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Construction Updates

Friday, October 17, 2014

Technical Difficulties

Sorry

The Blog Site is having technical difficulties.

We are not able to post photos at this time. 

Photos of the windows will be posted as soon as the website is fixed.

 

Nathan NLEIGH1 01:25:51 PM
Friday, October 17, 2014

497 lbs of Glass

UAS Construction Update for 10/17/2014

497 lbs of Glass

How do you lift a 497 pound piece of glass 50 feet in the air? 

Very Carefully (Banda Bing).  

No, with four suction cups and a fork lift. 

But how can a suction cup lift 500 pounds?  The physics behind the suction cup is a little counter intuitive, but actually very simple.   

 2014 10-17 Suction Cup Physics not 

     Suction Cup Physics (not)

This is how I thought a suction cup worked, before I took engineering classes. You place the suction cup up against the window and then with a small pump suck the air out of the inside of the suction cup.  The more air you suck out of the cup, the greater the negative pressure created inside the cup force holding the cup onto the window.  I thought that the only limitation on the negative force you could create inside the cup was the power of the pump creating the suction force.

 2014 10-17 Suction Cup Physics 

Suction Cup Physics

This is how I understand a suction cup works, after I took engineering classes. You place the suction cup up against the window and then with a small pump suck the air out of the inside of the suction cup.  However, once you suck out all of the air, there is nothing left inside the cup, it’s a vacuum.  It does not matter how powerful the pump is you can’t suck out something that is not there.   Since there is nothing inside the suction cup there is any negative pressure, in fact there is no force at all.  So what is holding the suction cup on the window?  It is the air outside the suction cup that is pushing the cup onto the window. That force is usually one earth atmosphere.

Calculating how much one suction cup can lift is just the force (one atmosphere) times the surface area (area of the suction cup) which can be expressed in the formula  F=PA

L = Load that a suction cup can hold

P = Pressure = Atmospheric pressure in Juneau at 9:00 am today is 995 mb = 0.98 Standard Atmosphere = 29.38 in-Mercury = 14.43 pounds/square inch

A = (Pi)(Radius Squared) = (3.14)(11)(11) = 95 square inches

L = (14.43 pounds/square inch)(95 square inches) =  1,370 pounds!

 

 

    2014 10-17 Suction Cup Window Lifter 

Suction Cup Window Lifter

The Contractor is using a suction cup window lifter by www.powrgrip.com  This window lifter has four suction cups attached to adjustable arms connected to a center pivot bearing.  This allows workers to attach the lifter to the window lying on its side and then lift it and rotate it into position. 

    2014 10-17 Rotating Window 

Rotating Window

 

You may think that with four suction cups we could lift (4)(1370) = 5,480 pounds.  However, the safety rating on this window lifter is only 700 pounds.  Just like most things in life, there are deductions.  Suction Cup Window Lifters are no different. There are deductions for; changes in shape of the suction cup, non-perpendicular lifting forces, strength of suction cup materials, changes in atmospheric pressure and safety of workers and by standards.

 2014 10-17 Lifting 497 pound window 

Lifting a 497 pound window

 

 2014 10-17 Placing 497 pound window 

Placing 497 pound window

  2014 10-17 Another Wonderful View 

Another Wonderful View from the UAS Freshman Housing

 

Nathan NLEIGH1 12:57:34 PM
Wednesday, October 15, 2014

Lights Out Tonight (Oct 15)

Lighting Outage Tonight

There will be no lights in the parking lot and along Auke Lake way tonight October 15, 2014.  The Contractor that has installed the new LED lights on campus has removed the old control cabinet and is installing the new control cabinet.  This is a two day job and there is no practical way to make a temporary power connection. 

New Lighting Control Panel.

 Control Pannel 

 

 

All of the UAS parking lots will be dark tonight in addition to the road and sidewalk coming into campus.  The Noyse Pavilion and the parking lot lights in front of the new Freshman Housing and the new pathway lights between the parking lot and the Soboleff building are all fed from this control panel and will be off tonight.  The courtyard, corridor and chapel by the lake shared parking lot are not affected by this project and will have lights.  Lights will be back on tomorrow night.  We apologize for the involving this will cause everyone here at UAS.  If we are very lucky the clouds will dissipate and we will be able to see the Aurora display that has been very active the past 36 hours.

