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Emergency Demolition of Catherine’s Knob Tower - Controlled Demolition, Inc.

Monongalia County HSEM & MECCA 9-1-1 of Morgantown, West Virginia retained the consulting services of Marion Dougherty of Premier Construction Group, LLC (PCG) who, by extension, recommended the structural consulting services of Mark Malouf, principal of Malouf Engineering International (MEI), to asses observed structural problems with a 480’ guyed communications tower located on Catherine’s Knob near Fairview, West Virginia. That MEI assessment determined that the tower had “structurally failed” and was in imminent danger of collapse, at least partially, due to the observed damage from water which had previously frozen inside the legs of the tower.
Monongalia County instructed Premier Construction to proceed with the emergency demolition of the tower given the expected below freezing temperatures at the site that would have further compromised the structure if additional water had collected in the legs since last winter.
When Randy Orchard of Installtek Communications, LLC, the tower demolition contractor selected by PCG, surveyed the structure toward preparing a demolition plan and proposal, he quickly determined that the condition of the tower presented too great a risk to his personnel using traditional tower dismantling/demolition methods.
PCG contacted Controlled Demolition, Inc. (CDI) of Phoenix, Maryland, USA to perform the emergency preparation for and remote explosives felling of the structure. Using specialty explosives held in stock for emergency projects such as this, CDI’s three (3) man crew mobilized to the site and performed preparations for and the successful felling of the damaged, 480’ tall guyed structure in less than three (3) hours on Monday, November 16, 2020.
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Пікірлер: 626

  • @innercityprepper
    @innercityprepper2 жыл бұрын

    It must have been an emergency when a 10 count only took 7 seconds!

  • @ricknelson947
    @ricknelson9472 жыл бұрын

    As a Radio tech, I’ve been working in tower buildings since 1984. This confirmed to me how safe I would be in one of those reinforced concrete buildings, if the tower came down while inside. Looks like it just left a couple of scuff marks on the roof edges.👍 nice work

  • @puzzLEGO
    @puzzLEGO2 жыл бұрын

    Can’t wait for the channel ‘uncontrolled demolition inc’

  • @Mikelica69

    @Mikelica69

    2 жыл бұрын

    xD

  • @vladimpaler9274

    @vladimpaler9274

    2 жыл бұрын

    😝

  • @timekiller11

    @timekiller11

    2 жыл бұрын

    Next week, 6 homeless guys armed with a box of dynamite vs a skycrapper.

  • @zephrizi9034
    @zephrizi90342 жыл бұрын

    It's always impressed me how all that weight is on one tiny little bolt on a concrete pad and how well guying works to hold it all up.

  • @devherrick5775

    @devherrick5775

    Жыл бұрын

    Impressive but freaky upon first climbing

  • @theconnorhouston14
    @theconnorhouston143 жыл бұрын

    I was actually across the valley on a tower myself in Fairview doing a wave 2 upgrade and got to see this live. Incredible work.

  • @zlozlozlo
    @zlozlozlo2 жыл бұрын

    Poor Catherine, they made a short work of her knob.

  • @salvadormaduro587

    @salvadormaduro587

    2 жыл бұрын

    There are probably not many Catherine’s with a knob.

  • @TheNamesArif

    @TheNamesArif

    2 жыл бұрын

    looks like she's finally finished

  • @robgrey6183
    @robgrey61832 жыл бұрын

    Demolition crew: "Our work here is done". Cutting torch guy: "Job security till Christmas".

  • @atoka2206

    @atoka2206

    2 жыл бұрын

    I can't imagine how much tenstion stress built up in those struts bending over the hill I sure don't want to get hit in the face by that lol

  • @Sparky-ov1ot
    @Sparky-ov1ot2 жыл бұрын

    1.20 nice solid built shed, took weight of tower no problem.

  • @scootscootriot1020
    @scootscootriot10203 жыл бұрын

    It’s amazing that you can have a (small) crew arrive with emergency stock and plan and fell something like this before lunchtime. You guys are the best.

