Muab xam otmostki ncig lub tsev.

Muab xam cov khoom siv rau qhov chaw dig muag

P - Perimeter lub tsev.
W - Qhov chaw dig muag
U - Tus naj npawb ntawm sab nraud
G - Cov naj npawb ntawm sab nraum qab ntawm qhov chaw dig muag.

T - Geotextiles.
A - Qhov cuab yeej cuab lub zog.
B - Curbstone.
C - Formwork
H - Waterproofing.

D - Pavement thickness.
E - Lub thickness ntawm lub pob zeb ua.
F - Insulation thickness.
M - Gravel cushion tuab.
K - Xuab zeb cushion tuab.

Nta ntawm qhov kev pab cuam.

Kev txiav txim ntawm thaj chaw ntawm qhov chaw dig muag.
Muab xam cov khoom tsim nyog rau cov neeg dig muag.