The UAS Site lighting project will be constructed under two separate phases as shown on the figure below.  Phase II is scheduled for construction during the summer of 2015.

 Lighting Phases 

 

 

 

 

Nathan NLEIGH1 03:43:27 PM
Friday, October 03, 2014

Perception is Reality (Oct 3)

UAS Construction Update for 10/03/2014

Perception is Reality

What we perceive to be real, is frequently not factually correct.  The new UAS LED lights are a good example.  Most new street lights, including the UAS parking lot lights are considered a full cutoff light which directs the light down to the ground and prevents light from escaping up above the light fixture.  Because you cannot see a full cutoff light from the side, your mind perceives that the area is not as light.

Standing in the upper UAS parking lot looking back at the lower parking lot lights you notice that the lights become less visible.  This is one benefit of full cutoff lights.

UAS Parking Lot with Full Cutoff Lights

Parking Lot Lights

 

The International Dark-Sky Association has been working with communities for the past two decades to reduce light pollution.  http://www.darksky.org/ They recommend Full Cutoff lights as one is one tool to reduce light pollution.  Light pollution is a broad term used to describe multiple lighting problems.  I like to think of it as artificial light shining in places you do not want.  Light Pollution to Night sky gazers is light that shines up into the sky creating skyglow making it difficult to see the stars.  Light Pollution to residents is light that shines into your home or bedroom making it difficult to sleep.  Light Pollution to motorists is light from a fellow motorist with xenon headlights or adjacent commercial properties with distracting over bright lighting.  Light Pollution to a camper is the other camper wearing a headlamp who blinds you with 120 lumens while telling you stories of past adventures.

Northern Lights

Northern Lights

 

While full cutoff lights will help UAS Freshmen to see the northern lights better, they can present problems with pedestrian perception.  People walking along a road or pathway at night tend to look up toward the next light they can see, which could be light from a house or a faraway street light. They perceive how dark the pathway they are walking on more by that light in the distance, than the light immediately surrounding them.  For an Engineering example: Take two pathways and using full cutoff lights and a light meter, light both paths to 1.0 foot-candles.  Then take a bright light and place it at the end of one of the long paths.  Because the light at the end of the path is far away and not shining on the path the light meter on the path will still read 1.0 foot-candles.  Now take your normal test subject and have them stand on each of the two pathways and have them tell you which one is brighter.  They will always say the path with the light at the end is much brighter.

This presents a challenge for using full cutoff lights for pedestrian pathways because even though there may be enough light shining directly on the path to safely walk, (0.5 foot-candle) the person looking down the path cannot see the light coming from a full cutoff lights and will perceive that the pathway is dark and unsafe.

New UAS Pathway Lights to Soboleff

Pathway Lights to Soboleff

 

The new pathway lights installed on the pathway down to the Soboleff Building have a mounting bracket below the LED light which deflects enough light that you can see it from the end of the pathway.  With this type of light fixture, we will see a trail of lights stretched before us and our minds will perceive that the pathway is lighter, even though my light meter tells me it is the same J

Nathan NLEIGH1 01:59:12 PM
Friday, September 26, 2014

Asphalt Pavement?

UAS Construction Update for 9/26/2014

Asphalt Pavement?

Pathway to Soboleff Building:  We have been scheduled to pave 3 times now, with no asphalt being placed yet.  September in Southeast Alaska does not have the best weather when trying to place Asphalt Pavement.   Paving is one of the last items on a construction project and unfortunately this typically happens in August and September, a couple very rainy months for Juneau.  The only month that typically has more rain is October.  Anytime the weather permits, the paving contractor has been working all over Juneau.  UAS is nearing the top of their list and they are planning on paving tomorrow, Saturday, September 27.  Let’s all cross or fingers that the weather on Saturday is as good as it is today.

