Sunday, September 22, 2013
Day of Caring 2013
Sunday, August 25, 2013
Copper for a coach roof
Individual copper sheets were attached
with a folded seam and soldered.
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Completed lower hood. One improve-
ment over 1912 materials is the use of
marine calking to seal edges.
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Bob M. attached the last of the clere-
story cladding to allow the final piece
of copper to be attached.
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Completed copper hoods debuted dur-
ing Railroad Days 2013.
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Thursday, August 8, 2013
Smoke or heat?
A critical responsibility of every museum is the general protection of the Collection. Broadly defined, that could mean protecting it from everything, which is unrealistic. However, prudent steps can be taken to protect the collection from things that could reasonably occur. Examples may include exposure to bright sunlight, rapid changes in heat or humidity, small to moderate earthquakes, and fire.
Inside the Northwest Railway Museum's new Train Shed exhibit building, some of the most important and representative objects in the Collection are protected with UV-filtering windows, R-30 insulation, a structure designed to the most modern seismic code, and a fire detection and suppression system. Yet no system is perfect and unfortunately the Museum has had a variety of issues with the fire detection system.
Local codes required smoke detectors in the original construction because, as Spike has been advised, they often detect a fire sooner than a heat sensor. However, in a building with fans running all the time and nearly 750,000 cubic feet of air, there have been problems with these sensors. Since completion in 2010, the Train Shed has experienced as many as 50 false alarms. Fortunately, the Snoqualmie Fire Department has been very understanding and supportive, and several fire fighters now know almost as much about the Collection as some of the regular docents. However a problem like this cannot be allowed to continue. Aside from the story about The Boy Who Cried Wolf, what if the fire department is responding to a false alarm when your house is on fire?
The Museum and its contractor partners have worked hard to determine the cause of the false alarms from the smoke detectors. The Train Shed is not particularly dusty - in fact a lot cleaner than the Conservation and Restoration Center, which also has a number of smoke detectors. There are no sudden changes in temperature that could cause condensation to form inside the detectors. The model of sensor does not have a history of issues. There has even been consideration as to whether an infestation of insects or spiders is causing the problem. However, without being able to pinpoint an exact cause, it has been determined that smoke detectors are not reliable inside the Train Shed, and the local municipality approved a change.
Early in August 2013, E Squared Systems was on site to replace the smoke detectors with heat sensors. This is quite a feat in a structure filled with artifacts, with ceilings as high as 35 feet, and not a lot of floor space to operate a 14,000-pound lift. Now the Museum looks forward to improved reliability, and the Snoqualmie Fire Department looks forward to fewer late night museum visits.
An articulated lift allows a fire alarm
technician to exchange fire detection
sensors inside the Train Shed, high above
chapel car Messenger of Peace.
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Local codes required smoke detectors in the original construction because, as Spike has been advised, they often detect a fire sooner than a heat sensor. However, in a building with fans running all the time and nearly 750,000 cubic feet of air, there have been problems with these sensors. Since completion in 2010, the Train Shed has experienced as many as 50 false alarms. Fortunately, the Snoqualmie Fire Department has been very understanding and supportive, and several fire fighters now know almost as much about the Collection as some of the regular docents. However a problem like this cannot be allowed to continue. Aside from the story about The Boy Who Cried Wolf, what if the fire department is responding to a false alarm when your house is on fire?
The Museum and its contractor partners have worked hard to determine the cause of the false alarms from the smoke detectors. The Train Shed is not particularly dusty - in fact a lot cleaner than the Conservation and Restoration Center, which also has a number of smoke detectors. There are no sudden changes in temperature that could cause condensation to form inside the detectors. The model of sensor does not have a history of issues. There has even been consideration as to whether an infestation of insects or spiders is causing the problem. However, without being able to pinpoint an exact cause, it has been determined that smoke detectors are not reliable inside the Train Shed, and the local municipality approved a change.
Early in August 2013, E Squared Systems was on site to replace the smoke detectors with heat sensors. This is quite a feat in a structure filled with artifacts, with ceilings as high as 35 feet, and not a lot of floor space to operate a 14,000-pound lift. Now the Museum looks forward to improved reliability, and the Snoqualmie Fire Department looks forward to fewer late night museum visits.
Monday, July 29, 2013
Keeping track safe and reliable
The grade immediate below the track
structure is called the subgrade. It was
disturbed by an excavator during a
recent construction project conducted
adjacent to the track.
|
A rock slope was constructed to stabil-
ize and strengthen the subgrade for
more than 200 linear feet. Geotextile
fabric was placed below the rocks to
improve performance of saturated soils.
|
A new rock slope below
the track at Snoqualmie
Falls.
|
The design uses "heavy loose rock," which are large rocks 30 inches and more across. It relies in part on prior stabilization work performed when soil anchors were driven under the track and a retaining wall was installed at the toe of the slope. To address the current issue, the slope on the subgrade below the track was covered with geotextile fabric and the heavy loose rocks were keyed into the sloped using an excavator. This design places several hundred tons of rock on the subgrade slope and restores integrity to the 1:1 zone beneath the track. However work did not stop there. Areas affected by construction activities that were outside the 1:1 zone but within the 2:1 slope of the railway grade are being strengthened with a foot or more of quarry spalls three to six inches in diameter.
Work took three days to perform and was completed between scheduled trains. What is most impressive to Spike is that the total elapsed time between discovering the issue and implementing final rehabilitation was just four days! Trains are continuing to operate and will resume track speed when authorities determine that stability has been fully restored. So a stable subgrade once again supports good track.
Labels:
interpretive railway,
Snoqualmie Falls,
track
Sunday, July 14, 2013
A day of firsts
Coach 218 pauses outside the Train Shed prior to being switched onto the train.
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218 prepares to depart for Snoqualmie
Falls with 30 passengers, its first
revenue run since the late 1940s.
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After years of effort, 218's carbody rehabilitation was substantially completed earlier this month. Considerable effort remains to complete the interior appointments and lower window sashes, but with a visit from railroad royalty (Thomas the Tank Engine) it was difficult to resist the opportunity to "try out" the 218! And after Thomas departs for his next museum venue, coach 218 will return to the Conservation and Restoration Center where work will resume on the interior.
Friday, July 5, 2013
Thomas the Tank Engine arrives!
Monday, June 24, 2013
Winning the lottery?
A film crew sets up the interior shot of
"Jim" operating his locomotive.
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The commercial filmed at the Museum features "Jim," a character who wins the lottery and upgrades his HO scale locomotive to a full size model. Of course the real locomotive happens to be the Museum's locomotive 201, a model RSD-4 built by the American Locomotive Company in 1951 for Kennecott Copper. This 1,600 HP locomotive is similar to the once ubiquitous ALCO road switchers that operated on more than a dozen railroads in the Northwest. The bright orange behemoth was pulled by one of the Museum's Baldwin RS4TC locomotives, which was "removed" from the film in post production. An actor sat in the engineer's seat pretending to operate it. A home and garage were also added in during the post production process.
Locomotive 4012 pushed and pulled
the 201 but was rendered invisible
during post production.
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Thanks go out to the many Museum volunteers that met or exceeded the client's expectations and made it all come together for a clever and amusing ad.
The commercial is now running on local television; watch for it!
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