This paper presents an analytical solution, together with explicit expressi
ons, for the steady state response of a homogeneous three-dimensional half-
space subjected to a spatially sinusoidal, harmonic line load. These equati
ons are of great importance in the formulation of three-dimensional elastod
ynamic problems in a half-space by means of integral transform methods and/
or boundary elements. The final expressions are validated here by comparing
the results with those obtained with the boundary element method (BEM) sol
ution, for which the free surface of the ground is discretized with boundar
y elements.