Docstoc

Tric Block

Document Sample
Tric Block Powered By Docstoc
					                          PRECAST CONCRETE
                          SOLUTIONS PTY LTD
                           ABN 90 096 370 357


                            TRIC BLOC




         Precast Concrete Median Safety Barrier




                 PRECAST CONCRETE SOLUTIONS PTY LTD
                        P.O. Box 42, Sutton N.S.W. 2620
 Internet: www.precastconcrete.com.au E-mail: admin@precastconcrete.com.au
ABN: 90 096 370 357          Phone: (02) 6297 1611          Fax: (02) 6299 239
Introduction
Tric Bloc is the new generation traffic barrier. It is here now, ready to help you improve
high-way safety by reducing crash severity. For Tric Bloc plans and diagrams please see
the end of this brochure.

With its new profile, wider stance and greater mass, Tric Bloc offers improved impact
resistance and minimizes vehicle climbing. Since it is installed on grade with no
embedment, Tric Bloc is able to move slightly on impact, absorbing kinetic energy from the
colliding vehicle. And Tric Bloc barrier’s simple linkage system means rapid installation
and easy maintenance.

Extensive crash testing according to current safety standards has demonstrated Tric Bloc to
be safer than conventional barriers. In a low-angle hit, for example, the 195mm high “curb”
at the barrier base redirects the vehicle safely back into its travel lane, primarily by wheel
deflection. Above the curb, a 255mm horizontal clearance to the barrier’s central stem
reduces the chance of the vehicle body contacting the barrier. When high speed or a sharp
impact angle gives the vehicle high kinetic energy, the curb will damage the impacting
wheel, reducing the vehicle’s ability to climb the barrier.

The smoothly curved transition between the curb and the stem reduces impact forces on the
vehicle body, minimizing the angle at which the rebounding vehicle leaves the barrier.
These improved impacting and rebound characteristics translate into reduced deceleration
forces, giving the driver a better chance to regain control of the vehicle. And the damaged
wheel naturally pulls the vehicle towards the barrier, further minimizing the vehicle’s
interference with adjacent or following traffic. This means greater safety for the occupants
as well as for others on the road.

The Tric Bloc precast units are linked together like a heavy chain, allowing them to absorb
impact energy by moving. This further reduces the likelihood of personal injury and the
severity of vehicle damage. Should a strong impact cause significant movement, however,
repositioning can be accomplished by one worker in a few minutes, while two can replace a
damaged barrier in only 30 minutes.

Tric Bloc is a semi-rigid traffic barrier offering the impact strength of concrete barriers, the
energy absorbing capability of metal barriers, and crash performance better than both. I
hope you will read through the attached information and plan to use Tric Bloc for your next
high-way barrier installation.




                 PRECAST CONCRETE SOLUTIONS PTY LTD
                        P.O. Box 42, Sutton N.S.W. 2620
 Internet: www.precastconcrete.com.au E-mail: admin@precastconcrete.com.au
ABN: 90 096 370 357          Phone: (02) 6297 1611          Fax: (02) 6299 239
Tric Bloc Barrier Benefits
Tric Bloc is a semi-rigid traffic barrier offering the impact resistance of concrete barriers,
the energy-absorbing capability of metal barriers, and crash performance better than both.

Improved safety – Less climbing and better post-impact trajectory mean safer conditions
                 for both the impacting vehicle and nearby vehicles.

Energy Absorbing – High-mass barrier units are linked into a flexible chain, not fixed in
                the ground. Under heavy impact, barrier movement absorbs vehicle
                kinetic energy while preventing median cross-over and controlling
                rebound.

Improved Shape – Higher barrier “curb” deflects wheel on shallow angle and/or low speed
                impact. On high energy impact, curb damages impacting wheel, causing
                vehicle to pull toward the barrier. Tric Bloc shape gives increased
                stability, reducing vehicle climb and rebound (especially important for
                small cars which can roll more easily when impacting barrier shapes).
                Barrier width reduces tilting which can occur with other barrier systems.

Easy Installation – Barrier Units are set directly on the graded or paved median with no
                  embedment. Installation sleeve fits over lower pins, plate over upper
                  pins; tighten two nuts to complete linkage.

Easy Maintenance – Reverse installation procedure. One worker can move barrier with a
                pry bar. Two can replace a damaged unit in 30 minutes.




                 PRECAST CONCRETE SOLUTIONS PTY LTD
                        P.O. Box 42, Sutton N.S.W. 2620
 Internet: www.precastconcrete.com.au E-mail: admin@precastconcrete.com.au
ABN: 90 096 370 357          Phone: (02) 6297 1611          Fax: (02) 6299 239
TRAFIC SAFETY IS AN IMPORTANT CONSIDERATION ALL OVER THE
WORLD BY REDUCING THE CONSEQUENCES OF ACCIDENTS AND SAVING
LIVES THERE IS A MAJOR INCREASE IN NATIONAL ECONOMIC
PROFITABILITY

More and more countries are now choosing the Tric Bloc System over the conventional
steel and concrete barriers.

What is Tric Bloc
Tric Bloc is a semi rigid traffic barrier developed by Tric Bloc Marketing Co AB, Sweden,
offering the impact strength of concrete barriers, the energy absorbing capability of metal
barriers and crash performance better than both. The precast concrete blocks are linked
together to form a flexible chain allowing them to absorb impact energy by moving.

