In most cases, shortcuts are unsafe and not any more efficient. Shortcuts are more about not selecting the right equipment or improperly using the right equipment than they are about efficiency. Tools and equipment are designed for specific purpose, and equipment used for anything other than its intended purpose becomes dangerous.
Scissor lifts are intended to provide a safe platform for workers at a higher elevation. Standing on the mid-rail or the top rail, or working from a ladder stationed on a scaffolding platform is never safe.
A properly planned job will select a scissors lift with enough reach to do the job. Wood planked putlogs can safely be used to create a work platform deck for scaffolding, a walkway, or to bridge sections of scaffolding. Putlog end connections are curved to fit over the platform to secure it to a horizontal scaffolding tube, unlike the picture provided.
For more information on scaffolding and fall protection safety, check out our Scaffolding Safety Field Guide.
This railroad bridge section would be difficult to replace using a mobile crane on the approaches or in the canyon, but by combining multiple lifting and transporting technologies the job runs smoothly.
A top-running monorail crane is transported on railroad bogies and positioned to span the existing section. It raises on the bridge structure by hydraulic jacks and hoists the old bridge section. The dual top-running trolleys transport the section and lower it onto waiting bogies where it is moved back so the new section can be moved in and lowered into place.