Jersey Barrier – Technical Specification Guide

Standard Dimensions

Parameter	Measurement	Tolerance	Purpose
Height	810mm	±10mm	Vehicle containment
Base Width	600mm	±5mm	Stability
Top Width	150mm	±5mm	Impact surface
Length	3050mm	±15mm	Standard unit
Front Slope	55° (1:1.4)	±2°	Vehicle lift
Back Slope	84° (1:0.1)	±2°	Space efficiency
Weight	2.3 tonnes	±0.1t	Unit mass

Profile Geometry

Height from Base	Width	Angle	Purpose
0-75mm	600mm	90°	Base stability
75-255mm	Variable	55°	Initial impact
255-510mm	Variable	84°	Vehicle redirect
510-810mm	150mm	Vertical	Upper containment
Drainage Slot	75x300mm	N/A	Water flow

Performance Ratings

Test Level	Vehicle Type	Mass (kg)	Speed (km/h)	Impact Angle (°)
TL-3	Single Unit Truck	8,000	80	15
TL-3	Pickup Truck	2,270	100	25
TL-3	Passenger Car	1,100	100	25
TL-2	Pickup Truck	2,270	70	25
TL-1	Passenger Car	1,100	50	25

Material Specifications

Component	Grade	Strength	Standard
Concrete	Class 40	40 MPa	ASTM C31
Reinforcement	Grade 60	420 MPa	ASTM A615
Connection Loops	Grade 60	420 MPa	ASTM A706
Lifting Inserts	Grade 50	350 MPa	ASTM A36
Joint Pins	Grade 50	350 MPa	ASTM A36

Installation Requirements

Parameter	Specification	Tolerance	Verification
Foundation	150mm granular	±25mm	Compaction test
Alignment	String line	±15mm	Survey check
Level	Design grade	±10mm	Level survey
Joint Gap	20mm	+10mm/-5mm	Measure
Pin Installation	Full depth	-0mm	Visual check

Connection Systems

Type	Components	Spacing	Rating
Pin & Loop	32mm pin	300mm ends	TL-3
J-J Hook	Steel hook	Continuous	TL-3
T-Connection	Steel plate	600mm	TL-3
Quick-Link	Steel connector	450mm	TL-2
Temporary	Drop-pin	600mm	TL-2

Maintenance Requirements

Item	Frequency	Check Points	Action
Visual Check	Monthly	Surface condition	Document
Joint Inspection	Quarterly	Connection integrity	Tighten/Replace
Level Survey	Annually	Settlement	Adjust
Impact Check	Post-incident	Structural damage	Assess/Replace
Drainage	Monthly	Clear slots	Clean