• Home
  • Download PDF
  • Order CD-ROM
  • Order in Print
Figure 12-55.-Sliding boom tip connector.
Diesel Hammer Operation

Equipment Operator Basic - Beginning construction equipment operators manual
Page Navigation
  315    316    317    318    319  320  321    322    323    324    325  
1. It requires only a two-hoist drum crane. 2. It provides accuracy in locating leads in all batter positions. 3.  It  provides  rigid  control  of  the  leads  during positioning   operation. 4. It allows batter angles to be set and accurately maintained. 5. It allows for the use of short boom angles that increases the crane capacity. 6. The boom can be lowered and leads folded under for short hauls over the road when a crane with adequate capacity  is  used  This  operation  depends  on  the  length of the lead and boom and the configuration of the crane. DISADVANTAGES.—   Some  disadvantages  of using an extended four-way lead are as follows: 1. It is the heaviest and most expensive of the three basic  lead  types. 2. It is more troublesome to assemble. Spud  Leads A spud lead is a steel wide flange or H-beam used in place of pile-driving hammer leads. The pile-driving hammer rides on the flange of the beam through spud clips bolted to one side of the pile-driving hammer (fig. 12-58). Depending on the design of the spud lead, the spud can  be  used  as  a  swinging  and  underhung  lead  or equipped with a sheave head assembly as an extended four-way lead An advantage of this type of lead is that it bears the whole bottom of the pile cap to the piling especially when sheetpiling is being driven (fig. 12-59). PILE-DRIVING  HAMMERS The  three  principal  types  of  pile-driving  hammers are the drop hammer,  the steam,  or pneumatic, hammer, and the diesel  hammer. A drop hammer is a block of metal hoisted to a specific height and then dropped on a cap paced on the butt or head of the pile.    Drop hammers weigh from 1,200 to 3,000 pounds. WARNING The  noise  generated  by  a  pile  driving operation  can  cause  hearing  loss.  Hearing protection must be worn by personnel in the vicinity of pile driving operations. Figure 12-58.-Spud clips mounted to one side of the pile- driving  hammer. Figure 12-59.-Sheet pile driving with spud leads. 12-41







Western Governors University

Privacy Statement
Press Release
Contact

© Copyright Integrated Publishing, Inc.. All Rights Reserved. Design by Strategico.