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Blog : aluminum scaffolding

ARIEL WORK PLATFORMS

ARIEL WORK PLATFORMS

ARIEL WORK PLATFORMS / CASTERS IN DETAIL

Today’s work platforms, be it Platform Lifts, Aerial Work Platforms or Scaffolding and when I say scaffolding I’m talking about Aluminum Scaffolding. Now steel Scaffold use casters as well but not as often, the reason is that steel Scaffolding for the most part is stationary. What am I talking about? Well at the bottom of every Platform Lift, Aerial Work Platform or Aluminum Scaffolding there is something they both have in conman and that is Non Marking Wheels. Throughout the years and many customer complaints all Aerial Work Platforms went to the non marking tires for the simple reason not to mark up the customers floors.

This brings me back now to the Scaffolding aspect of this Blog and that is to show you the non-marking caster. Below I am going to break down the caster and show you the different features it possess along with pictures to represent what I am explaining.

Caster Sizes

The Aluminum Scaffolding Casters comes in two sizes 5” and 8”. The reason for the two different sizes is simple; the 5” caster is used primarily in doors because it gives the base section of either the single wide or double wide scaffolding a height of 6’ 6” just low enough to go under a standard doorway.  The 8” caster is used mostly in open areas or outdoors. The larger caster gives you the ability to roll over cords and small pebbles that are often found in those work environments.

8 inch casters are used on job sites primarily for rolling over large wires and cords.

 

 

 

 

 

 

 

 

Caster Stem & Installing Caster

Next is the stem of the caster that has a detente pin that gets depressed when shoved into the adjustable leg of your scaffolding. There are two ways to install the caster. One turn the end frame upside down with the adjustable leg facing up and put the stem of the caster into the adjustable scaffolding leg and pull straight down on the caster while slightly moving it back and forth and it will go in. It is not easy and we don’t want it to be so is the reason for the tight stem fit and the detente pin. Because the caster is tough to install there was invented another way of putting it into the adjustable leg and that is to turn the scaffolding frame on its side and put the stem of the caster in on the horizontal plan and hit the bottom of the caster with a rubber mallet or sand filled one. If you need to use a regular hammer put a piece of wood between the hammer and the caster wheel this will protect the non-marking wheel from damage.

Caster Braking Mechanism

The braking mechanism has two positions, on or off. When the braking lever is pointing up it is in the unlock position. Notice in the picture how the hub of the caster is off set from the vertical member of the caster stem which is put into the bottom of the scaffolding frame. This gives the caster the ease of casting and swiveling when turning. This off set hub also prevents the wobbling you get when the hub is in line with the vertical member. A good example is when you push a shopping cart fast the front caster wobbles from side to side.

CASTER BRAKE IS IN THE OFF POSITION
CASTER IN LOCK POSITION

 

 

 

 

 

 

 

 

 

 

When the brake is put on you need to push it all the way down till you feel it click. You will see in the picture that the hub is now off center of the vertical caster stem just slightly in the opposite direction. So the more weight you put on the scaffold the more that wheel wants to be pushed back into the braking systems.  As I tried to show in the picture the aggressive looking metal teeth that come into contact with the none marking wheel when it is move back under the vertical member of the scaffolding and then the hub or center of the wheel going just past the center of the vertical member and into the metal teeth which stop the rolling of the wheel. At the same time the wheel is going back another set of teeth come up and make contact with a set of teeth that are connected to the swivel portion of the caster as shown in the attached photo. This stops the swivel action of the caster. At this point your scaffolding may flex as you climb it but it will not move side to side or front to back at the base.

CASTER TEETH

 

 

 

 

 

 

 

These casters are field replaceable if lost, stolen or damaged. If you have any questions or comments please feel free to contact me either by phone or email.

Again be safe and remember,”IF YOU NEED TO GET UP, GET UPRIGHT WITH UPRIGHT SCAFFOLD NORTH AMERICA”

 

WHAT IS AN ACCESS PLATFORM?

WHAT IS AN ACCESS PLATFORM?

A BENCH, A CHAIR, A LADDER OR TWO LADDERS WITH A BOARD BETWEEN THEM. THESE ARE CONSIDERED ACCESS PLATFORMS, CRUDE, UNSAFE BUT EFFECTIVE. WE DO NOT CONDONE THE USE OF THESE BUT WERE MERELY TRYING TO MAKE A POINT. THIS IS WHAT YOU CALL AN ACCESS PLATFORM.THE POINT IS IF YOU NEED TO GET OFF THE GROUND TO ACCESS SOMETHING OVERHEAD YOU HAVE WHAT IS CALLED, AN ACCESS PLATFORM. It CAN BE SCAFFOLDING, SCISSOR LIFT, BOOM LIFT OR PERSONNEL LIFT. There are many different names associated with the different lifts but they all have one thing in common and that is to access your overhead needs.