 Pathway to Whitehead Building still waiting for Asphalt Pavement.

Pathway

 

 

UAS Site Lighting:

The Contractor installed several of the new pathway LED lights next to the Egan Library walkway.  Look for more of these pathway lights to go up on the pathway to the Whitehead Building and along the sidewalk of Auke Lake Way.

 

UAS Freshman Housing. 

The Contractor has been replacing window hinges in the UAS Freshman Residential suites and finishing punch-list items.  We appreciate the patience of our UAS Freshmen and apologize for the inconvenience this has caused.  Next week we will see a couple of man-lifts working around the outside of the new UAS Freshman Housing while they complete the metal siding around the windows and corners of the building.  This work is expected to take several weeks.

 

Nathan NLEIGH1 02:13:47 PM
Friday, September 19, 2014

How many LED's (Sep 19)

UAS Construction Update for 9/19/2014

How many LED’s

How many Light Emitting Diodes (LED’s ) does it take to light the UAS parking lot and access road?  I hope that only I have been staying up late at night wondering about this question.  Today we get to know the answer.  One LED from your headlamp is bright enough to illuminate the trail in front of you.  However, it is not bright enough to illuminate a whole street.  Therefore, light manufacturers just keep adding LED’s until they have enough light to illuminate a street, parking lot or building.  The street lights being used on our project have 4 rows of LED’s with xx in each row.  We have 53 street lights on this project.  The number of LED’s is calculated as follows:

                      (4-rows)(10 LED/row)(53-poles) =  2,120 - LED’s

LED Street Light Fixture

LED Street Light Fixture

 

 

 

The contractor working on our UAS site lighting project has now installed all but a couple of the new street lights.  If you come in early or leave late, you have noticed that more and more lights get turned on each day.

New LED Street Light on Auke Lake Way

Street Light

 

 

 

Keep a watch out next week for the Contractor installing smaller pathway light poles along the Auke Lake Way sidewalk and the pathway down to the roundabout.  We will let one of our new UAS freshmen figure out how many LED’s it takes to light the pathway.

Pathway Light Pole Foundation

Pathway Light Foundation

 

 

 

Pathway to Soboleff Building:  The Contractor got notice this morning that the asphalt paving crew will be here today!   The Contractor will need to do some additional work after the paving, but hopefully we will have this pathway back open soon.

UAS Freshman Housing. 

Next week we will see a couple of man-lifts working around the outside of the new UAS Freshman Housing while they complete the metal siding around the windows and corners of the building.  This work is expected to take several weeks.

 

 

 

Nathan NLEIGH1 11:20:06 AM
Friday, September 12, 2014

Hot Rocks - (September 12)

UAS Construction Update for 9/12/2014

Hot Rocks

My grandmother told me stories that her mother would heat up a large rock on the wood stove at night.  When the rock was nice and warm, she would wrap it up in a towel and put in the bottom of her bed to keep her warm during a cold winter night. 

When I moved to Alaska 20+ years ago and had to pay my own heating bills, I turned down the thermostat to the cool to cold side and bought a couple more blankets.  Then one year a friend gave us some modern hot rocks.  These hot rocks are a cloth bag filled with some type of grain like wheat corn or rice.  Now we just pop a hot rock bag into the microwave, heat them up and put them in the bottom of our bed to keep warm at night.  Some hot rocks purchased at the store have included spices and fragrances and are intended as a heat or cold pack.  The one down side of these hot rocks is that they get cold in the middle of the night and you kick them out onto the floor.  That may be why grandmother never got more than 6 hours of sleep at night.

Grandmas Hot Rock

 

Grandmas Hot Rock2

Grandmas Hot Rock2

 

 

 

My Hot Rocks

My Hot Rocks

 

 

Each UAS Freshman Housing suite has what you could consider a mega-hot rock.  Heating is provided by hydronic heating in the floor.  (See Update on November 1, 2013)  This system runs hot water through tubes the 4 inch thick concrete floor resulting in a mega-hot rock that weights

(4-inches)(250 Square Feet)(1-foot/12-inches)(150lb/cubic feet) = 12,500 pounds.