  • @railroadjim
    @railroadjim3 жыл бұрын

    Nicely dropped as usual! Crazy that the failure was caused by water intrusion, as I would imagine that has to be a known issue to be dealt with on all of these towers.

  • @willynebula6193
    @willynebula61932 жыл бұрын

    What makes this a great video, is that it has a detailed description of why this had to be brought down. Good job in and on the video.

  • @jadekaay
    @jadekaay2 жыл бұрын

    "Hey boss, Catherine's knob's gone.." *"Well if that's what she wanted"*

  • @JackMellor498
    @JackMellor4983 жыл бұрын

    Catherine’s Knob eh? Ahem ahem...as a Brit I cannot stress how differently that goes down...bloody wonderful 😂

  • @chouseification

    @chouseification

    3 жыл бұрын

    Considering it's an old term that came over with the colonists, it shouldn't be too confusing. Yes, in modern English it means a hummer, but in their English it meant "hill". It shows up a lot in New England down through hillbilly country, but not so much in the rest of the US.

  • @KillingDeadThings
    @KillingDeadThings2 жыл бұрын

    I love all the different capture angles. How different it appears to collapse from each angle is surprising. The first shot is sweet with the tower moving before the explosion sound reaches us.

  • @rudylittlewolf
    @rudylittlewolf3 жыл бұрын

    I sure would like to have those antennas that are on those towers after demolition!

  • @ThatOldStoner

    @ThatOldStoner

    3 жыл бұрын

    I thought the video title should be "how to make a ham cry".

  • @rdwatson
    @rdwatson3 жыл бұрын

    Impressive that the top of the tower landed right next to the bottom at 1:27

  • @irok1

    @irok1

    2 жыл бұрын

    That's when you know it's a good drop

  • @Mikelica69

    @Mikelica69

    2 жыл бұрын

    True

  • @GamerMason123

    @GamerMason123

    2 жыл бұрын

    Not sure how to explain it especially in scientific explanation, but I'm pretty sure since the center of gravity and the way to the tower falls that the top should ultimately not move essentially.

  • @Ocker3

    @Ocker3

    2 жыл бұрын

    Yup, I reckon they use this as one of their promo videos, folding something in half on itself has to make it much easier to chop up and cart away, without falling in your neighbour's yard :)

  • @KnutNukem
    @KnutNukem3 жыл бұрын

    1:25 That was cinematic level precision.

  • @jeniferbalansag5815

    @jeniferbalansag5815

    3 жыл бұрын

    Lullaby songs

  • @greglinski2208
    @greglinski22082 жыл бұрын

    When my son was about 11 years old he entered a Jaycee Relay Race. He’d never ran track before and didn’t know everybody wore shorts. He came in jeans, to everyone’s amusement. He ran the last leg for his team - and came away the fastest runner of the day, and made up considerable distance to win. This video made me think of that day. How I wish I had been able to see it, instead of only hear and read about it. I was a single mom and had to work. My son was an amazing athlete. ❤️

  • @dennyfrontier
    @dennyfrontier2 жыл бұрын

    I like how it politely fell on the little building and didnt hurt it

  • @Marauder1981
    @Marauder19812 жыл бұрын

    Wow, the engineers in the demolition team did an ace job. Well done!

  • @oisiaa
    @oisiaa2 жыл бұрын

    That shed is SOLID! Didn't even flinch when the tower touched it!

  • @timslager5966
    @timslager59663 жыл бұрын

    Your crews are fantastic and never cease to amaze me. Keep up the great work 👍 👍

  • @rumfordc
    @rumfordc2 жыл бұрын

    1:15 anyone else think this building was going to get pulverized and then feel dumb?

  • @markybear92840
    @markybear928403 жыл бұрын

    You guys are really great at your job. I still remember a documentary of when you felled the Travelers Building in Boston. How amazing the work you do!

  • @Akula114
    @Akula1142 жыл бұрын

    Excellent job! I loved the shot of the base as the uppermost antennae slammed into the ground right next to it.

  • @localcrew
    @localcrew2 жыл бұрын

    Those were some great angles. Thanks for posting.

  • @minusplus2023youtuber
    @minusplus2023youtuber3 жыл бұрын

    The way you described the reason behind the demolition reminded me of something from Life After People. The thing being water logged.

