inserting the table colomn data in multiple tables colomn.(SQL SERVER)
Try this

CREATE TRIGGER Trigger_t1
   ON  T1
   FOR INSERT
AS 
BEGIN

    SET NOCOUNT ON;

    insert into T2(C1,C2,C3 )
    select  C1,C2,C3 
    from    inserted    


    insert into T3(C1,C2,C3 )
    select  C1,C2,C3 
    from    inserted    


    insert into T4(C1,C2,C3 )
    select  C1,C2,C3 
    from    inserted    

END
GO


DML trigger statements use two special tables: the deleted table and the inserted tables. SQL Server automatically creates and manages these tables.

                                                                                      :MSDN


https://msdn.microsoft.com/en-us/library/ms191300.aspx