This shows scaffolding spanned over seats to Access lights above. This is a versatile access platform

You have a church with lots of pews and lights above and they need to be changed, what do you do? There are a few options remove the pews and drive a scissor lift or boom lift in as long as the floors are level to access your lights. If the floors are not level then that throws those access platforms out. The other idea is to leave the pews in place and use lightweight aluminum scaffolding that can go up and over the pews. This is achieved by either adjusting the legs out or offsetting a frame, if the floor is really sloped.  Now you have an access platform that will work without having to remove the pews which saves time and energy.

Let’s say your a homeowner who wants to access the side of his two-story building to painted it.  Well you have many choices of access platforms. You can use a boom lift if the ground is solid enough or a scissor lift if the ground is solid or a ladder or scaffolding. All of these are very useful access platforms it just depends on how much you want to spend and how much time you have. This is why you should call a professional to looking at your job and suggest the proper access platform.

When using access platforms please refer to the instruction manuals for any questions or call your representative. If instruction manuals do not come with equipment please call and ask your representative for them or check the equipment before they leave. Any reputable company will go over the proper use of your access equipment with you as well as answer any questions you may have.

If you have any questions regarding access platforms please feel free to give us a call at 707. 799. 8902. We want to make your overhead access needs safe and compliant with all applicable safety rules and regulations.

As we like to say it Upright Scaffold North America,”IF YOU NEED TO GET UP GET UP RIGHT WITH UPRIGHT SCAFFOLD North AMERICA.”

UPRIGHT SNA HATCH DOOR PLATFORMS

UPRIGHT SNA HATCH DOOR PLATFORMS

HATCH DOOR PLATFORMS:

What is a hatch door platform? Upright SNA will show you pictures of hatch door platforms, explain why they are used and their ability to be fixed in the field. Upright SNA hatch door platforms are made to climb through by climbing the frame of the scaffolding or climbing the snap in stairs.

UPRIGHT SNA HATCH DOOR REPLACEMENT BOARDS:

The manufacturers, we represent, use half-inch marine plywood mounted inside and aluminum structure.  The two manufacturers Upright SNA represent are, EZ Lift and Vault manufacturers and they both use the same design. The one difference is that Vault shaves their platform board down on the ends of the platform boards to make the aluminum even that grips the ends of the board with the sides of the platform assembly. Just let us know if you have a Vault platform when calling to order.

The EZ Lift platform board does not need to be routed at the ends. You just need a half-inch marine plywood board and you’re set to go. This gives you the ability to either order the board from us or just go to your nearest wood supplier which will be a lot less expensive. You see we just save you money.

THIS A HATCH DOOR PLATFORM HATCH DOOR CLOSE
THIS IS A HATCH DOOR PLATFORM WITH THE HATCH DOOR OPEN

HATCH DOOR PLATFORMS FIXED IN THE FIELD:

On top and on the sides of the platform assembly you will find Allen bolts or some other type of screw/bolt fastening device. Remove the fasteners and either pull out the board or the hatch door board and replace. Instructions will be sent for replacement of boards by manufacture. Upright SNA always wants the customer to take time and read the manufacturers instruction manual which can save you time and money in the long run.

HATCH DOOR PLATFORM ACCESSIBILITY:

There are two ways to access the hatch door platform. You can either climb the frame of the scaffolding or you can climb up Snap in stairs. The reason you use a hatch door platform is to keep the worker on the inside of the scaffolding for better protection. The cost difference between a hatch door platform and the standard platform is a round $20-$30.

When using the hatch door platform on a single wide scaffolding tower you want to offset the hatch door from the one below. So to have a platform with a hatch door on the right side than the next platform up will be on the left side.  The offsetting of the hatch door platforms is used for fall protection. Your platforms are to be placed every 10 feet.  There are four reasons for this; one it’s used for an erection platform, two used as a resting platform, three used for fall protection and four, a work platform.

THIS IS A WALK-THROUGH PLATFORM WITH SNAP IN STAIRS
THIS SHOWS A WORKER CLIMBING THE SNAP AND STAIRS

 

HATCH DOOR PLATFORM CONCLUSION:

What is a hatch door platform? I hope this has answered your questions. There will be more blogs regarding the subject in the future. If you have any questions regarding the subject please feel free to give me a call at 707. 799. 8902 and my name is Joe Foot. I have been doing this for 30 years and if I can’t answer your questions I can find the ones that can.

