: The purpose of this study is to pile up the data for the planning of a glassworks structure. Firstly we inquired into the scale of the structure, used materials of wall, floor, roof and others, and the relation between manufacturing process and the block planning of structure, and what we have measured are the surface temperature and area of heat sources and structures, air temperature, air velocity and sound level inside and outside of structure in summer.
    From the results of this inquiry, this paper points out a few problems about the working environment in glassworks as follows:
  (1) Protection against heat from a furnace is not enough.
  (2) There are many structures which were planned without considering effective counterplans for ventilation in summer.
  (3) As the height of story is low in two storied structures on the whole, high temperature air is not exhausted effectively to outside and the calorific intensity in the interior increases, so that the environment of working area is influenced by the height of structure.
  (4) In the automatic manufacturing glassworks the sound level which the machines make is over 100 phon constantly inside the structure and over 70 phon outside of works site, and there is the possibility of public nuisance.
    According to these measurements we get some fundamental data for planning of glassworks:
  (1) The approximate calorific intensity amounts to 120 - 284 kcal/hm³ in common glassworks.
  (2) About the efficiency of heat protecting plates which surround the furnace, we concluded that those which are duplicated by small emissive plate as aluminium or glossy iron plate and fire proof insulating materials, for example glasswool or rockwool are comparatively effective.
  (3) The scale of structure, the floor area of working room and others.