Shamanna led a representation to the central government to get the required quantity of water and electricity supplied to the citizens of the city.
Shamanna started Shri Ranganatha Institute of Commerce in 1938 to provide typing and stenography (shorthand) skills to the emerging working population of South Bangalore.
Realizing the growing need of Bengaluru city, Shamanna initiated formation of new layouts for residential purposes of citizens.
[7] Shamanna initiated and executed a transit accommodation for the patients and relatives visiting the government run Victoria Hospital (Bangalore Medical College).
[8] Recognizing his yeoman service to the society, the park adjoining the Bugle Rock in Bengaluru has been named after him.