  • @exogator
    @exogator2 жыл бұрын

    The dude doing the countdown needs to rethink why he's actually counting down, he's acting like it's just to say all the numbers between 10 and 0. He should be treating it like someone's running for their life and he's giving them a short window to escape.

  • @csspezzzz
    @csspezzzz2 жыл бұрын

    As a Brit, the name of this tower is hillarious.

  • @Ellarian_Liara

    @Ellarian_Liara

    2 жыл бұрын

    her 450 ft stiffy was explosive

  • @JoeyLovesTrains
    @JoeyLovesTrains2 жыл бұрын

    1:21 laughed when I realized how light the tower was. Kinda assumed it would destroy the building, but no

  • @magicalfetus729

    @magicalfetus729

    2 жыл бұрын

    Yeah, it’s just aluminum.

  • @dentalnovember
    @dentalnovember2 жыл бұрын

    Great job pivoting off of that brick structure and not even breaking it. Looks like it altered the center of gravity to create the breaking point on the tower sending it back at you. I bet this was done purposely because I did something similar once cutting down a tree.

  • @Eyes0penNoFear
    @Eyes0penNoFear2 жыл бұрын

    Less than 3 hours from start to finish! That's some impressive work.

  • @hnccox
    @hnccox2 жыл бұрын

    Just read the description, less than three hours from prepping to demo, damn. Impressed 👍🏻

  • @jonathannorup3788
    @jonathannorup37883 жыл бұрын

    Its a sad day for the lose of a communication tower but that tower definitely gad to come down . Nice job and glad no one was injured

  • @BigSteve735
    @BigSteve7355 ай бұрын

    Cdi that’s awesome I was going thru all the videos to see if you guys had imploded any of the stuff around where I’m from and then found this one this tower was only a few miles from where I grew up! As always awesome job!!!

  • @ScrewThisGlueThat
    @ScrewThisGlueThat2 жыл бұрын

    Absolutely Amazing and a "Perfect Landing". I like it when a plan comes together...lol

  • @gungadinn
    @gungadinn3 жыл бұрын

    Well done guys. Looks like the OSB building survived the blast and tower felling unscathed.

  • @wspencerwatkins
    @wspencerwatkins2 жыл бұрын

    Really great footage, I love the multiple angles, especially the view from right at the bottom

  • @harrickvharrick3957
    @harrickvharrick39572 жыл бұрын

    The tower came down like a work of art

  • @SLO-Ride
    @SLO-Ride3 жыл бұрын

    I used to put up guidewire towers for long distance telephone (early 1980's). This was a rather soothing to watching one come down!

  • @seantaggart7382
    @seantaggart73822 жыл бұрын

    I love how you took down something that was gonna fall down to prevent harming others

  • @jasonguzman564
    @jasonguzman5643 жыл бұрын

    Perfect demo as always 👌

  • @dutch5501
    @dutch55013 жыл бұрын

    Excellent work!

  • @Quadflash
    @Quadflash3 жыл бұрын

    Beautiful engineering and execution

  • @hoobaguy4311
    @hoobaguy43112 жыл бұрын

    Those radios on the top are worth a fortune. I bought a storage unit for $200 and it ended up being full of 4g and 5g radios, high power equipment, everything on that tower basically. I sold it back to AT&T and made a substantial return. Best day of my life so far!

  • @JeffReeves

    @JeffReeves

    2 жыл бұрын

    Sick AW11 in your profile pic. I'm willing to bet the sales to AT&T *almost* made up for car project costs lol

  • @shannon9993
    @shannon99932 жыл бұрын

    I'm from near Phoenix, MD and it's pretty neat to see this stuff!

  • @AdamSteidl
    @AdamSteidl2 жыл бұрын

    Random recommended video for last week or two, time to watch it I suppose. Nice job.

  • @sledgedragon2677
    @sledgedragon26772 жыл бұрын

    This is literally a Battlefield levolution

  • @stefangilzene6083
    @stefangilzene60833 жыл бұрын

    Loads of respect for CDI. Another fantastic demo! Precise AF!

