Old Structures Engineering

Progress Is Always Exciting

by Don Friedman on December 18, 2018


Our project at Belvedere Castle has been moving along nicely. The AEC team – the Central Park Conservancy, Graciano, 53 Restorations, Indus Architects, and OSE – have been moving along with surprisingly few delays caused by site conditions. The showy part of the project is, of course, the fake-ruined castle that is the centerpiece of Belvedere, but there are other interesting parts.

The northwest pavilion is an open wood shelter on the main terrace level that is being altered, sort of. It was always meant to have a small tower and there was some kind of tower there originally, but the remnants of that were removed in a previous alteration. Our analysis for putting the tower back suggests why it wasn’t there: it was somewhere between very difficult and impossible to make the roof framing work if we only used wood structure, because the tower took the place of one of the main corner legs supporting the roof. Since it’s 2018 and not 1872, we used some steel and got everything functioning correctly; most of the wood structure is being maintained as the new steel supports are put in place to enable the tower. The picture above is a steel bent being fabricated in the shop. The pictures below are the bent is being hoisted into position and then finally in its permanent spot, next to the 140-year-old timber of the roof.



Not Yet Done

June 19, 2018

It sneaks up on you, but we seem to have passed 1000 blog posts. There are about a million buildings in New York and almost 400 years of history…I don’t think we’re running out of material soon.

Read the full article →

Post Literacy

June 11, 2018

Our work.

Read the full article →

Signs of the Times

March 10, 2018

We’re looking forward to the project start up.

Read the full article →

Everywhere I Look

February 10, 2018

I was up on the 40th floor of 7 WTC for a SEAoNY conference. It’s nice to see so many of our projects in one view.

Read the full article →

A Current Project In Miniature

December 13, 2017

Another picture from the Botanical Gardens train show: Belvedere Castle in Central Park. Our project there, to restore the masonry and the wood pavilions, has recently gone to contractors for bids and should be in construction soon. Belvedere is a unique structure, combining thick ashlar masonry walls, wrought-iron beams, and stone-slab floors. It was built […]

Read the full article →

Angela Nappi

December 5, 2017

A short note for a big event: Angie has passed her exams and is now a New York State Professional Engineer.

Read the full article →

Catching Up On People

November 8, 2017

Two interesting articles on firms and employees: on office manuals and new employees, and on emerging professionals. Linking to them is my way of saying that I’ve neglected talking about people for a while and we’ve been hiring. Our new people, in alphabetical order, are: Tawhid Chowdhury, who has a Bachelors of Civil Engineering from […]

Read the full article →

Through The Net

July 2, 2017

I was up a scaffold last week and took this shot through the safety netting. We have four projects among the visible buildings, including the Langham.

Read the full article →

OSE Blog FAQ

May 8, 2017

Seeing as how we’re north of 500 blog posts (as of May 2017), it’s probably too late for a Frequently Asked Questions post, but here it is anyway. This is the blog of Old Structures Engineering. Most of the posts are written by me (Don Friedman) but not all. Topics include pretty much anything touching […]

Read the full article →