- Identification of pay item limit 5- Post spacing
Changes: 1- New transition module for Speed < 45mph
Median transition 1 7 4 2 3 6 5 Changes: 1- Construction on median barrier 2- Two types of post 3- Different types of gauges 4- Post spacing 5- Nested element 6- Transition panel to 31 height 7- Blockouts widht
CONCRETE BARRIER STANDARD DRAWINGS FORMAT FIRST SHEET INDEX AND NOTES NEW DETAILS SINGLE SLOPE CONCRETE BARRIER TRANSITION DETAIL (F SHAPE TO SINGLE SLOPE) SHORT END SECTION REFLECTORS DETAILS UTILITY POLE COVER OVERHEAD SIGN SUPPORT PROTECTION
Changes: 1- Concrete barrier reflector panels
Changes: 1- Single slope configuration
Changes: 1- Transition from single slope to F shape
Changes: 1- New short end section for speed < 35mph
Changes: 1- Utility pole cover option
Changes: 1- New overhead sign support protection (height difference)
Joint Implementation Agreement for MASH COMPLIANCE DATES OK 1 W-Beam and Cast in Place Concrete Barriers In Progress 2 W-Beam Terminals June 30, 2018 3 Cable Barriers, Cable Barrier Terminals, and Crash Cushions December 31, 2018 4 Bridge rails, transitions, other longitudinal barriers, terminals, sign supports, breakaway hardware December 31, 2019 December 31, 2017
MASH Implementation Timeline Ing. Juan Carlos Rivera Supervisor, División de Proyectos de Seguridad Vial