mfstructural
Structural
- Feb 1, 2009
- 230
Hey Everyone,
I'm a structural engineer and got my SE about a year and a half ago. I started my own business about a year ago and have been doing some small jobs on the side. My dad owns a construction company so I tap into his network for clients. Recently through my mother in laws friend I was called to a condo building because they had some questions.
It turns out that the condo association and property management company didn't maintain much in the last 20 years. In particular they called me there because their balconies are rusting and they wanted an opinion. They actually wanted me for a second opinion. They had gotten a report from a known firm in the area already. This all started because someone from the condo association hired an engineer to check the balconies and they reported their findings in their report. In short, the report stated the balconies were unsafe to stand on and no one was allowed to be one the balconies. Of course people can do whatever they want. But there were upset so they contacted the building lawyer. The lawyer ended up siding with the engineer and posted a sign in the lobby that no one is allowed on the balconies. They are obviously doing this to cover themselves.
This include two 5 story buildings (92 balconies in total). They consist of two C-channels cantilevering out from the wall. Smaller intermediate channels cantilever out in between the larger end channels. At the ends of the cantilevered channels, another large channel is picked up. A deck sits on the intermediate channels and a concrete deck is poured on top.
All the steel is rusted to different degreees, some really bad some not so bad. In any case, the engineer they hired gave them a set of drawings last week that calls for removing the entire existing balcony except intermediate channels cantilevering from the wall and rebuliding. The rebuilding consists of significantly larger members, like a 6x4 HSS as the header and sides.
There are several issues. It's difficult to replace the existing cantilevered channels. You would have to break the ceiling in the units to attach them...there is not a way to get in there. Additionally, in my opinion this is overkill. The majority of the people in the building are over 65 I'd say and don't have much money. I ended up showing up at the end of a board meeting to get the design drawings (assuming they wanted us to do the construction) but they decided it would be way to expensive to replace framing and railings. they also specified to galvanize the entire balcony, also extrememly expensive.
They are already assessing special assessments for the next 9 years on them!! crazy.
So my question here is what are the implications if I find another engineer or I myself do a design and go against what the other engineer specified? I know that as long as I'm sealing it and have shown that it works it should be ok to do this.
In my opinion, if you remove the concrete and decking (this is necessary because of water infiltration) and sandblast the existing, then repaint and specify that welds need to be a size and it works then you are saving some money and the design still works.
There is more than one way to skin a cat and I think this is a cheaper option that can save these people some money.
Thanks
Mike
I'm a structural engineer and got my SE about a year and a half ago. I started my own business about a year ago and have been doing some small jobs on the side. My dad owns a construction company so I tap into his network for clients. Recently through my mother in laws friend I was called to a condo building because they had some questions.
It turns out that the condo association and property management company didn't maintain much in the last 20 years. In particular they called me there because their balconies are rusting and they wanted an opinion. They actually wanted me for a second opinion. They had gotten a report from a known firm in the area already. This all started because someone from the condo association hired an engineer to check the balconies and they reported their findings in their report. In short, the report stated the balconies were unsafe to stand on and no one was allowed to be one the balconies. Of course people can do whatever they want. But there were upset so they contacted the building lawyer. The lawyer ended up siding with the engineer and posted a sign in the lobby that no one is allowed on the balconies. They are obviously doing this to cover themselves.
This include two 5 story buildings (92 balconies in total). They consist of two C-channels cantilevering out from the wall. Smaller intermediate channels cantilever out in between the larger end channels. At the ends of the cantilevered channels, another large channel is picked up. A deck sits on the intermediate channels and a concrete deck is poured on top.
All the steel is rusted to different degreees, some really bad some not so bad. In any case, the engineer they hired gave them a set of drawings last week that calls for removing the entire existing balcony except intermediate channels cantilevering from the wall and rebuliding. The rebuilding consists of significantly larger members, like a 6x4 HSS as the header and sides.
There are several issues. It's difficult to replace the existing cantilevered channels. You would have to break the ceiling in the units to attach them...there is not a way to get in there. Additionally, in my opinion this is overkill. The majority of the people in the building are over 65 I'd say and don't have much money. I ended up showing up at the end of a board meeting to get the design drawings (assuming they wanted us to do the construction) but they decided it would be way to expensive to replace framing and railings. they also specified to galvanize the entire balcony, also extrememly expensive.
They are already assessing special assessments for the next 9 years on them!! crazy.
So my question here is what are the implications if I find another engineer or I myself do a design and go against what the other engineer specified? I know that as long as I'm sealing it and have shown that it works it should be ok to do this.
In my opinion, if you remove the concrete and decking (this is necessary because of water infiltration) and sandblast the existing, then repaint and specify that welds need to be a size and it works then you are saving some money and the design still works.
There is more than one way to skin a cat and I think this is a cheaper option that can save these people some money.
Thanks
Mike