Tag Archives: concrete

A Hot Day at Concrete

The Concrete Fly In this year was a little different.  Our friend Bob couldn’t make the trip because he was not in good shape.  Little did we know it at the time, but Bob was going downhill and would not pull out.  Knowing this now makes the visit to Concrete without him feel very different.  However, on the day, it was a lot of fun.  Plenty of interesting planes, some rather hot weather, finding spots in the shade to take it easy, watching the usual bunch of slightly awkward approaches and landings alongside plenty of perfectly normal ones.  There is nothing quite like being able to be so close to a runway while planes come and go with everyone happy to be there.  If you haven’t gone, do try and get there at some point.

This Bridge is Getting Very Advanced

A work-related post for today.  One of our projects is a light rail expansion and part of it involves the construction of a long span bridge.  This was not the original plan, but it is what we ended up having.  It is constructed by having forms for pouring a section of the bridge in one place and then, when that section is cured, a traveler moves out with the forms to pour the next section.  This is all done from a central column so the weight balances out as the bridge expands in each direction.

It is now very close to the final pours, and they will soon be done.  I got to go and see the progress recently and that included looking at the center section of the bridge where the gap between the two sections coming from each direction are close to meeting.  The bridge section is hollow, and you can see across and into the other half.  The final pours involve joining each end to the rest of the right of way and then, when they have been post-tensioned, this center section will be poured.  There will be more to do but this is a major milestone in the project.

Building a Bridge One Bit at a Time

One of our work projects includes the construction of a long span bridge for the light rail line to run over.  I have been down on many occasions since the construction started on this section but much of the early work was the preparation of the ground and the creation of the foundations for the final bridge.  We now have the piers in place and the construction of the bridge itself is underway.

This type of construction involves casting the bridge in sections in place rather than offsite and then bringing them in.  Steel supporters called travelers, hold the formwork in place as each section is cast.  When it is cured, the traveler moves out onto the new section and the process is repeated.  This happens symmetrically about the pier, so the bridge grows out in both directions at once keeping everything balanced.

The process moves quite quickly so, each time I go down, the bridge has got noticeably larger.  There are actually to sections happening at once to make the two halves of the bridge.  They grow towards each other, and the final casting will connect the two cantilevered spans to complete the bridge.  That will happen later in 2024.  The section of the bridge is hollow so it will be possible to access the insides of it in the future.  If I get a chance to go inside at some point, expect more images here.

Is Crossing the Runway Now a Good Idea?

At the fly in at Concrete last year, I was looking up the runway at approaching planes.  There are designated crossing points for the runway but people are able to cross elsewhere if they like.  I saw a guy with canes heading towards the runway.  He was not moving fast so I figured he would wait for the landing aircraft.  He kept moving but I was sure he would check whether it was safe to go.  Nope, he just kept on going while a plane was on short final.  At some point he must have realized that crossing a runway can come with some peril and he suddenly started moving a bit faster – not fast, but at least faster.  Meanwhile, the pilot on approach either didn’t see him or decided he would miss him so didn’t go around.  The whole thing was one of those that you witness with a little incredulity.

Concrete Fly In

The time between me doing something and its appearance on the blog can vary wildly.  Sometimes, I will aim to get something squeezed in here soon after it happens but that is the exception.  Usually, I have stuff posted out quite far in advance.  As I come up with new topics, they get added to the schedule and, if a topic doesn’t get written about promptly, it can really disappear into the distance.  Such is the case with the Concrete fly in of 2023.

There will be several posts that make it on here from that event in the coming weeks.  I have started writing them up but some of the specific topics will take a while to appear.  However, I shall start things off with a more general post about the fly in.  Held at Mears Field in the interestingly names town of Concrete, it is a popular gathering of planes from around the region.  There is a single runway running east/west in the valley and the planes park up on either side of it.  You are able to walk across the runway at a couple of locations (or further away from them if you want to avoid the air cadets) so just keep you head on a swivel.  The wind seems to change midway through the day, so arrivals were from the west in the morning and the east in the afternoon.

We set up at a spot near the threshold on the eastern end of the field and it provides a good location to watch the landings and the takeoff rolls.  Sometimes, it is easy to forget that you can walk around, and you find you have stayed in one place for ages getting similar shots.  I did try and mix it up from time to time but it was rather sunny and warm and the shade under the wing of a 170 was pretty appealing.

Since I was shooting a lot of light aircraft, I decided to try and make the shots more interesting by keeping the shutter speed low to emphasize speed.  The downside the this is that you are very close to the runway so the parallax effect is quite pronounced.  You can also just miss a ton of shots but why not have some fun.  Few of them are ones you can’t afford to miss.  It does mean a sharp nose is probably combined with a blurry fin.  This will really annoy some viewers and others will never notice.  Since I am shooting for me, I’m the only one that has to care!

More to come of some specific planes and events from the day out with a regular crew of aviation loons.

Tunnel Of Rebar

I was down on our project site having a look at the progress that is being made.  Most of the large columns for the elevated sections have already been built but one more needs to be done later than the others because it goes where a temporary road had been placed.  They are now getting to it and the rebar has been put together that will go inside the column to reinforce the concrete as it is poured and sets.  Looking through the tunnel of this rebar as it sat on the ground awaiting the pour, I loved the pattern that it formed.

Never Seen This Before And I Want One!

I was on one of the construction sites for the Sound Transit expansion to Federal Way.  As I walked around the parking garage that was under construction, I came across a piece of equipment I had not seen before.  I have seen machines for working the surface of concrete before but this one has two rotating elements under a seat.  The operator rides on the machine.  It looks like some kids version of a jet pack.

The better news was that a second one was in use on the upper levels of the parking structure.  When I got up the tower crane, I was able to shoot a little video of it in use.  It is a curious looking piece of machinery and, having never seen it before, seeing it in use really made me smile.

These are Concrete – Honest

Driving up to the summit of Mount Constitution, the road twists and turns a great deal.  Some of the curves have a steep drop off which will not end well if your vehicle were to leave the paved surface.  Consequently, there are plenty of concrete posts along the edge of the road to try and stop you going too far wrong.  However, it is so shady and damp within the woods the cover the side of the mountain, these posts get no light and have become home for moss.  It looks so thick that you wonder whether the car would even be scratched it you hit one!

1930s Architecture at Its Best?

There was a building at the bottom of the dam at Grand Coulee that was part of the dam infrastructure.  Looking down on this building, it seemed so in keeping with a certain generation of architecture.  Concrete buildings were in vogue at that time and they were very functional and lacking in much in the way of aesthetics.  Given that this was part of the work generation program of the Great Depression, maybe the focus was on function rather than form.  I wonder what someone would do with such a requirement if they were commissioned to design such a building today.

Space Age Visitor Center

There is a visitor center for the Grand Coulee dam.  Sadly, as with a lot of similar things, it was closed while I was there due to the virus.  While I couldn’t go in, I was rather taken with the structure itself.  I’m not sure when it was built but it has a bit of a 70s space age feel about it.  When in the park lower down the hill, it looks a little like a flying saucer has landed above you.  I bet it looks interesting when lit up at night.