However if you want to better utilize the space in your loft you may consider changing roof trusses and going for stick framing or rafters instead.
Removing roof struts.
Remember any alterations to a roof should be undertaken only with an engineer.
The attic space is 20 feet wide by 10 deep.
The roof itself is shake over felt.
When taking the roofing materials off be sure to extend the path of demolishing to each existing truss on each side of the damaged one.
Use a chalk line to draw a line along the floor parallel to the lower edge of the roof from one end of the attic to the other on both sides.
There is no plywood sheathing.
Use a ratcheting wrench or socket ratchet to loosen the strut mount nuts located on the strut tower.
They work through a combination of tension and compression to ensure that the timber chords and web sizes can be kept to a minimum and keep costs down.
The roof pitch is 12 12.
The very old 2 by 4 rafters are 24 inches on center.
The central w shape is how most of the loads are distributed and this is where.
Watch this video before.
From the point the rafter meets the top plate of the wall to the center on the attic space is 10 feet.
Loosen all of them and remove all but one.
The first step when removing a wood roof truss is to disassemble the existing roof that is causing a load upon the truss.
Place a thin piece of plywood under the strut flange to prevent it from damaging the cv boot once you disengage the top portion of the strut.
Measure in from the lower edge of the roof to a point 1 4 the width of the truss on either side of the attic.
Editing to add more information.
Step 1 measure the width of your roof trusses from inside to inside.