PURPOSE: To enable a pair of burying boxes to be positioned and fixed at the same time with one setting-out work.

CONSTITUTION: Core ink for arrangement to decide the center P in arrangement of a pair of burying boxes 25 are put out on the a deck plate 1. A frame 35, where a pair of burying boxes 25 are attached and core ink alignment holes 33 are bored at the four corners of a square, whose center is the same as that P of arrangement, is placed on a deck plate 1 so that all the core ink alignment holes 33 may lie upon 9 the core ink 5 for arrangement. The frame 35 is fixed to the deck plate 1 through the core ink alignment holes 33. Hereby, a pair of burying boxes 25 are positioned at the same time to the center P in arrangement and the frame 35 is fixed by laying all the core ink alignment holes 33 on top of the core ink 5 for arrangement, whereby a pair of burying boxes 25 are fixed at the same time, and the manhour in setting-out work and fixing work is reduced.