  • @nozrep
    @nozrep2 жыл бұрын

    fascinating! One of the coolest things I ever got to see live was when CDI was demo-ing an old decommissioned powerplant in Webster, TX, and my employers, as separate subcontractors, were tasked with saving and transporting the still good to use massive industrial transformers. Got to watch the workers torch triangles into the structural steel columns and then they literally pulled the structure down with their excavators!

  • @Renville80
    @Renville802 жыл бұрын

    That’s a lot of expensive equipment to write off.

  • @loganbaileysfunwithtrains606
    @loganbaileysfunwithtrains6062 жыл бұрын

    I’m impressed by how much the tower flexed before ultimately breaking apart, whoever designed that aspect of it needs a pat on the back

  • @davidsaks1244
    @davidsaks12443 жыл бұрын

    Seen from some great new angles

  • @jonmiguel
    @jonmiguel2 жыл бұрын

    Never even considered the "emergency demolition" of a tower before. Fascinating.

  • @PANCAKEMINEZZ
    @PANCAKEMINEZZ2 жыл бұрын

    "Look, the elevator! It coming down... Beaver for impact!" - a marine in the Uplift Preserve in New Mombasa

  • @dieterdietert7232
    @dieterdietert72322 жыл бұрын

    Its amazing how small the actual surface is thats attached to the concrete. looks like a postcard. really amazing.

  • @crawlinkingsnakegaming9794

    @crawlinkingsnakegaming9794

    2 жыл бұрын

    It's not attached. There is a round pin sticking up from the concrete and the base of the tower has a plate with a hole large enough for the pin to fit in. Tower is just sitting on the pin. Given the right conditions, guide towers have been know to bounce and jump off the ground. -old tower hand here

  • @donaldparlettjr3295
    @donaldparlettjr32952 жыл бұрын

    These guys are the pros when it comes to demolition

  • @Michael-fr6il
    @Michael-fr6il2 жыл бұрын

    This was executed really well.

  • @richshoemaker1707
    @richshoemaker17073 жыл бұрын

    Awesome, good work everyone.

  • @japanshungry5964
    @japanshungry59643 жыл бұрын

    Nice demolition the way it fell was amazing

  • @TIANIC121

    @TIANIC121

    3 жыл бұрын

    Hi

  • @tomatoking8090
    @tomatoking80902 жыл бұрын

    Dag..those boys are good. Didn't even damage the control House and the power line was a challenge also...good job.

  • @telegraph_hill
    @telegraph_hill2 жыл бұрын

    setting up all the cameras was probably the most time consuming part of the job! thanks for starting the video with the final countdown... i hate vids that stat with 20 mins of prattle. i formative comments, too!

  • @deanproctor2690
    @deanproctor26902 жыл бұрын

    Having the top land right where the base was….. friggin nailed it.

  • @tiredoldmechanic1791
    @tiredoldmechanic17913 жыл бұрын

    Another great job.

  • @SopwithTheCamel
    @SopwithTheCamel2 жыл бұрын

    Always a pleasure to watch professional’s at work.

  • @louielouiepks
    @louielouiepks2 жыл бұрын

    It would be interesting to see the damaged area on the tower before demolition.

  • @twiglet2214
    @twiglet22142 жыл бұрын

    Ok guys thanks for your support !

  • @TheOriginalBubster
    @TheOriginalBubster2 жыл бұрын

    They really know how to make a knob go down well

  • @StevenCasper
    @StevenCasper2 жыл бұрын

    Beautiful and safely done.

  • @ke6gwf
    @ke6gwf3 жыл бұрын

    My, what a tangled web CDI leaves!

  • @jake-fj2zi
    @jake-fj2zi3 жыл бұрын

    why is this so terrifying

  • @6Twisted
    @6Twisted2 жыл бұрын

    That giant thing is held up by that little tip. Damn.

