Tag: carpenter

Pile Driving Crew at Work On The New Spaghetti Junction Interchange

Posted on by Nick Roberts
Andrew Miokovic Carpenter
Andrew Miokovic Carpenter/Pile Driver

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I spent a little time with a Pile Driving Crew earlier this week as they drove 70 foot steel beams into the earth to build a foundation for another bridge pier. These guys have to get these huge beams upright and then drive them into the ground using a single cylinder diesel “hammer”. They must make sure that the piling in perfectly plumb so that it can transfer the weight of the bridge directly to the bedrock. It is heavy, dirty work and the crew has to pay close attention to every aspect of the process to make certain that the pilings are properly placed

Pile Driver Climbing the "Hammer"
Pile Driver Climbing the “Hammer”

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Once the piling is positioned and ready to be hammered into place one of the crew must climb the hammer frame and set the hammer, a single cylinder diesel engine for driving the pile. In the image above he is climbing into position to do that. The line coming down to his back is a safety line to prevent him falling to the ground in the case of losing his footing.

Pile Driving Crew Positioning the "Hammer"
Pile Driving Crew Positioning the “Hammer”

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In the image above you can see the entire crew working to drive a second section of piling which will extend the length to almost 140 feet. Just above Andrew Miokovic’s shoulder there is a line where this second piling has been welded to a section that is already 65 feet into the ground. The man climbing the hammer is also the welder for the crew and has already welded the beam to the top of the one in the ground.

Pile Driving Crew Positioning the "Hammer" #2
Pile Driving Crew Positioning the “Hammer” #2

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In the above image the hammer motor has been energized and as soon as the man climbing down the hammer frame is clear the motor will be started and the pile will start descending into the earth about 4 to 6 inches each time it fires.

Hammerhead and Slope Wall
Hammerhead and Slope Wall

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Once the work of the pile driving crew is completed other crews of Carpenters and Ironworkers will start building another bridge pier such as the “Hammerhead” in this photo. It would be impossible to install the structural steel that will carry the new roadway without the unseen work that the Pile Drivers do to ensure a solid foundation. As in so many major projects there is a lot of work done that we never see or consider when viewing the final product.

Structural Steel Heading East
Structural Steel Heading East

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This final image in the post shows the structural steel that will eventually carry traffic east out of Louisville onto Interstate 64. I chose this composition to use the leading lines of the shadows to carry the viewer’s eye down along the sloping terrain and into the background. The three engineers  happened to come into the scene as I was composing the image so I attempted to capture each man just as he stepped out of the shadow lines.

All of these images are HDR images created using a three frame bracket set of +2, 0 and -2 EV exposures. I merged them using NIK HDR Efex Pro 2 and then took the merged file into Adobe Camera Raw where I adjusted the final Brightness, Fill Light, Recovery and Exposure. Once I was happy with the image I returned it to Photoshop CS5 where I performed a Levels Adjustment, Lens Correction where needed and applied Smart Sharpening. After that I added another layer where I tweaked the final details using NIK Viveza.

 

The Surveyor… William Moylan

Posted on by Nick Roberts
A Surveyor and a Carpenter discuss their next move while setting up forms on a pier near River Road in Jeffersonville, Indiana.
A Surveyor and a Carpenter discuss their next move while setting up forms on a pier near River Road in Jeffersonville, Indiana.

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The Surveyor in this image is William Moylan. I met William last year while he was surveying the placement of a caisson in pier 6 during it’s installation. I shot some photos of him that morning and ultimately chose one for a blog post. William saw the photo and thanked me for sharing it with the world. At the time he said to me that no one ever takes pictures of the surveyor. Later as we got to know each other he told me that his Mom in Ireland was able to see what he did for a living and the job he was working on because of that photo.

I was waiting for the crew boat yesterday when I saw William and a Carpenter working together. I liked the angle that I had and started shooting them discussing the task they were both working on. In this image they are making plans for William to ride up in the aerial lift to check the platform being placed for a hammerhead form that the carpenters are building on pier 8.

A Carpenter in aerial lift installing and leveling the floor for a hammerhead form on pier 8.
A Carpenter in an aerial lift installing and leveling the floor for a hammerhead form on pier 8.

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In this image you can see the floor of the hammerhead form that William and the Carpenter are leveling. William has climbed out onto the form floor with his measuring equipment and the Carpenter is moving into place underneath the form to make leveling adjustments.

