Charcon brochure

INSTALLATION GUIDE

INSTALLATION DESIGN: RADII, CROSSINGS, JUNCTIONS AND BENDS Main Carriageway Class 1 mortar Main Carriageway

Concrete/reinforcement to suit anticipated trafficking 12.5mm galvanised steel plate

Concrete/reinforce suit anticipated tra 12.5mm galvanise

RADII

CROSSINGS

HIGHWAY RADII GAP WIDTHS

Class 1 mortar

ST4 Concrete

Highway/Mini Highway To form external radii of 25 metres or less (minimum 6 m), special radius units should be used (see table, right). As these do not cover all individual radius dimensions, some slight gaps are required between units as indicated in Highway radii gap widths table, right

Highway/Mini Highway Use crossing base units to carry drainage runs under side roads/ vehicular crossing points (see Fig 1) Grid units available (see Fig 6) Safeticurb ® (DBK unit only) To continue linear drainage at road junctions, kerb crossing points (pedestrian/vehicular), use transition units to reduce kerb height to road level. These connect with standard grid or slot units as necessary JUNCTIONS/SHARP BENDS Radius Kerb Clearway/Safeticurb ® Use silt box top at outlets or with suitable uPVC pipe fittings (cut to fit) to form junctions or sharp bends (see figs 15a and 15b - page 149.)

Top and base gap

Radius (m) Radius unit reference

125min

6

7/6

2

ST4 Concrete

7.5

10/8

3

Main Carriageway

Crossing Base Units and Cover Plates

9

10.8

2

10.5 125min

25/11

4

12

25/11 Main Carriageway

1

For external radii greater than 25 metres, lay straight units with open joints

Crossing Base Units and C

15

25/11

2

Standard Top and Base Unit

Side road

To form internal radii (minimum 6m internal radius) use internal radius units

20

25/11

5

25

25/11

7

Standard Top and Bas

Clearway/Safeticurb ® Where necessary, standard (straight) units may be laid to form radii or bends

Side road

Radius Kerb

26

Straight

7

Safeticurb ® units: alignment ring within bore acts as a former for infill mortars

Main Carriageway

Main Carriageway

Concrete/reinforcement to suit anticipated trafficking 12.5mm galvanised steel plate

Concrete/reinforcement to suit anticipated trafficking 12.5mm galvanised steel plate

Class 1 mortar

Class 1 mortar

Fig 2. Highway – typical kerb crossing

125x150 BN kerb & surround

ST4 Concrete

125x150 BN kerb & surround

Pavement detail

ST4 Concrete

Pavement detail

Class 1 mortar Thickness varies to suit crossing kerb

125min

12.5mm galvanised steel plate

Class 1 mortar Thickness varies to suit crossing kerb

125min Fig 1. Highway crossing – base unit

12.5mm galvanised steel plate

Main Carriageway

Crossing Base Units and Cover Plates

Main Carriageway

Crossing Base Units and Cover Plates

Standard Top and Base Unit

ST4 concrete bed & haunch

ST4 concrete bed & haunch

Side road

Radius Kerb

Standard Top and Base Unit

Side road

Radius Kerb

125

125

Fig 3. Highway – typical side road (plan view)

Silt Box Top Fig 4. Highway – vehicular cr ssing

Silt Box Top

146

5mm TECHNICAL INFORMATION: charcon.technical@aggregate.com Channel Grating Surfacing

5mm 50mm

Channel Grating Surfacing

50mm

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