  • @jacquesdeladurantaye9513
    @jacquesdeladurantaye95133 жыл бұрын

    You keept the video natural that was .... SO PERFECT IT WAS MAGNIFICENT WOW !!! 😎

  • @SatelliteYL
    @SatelliteYL2 жыл бұрын

    Wow that was pretty much perfect, the top landed right on the bottom. Nice

  • @noaht5191
    @noaht51912 жыл бұрын

    I love how it bounced off the roof of that building like it weighed about 2 pounds.

  • @chris_A8502
    @chris_A85022 жыл бұрын

    Skilled work guys 👍

  • @Theshinytrumpet
    @Theshinytrumpet2 жыл бұрын

    it is so cool, you can see the tower begin to fall before you hear the explosives

  • @JungleYT
    @JungleYT2 жыл бұрын

    *Brilliant work... Wow! How did they keep the elements vertical like that???*

  • @canadianpatriot2891
    @canadianpatriot28912 жыл бұрын

    Excellent job! 👍🏻

  • @johngullo9420
    @johngullo94203 жыл бұрын

    Cool video! You guys (and gals) are the gold standard when it comes to demolitions. South Padre Island and the RCA Dome were proof. 😀

  • @ayoitsyayo
    @ayoitsyayo2 жыл бұрын

    They knew damn well what knob meant and they still went with it

  • @Intamin
    @Intamin2 жыл бұрын

    It's interesting how relatively intact the antennae are when the tower comes down fully. I wonder if you could ride it down and survive...probably!

  • @geebee7529
    @geebee75292 жыл бұрын

    Kind of funny how the very top of the tower ends up right next to the very bottom like that.

  • @tob19
    @tob192 жыл бұрын

    catherine’s got a lovely knob tower

  • @Jacey2001
    @Jacey20012 жыл бұрын

    Amazing how the top landed almost perfectly at the base

  • @rugbynimbus
    @rugbynimbus2 жыл бұрын

    1:20 - To hear this thing falling sound like a drunk fighting to unfold an aluminum lawn chair was legitimately a shock.

  • @frenchy6254
    @frenchy62542 жыл бұрын

    Being a known problem, could they not have drained the water from the structure to then mitigate any further freezing/expansion problems?

  • @vertikalohigh9583
    @vertikalohigh95832 жыл бұрын

    That was the exact moment I lost cellphone coverage

  • @UtubeH8tr
    @UtubeH8tr2 жыл бұрын

    imagine that in a videogame your climbing a radio tower to fix it and suddenly in the distance you see them dropping one by one in succession towards you.

  • @davidschick6951
    @davidschick6951 Жыл бұрын

    It's kind of elegant, in a way, to see a tower gently leaning after the first explosion but before it breaks.

  • @dtrotteryt
    @dtrotteryt2 жыл бұрын

    That was SICK.

  • @paulallen9150
    @paulallen91502 жыл бұрын

    Whoever built the little structure that it landed on deserves a medal

  • @grandinosour

    @grandinosour

    2 жыл бұрын

    That building is steel and solid concrete so the communication systems can continue operations during most types of distruction.

  • @lmartinson6963
    @lmartinson69632 жыл бұрын

    The tower looks really heavy from a distance, but in the close-up it looks light. It almost looks and sounds like a ladder falling over.

  • @borisobrucicov8630
    @borisobrucicov86303 жыл бұрын

    That was awesome.

  • @moekitsune
    @moekitsune2 жыл бұрын

    I don't know why this is in my recommended but this is pretty interesting.

  • @valkman761
    @valkman7612 жыл бұрын

    Bunch of wires from one side of the tower are exploded, meanwhile everyone is amazed about the accuracy of the demolition.

  • @Chocolatnave123
    @Chocolatnave1232 жыл бұрын

    the angle made it look like it fell in on itself in one place, as opposed to falling over like it did

  • @workboot276
    @workboot2763 жыл бұрын

    I've had my knob tower demolished before too. Wild night in Vegas.

  • @MrBen527

    @MrBen527

    3 жыл бұрын

    Lol

  • @shadetreader
    @shadetreader2 жыл бұрын

    Exquisite precision!

  • @radautisuceava6195
    @radautisuceava61953 жыл бұрын

    What is enough to demols out just one set of tension cables to bring down a tower resembling old medium-wave amplitude towers?