Drainage, filtration layer and backfill construction

Activity Unit Labour Material
Time-standard
(hour)
Skill Quantity Product
Drain-pipe laying, on bedding, in trench lm 0.16 labourer 3.1 pcs
or 2.04 pcs
terracotta pipe or
enamelled clay-tube
Collector and drain-system laying
on bedding, in trench, attached
(diameter 10-15-20 cm)
m 0.16 labourer 1.015 m concrete pipe 
(cement duct)
tube with base 
or socket
Bedding bottom-drain or bottom-channel m3 2.09 labourer 1.23 m3 screened gravel
Covering bottom-drain or bottom-channel m 0.07 labourer 5 pcs partition brick
Building stratified filter (drain) mass m3 2.57 labourer 1.08 m3 screened gravel 
(or sand, or riprap)
Sealing drain or channel 
(barrier construction)
m3 1.32 labourer 1.23 m3 mine-clay, bitumen or cement
and soil
Spreading drain-blanket (layer) 
on ready-made grade
m3 1.83 labourer 1.14 m3 gravel 
(sand, grail)
Building temporary drain system
on bedding or in trench, attached
m 1.25 labourer 16.7 pcs stock brick
Building temporary drain system
on bedding or in trench, attached
m 0.16 labourer 5.4 pcs
or 0.0085 m3
crest tile
of faggot
Backfill construction
maximun slope: 1:3
spread by equipment (e.g. grader)
m3 0.1 labourer 0.3075 m3 gravel
lm = linear meter