I have a standard 2 car garage (20 feet by 20 feet) built in 1948 with some interesting roof structure. There appears to 5 rafter ties which are separated by 4 ft for the first pair then 2 ft for the 3rd tie then 4 ft to the 4th tie and less than 2ft to the 5th tie.
The 5th tie is installed at an angle and intersects one of the rafters on the ceiling and not at the base, this appears to make room for two support boards coming from the ridge beam to the top of the garage door.
In three corners there is a diagonal board spanning the corner. you can see one in the image above of the 5th tie and here is a second one.
My questions are:
1)Can the diagonal corner beams be removed? I have heard that these were used to hold the walls in place during construction and are no longer needed.
2)Since it appears I have a structural beam with the rafters crossing over the top of the beam are these rafter ties necessary since the roof appears to be self supported?
2a) If I do need to leave them would it be possible to move the ties closer together and create the look of two oversized gables rather then 5 boards at somewhat random spaces apart? Maybe replace the 2 in the middle which are only 2 feet apart with 1, and remove the 5th to only have 3 boards running across?
Am i correct in assuming the boards connecting the rafter ties together were added for storage platforms or to support the garage door opener and are not structurally significant to the building?
The angled boards that connect the top of the garage door to the support beam make intuitive sense to me to add support for the moving door but i have not come across anything like this in any of the research i have done, does anyone have any other information about these? There is a similar board on the other end which connect the first rafter tie to the support beam which I believe is intended to offer support to the garage door opener.