Demolition 7316 Wisconsin (Part 1)

[@mariotorres6287]

Watching the concrete crusher attachment on that Case excavator was fun. Almost hypnotic as the operator methodically crushed the panels to sort our the rebar. Another great demo video from John Wetmore. Keep them coming.

[@wagonmaster6997]

The Google street view was taken right before your filming. Shows the safety fencing and all the windows out.

[@Dave_9547]

I have to ask why the worker on the higher floor didn't take off the shackle before it was fed through the hole in the panel. That way it didn't have to be handed up as he reached down to get it. It would seem to be a much safer way to do it since he already had the cable in his hands.

[@constructionwatcher5381]

A very interesting project. Thanks John. I've seen a number of building erected with pre-cast panels, but haven't before seen one built with them demolished. Makes sense to take them down the same way they were built. It's interesting what you can see when you stand back that seems hard to see when you're doing the job. Seems obvious it would be simpler for the fellow on top to remove the clevises before putting the cables through the holes, so he would already have them with him when he's connecting the cables. It was nice to see the concrete pulverizer in action. I'd never seen that before either. But I wondered why they don't haul the panels off to a place where they have more room to do that instead of doing it in such a tight site. It looks like the brick infill behind the pulverizer were designed as finished walls. So they were once exposed?

[@JohnZWetmore]

Here is a demolition of a building with precast panels. The panels came down when the steel structure came down. kzbin.info/www/bejne/Z5S4epqVdtyWbM0 The building on Wisconsin Avenue was in a tight space, so they had to use more care.

[@JohnZWetmore]

I wasn't there to see it, but I think they probably added the concrete rubble from the panels to the dirt and rocks they were using to fill the underground parking garage.

[@JohnZWetmore]

When the building was constructed in 1968, the brick was probably exposed, or they would have gone with cheaper cinderblocks if it was going to be hidden from the start. I don't know when they covered it over, but right after the oil shocks of the 1970s is a possibility if they were trying to add insulation.

[@constructionwatcher5381]

@@JohnZWetmore Thanks, John. I was wondering why the filled the basement. I'd think it would be excavated again for the new building. Maybe to stabilize the side walls of the excavation until they are ready to build?

[@constructionwatcher5381]

@@JohnZWetmore Thanks for the link. Looks like I missed that one. You're right, that doesn't look like a method that could be used in the narrow streets downtown.

[@andyhughes5885]

Happy New Year John

[@JohnZWetmore]

Thanks.

[@_nelson]

I see there Street panels cement use remove them looks slow process but safety comes first

[@barbaraestrada5956]

What is this building

[@JohnZWetmore]

It's the office building in Bethesda, MD, on Wisconsin Avenue between Hampden and Elm. It used to have a bank.

[@jamesmclaughlin9894]

Attaching steel wire strops against sharp concrete edges is not good practice. Also, before attaching the strops to the second panel, the plastic deformation of the strops is clearly seen. I would have stayed well away from that little operation..

[@brucemartini2288]

if holes are needed to remove the panels, how were they Installed?🤔😆

[@harmen4839]

@john happy newyear

[@JohnZWetmore]

Thanks.

[@jimrichards3916]

Not much point wearing a safety harness if it's not tied off to anything!

[@JohnZWetmore]

They have a cable hooked up to the center of their backs. It isn't always easy to see because of the camera angle.

[@clauswerle]

great