S.L. 10.11 · Construction Of Houses And Drains (S.L. 10.11)
S.L. 10.11 Art. 9Box seats.
Box seats shall in no case be used, but lifting seats or stone seats thoroughly cemented shall be adopted.
S.L. 10.11 · Construction Of Houses And Drains (S.L. 10.11)
Box seats shall in no case be used, but lifting seats or stone seats thoroughly cemented shall be adopted.