Archive for November, 2006

Anchoring Pallet Rack: Replacing the Bit…

Wednesday, November 22nd, 2006

Knowing when to replace the roto-hammer bit is rather simple and yet not many people, even some installers, really known when or why it is necessary. 

Why do we want to replace the bit? Well, the answer is simple, “Productivity and Efficiency”.  The more productive and efficient we are installing pallet rack or other storage systems, the faster and more cost effective we are at the installation.

  • When do we replace the bit?
    • Replace the bit when the anchors seem to be restricted when installing (pounding) them into the concrete.  You will notice a definite difference installing anchors in a hole drilled with a new bit compared to an old bit.  The reason for the anchors to feel restricted is the sides of the bit are getting dull.
    • Another reason to replace the bit is when it seems to be taking for ever to drill the holes compared to when you started with a new bit.  When the tip of the bit gets dull it takes longer to pound through the concrete.
    • If your bit is wobbling or bent.  Typically this happens when excessive force is exhibited when drilling the holes.

 Things to recognize when anchoring pallet rack: (These could be factors when anchoring)

  • is the delay in drilling the holes consistent from hole to hole?  You may be hitting rebar or conduit.
  • are you drilling perpendicular to the ground?
  • are you getting enough power to the roto-hammer?
  • are you using the appropriate size roto-hammer for the size of holes you are drilling?

Remember; when anchoring pallet rack let the roto-hammer do the work.  Leaning or even standing on it will not help drill the hole any faster.

 Look for an upcoming post that will discuss a different ways of installing anchors when installing pallet rack…

 

Anchoring Pallet Rack

Monday, November 13th, 2006

Many people think that anchoring pallet rack is easy.  Well, it is.  You drill a whole, pound a wedge anchor in the whole and then tighten it, right?  Well, yes and no. 

That is the basics and pretty much common sense but there is more to it.  Like using the right tools, knowing when you need a new bit, how deep to drill, and  how much torque to apply to the anchors. These are just a few more things that you should know to help make sure that the pallet rack install is done in a cost effective manner. 

The right tools would include:

  • the proper size roto-hammer  (too small a roto-hammer will be ineffective and will be susceptible to damage)
  • depth gauge (when drilling the holes, you shouldn’t drill through the concrete floor)
    • if holes are through concrete anchors could be susceptible to moisture
    • under-slab electrical - conduit under the slab
  • roto-hammer bits that are the proper diameter and length
  • maul hammer
  • ratchet with sockets
  • torque wrench
  • tape measure (use to square the rack)
  • shop vac ( vacuum up the dust)

In the next post we will discuss:  “When you need a new bit.”

Pallet Rack Installation: Marking the Floor…

Monday, November 6th, 2006

Laying out the floor or marking the floor in preparation for snapping the lines for the pallet rack install can sometimes be nerve-racking.  Many people think installing pallet rack is easy, right, “how tough can it be?”  Well, if the first step goes astray, head-aches will abound later.

Every one makes mistakes, even professional installers will make mistakes once in while.  Most mistakes come from miss-marking the floor, not accounting for columns, or finding out the actual building is smaller than what is on the blue print. Before you start marking the floor, do your homework:

  • Have at least a 100′ tape measure (if not longer depending on the install)
  • Make sure that you have the most current plan or blue print for the install.  Ask for both a fixture plan and tape plan or a print that has both fixture information and tape measurements.
  • Measure the width and depth of building or install area and compare to what is called out on the blue print.  (If there are any discrepancies these should be dealt with now rather than later.)
  • Measure columns, partitions, fixed equipment, doorways, etc…  and compare to the blue print.  (if there are any discrepancies these should be dealt with now rather than later.)
  • Clear unrestricted paths (two paths in each direction) for laying out the tape measure
  • Look for any floor hazards that might be dangerous for forklifts and/or sciissor-lifts (as construction may not be complete on the building)

All building discrepancies should be dealt with up front.  Have a clear plan on how to handle the discrepancies prior to the start of the install (no one likes to do things twice).

 After you have done your homework, layout your tape along the floor.  Try to mark the floor with at least two people.  I find it beneficial to have someone read the measurements off while another person is marking the floor.  By doing this it gives two sets of eyes and seems to expedite the floor layout process.  Always make sure that:

  • the lead of the tape is secure at the starting point while measuring
  • the tape is straight, not curved or avoiding obstacles
  • the tape is on the floor, not going over obstacles
  • the tape is parallel with the wall or boundaries of project.

More pallet rack installation tips in a future post.