Re: urgent project help Mr. serpilakbas MY SUGGESTIONS: 1- Change the direction of the D132-D5, D134-D16, D9-D135, D7-D136 ribs on the ceiling of the 2nd floor (with the same logic on the lower floors). You put ribs in parallel with D133, D137 again, it will be corrected when the wrong direction changes.) Close the rib ends, 2- In this case, 1 and 7 axles may not save the beams, so you can increase the width of the beams and columns. 3- You cannot drill holes in the ribs as you wish. It is necessary to support the 15/30 ribs by thinking like beams. put carrier beams around the hole. 4- Process the ladder taking into account the support conditions and put rib beams and support the ladder, 5- Check your loads. live load can be reduced in the attic. Take it easy Unver ÖZCAN