CHAPTER FOUR: Maintenance (continued) Part III: Tram Maintenance The Unique Arch Transportation System The tram system for the interior of the Gateway Arch was designed by Richard B. Bowser. In a 1986 letter to former director of the NPS George B. Hartzog, Jr., Bowser outlined the sequence of events which led up to his selection as tram system designer:
Dick Bowser entered the Montgomery Elevator Company offices in Moline, Illinois, one day in 1960 to visit a friend, John Martin. The company had recently been called by Eero Saarinen's office, looking for a firm to take on a "transporter" project for the Gateway Arch. "[A]s soon as he saw me in his office, [Martin] had his secretary make a return call to Saarinen's office. While this was going on he was explaining what he was doing. He then took the telephone and was introducing me to one of the partners. By the time he handed the telephone to me there were two of Saarinen's partners on the line.
A month after this initial contact, Saarinen called back and requested a presentation from Bowser within two weeks. "The first drawing that I got had an outline of the Arch, and down at the bottom was a square that showed a walkway and it said 'elevator' that's all there was." Bowser worked day and night at home in his basement for the next two weeks to complete his plans. [173] Bowser described his thought process in a 1964 interview:
After two weeks, Dick Bowser traveled to Michigan for a 45-minute presentation. "I didn't know the meeting was going to be anything more than a preliminary meeting with the architect and his staff," recalled Bowser, who walked into a room filled with St. Louis area congressmen, the mayors of St. Louis and East St. Louis, MacDonald Construction Company engineers, Director of the Park Service George Hartzog, and Eero Saarinen himself. At 3 p.m., Bowser began to pitch his idea for the transporter system, the concept of which was the same system which was eventually built in the Arch. His presentation lasted 40 minutes; then the questions came, in a session which lasted several hours. "[A]fter the group had been advised that the restaurant could not delay dinner any longer someone asked 'Mr. Bowser, what are you.' I was sure he was addressing my academic credentials. In an effort not to ruin what I felt was a successful presentation I answered 'I'm 38 years old.' This 'brought the house down' and ended the meeting." [175] Within a few weeks Bowser had a contract, for a fee of $40,000, for a two year job; as it turned out, the job lasted until 1967. In his letter to George Hartzog, Bowser detailed some of the considerations included in designing the trams:
Sixteen special passenger capsules were built, which operated in two eight-car trains, one in each leg. The cars were designed by Planet Corporation of Lansing, Michigan, and built by General Steel Industries, Inc., St. Louis Car Division, from Reynolds aluminum supplied by Joseph T. Ryerson & Son. Each capsule carried five passengers seated in fiberglass seats, the only components of the cars and carrier frames not made of aluminum. [178]
Repairs and Maintenance A unique transportation system such as the tram in the Gateway Arch, despite its efficiency and durability, was bound to present unusual problems over the course of time. Employees were kept on staff (including Dick Bowser between 1967 and 1972, and his successor as unit supervisor, Harry Breitenstein) to maintain and repair the Arch tram system. These employees were people with some of the most specialized talents in the National Park Service (NPS), with a history of innovative solutions to their credit, and an almost daily series of one-of-a-kind problems facing them. A $15,000 per year fund from the transportation operation profits was set aside by Bi-State for major repair and replacement of tram components in 1970. In addition, $5,000 was set aside for emergency maintenance other than spare parts. [180] Originally, NPS tram maintenance personnel worked only Monday through Friday shifts, and their duties were assumed by standby mechanics from General Elevator Engineering Company. On February 10, 1971, at the insistence of Dick Bowser, JEFF requested that the park hire two elevator mechanics on a full-time, year-round basis to replace the part-time standby mechanics. The mechanics were paid out of funds generated by Bi-State from the tram operation by bill for collection on a quarterly basis. The additional mechanics enabled the tram operation to start running earlier each day, thus providing better visitor service and more revenues for Bi-State. [181] This agreement proved beneficial to both JEFF and Bi-State, and was continued, with modifications, into the 1990s. A 1992 article in the St. Louis Post-Dispatch profiled one of the Arch Transportation Services (ATS) employees, Chuck Kalert, indicating some of their routine duties:
Negotiations were begun in 1985 to study the entire tram system, with the objective of modifying the electrical and mechanical systems, and changing to state-of-the-art technology where cost-effective. These negotiations had to be abandoned in 1986 due to fiscal constraints. Problems with the tram system were constant during the late 1980s, with above-normal failure on the capsule reversing starters beginning in 1986. These starters were rebuilt the following year; some of them had been in service for 18 years. In addition, the south tram was recabled during January. The north tram was recabled in 1987, but Bethlehem Steel provided cables which were cut too short and not to park specifications. This delayed the completion of the project, but was only a minor inconvenience to the visitors. New control wires were also installed on the outside of the north tram, along with eight new starters. [183] The south tram was again recabled during January 1988, and several first-time projects were also completed that autumn, including replacement of the original inter-capsule wiring, which was 21 years old. After analyzing the failure pattern on the system, a new program was instituted for changing the counterweight wheels, with any wheel bearing that was over seven years old automatically slated for replacement. This program eliminated shutdowns due to wheel or bearing failure. All the original micro switches on the south tram capsule doors were changed during 1988, as well as drive belts on the door operators for the lower and upper hatch doors. [184]
