grid iron system ring system dead end system radial system
Answer Discuss in Comment
heavier costlier less susceptible to corrosion stronger
house sewer lateral sewer submain sewer intercepting sewer
main sewer house sewer lateral sewer submain sewer
separate system partially combined system partially separate system combined system
circular sewer egg shaped sewer rectangular sewer none of the above
nil to decrease it to increase it fluctuating
circular brick sewer semi-elliptical sewer sewer horse-shoe type sewer circular cast iron sewer
acidic and alkaline alkaline and acidic both acidic both alkaline
drop manhole inlet catch basin manhole
"Scientists dream about doing great things. Engineers do them."
