These panels are held together by spandrel plates. Engineers connected the panels in ascending order of height to ensure stiffness in the external columns. Kangaroo cranes played a major role in speeding up construction of the World Trade Center. The crane climbs up by activating the piston to increase its height. A one-side flex support structure helps the crane rest in position. The crane attaches frames to the base to stabilize it. Neighboring kangaroo cranes assist in assembling the frame lock. Spray foam insulation protects the building from fire for an hour or two. The core of the tower bears the majority of the gravity load. Columns in the core are welded together, and i-beam girds are attached at each floor. The collapse of the World Trade Center was a sequential collapse of its floors. Floor connections are important to understand the collapse.
About the Creator
Feelings Never Die
It is Valentine's Day again, and it bought back memories that were over fifty years old. It bought me back to 1971, and I woke up and I knew my baby was due today. I was big and pregnant, and I felt like I was about to burst wide open. Imagine my surprise when the doctor told my I had a due date of February 14. I couldn't believe it, and since my baby was due today, I felt I could indulge myself a bit. I had gained a lot of weight, and chocolate was on the no-no list, but I had came to the end of this pregnancy, and I hoped it would be okay, after all I would deliver this baby today. So I walked across the street to the grocery story, and bought myself, a peppermint patty, covered in chocolate, my favorite. Me and my Valentine's baby would enjoy it together.
By Susan Paytona day ago in Fiction
The Spell
Something stank, and Dominic couldn’t be entirely certain it wasn’t himself. He was aware of a certain moistness beneath his jacket, but then the amber infusion quietly steaming from the teacup in front of him raised questions too, and just beyond that, the woman gently caressing her own chin wrinkles with a blunt, grimy looking finger seemed as plausible a candidate as any. In fact, looking around the dimly lit room, plants and jars and objects that may or may not have been of animal origin cluttering almost every surface available, the smell seemed inevitable, though no more appealing for it.
By Hannah Mooreabout 9 hours ago in Fiction
Public Announcement Challenge Winners
For the Public Announcement Challenge, writers were asked to work inside voices built for control. These were notices, warnings, and updates meant to inform rather than confess. The strongest entries committed to that form and didn't break from it. Corporate memos, formal government alerts, and internal policy language were held consistently, allowing emotion, fear, grief, or humor to surface indirectly through pressure rather than declaration. The following poems recognize the voice of authority, and let human feeling slip through despite all its rules and restraint.
By Vocal Curation Teamabout 13 hours ago in Resources
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