Abstract: A gypsum panel includes a gypsum core containing a termiticide with poor water solubility, wherein the gypsum core has a first end region, a center region, and a second end region having an equal thickness and extending along a thickness direction from one surface side to another surface side, the termiticide is contained in each of the first end region, the center region, and the second end region, and a content of the termiticide in the center region is lower than a content of the termiticide in the first end region and in the second end region.

Abstract: A gypsum panel includes a gypsum core containing a termite repellent with poor water solubility, wherein the gypsum core has a first end region, a center region, and a second end region having an equal thickness and extending along a thickness direction from one surface side to another surface side, the termite repellent is contained in each of the first end region, the center region, and the second end region, and a content of the termite repellent in the center region is lower than a content of the termite repellent in the first end region and in the second end region.

Abstract: There is provided a partition wall which is characterized in that studs are secured to upper and lower runners fitted to a substrate in a zigzag arrangement or as common studs; that basic face materials are fitted to the skeleton through sound insulation materials so that the face materials are arranged, in parallel, on both outer sides of the studs, while the studs are internally positioned; and that a hard gypsum sheet comprising fibers dispersed in the gypsum core thereof is arranged on the corresponding outer side of each basic face material. This partition wall is particularly suitable for use as a dry party wall, has satisfactory characteristic properties such as fire protecting properties, sound insulation properties, deformation-follow-up properties, out-of-plane flexural rigidity and hardness. The wall comprises gypsum based construction materials as the top end boards and thus the weight and wall thickness thereof can be reduced.