[4] He was nominated as member of the Rajya Sabha the Upper house of Indian Parliament in 1958, but resigned in 1959 and joined the Planning Commission of India.
In few years, the Indian Service of Engineers (ISE) was established (1919) and he was allotted his first assignment (September 1917– March 1921) for surveys and investigations of Bhakra Dam Project .
[10] In 1931 Khosla was deputed to the US and Europe to study soil reclamation, water logging and the latest techniques in dam design.
[11] Between June and September 1936 while in charge of the Hafizabad Division, he wrote his magnum opus, The design of weirs on permeable foundation.
It not only lucidly presents the theoretical aspects of seepage flow but also provides a complete, simple and reliable method for design of weirs.