As we like to say at Upright Scaffolds North America, “if you need to get up, get upright with Upright Scaffolds North America.”

 Upright Scaffold North America Adjustable Leg

 Upright Scaffold North America Adjustable Leg

 

Adjustable leg:

What is an adjustable leg? Upright Scaffold North America adjustable legs are used to level scaffolding on uneven surfaces. They also are used for getting over objects but never use the adjustable legs to gain height. If you need to gain height either raise the platform up or add another section. The adjustable legs are only used for leveling scaffolding or getting over objects.

 

Adjustable leg scratches:

Upright Scaffold North America adjustable legs can be released for a rapid adjustment by lifting and twisting the knurled ring. This will release this split threaded nut letting the leg slide out easily. Gravity itself should let the leg slide out but if it doesn’t, we have an obstruction. The adjustable leg is being held by either debris, dent in the frame or an over adjusted set screw. When pulling this adjustable leg out I keep feeling something dragging over the threads and then I could see evidence of scratching. At this point you would back off the set screw and the adjustable leg will slide out easily. Upright Scaffold North America suggests that when installing or readjusting the set screw you want to stick your finger up inside the frame of the scaffolding. If you feel the set screw going pass the inside wall of the frame back the screw off till it is flush with the inside wall of the frame.

THESE ARE SCRATCHES CAUSED BY SET SCREW BEING OVER TIGHTEN

Upright Scaffold North America suggests that you wipe your adjustable leg down with the light lubricant. This prevents oxidization and also helps in sliding the leg in and out of the frame. We also suggest that you take time to read your Safety manual http://uprighYestsna.com/safety/. If you have any questions please feel free to call us at 707. 799. 8902 and ask for Joe foot.

THIS SHOWS THE SCRATCHES CAUSED BY OVER TIGHTENING THE SET SCREW

 

Adjustable leg conclusion:

If you’re having a problem with your adjustable leg sliding out easily one area to check is the set screw. Back the set screw off and try to slide the leg out. If it will not slide out easily now; there is another issue which will be discussed in another blog. We now hope you understand one issue that can happen to your adjustable leg if you over tighten the set screw.

As we like to say, “IF YOU NEED TO GET UP, GET UPRIGHT WITH UPRIGHT SCAFFOLD NORTH AMERICA.”

Scaffolding

 

ADJUSTABLE LEG LOCK FOR ALUMINUM SCAFFOLDING

ADJUSTABLE LEG LOCK FOR ALUMINUM SCAFFOLDING

ADJUSTABLE LEG LOCK FOR ALUMINUM SCAFFOLDING

THE ADJUSTABLE LEG LOCK IS A MECHANISM THAT LETS THE ADJUSTABLE LEG SLIDE IN AND OUT OF THE SCAFFOLDING FRAME. Aluminum scaffolding cannot have more than 12 inches of adjustability in its legs. For the adjustable leg to have a true 12 inches of adjustability the leg needs to have 13 inches of thread (will talk about this in another section).  The adjustable leg lock is a mechanism that unlocks a split threaded nut allowing the adjustable leg to slide in and out freely.  When you’ve reached your desired length you lock it by pushing the outer ring straight down. This will engage the threads of the split threaded nut into the threads of the adjustable leg.

If for some reason the ring will not slide down just slide the leg in or out just a little. What is happening is you’re trying to mesh a thread on top of another thread. So by moving the leg either in or out a little bit the thread will slide into the threads of the leg.

How it happens:

The leg lock mechanism consists of a split threaded nut and a knurled ring that when lifted and twisted up releases the split threaded nut which expands out releasing its threads from the threads of the aluminum leg.  This then gives you the ability to slide the aluminum threaded leg in and out of the base frame. This gives you the ability to level your scaffolding on un-even surfaces or to help you get over objects. The adjustable legs are never to be used to gain height. Please refer to your instruction manual.

Damaged adjustable leg lock:

A picture is worth a 1000 words regarding this damaged adjustable leg lock. The adjustable leg lock is held in by a set screw. As you can see the set screw was missing from the adjustable leg lock mechanism.  The customer secured the leg lock mechanism with a wire wrapped around the adjustable leg lock mechanism and over the horizontal rung.

