Shed truss- camber or not?

[Pete O]

Thanks for the input fellas. It's an unusual construction, almost certainly cobbled together by a farmer from second-hand trusses. The photo is probably not very clear but the actual trusses that the roof purlins are bolted to are perpendicular to this one, one at the top of each side wall and one down the middle of the two bays, then timber purlins between those. The damaged truss spans the front of the opening and bears the weight of the centre truss, where you'd normally see a post. So this truss is a one-off in the construction and bears load only at it's centre point. Others have suggested replacing this truss with a post but it's a big advantage to not have a post in the middle of the opening.
I'll get back to welding the replacement truss in the next couple of days and will probably do so without putting any camber in it.