Semi Gantry Crane: When It’s the Right Structure and How to Specify It
A semi gantry crane is the most cost-effective indoor lifting upgrade available — but only when your site meets three specific structural conditions. For facilities that meet those conditions, it typically cuts civil construction cost by 25–40% compared with a full gantry crane covering the same working width. For facilities that don’t, specifying one anyway leads to either a failed structural assessment or an undersized crane that can’t handle the actual load cycle. Most selection guides stop at “use a semi gantry crane when floor space is limited.” That framing is accurate but incomplete. The real question procurement teams face is whether their building structure qualifies, which configuration matches the duty cycle, and what documentation to request before signing a purchase order. This guide answers all three. Voitto Crane supplies two semi gantry crane configurations: the BMH single-girder (2–16 t, $12,000–$40,000 market reference) and the BMG double-girder (5–320 t, $42,000–$70,000+). Both are referenced throughout with specifications taken directly from the Voitto product page. Quick Reference: BMH vs BMG at a Glance Parameter BMH Single Girder BMG Double Girder Lifting capacity…