All posts by Jim Crume
Technical Details: Sign (Click) Here: Using Digital Signatures on Professional Documents
Editor’s note: Digital signatures and seals are loved by some and hated by others, and they’re rapidly gaining acceptance. Nearly every state in the country have okayed their use for professional engineering and surveying documents—but not necessarily at the local jurisdiction or agency level. Jim Crume, a pioneer in the use of digital signatures for...
Spiral Curve Offsets
Editor’s Note: Spiral curves have been used in engineering design for centuries, most prominently for railroads coincident with the worldwide boom in railway construction in the late 1800s. Many who have had to lay out or retrace spiral curves (especially any offsets) might have secretly cursed whoever chose to add them to the design and...