Category Archives: Contractors

Pour the Perfect Modular Pit Easily

Anchor Bolts Level NutsOne of the biggest concerns that customers have is regarding the pit. Every elevator needs one, including your new modular elevator. You want to make sure you do everything right for when the elevator arrives, and this article will give you some tips to make it easy. By taking some time now, you can avoid issues and problems down the road.

On the surface, it seems easy enough.  Dig and pour a concrete pit for the hoistway, with cast-in-place anchor bolts in the corners. But, when you mix in the need to engineer the pit foundation and add reinforcements based on the elevator’s pit reactions, all the while accounting for the job site’s soil conditions and your local code requirements, it can seem more daunting. Keep in mind though, we supply the necessary information, plans, and even a template (if requested) to help out.

So, to put everyone’s mind at ease, let’s cover the basics on not only the pit but also the foundation for the modular machine room, if your project is going that route. You can also find this info on our website for easier access later.

  1. Typical pits have 8” thick walls and 12” thick floors. However, always consult your pit layout drawings for precise measurements for your specific job.
  2. If you have a sump hole, cover it with a non-combustible material, typically a sheet of metal.
  3. Pour a concrete slab for the modular machine room, if ordered. Purchase epoxy anchors to bolt it to the foundation after it is set. If the machine room is not adjacent to the hoistway, piping and electrical must be run underground or overhead. Coordinate with PME and the installer to determine any building preparations needed to accommodate this.
  4. Once the pit has been poured and the anchor bolts are in place download this Pit Drawing Form. Fill out all the blanks with exact measurements and make sure to include the project name at the top. Email the form to us. With this completed form the holes on our hoistway for the anchors will be as accurate as possible.

More detail and tips include the following:

Picture8Pit Depth – You only want to pour the pit once so, pay close attention to these instructions. The pit should be exactly 4’ deep, measured from top of finished floor to pit floor. Our tower’s legs are 3’11” long, made to sit an inch off the pit floor, with grout underneath. This allows for some adjustment if the pit floor isn’t perfect. The adjustments are done by putting a ¾” thick leveling nut and washer on the anchor bolts before lowering the tower down. Adjust the nuts as needed to plumb and level the tower. Install washers and nuts on top of the tower base plates and tighten. Grout below the base plates.

What do you do if the pit is too deep? The base plates can sit more than 1” off the floor, but if the anchor bolts are too short as a result of the extra depth, extra in-field welding will be required to produce a stable connection.

Err on the long side on the anchor bolts. They should protrude a minimum of 3.5” from the pit floor, but making them a few inches longer poses no problem with installation and gives you breathing room if the pit is too deep.

(On the other end of the spectrum) Pit too shallow: If minor, this could require grinding away a bit of concrete around the anchor bolt. If major, the pit might have to be re-poured. Avoid this at all costs! Too deep is better than too shallow!

Pit.jpgLength and Width – The pit should be the out-to-out steel dimensions plus 1” on all sides for clearance when sliding the tower into the pit. Note that the enclosure of the elevator shaft stops at the top of the pit. If needed or wanted, for above-ground pits, we can extend that enclosure down further. If the pit is too big, it’s not a big deal. However, you’ll need to make sure it’s properly flashed to keep out water and fire caulked to maintain the fire resistance of the hoistway.

Pit too small: Oops, you’re going to have to tear out some concrete. No easy fix for that.

Wall protuberances – The tower slides in right along the walls on its way to the pit floor, so it will catch on any protrusions. Once it’s set, there are openings in the structural framing that piping can be run through. Before lowering the elevator, terminate any penetrations such as PVC liner or piping at the pit wall. Run any piping/electrical after the tower is set. Note that the diagonal rods are for stabilization while uprighting the tower and may be removed after bolting the tower down, if they’re in the way.

Sump hole in corner – The base plates sit in the 4 corners and need a solid surface to rest on. If your pit has a sump hole, make sure it’s at least 12” from any corner.