This “mega-hot rock” weights 6 tons and will not get cold at night, even if you turn the thermostat all the way down and stop the hot water from flowing through the tubes in the concrete.  This mega-hot rock holds so much heat that it takes many, many hours for it to cool down or heat up.  Therefore, instead of living in a house that jumped between 56 – 70 everyday like I did, Residents with hydronic floor heating are encouraged to pick a temperature they like and stay at that temperature all the time.

Concrete Pour Last November to Create one Mega Hot Rock

Making Hot Rock

 

 

 

Pathway to Soboleff Building:  The Contractor is almost complete with their earth work, set foundations for the handrail and will be installing handrail posts in the next day or so.  They will be ready for asphalt pavement sometime next week, and then we just need to have a non-rainy day to get the paving done.

Posts Lined up for New Handrail

Posts for Handrail

 

 

Campus Exterior Parking Lot Lighting. 

Did you notice that we will lost 35 minutes of daylight last week?   Also did you notice that the Contractor got up two rows of LED parking lot lights?    The plan for next week is much the same,  lose 36 minutes of daylight and install the remaining two rows of parking lot lights.  Keep a watch out for new pathway lights showing up on Auke Lake Way.

Light Pole Foundation Proudly Supporting a New LED Light Pole

New LED Light

 

 

Nathan NLEIGH1 12:05:57 PM
Friday, September 05, 2014

UAS Construction Update (Sep 5)

Pathway to Soboleff Building:  The Contractor has removed the existing pavement and has started placing new subgrade along this pathway.  This walkway will be closed for about 2-weeks while the contractor is working in this area.  When the project is completed it will include a wider asphalt path with a handrail on the right hand side.    Once the groundwork is prepared for this walkway, we will need to wait for a non-rainy day to pave this pathway.  We all hope there are a few of these days left before snow flies.

Pathway Under Construction

Path Construction

 

 

 

Campus Exterior Parking Lot Lighting. 

By the same time next week, we will have lost 35 minutes of daylight!  Besides being simply amazing to us Engineers and Astronomers that daylight can change so fast, it makes it difficult for Faculty, Staff and Students who arrive before 6 AM or leave after 7:30 PM with the parking lot lights out.  Therefore, we are having the Contractor install some temporary lighting by Monday.   This will help tide UAS over until the new LED lighting is installed and turned on.  These lights will be installed and turned on in sections, starting with the ones closest to the Egan entrance.  The Contractor will have all the LED lights turned on in 3-4 weeks.  By that time we will have lost 2 hours and 20 minutes.  How does that happen?

Light Pole Foundation Waiting for LED Light Pole

Pole Foundation

 

 

Nathan NLEIGH1 04:25:31 PM
Friday, September 05, 2014

Transformation from Building to Home (Sep 5)

UAS FH Construction Update for 9/05/2014

Transformation from Building to a Home (September 5)

UAS Freshman over the past 10 days have been transforming the new UAS Freshman Residence hall from a wonderful building into a comfortable and exciting home.  This will be their home for the next x months and I have been impressed with how quickly the project went from a construction zone into a living zone.  Orange vests and hard hats have been replaced with clean trendy outfits and stylish hair.  The Noise of Chop saws and screw guns have been replaced with energetic talking and laughter.  Blank cork boards have been livened up with invitations to campus activities of live concerts and painting the northern lights.  Freshly painted walls are now decorated with photos of family, posters of Seahawks and the latest music groups.

Lively Bulletin Board

Bulliten Board

 

 

Inspiring Entrance Murals

Life

 

 

The Contractor continues to work on some final punch list items in the commons area and mechanical rooms.  Next week the Contractor will be installing the large glass wall that separates the fifth floor seminar/class room and the commons area on the 4th floor.  These panes of glass are ten feet tall and are fully tempered.  They will also be installing the final glass windows in the front of the building.   UAS and the Contractor are working diligently to minimize the disruptions and inconveniences to our UAS Freshmen while these remaining items get completed.

