To install and fix a batten board to a batter board pile with excellent workability by mounting a fixing means freely fixing the batter board pile to a short cylindrical body and forming a holding groove horizontally supporting the batten board on one side of the short cylindrical body.

A through-hole 3 opened on upper and lower surfaces is formed on the inside of a short cylindrical body, notched grooves 4, 4 opened at upper ends are placed oppositely and formed on the front sides of both side walls 2a, 2c, and a holding groove 5 continued to the through-hole 3 is formed. A tapped hole 6 formed to communicate with the through-hole 3 is penetrated at the central place of a rear side wall 2b as a fixing means, and a screw 7 is screwed to the tapped hole 6 and the brace fixing fitting A for a batter board are constituted. The fittings A are inserted at the specified height places of a plurality of the batter board piles P, both end sections of a batten board R disposed between the batter board piles P, P are fitted into the holding grooves 5, 5, the screw 7 is clamped, and the rear side face of the batten board R and the front side face of the batter board pile P are brought into press-contact and the batten board R is supported horizontally. Accordingly, the batten board R can be fixed to the batten board pile P with excellent workability by using the fittings A.