Manitowoc Lattice Boom Crawler Gross Load Calculation

Calculating gross load for Manitowoc Lattice Boom crawlers. A good resource for crane operators preparing to take the NCCCO Manitowoc LBC specialty exam.

[@williamthomas7107]

Thank you for the input on the Load chart problems.. Great info.

[@LuisGarcia-di7jh]

I just got my results on the exam. 97 core 89 load charts( i was no paying attention for sure...) Once again, thank you very much for the help!!!!

[@LoadChartLab]

Congratulations on passing the exams!! Nothing wrong with an 89 on the specialty exam.

[@jsantiago7698]

Thank you for your videos! I bought your load chart practice questions on Amazon and was wondering if you sell any practice questions for the core section? Thank you.

[@LoadChartLab]

I'm sorry I do not sell core practice questions.

[@LuisGarcia-di7jh]

I am taking my NCCCO exam next week and, by watching your videos, i´ve learned a lot! i`m from Europe from a non English speeking country and my worst nightmare is to get lost in translation during the exam due to anxiety! do you have any core questions or specialties? About the load chart in my opinion you could not be more cristal clear!!! I had just to use one of my 2 working neurons :) thank you for caring for us!

[@LoadChartLab]

email me at [e-mail] and I'll send you some practice questions for the core.

[@LoadChartLab]

If you are native Spanish speaker they do offer exams in Spanish.

[@LuisGarcia-di7jh]

@@LoadChartLab i am not. I am portuguese. And i want to do it in english! Uuh you can call it a question of pride to adapt to and adopte the country!!!

[@xkipm]

@@LoadChartLab احتاج اسئله

[@steveallarton98]

I must have missed something on your first example - how did you get to 1288 lbs for the wire rope deduction - at 2 lbs/ft and 6 parts line, that puts the boom point at 107 ft from datum. Is that correct ? Also, do you not consider the wire rope around the block sheaves ? For example a 6 part line on 2 foot diameter block sheaves is just short of another 20 feet of rope - or 40 lbs, or am I just being pedantic ?

[@LoadChartLab]

You're right. Should be 1896 for 170 boom, 85 radius and six parts--( boom point at 158 x 2lbs per foot x 6 parts=1896). I got a little sloppy with my numbers with my focus on the steps in the process and laying out the deductions. But if you're sloppy with the numbers the process won't work--LOL. Thanks for pointing it out--I might fix it when a have a day off.

[@steveallarton98]

So that’s the deliberate mistake to check that we’re all awake ! Great information and thank you for sharing your expertise.

[@69ss95]

The load charts from mf

[@espinosanester2886]

where should look to either buy or ask for a multitud of practices problems?

[@LoadChartLab]

Hello Nestor, Sorry for the late reply. Been some long days. Go to Amazon and you can purchase a set of 42 practice problems for the Manitowoc LBC. Here is the link www.amazon.com/Manitowoc-LBC-Practice-Problems-Set/dp/B07G7HBMMT/ref=sr_1_1?crid=2YR8L9KX3O6A4&keywords=load+chart+laboratory+manitowoc+lbc+practice+problem&qid=1661399440&sprefix=Load+Chart%2Caps%2C93&sr=8-1 You can also get practice problems for the Grove TLL.

[@jeremysisk1489]

Do you still sale these practice test . And did you ever come up with a practice test for the core

[@LoadChartLab]

I still sell load chart practice problems for specialty exams (Grove, Manitex, Manitowoc LBC). I do have a database of core questions (probably 300-400) but I do not have those for sale. Send me your email address and I'll send you the core questions.

[@jeremysisk1489]

@@LoadChartLab i want to buy the lattice crawler load chart practice. And if you have tower id like to have those to

[@austingibson9291]

The load chart wasn't the problem on the computer based test but the questions were a little all over the place. I guess i wasn't as prepared for the crawler specialty as the TLL.

[@LoadChartLab]

Yea, if it was just the load chart problems it would be much easier. It's the other 18 questions that get a lot of guys. Hang in there and give it another shot. A good book I recommend to all operators is the Crane and Rigging Training Manual by Ronald Garby. This book, along with the OSHA Regs, can help with what I call the "general crane knowledge" questions.

[@austingibson9291]

Yeah I'll check it out. I know I was only a question or 2 away from passing but I love crawlers the most of any crane so it's important to know this stuff head to toe

[@LoadChartLab]

Austin . . . I've had operators fail the computer based test, and retake it within a couple of weeks. They told me the retake was the exact same test from the first time the took it. No guarantee if you took it again very soon you would see the exact same test, but you might??

