[SML] Loading Bridge design...

[Richard Niederberg]

After Building(and getting the financing for) over 100 Theaters since 1970,
I can say that I give the structural engineer the weights of every arbor
full, plus the load of TWO 250 pound Stagehands, plus safe lighting. The
investors get this info, also, when they want to know how their money is
spent. [I’m a cautious Lawyer]
/s/ Richard Niederberg, Esq.
_________


On Mon, Jun 2, 2025 at 1:55 PM Bruce Bennett via Stagecraft <
stagecraft at theatrical.net> wrote:

> We have one 1970-era fly system. It was designed in England - Hall Stage -
> and is slated for full replacement.
>
> For building code from that era, NYC-specific building code might include
> something. I’ve had luck in other areas with this code.
>
> Bruce
>
> On Jun 2, 2025, at 13:10, Will Leonard via Stagecraft <
> stagecraft at theatrical.net> wrote:
>
> 
>
> Howdy,
>
> We are doing an install on a building that was built in 1976 & I need some
> information from the experts on the List:
>
>  With this project, we are having to work with an Architectural Firm who
> has no theater experience. We are having to explain to them how things are
> actually work/are used, which is not a problem because this is very common
> as we deal with remodels, etc.
>
> However, they are trying to tell us that the loading bridge is only
> designed for a Live Load of 20psf. This means that 1- we cannot build a
> scaffolding to reinforce the head steel (as they are requiring) but also
> that 2- the bridge cannot have the stage weights stacked on it as it was (&
> has been since the building first opened).
>
> What I am looking for is if someone can quote (or direct me to where I can
> find) documentation that the building codes of the 1970s required Live Load
> ratings (150 psf? like the stage floor). I don't want the client to not be
> able to use their newly installed counterweight system because of incorrect
> information, so I reach out to the group to see if I am crazy.
>
> Let me know what you think (dangerous request I know) ;)
> - Will Leonard
> Design Manager
> C: 281-752-1060
>
>
>
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