Some typical design details are presented in the following figures. Figure 13.40 shows the typical details for a drainage channel to be installed in the verge between the pavement and a cutting slope, Fig. 13.41 shows the likely details to be employed
hard shoulder, hardstrip
or carriageway
min. 1.20 m
Fig. 13.40 Cuttings — Standard concrete channel in verge with drain and pipe
|
central |
hard shoulder, hardstrip |
|
reserve |
or carriageway |
|
"New Jersey” |
|
|
crash barrier |
Fig. 13.41 Drain for use in conjunction with concrete barrier and linear slot drainage channel
hard shoulder, non-pavement verge made
hardstrip or of impervious material
carriageway
Fig. 13.42 Cutting — Combined surface water and groundwater filter drain and drain pipe
concrete
channel
in the vicinity of a traffic safety barrier such as appears in a central reservation, Fig. 13.42 shows a typical combined drainage system for both surface runoff and subterranean water collection whilst Fig. 13.43 shows a subterranean fin drain arrangement for pavement sub-drainage.
