Peter
Is it possible to make the KOP all standing?
Any thoughts on the costs/logistics?
The basic geometry of the kop complies with the existing rules for standing in the UK ie., the angle of the stand and the depth of the step. Obviously it doesn't have the barriers. So you could strip out the seats and put in the barriers and you're ready to go. Fully standing Kop. 'All' you need is a change in the directive from (FIFA and) the Secretary of State as advised by the FA to allow standing in the top two divisions.
Standing in rail seating with a barrier every one or two rows of standing is far safer than the current UK regulations for standing where the barriers are every 4 to 10 rows depending on the angle of the stand and the strength of the barrier.
If you wanted to increase capacity (at approaching 2:1 say), the increased frequency of barriers in rail seating would probably mean that you would not need to put in an extra step in between each existing step. Nevertheless it could be done.
The existing steps on the Kop can accommodate two people, one behind the other according to the Green Book, which is kind of hard to believe (we have forgotten what it was like on the old kop and people have got bigger), so the rule of thumb is that you might increase capacity between about 1.6:1 to 1.8:1 depending on the number of additional stairs and escapes required for the increased numbers. The numbers of escapes are a function of escape time and takes a bit of working out.
There would be a whole slew of escape considerations and space provisions on Walton Breck Road with the increased capacity. That said, there is more space now than there used to be. It would come down to space, management and crowd flow.
Then you have to consider the additional weight of almost twice as many people on the structure. So there may or may not be structural strengthening required, but probably.
Technically speaking you're meant to be able to see the ball in flight 18m high over the pitch at any point. You can't do that even now if you stand at the back of the kop. That may or may not be an issue. It may be considered a compromised view. You can stand at the back and sit at the front. You can't do vice versa for obvious reasons. So the roof may have to be lifted - at the back (behind the main girder). The girder itself may have to be lifted.
So not terribly easy, sure. Technically possible, probably. Certainly not as expensive as a 10,000 seat expansion to build and hopefully not as expensive to buy tickets for.