Cost-Plus Under a cost-plus arrangement, the owner agrees to pay the contractor the actual costs of construction of the project plus a predetermined fee, which may be in the form of a stipulated amount or a percentage of the construction costs.
How often a horse needs to see a farrier will vary from horse to horse. I find that with my miniature Shetland ponies the farrier needs to come out about every 10-12 weeks depending on the state of the hooves.
The peak of the wither of a 16hh horse (64) would actually be approximately 1 3/4 inches above your eye level. So, when you are next to the withers and are both standing square on level ground, if the horse's withers obliterates your view beyond it, there is a good chance the horse is closer to 16hh.