BROKEN ADJUSTABLE LEG. CUSTOMER WIRED ADJUSTABLE LEG TEETH.
CUSTOMER LOST SET SCREW TO ADJUSTABLE LEG AND WIRED IT ON. FIX GET A NEW SET SCREW

 

 

 

 

 

 

 

 

 

The customer I can only assume tried to fix this in the field. What happened is he wound up holding the ring to the leg lock mechanism open. So the leg was not secured in the frame and could slide out if the scaffolding were rolled over a negative area. All the customer needed was a set screw and a screwdriver to fix the problem.

Conclusion:

I would highly recommend when it comes to parts of the scaffolding like the adjustable leg lock mechanism, adjustable legs, short pin, long pin interlock clips and bushings that the customer carries these with them at all times. The adjustable leg mechanism in the other mentioned above parts are field replaceable. So read your safety manual, carrier spare parts and the tools to make the repairs in the field.

 

 

 

 

 

As we like to say at Upright Scaffolds North America, “If you need to get up, get upright with Upright Scaffolds North America.”

Scaffolding

UPRIGHT S.N.A. AERIAL WORK PLATFORMS / CASTERS

UPRIGHT S.N.A. AERIAL WORK PLATFORMS / CASTERS

 

ISSUE:

Casters taking major abuse?  Upright SNA aerial work platforms/casters will show you how to take steps to prevent small problems from turning into large problems. Upright SNA aerial work platforms/casters is a brief informational on our casters, their use and their abuse.

REASON:

Because the casters are on the bottom of the upright scaffolding or your aerial work platform. They are the last to be looked at until there is a problem. Normally we check the structure of the scaffolding as we build it. The aerial work platforms we normally just jump up onto and go up. We have become too trusting with our equipment. Remember you’re in control of your Upright SNA Aerial Work Platforms.

PREVENTION:

To prevent problems with your UPRIGHT SNA AERIAL WORK PLATFORMS / CASTERS, start by reading the instruction manual.  It takes 10 minutes and will save you time and money. When inspecting your equipment start at the bottom with your casters. Check them for string and other debris. Make sure the brakes work by pushing them down to lock them and pulling up on the lever to unlock them. Check to make sure your Upright Aerial Work Platform casters rotate side to side easily with the brake-off. So if you check your casters every morning and look for string and other debris that can wrap itself around your castor. Now is the time to remove it not later. By ignoring this and using the scaffolding the string or other debris will continue to wrap itself tighter and tighter around your castor hub. Once that happens you will need to take your castor apart and clean out the debris and then reassemble your castor. This will take you about a half hour to 45 minutes per castor. This equates to time and money.

Platform lifts #casters this is a 5 inch castor used by an insulation contractor.
CASTER IN LOCK POSITION
Platform lifts #casters I removed the string and they had a new castor.

 

 

Casters taking major abuse. Upright SNA aerial work platforms/casters will show you how to take steps to prevent small problems with your casters turning into large problems. I hope the above article helps you prevent major problems with your casters. YOU MAY ALSO CONTACT Joe Foot AT 707. 799. 8902 or email me at Joe@uprightSNA.com.

Upright Scaffold North America likes to say,” if you need to get up get upright with Upright Scaffold North America.”

 

 

,FIX MY ALUMINUM SCAFFOLDING EXTENSION FRAME

 

DAMAGE:

To fix your aluminum scaffolding extension frame we will need to know the problem. This three rung double wide extension frame is missing its bushings.

The missing bushings are what connect the extension frame to the bottom frame. After time these get beat up or lost.

FIX IN THE FIELD:

Fixing your aluminum scaffolding extension frame in the field requires the replacement bushing and the self-tapping screw. You will see from the pictures below the sequence process for replacing the bushing in the field.

This double wide extension frame is missing its bushings.
This shows them lining the holes up and getting ready to insert the self tapping screw

 

This shows the missing bushings at the bottom of the frame and the self tapping screws hole connecting the bushing to the frame

 

this shows bushing in place for self tappiing screws inserted
this shows the bushing in place and the self tapping screw and place. This frame is ready to go.

 

PREVENTION:

Read your owners manual regarding maintenance. By checking your scaffolding daily before it goes out you can catch loose screws or broken rivets. These are the two methods of connections that are used by the manufacturers for connecting the bushing to the frame. It takes less than 10 minutes to read the manual and that time can save you hundreds of dollars.

CONCLUSION:

In fixing your aluminum scaffolding extension frame you will need to know the problem in this situation it was the missing bushings. As you saw above they are easy to replace and if you have any questions please feel free to call me Joe foot at 707. 799. 8902 or email me at Joe@uprightsna.com.

As we like to say at Upright Scaffolds North America is,” if you need to get up, get Upright with Upright Scaffolds North America”