The need to understand the capital needs for a period of at least ten years, and that this needs to be supported by a longer term costed maintenance programme.
Yr angen am ddealltwriaeth o anghenion cyfalaf am gyfnod dim llai na deng mlynedd, a bod angen cefnogi hyn gyda rhaglen wedi ei gostio o gynnal a chadw tymor hirach.