Contractor Exterior Grading

Exterior Grading

UAS Freshmen started entering the new Residence Hall on August 27th.  Many of the local news communities produced excellent stories on the project.  Here are some links to those stories:

 

Facebook – UAS Facebook page:

https://www.facebook.com/media/set/?set=a.741192842621052.1073741836.622459371161067&type=1

KTOO and reporter Lisa Phu:  http://www.ktoo.org/2014/09/03/new-uas-dorm-provides-housing-100-freshmen/

Juneau Empire and reporter Katie Moritz

http://juneauempire.com/local/2014-08-28/move-day-comes-new-uas-dorm#.VADOSKPOugV

UAS website also links/posts all of the news articles about UAS at: http://www.uas.alaska.edu

 

Nathan NLEIGH1 12:08:36 PM
Friday, August 29, 2014

Making it Better for the Next Generation (August 29)

UAS FH Construction Update for 8/29/2014

Making it Better for the Next Generation (August 29)

The UAS Freshman Residential Housing came to life this week with over 100 new UAS Freshmen.  The smiles, excitement and enthusiasm of our new UAS freshmen have been a wonderful thing to witness as they checked into their new suites and start another chapter in their life.   The most frequent comment from parents was “What a beautiful building, I never lived in student housing that was this nice”.

                                                  New UAS Freshman Residential Housing

Opening Day

 

Parents of our UAS freshmen, including myself, went to school in a student dorm made from solid concrete, painted with lead based paint with cold steel doors.  They looked a lot more like army barracks than college & university student housing.   Most people work their whole life Making it Better for the Next Generation.   Weather it is a Parent, Teacher, Artist, Biologist, Nurse or Law Enforcement Officer; we are working to make it better for the Next Generation.

The UAS Freshman Residential Housing project has been in the works for more than a decade and hundreds of people have contributed to its completion and operation.  I have only been involved in this project for over one year and it has been my honor to do my small part as UAS construction representative.  I would like to thank those who have made this project a reality including:

UAS Administration

Local Elected Officials – Funding

UAS Staff

UAS Faculty

Design Team:

MRV Architects

Murray & Associates – Mechanical

Haight & Associates – Electrical

R&M – Civil

PDC – Structural

Greenbush Group – Acoustical

Construction:

ASRC McGraw Constructors – General

Schmolck Mechanical – Plumbing

Schmolck – Ventilation Duct Work

Harri Plumbing & Heating – Sprinkler System

Chatham Electric – Electrical

Siemens – Building Controls

UAS IT Staff – Connection to the world

Doaks Lock and Key

Admiralty Construction Inc. – Civil Site Work

Hardrock Construction – Siding

Rainbow Builders – Carpet and Linoleum

Alaska Acoustical - Acoustical Ceiling Tiles

American Painting – Paint

Coble’s Painting – Paint

All Wall Construction – Paint

ASRC McGraw Hoonah All Stars – Sheet Rock

Northern Lights Development – Concrete Sidewalks

Otis – Elevator

CBC Construction – Roofing

Simplex-Grinnell – Fire Alarm & Security

All Wire Electric – Controls

F&F – Sheet Rock, also tape mud and paint

Secon – Paving

Gibson Door – Door and Hardware Installation

Perseverance Glass- Glass and Curtain wall installation

All of the men and women in these companies have worked long and hard hours  Making it Better for the Next Generation of UAS Freshmen.  

Thank you all again!

 

 

 

 

Smiling Faces2

Smiling Faces3

Check out the smiling UAS freshman faces the UAS Facebook page:

https://www.facebook.com/media/set/?set=a.741192842621052.1073741836.622459371161067&type=1

 

Check out the nice article and photos from the Thursdays Juneau Empire have on the project.

http://juneauempire.com/local/2014-08-28/move-day-comes-new-uas-dorm#.VADOSKPOugV

 

Next week KTOO will highlight a cover story on our UAS Freshman Residential Housing project.

Look for it on the cover website of:   http://www.ktoo.org/

Nathan NLEIGH1 12:24:16 PM

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