Both of these images are three frame bracket sets of +2, 0 and -2 EV exposures that have been merged in NIK HDR Efex Pro 2 and finished in Aperture 3. For the top image I had to sue 100% anti-ghosting to eliminate the ghosting of the figures. In the second image I was able to get by with only 60% anti-ghosting. My advice regarding anti-ghosting is to strive for the lowest amount you can use in order to minimize halos and still achieve a reasonable final result.

HDR Construction Images of a Morning in November 2013

Posted on by Nick Roberts
Ironworkers from Local 70 preparing rigging on a caisson for the Ohio River Bridges Project in Louisville KY
Ironworkers from Local 70 preparing rigging on a caisson for the Ohio River Bridges Project in Louisville KY

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Today’s post is rather long on images yet short on words. I decided that what I wanted to show my readers was a series of several HDR construction images from a morning in November 2013. I thought sharing these HDR images from a single morning shoot would help my readers see how busy things are on the Ohio River Bridges Project.

I am always amazed at the skill and expertise that is required to do the work of Heavy Highway and Bridge Construction. Ironworkers, Carpenters and Operating Engineers must choreograph so many moves into placing the pieces of a single pier. The skill and commitment  to safety that they use to get the massive components in place is a sign of their professionalism and dedication to their respective trades. Any miscalculation when handling these pieces could result in slowing or stopping construction or even worse the very real possibility of the loss of someone’s life. For that reason the attention paid to properly performing each element in the process is paramount to safely accomplishing the task at hand.

Ironworker Local 70 member Travis tying rebar on a caisson. #2
Ironworker Local 70 member Travis attaching rigging to a caisson. #2

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Ironworker Local 70 member Travis tying rebar on a caisson.
Ironworkers Local 70 member Travis attaching rigging to the caisson.

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Crane booms in the sky
Crane booms in the sky.

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Ironworkers Sean and Travis rigging the caisson for the pick and placement in the pier casing. #2
Ironworkers Sean and Travis rigging the caisson for the pick and placement in the pier casing. #2

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Ironworkers Sean and Travis rigging the caisson for the pick and placement in the pier casing.
Ironworkers Sean and Travis rigging the caisson for the pick and placement in the pier casing.

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Starting the pick of the caisson as Travis and Sean stand by.
Starting the pick of the caisson as Travis stands by and Sean communicates with the crane operator through hand signs.

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Early morning on the Indiana Approach
Early morning on the Indiana Approach.

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Apprentice Carpenter Escarlett learning how to use a cutting torch.
Apprentice Carpenter, Escarlett, learning how to use a cutting torch.

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Placing a Caisson in the pier casing
Placing a Caisson in the pier casing on the Indiana approach of the downtown span.

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Placing a Caisson in the pier casing on the Indiana approach of the downtown span. #2
Placing a Caisson in the pier casing on the Indiana approach of the downtown span. #2

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Rigging the caisson for picking.
Sean and Travis rigging the caisson for picking.

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Sean and Travis rigging the caisson for picking. #2
Sean and Travis rigging the caisson for picking. #2

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I hope these HDR construction images help reveal the size and scope of the Ohio River Bridges Project as well as the my admiration for the skilled tradesmen and tradeswomen who perform these critical tasks. I also hope that the next time you see a construction site or meet a construction worker you will see their contribution to our way of life and the valuable part they play in building the world. Maybe you’ll even have a little more understanding of the important role that organized labor plays in providing skilled professionals that construct safe and dependable infrastructure for our world.

One final note about these images. All of the images in this post were created from three exposure bracket sets of +2, 0 and -2 EV exposures. They were merged in NIK HDR Efex Pro 2 and finished in Aperture 3. I use NIK HDR Efex Pro 2 because it does the best job I have found of reducing, and in most cases eliminating, ghosting when working with active subjects such as the men and women in these images. I finish the merged images in Aperture 3 because it allows me to control all the other variables such as color, contrast, sharpening etc in a non-destructive workflow.

HDR Photos of Progress on the Ohio River Bridge North Tower

Posted on by Nick Roberts

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North tower, R-5, base with Ironworkers climbing and tying rebar. Sunny, cloudless, day with 3 people visible on scaffolding.
Going Up

The Ironworkers and Carpenters have been very busy over the winter and the North Tower of the Downtown Span is progressing well. In this first image you can see the tower base as it stands today. The Ironworkers are tying the rebar for the next section and as soon as that is done the Carpenters will form that section for the next concrete pour.

