Modular structure and said modular structure's structural members made of composite material

A modular building which is built by joining composite structural members, wherein the structural members, are made of a composite material comprising at least one type of fiber and at least one type of resin, comprising:

• at least two floor pieces where each of the floor pieces comprises at least one floor connection recess on at least one side and which are positioned with respect to each other where one of the floor pieces corresponds to the floor connection recess of another floor piece to define a floor connection housing;
• and a floor connection member which is placed to said floor connection housing,
• at least two wall adaptors which are placed onto a floor defined by said floor pieces and which comprise a first body with at least one first opening, at least one first connection extension extending upwardly from said first body and which comprise at least one first connection recess provided on at least one lateral surface of the first body and the wall adaptors are positioned side by side to define a first connection housing and where one of the wall adaptors corresponds to the first connection recess of the other wall adaptor;
• and a connection member which is placed to said first connection housing,
• at least one wall brick which has a fifth body with at least one fifth opening and which has at least one fifth connection housing provided on a base of said fifth body and which has a fifth connection extension extending upwardly from the fifth body and which is placed on the at least two wall adaptors so that the first connection extension thereof enters into said fifth connection housing.