Thought maybe there was an earthquake or volcano involved, but no, only professional standards. Baldwin Street is straight with a uniform gradient across the c

Thought maybe there was an earthquake or volcano involved, but no, only professional standards. Baldwin Street is straight with a uniform gradient across the carriageway. Ffordd Pen Llech has many horizontal curves which all affect the road gradient. ... Measuring on the centreline is standard surveying practice. Details: https://issuu.com/nzis/docs/surveying_spatial_march_2020/s/10373332 https://issuu.com/nzis/docs/surveying_spatial_march_2020/s/1...