I regret that I was under the weather for the first two months of this year and unable to get out to the Ohio River Bridges project very often. In looking back at the images from the end of 2013 I can see that there has been a great deal of progress. I’m back on the job now and will be posting on a regular basis as I did throughout the end of summer and into fall.

All of these images today are HDR images processed in NIK HDR Efex Pro 2 and Aperture 3. As is my standard practice I shot everything handheld in three frame bracket sets of +2, 0 and -2 EV exposures. I applied 60% anti-ghosting during the merging of these three exposures and used the Balanced Preset as my starting point. After merging them and applying the preset I went back into the tone mapping settings and changed the Detail slider to Accentuated and the Drama slider to Deep. That is all I did in NIK HDR Efex Pro 2 before returning the merged file to Aperture 3 where I adjusted the color channels, sharpening, contrast and applied a small vignette.

HDR photo of Four Ironworkers on North Tower landing supplies
Four Ironworkers on North Tower landing supplies. HDR image

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In this image the Ironworkers are working with the crane Operator to lift more materials onto the tower scaffolding. They have to communicate with the Crane Operator using hand signals and radios to safely manage material transfers. I am always amazed at the skill of these crane operators to place everything from a small bundle of steel reinforcing to massive concrete forms on the job with pinpoint accuracy.

HDR Photo of Carpenters Removing the concrete form from the eastern base of the North Tower #2
HDR Photo of Carpenters Removing the concrete form from the eastern base of the North Tower #2

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In this HDR image the concrete form is being removed from the angled surface of the eastern side of the eastern pier of the North Tower. The carpenters have unbolted it and rigged it for the crane Operator to lift it and transfer it to a waiting barge until it is needed again. Seeing the Carpenters alongside these forms gives scale to their size. Once again the Crane Operator and the Carpenters are working through radio and hand signals to safely move this massive piece of concrete form.

HDR Photo of Carpenters Removing the concrete form from the eastern base of the North Tower #1
HDR Photo of Carpenters Removing the concrete form from the eastern base of the North Tower #1

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For this HDR image I chose to shoot the removal of the concrete form in a vertical format to better capture the cranes and the upward momentum that the project exudes as it progresses.

HDR photo of the North Tower Bases and Cranes
HDR photo of the North Tower Bases and Cranes

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This HDR image shows both bases for the North Towers of the Ohio River Bridges Project Downtown Span. The progress that is being made really comes out in this HDR photo. The concrete forms have been removed from the base of the western side of the towers and scaffolding is surrounding the transition point as the base morphs into it final cylindrical shape which will be approximately 150 feet in the air when it is completed.

HDR Photo of The North Tower Base Cooling Manifold Lift
HDR Photo of The North Tower Base Cooling Manifold Being Lifted Into Place

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This HDR image shows a cooling manifold being lifted into place. It is used to distribute cooling water through the concrete as it cures. When concrete cures there is a lot of heat inside it; this is due to the catalytic reaction of the materials that are used to make concrete. Without cooling this reaction would cause the concrete to overheat and lose it’s strength. The cooling process goes on until sensors built into the structure provide the information to show that it is safe to stop cooling the concrete and allow it to finish curing.

I’m really glad to get back to shooting the Ohio River Bridges Project and posting my work again. I hope that small hiccup at the beginning of the year won’t be repeated and I can complete my project of documenting the Ohio River Bridges Project and the men and women who are doing it.

Lowering the Caisson into the Pier Casing

Posted on by Nick Roberts
Lowering the Caisson into the Casing.
Lowering the Caisson into the Casing.

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This HDR image shows the 60 foot long caisson as it is being guided, by the Ironworkers and Carpenters, into place inside the pier casing. After placing the caisson the next step will be to fill the pier with concrete. The steel casing sits on the river bottom and then the caisson fits into a rock socket has been bored 30 feet below the casing into the bedrock of the river bottom. This makes the total length on the pier nearly 60 feet from the surface to the base. The iron cylinder is there to both guide the drill during drilling and to form a protective shell for the pier once the bridge is built.

This image is from a three frame bracket set using -2, 0 and +2 EV settings. I merged the bracket set in NIK HDR Efex Pro 2 and because the workers were moving quite a bit I had to apply 80% anti-ghosting to isolate them and remove the ghosts of their arm movement. After merging and some mild tone-mapping in NIK HDR Efex Pro 2 I returned the merged file to Aperture 3 where I completed my processing by adjusting contrast, alignment, sharpening and the individual color channels to achieve the look I wanted for the final image.