Sessional papers of the Dominion of Canada 1909 . Abutment Wall Let us calculate the reaction T at the heel post:— If we call a the angle of the gate with the normal to the face of the wall (in ourcase 21° 48) and A B the total length of the gate leaf (in our case 38) we have, bymoments about B 456 DEPARTMENT OF PUBLIC WORKS 8-9 EDWARD VII., A. 1909 Q X ^^ = TX A B sin a T= Q 2 sin a — = Reaction T, reaction = T, resultant tlinist = Q 2 sin a It will thus be seen that the res\iltant thrust T from the water press\ire Q on thegate will be applied at the centre of heel post at an angle 2 a from t
Sessional papers of the Dominion of Canada 1909 . Abutment Wall Let us calculate the reaction T at the heel post:— If we call a the angle of the gate with the normal to the face of the wall (in ourcase 21° 48) and A B the total length of the gate leaf (in our case 38) we have, bymoments about B 456 DEPARTMENT OF PUBLIC WORKS 8-9 EDWARD VII., A. 1909 Q X ^^ = TX A B sin a T= Q 2 sin a — = Reaction T, reaction = T, resultant tlinist = Q 2 sin a It will thus be seen that the res\iltant thrust T from the water press\ire Q on thegate will be applied at the centre of heel post at an angle 2 a from the normal to theface of the Upper Abutment Wall
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