Baker had read Engineering under Inglis, and obtained
a first class honours degree in 1923. After graduating he worked for
the Air Ministry on the structural problems of airships.
A 1920's airship
In 1929, at the age of 28, Baker contracted tuberculosis and was told
he would never be able to work again. However, economic necessity drove
him back to work as a Technical Officer with the Structural Steel Research
Committee. This committee aimed to produce a code of practice for the
design of steel framed structures. Tests carried out on real buildings
in the 1930s showed that stresses measured on site bore little relation
to those calculated using the code of practice. It was this revalation
that led to Baker’s life work in the development of a plastic theory of
design. This led to a revolutionary method of steel design, which was
of immense value during the second world war, and was continued afterwards
by his team at Cambridge.
In 1933 Baker was appointed to the Chair in Engineering in Bristol. He
left at the outbreak of war in 1939 to become Scientific Adviser to the
Ministry of Home Security.