New Main Hospital, Site Park, and Underground Garage Construction Progress Update #8

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1 New Main Hospital, Site Park, and Underground Garage Construction Progress Update #8 Date: July 1, 2009 From: Gary Claar Engineering Services June was a very active month on site. The concrete walls around the entire lower level are now poured, a majority of the first floor concrete structure is installed, and parts of the second floor are being shored up, formed, and poured too. The numerous concrete columns of the building keep marching upward to the clouds as every day several columns are either being poured, or the formwork for some that were recently poured is being removed for re-use on the next series of columns to appear. Many of the concrete pours are now being scheduled for 1:00 a.m. in the morning and lasting 10 hours. One of the pours placed 1,100 yards of concrete in one day. That is a big pour! The contractor in charge of the concrete work is getting into a regular rhythm now as parts of one floor is finishing up while another floor above is formed up and poured. So, as you might imagine, this keeps our crane operators on their toes and keeps them very busy each day picking up loads of formwork, steel reinforcing bars, hoppers of concrete, etc. and placing them ever so gently into place at the direction of workers down below. Now for some fun facts regarding the amount of concrete and steel reinforcing bar that are being installed in the building: Concrete: A total of 33,000 yards of concrete in the footings, floors slabs, columns, beams, and basement walls. If you poured a 6 foot wide sidewalk for Dorothy, the scarecrow, the tin man, and the cowardly lion to travel on, they would be able to walk 85 miles on the sidewalk to Kings Island. Isn t that where the Wizard of Oz lives? It will take 3,300 concrete trucks to deliver all the concrete. If those trucks were lined up end to end, they would extend 25 miles down the road. Steel Reinforcing bars: 4,332,000 pounds (or 2,166 tons) of steel re-bar in the concrete footings, walls, floors, columns, and beams. It you take a typical 5/8 round re-bar being used in the building and laid 10 long pieces end to end, the re-bars would go approximately 117 miles. Feel free to share these tid bits of information to your staff, patients, friends, or family members. They may find this interesting and fun to think about. I ll share other facts about our building in future construction updates. 1

2 An aerial view of the site looking towards the east. Aerial view of the site looking north-east. 2

3 Multiple cranes lifting items in place (left photo). Floor formwork being lowered into place for a second floor area (right photo). Round manhole pipe which extends down to access the sump pumps which will manage all the water around the perimeter of the lower level (left photo). Blue post tensioning cables rolled up which will reinforce the concrete slab above the cafeteria area (right photo). 3

4 An empty hopper which just placed concrete in the forms of a column in the second floor area. Roof slab above the 2 nd floor area being shored and formwork installed (it was a purple haze kind of day in Columbus, Ohio) 4

5 An example of multiple steel re-bars installed where two concrete beams intersect on the second floor. View from the L Garage. 5