[@maxriboss]

No they do that unpurpose, and they try to fail you with how they try to mislead you, from what's in the osha book, and there own.. just study, you'll get it

[@austingibson9291]

@@maxriboss well I guess it didn't matter anyway. I got certified in mobile cranes in 2018 and was so excited, then no company would hire me for the lack of experience. I think I'll just admire them through social media from here. Smh!!!!!!!!

[@lancelarymore1667]

You say you prefer computor based exam, why ? I'm watching all your videos now getting ready to get recertified for 2nd time and I keep hearing I should have sighed up for re cert on computer based exam. Operators talking me its easier and much faster and now 12min and 30 into this video I hear you mention you like the calculator in the computer exam and you say you prefer this much more so than written. Plesse advise ? I'm worried bc I got to be re cert by dec31lol. And I'm taking written 14th this week .

[@LoadChartLab]

For me I was in a small cubicle all by myself without distractions. Also you know your results immediately and if you didn't pass, you can retake the exam the next week. Also the calculator is part of the computer testing program--you don't have to physically manage a calculator. The computer program will also tell you if you've accidentally skipped a question, or reminds you to go back if you intentionally skipped a question. It really boils down to personal preference--the exam questions are going to be the same. Good luck on recert exams--you do know that the specialty exam is only 10 questions and 7 out of 10 are load chart questions?

[@LoadChartLab]

Also if you're taking the manitowoc, watch out for retracted crawlers. I emphasize this a lot in the videos because it is very common for CCO to throw this curveball on the manitowoc LBC. Most questions will have extended crawlers but don't be suprised to see one question with crawlers retracted.

[@lancelarymore1667]

@@LoadChartLab all great advise . So I'm still watching your videos. I know them word for word I can almost narrate them word for word lolo . I am 100% confident now bc of your videos. I will watch for retraceted crawler questions. . I'm confused this tho does it mean my crawlers would be retracted as in (sucked up under my super structure) ? I not familiar with that Terminology

[@LoadChartLab]

@@lancelarymore1667 retracted crawlers are exactly what you describe (sucked in under the superstructure). Retracted and extended are the terms used in the Manitowoc LBC charts. In the chart there will be a column for being set up with crawlers retracted (sucked in) and a column for crawlers extended. The difference in capacity between the two set ups is pretty big. The data table for each problem will have a box for crawler set up and in the box it will say extended or retracted. Another type of question I've heard about but not seen my self is where they are having you make the pick off the jib and ask for net capacity, with crawlers retracted--this is a trick question. There is not a chart (at least for the CCO test) for lifting off the jib with crawlers retracted. -the correct answer would be 0 or no capacity.

[@maxriboss]

I took the nccco test and it had the hose reel as a deduction for the boom truck test,,why????

[@LoadChartLab]

Sorry for late reply. If it is listed as a required deduction in the load chart notes then it must be deducted. From an engineering standpoint I don't know. I'm guessing they are making the assumption the hose reel adds additional loading that must be accounted for.

[@69ss95]

It's an option on the load chart..and part of a load over tipping axis if I remember..look at manitex load chart

[@maxriboss]

@LoadChartLab I found it thank you. Passed my reverts, just love making sure I'm up to date on my knowledge

[@ryanhornbeck8711]

Do you have to show how you worked out the problem ‽ and or show the formula for each question?

[@LoadChartLab]

The exam is multiple choice. You do not have to show your calculations. If a guy was a good guesser he could simply guess--but that doesn't usually end well--LOL.

[@bradylaughlin3653]

@@LoadChartLab He is right guessing likely wouldn't be a great idea because typically they have very close answers missing one of the deductions

[@LoadChartLab]

@@bradylaughlin3653 Yes. They do a good job making a wrong answer look like the correct answer.

[@RandomOck1104]

Gross is before deductions, net it after deductions. You got it backwards

[@LoadChartLab]

Thanks for your input. This tutorial applies to a very specific type of problem found on CCO exam--gross load problems. For this type of problem gross load = object weight + deductions. There is normally at least one problem on CCO specialty exam where this formula is needed. The method outlined in the video will result in the correct solution for a gross load problem. You are thinking about gross capacity. Gross capacity is the cranes's capacity before deductions and it is found in the load chart or it could be the line pull capacity. Gross capacity is used to find the crane's net capacity. Net Capacity = gross capacity - deductions. The majority of problems on CCO exam are net capacity. There is a separate video for net capacity calculation and there are also several videos showing the solution for practice/example problems.