Demolition costs: Implosion vs. disassembly

[WARose]

Demotion estimating is a little out of my line (and before anyone asks: I don't have RS Means). In any case, I've got a 3 story building with some industrial equipment in it that a client wants to disappear. The question has come up: take the thing down piece by piece vs. implosion.....which one is cheaper?

I think I can figure the costs for the piece approach.....but for implosion? I don't have a clue. Anyone know some numbers? Thanks.

 

[JStephen]

I don't know that I've seen anything that low imploded- if it can be pulled down with a trackhoe, that's probably the way to go.

 

[IRstuff]

We wrecking balled one building at an old facility, but it turned out to be non-trivial, due to either extraordinarily strong concrete or gross over-design; probably the latter, since it was built at the height of the Cold War for a defense contractor, and it was the administration building. In contrast, the building for the engineers went down pretty quickly.

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[Lomarandil]

What is the building material and construction type?

How is access for heavy equipment (both physical space and soil condition)?

Any risk of environmental contamination from the previous industrial process?

Any nearby structures to protect, or non-industrial neighbors?

----
The name is a long story -- just call me Lo.

 

[WARose]

What is the building material and construction type?

Braced steel building with deck siding.

How is access for heavy equipment (both physical space and soil condition)?

Very good. I see no issues there.

Any risk of environmental contamination from the previous industrial process?

None.

Any nearby structures to protect, or non-industrial neighbors?

None.

 

[IRstuff]

Is there potentially better revenue from the remains for the components to be intact, i.e., is there any reuse value associated, as opposed to purely scrap value?

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[WARose]

Is there potentially better revenue from the remains for the components to be intact, i.e., is there any reuse value associated, as opposed to purely scrap value?

There might be....I don't know. Right now I am focused on demo cost......and this is a hoop the client has requested I jump through. If anyone has any costs, I'd appreciate hearing them. I have some demo numbers....but nothing as far as bringing it down with explosives.

 

[hawkaz]

Are there any construction recycling requirements in your area? Some locations require that demoed materials be sorted and sent to various recycling facilities.
Can be expensive and time consuming.

I saw this happening at a site in Chicago a few weeks ago. See the link below for their rules and regulations.

https://www.cityofchicago.org/conte..._Recycling_Rules_and_Regulations_03_01_06.pdf

 

[IRstuff]

There are some random bits of cost info on the web:

http://www.buildingjournal.com/commercial-construction-estimating-demolition.html

https://www.bbc.com/news/av/uk-engl...northampton-greyfriars-bus-station-demolished

https://smallbusiness.chron.com/determine-building-demolition-costs-15447.html

https://domicology.msu.edu/Upload/Approaches-and-Associated-Costs.pdf

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[RickyTickyTavi]

Can you call a demo contractor to get budgetary numbers (plus/minus 50 percent)?

Thats typically what I do if owners insist on me putting me on the spot for a cost estimate. Most contractors I work with are generally okay with it. Especially if I recommend them for bids later.