Influence of neighboring structures on the wind pressure on tall buildings.

Reports measurements made of the wind pressure over a model of the Empire State Building as affected by the presence of neighboring models simulating buildings which might be erected on the adjacent blocks. Finds that while the pressure on certain faces of the building was increased somewhat by the presence of neighbouring structures, the resultant of pressure on the windward face and suction on the lee face was decreased. The decrease was greatest when the shielding structure was close by and directly upstream. The height shielded was not as great as the height of the interfering structure.