How does it further improve traffic safety     What are the practical advantages
The following safety performance               The precast concrete blocks each 2m long,
objectives are met because of its heavy        80cm wide and 97cm high, are linked
construction, special profile and absorbing    together and therefore have the following
capability:-                                   benefits:-
! Reduces crash severity by absorbing          ! Installed on grade with no embedment
    kinetic energy thus minimising vehicle        allows for easy assembling and
    damage and passenger injury.                  dismantling.
! Prevents errant vehicle crossing centre      ! Simple linkage means rapid installation
    line, thereby avoiding head-on                of 600m/day.
    collisions.                                ! Emergency opening when and where
! Vehicle trajectory after impact is              necessary.
    parallel to the barrier avoiding           ! Minimal maintenance. Should any of the
    secondary collisions with traffic in          blocks become displaced they can be
    parallel lanes.                               quickly and easily replaced without the
! Final stopping distance after impact is         necessity of road closure.
    in relation to the speed at impact to      ! With an angled end block straight
    avoid secondary collisions with rear          installations as well as curves are
    traffic                                       installed from the same block.
! Vehicle remains upright during and           ! Different drainage problems are solved
    after impact.                                 as the block stands on 2 runners which
! Integrity of passenger compartment is           can be placed either lengthways or
    maintained with no deformation or             widthways, also protecting the lower
    intrusion.                                    profiles from corrosion.




                 PRECAST CONCRETE SOLUTIONS PTY LTD
                        P.O. Box 42, Sutton N.S.W. 2620
 Internet: www.precastconcrete.com.au E-mail: admin@precastconcrete.com.au
ABN: 90 096 370 357          Phone: (02) 6297 1611          Fax: (02) 6299 239
Installations
Tric Bloc is installed in over 50 countries throughout the world including Japan, Singapore,
South America, the USA and several European countries.

For your reference, Tric Bloc Australia has installations at the following locations

Western Australia
Perth – Kwinana Freeway                                .448km
Perth – Mounts Bay Road                                .900km
Perth – Kwinana Freeway Exstension                     .638km
Perth – 1991                                          1.630km
Perth – 1992                                           .254km

South Australia
Murray Bridge                                          .378km

New South Wales
Lithgow                                                .260km
Lane Cove                                              .200km
Sydney – Pennant Hills                                 .158km
Sydney – Newcastle Freeway                             .228km
Sydney – Gorehill Freeway                              .120km
Sydney – Delphi Road                                   .650km
Sydney – Delphi Road                                   .260km
Sydney – Parramatta (1994/95) M4                      1.762km
Lawson                                                 .296km
Newcastle Freeway                                     1.450km
Wollongong – Mt Ousley                                1.952km
Wollongong – Mt Ousley (1994/95)                      2.056km
Wollongong – Bulli Pass                                .100km
Wollongong – Mt Keira                                  .222km
Kiama (1994/95) – Princes Highway                     1.588km

Victoria
Melbourne – SE Arterial                               3.060km
Melbourne – Tullamarine Freeway                        .640km
Melbourne – South Eastern Freeway                     1.200km
Bulla Shire                                            .100km

Australian Capital Territory
Canberra – Tuggeranong Parkway                        1.350km




                 PRECAST CONCRETE SOLUTIONS PTY LTD
                        P.O. Box 42, Sutton N.S.W. 2620
 Internet: www.precastconcrete.com.au E-mail: admin@precastconcrete.com.au
ABN: 90 096 370 357          Phone: (02) 6297 1611          Fax: (02) 6299 239
                                            6.4.5-3         Road Design Guide - May 1996

System Type. Nearside and Offside               System Name. Tric Bloc
Major Dimensions                                General Details (patented product)




                                                Terminal
                                                Treatments:          <80km/h – sloped end and
                                                                     sand barrels.!80km/h –
                                                                     G-R-E-A-TCZ terminal,
                                                                     sand barrels or taper
                                                                     beyond the clear zone.
Reference      See Manufacture’s Drawings
                                                Speed Zone:           Up to 110km/h.
Crash Test Results

This barrier was developed in Sweden and gives good results with both small (900kg), heavy
(2,000kg) passenger vehicles and (10,000kg) intercity coaches, impacting at speeds up
110km/h and 25°. Because the barrier deflects, the impact severity is lower than for non
deforming barriers. In other aspects, performance is similar to the Type F
rigid barrier.

Remarks.

Impact height is extremely important. The connection between units must be carried out in
accordance with the requirements of the manufacturer.

Application.

Particular application at sites where it is appropriate to allow surface runoff from the
carriageway to pass underneath. Because it is readily moved, it is suitable for temporary
works. Should an accident, or road repairs require traffic to go onto the other carriageway for
a short period then gaps in this system can be quickly achieved.

Design Points.

A minimum offset of 500mm or the dynamic deflection is required.

This is a patented product and is to be installed in accordance with the manufacturer’s
drawings ans specifications.

The greater height checks for sight distance.

                                                         Roads and traffic Authority. N.S.W.

				
DOCUMENT INFO
Shared By:
Categories:
Tags: Tric, Block
Stats:
views:124
posted:4/9/2010
language:English
pages:8
Description: Tric Block