Pit 2Anchor Bolts – When you pour the pit, anchor bolt placement is very important for elevator installation as this directly effects where the modular elevator will be placed. Please make sure the distance of the bolts from building is right and make sure to include the building finishes when calculating where to place the “front” anchor bolts. Too far away can be bridged with flooring, drywall, and flashing. Too close means reworking of the anchorage.

Check Please – Check, check and check again! Measure three times. Check your prints twice. Cross square them. This is critical. Incorrect placement may require torching out the base plate holes, moving anchors, or other work to provide alternative anchorage. If you know in advance that the placement is slightly off, we can widen the base plate holes in the factory, which is easier than doing it in the field. We can also supply an anchor bolt template to make bolt placement a little easier and more accurate.

Other Pit Info – If the lowest stop is above grade, alternative construction can be used for the pit. The pit floor can be poured as a slab and then walled in afterwards with CMU. Also, the elevator shaft can be finished down to the pit level to provide the pit “walls.” Note that you should at least have a short stem wall to keep water out of the pit area.

Lastly, we want this to be a success for you. If you have any questions at all, contact our team. Our engineer, Tim House, is always ready and willing to help. Feel free to call or email him at thouse@phoenixmodularelevator.com. Here is a video that walks you through the process of installation. You may find it helpful.

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All Aboard – Modular Elevators

Train in DurangoThere was a time when black, steam powered locomotives would huff and puff into the station, take on water and coal, load up with cargo and passengers and the conductor would yell, “All aboard!” It signified the train was leaving the station and if you weren’t on the train and ready to go, you would be left behind in a cloud of steam, smoke, and coal dust.  The analogy has been used countless times when writing about new innovation and being a part of a movement forward or advances in technology.  You don’t want to miss the train and be left behind.

The elevator industry is on the cusp of just such a transitional move forward and leading the way with the innovation is Phoenix Modular Elevator. We have seen exponential growth over the past few years as people become more acquainted with the company and what makes us unique to the building and elevator industries. That uniqueness, to state it plainly and simply, is due to the fact that we offer a manufactured, commercial, quality elevator that is safer and faster to install than any traditional elevator available at a comparable price. Faster? Think days (in less than a week) not months for the hoistway and elevator to be fully installed and functional. Safer? No heavy rails to to lug around, no cab to install, and, most importantly, no open hoistway hatches to fall through.

Elevator technicians have confided with us, stating that Phoenix Modular Elevator has eliminated the most dangerous and time consuming aspects of the elevator install. Manufacturing a completed hoistway, with the elevator car and rails already installed, that is pre-roped and pre-wired makes all the difference.  But not all are ready for a new age.  There was a time when innovation, especially in regards to safety, was a paramount concern, but, inexplicably, today many are still holding on to old technology that puts installers at risk.

Fortunately for the workers, many are now starting to see the benefits of less potentially harmful physical labor.  It’s no wonder we are currently partnering with a major elevator manufacturer and elevator installers across North America.  They have come to the same conclusion we have: modular elevators are just much better than old fashioned elevators for the people that have to do the installing and the speed of the installation is better for the customer.

Modular elevators are a win/win all the way around.

Yes, you can ignore the trends, safety of elevator technicians, and the benefits of fast installation, but just remember that the train is leaving the station and you can either choose to get on board or ride the old steam locomotive to the dusty museum filled with artifacts from the past. The choice is yours, but keep in mind that as we continue to expand, opportunity abounds for those willing to partake. It is time to let go of the outmoded past.

If you would like to be considered to be an installer for Phoenix Modular Elevator just fill out the simple form here and someone will be in contact with you shortly. If you don’t engage with the future of elevators, someone else will just take advantage of the opportunity.

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Solving Problems with Prefab Hoistways

Urban Life 2Recently, we have been producing prefab hoistways for a major elevator manufacturer in the United States. These contain no installed elevator, just the hoistway. The company we are working with sees the benefits of faster installation, the safety of the installation, flexibility in design, and higher quality that we offer as opposed to waiting around for a stick-built shaft.

It is easy to see why: having a completed hoistway craned into place means saving time and that means saving money. But having a prefab hoistway means more than just fast installation. Here is a list of reasons why every hoistway should be a prefab….Click here for the rest!

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