Trench device and method

Abstract

A catwalk is provided for use in trenching operations that provides increased safety and improves efficiency. Methods are also provided that save time over the prior process of building multiple land bridges. Selected features include reduction in the number of ladders used increases worker safety, along with several other safety features such as catwalk railings, holding devices for ladders, etc. One catwalk is shown with a skid assembly to further increases efficiency by allowing the trench box to be towed with the catwalk in place. A manhole catwalk is shown for easy and safe inspection of manholes without the need for ladders.

1 . A catwalk assembly, comprising:
 a floor having an opening sized to fit over a top portion of a manhole, wherein the opening is further sized to slide only a portion of the way down the manhole;   a first end of a catwalk for placement on an edge of a trench; and   a second end of the catwalk for connection to the floor.   
   
   
       2 . The catwalk assembly of  claim 1 , further including guard rails substantially around the floor and the catwalk. 
   
   
       3 . The catwalk assembly of  claim 1 , wherein the catwalk includes a number of jointed sections. 
   
   
       4 . The catwalk assembly of  claim 1 , further including at least one spacer to attach within the opening, the spacer changing a width of the opening along at least one dimension.