I went with a combination of 14 x 75 and 10 x75 both diagonal to each other. Uploading a photo of the progress so far. Thank you all for the help.
Thanks Mitchell, Appreciate the guidance. I will pre drill to avoid splitting the timber. Would you still recommend two on each side of the stud pleas ...
I am looking at building an outdoor bench 3.5 m wide. I will be building 3 x stud frames using 70 x 35 treated pine. One in the front of the seat, ...
Pre-drilling is certainly a good idea. I would recommend two screws per join as it will stop the timber twisting.