From September 15 through December 20, 1991, several of the 25-year-old components of the north tram were replaced. These included all magnetic hoist-way switches, the capsule cradle wheels, trunion cables, capsule leveling motor output shaft bearings, sprockets and drive chains. All moveable and stationary contacts on the number two section control panel were replaced. [185] Electrical Systems In addition to work on the trams, ATS employees performed extensive work on electrical and wiring systems in the park. The ATS crew is primarily responsible for repair to light fixtures at JEFF. In 1989, a program to upgrade several components of the vast Arch electrical system was begun. Replacement fixtures could not be located for the lighting units on the Grand Staircase, and so the ATS crew designed and fabricated a replacement fixture and installed approximately 40% of the units. A program to upgrade the exterior pole fixtures along the Arch walkways began, including the re-welding of all poles to their bases and a modification of the receptacle part of each fixture. An inventory/tracking system was developed for all of the electrical distribution panels in the Arch complex, allowing for the documentation of any future additions or deletions to the electrical system. [186] The 1990 purchase of a Diahatsu utility vehicle with a hydraulic work platform made repairing grounds lighting safer and more efficient. A major effort was made toward correcting design deficiencies in the north parking garage exterior lighting system, specifically on the top deck. Additionally, an electrical lighting supplies inventory was established. [187] A 400-amp electrical panel, which supplied power to the south grounds lighting system, was replaced due to damage caused by water intrusion during the Arch complex roof repairs. The first panel to be replaced required many hours of research and four investigative sessions with General Electric and its vendor. The panel size had been changed due to an alteration in the National Electrical Code. Field changes were made by the ATS crew to adapt the new panel to the existing conduit and wiring. Soon after this, as the result of another intrusion of water and sand, the new breakers had to be replaced. The offending sand was so fine that it entered the breakers' internal mechanisms and rendered them inoperative. [188] A main electrical junction box along the north side of the underground museum, which had been leaking for several years, was replaced during October 1991. Every time it rained, water infiltrated the north mechanical room around the main 440 volt switch gear. During April 1991, the main feeders from #2 emergency generator, for the Arch's main line emergency circuit, were changed to correct an electrical code violation. [189] Thirty grounds light poles were refurbished and re-welded in 1991. The repairs were necessary due to vandalism and the constant vibration of the wind, which caused the welds to fatigue and break. These repairs represented a substantial savings over the cost of replacement poles. [190] Unique Systems and Repairs Work was begun in 1985 to install central vacuum systems in each leg of the Arch, to facilitate the annual cleaning of the interior portion of the Arch legs, as well as daily cleaning of load zones and capsules. Piping was installed by 1986, and specifications for the purchase of power units were made. The central vacuum systems were completed in 1987. [191]
An overhead I-beam system was installed in the lower load zone during 1989, which allowed for the removal of heavy pumps from the bottom of the pump station. Weighing more than 500 pounds each, these pumps could only be removed through the effort of four men physically carrying them out. The pumps had to be raised 45 feet vertically, and moved up 29 steps. The new I-beam system allowed the pumps to be moved mechanically, and was a good safety project. [192] Water intrusion, as a result of the water mitigation project on the MWE roof, "shattered nerves in the ATS shop," and consumed many hours of labor in cleaning up mud and water. "Several call outs in the middle of the night brought employees in to find water running from the ceiling and from electrical panels and light fixtures, a very unsettling experience." Spring rains during the waterproofing of the visitor center roof consumed many hours of labor in cleaning up mud and water in the ATS shop. After several change orders and negotiations with the contractor, this was finally corrected with the installation of new ventilation system piping to the exterior of the building. [193]
Specialized Staffing Problems The ATS unit was affected by staffing shortages because of injuries in 1987 and 1988. Due to the technical nature of the work involved, it was impossible to find temporary help to alleviate the problem. [194] Staff-days lost totaled 192. Three new mechanics were hired for the ATS crew, which created unique problems, since this was the first time so many men had to be trained on the job at the same time. Schedule changes were required in order to cover all phases of the job, as few employees were experienced enough to perform all the needed tasks. [195] During 1990, four positions that were vacated on the ATS crew were filled by individuals who were members of the military reserves. Park operating standards required at least two members of the ATS crew be present at all times when the trams were operating, so this created scheduling problems due to the mandatory drill weekends for the reservists. As a result of the unusually large turnover of personnel, more scheduling and training was necessary, and less annual maintenance was accomplished. [196] The services of ATS Mechanic John Rousan were lost from February through November, 1991, due to his activation for military duty in Saudi Arabia. During the first quarter of 1991, three new mechanics were hired to fill vacancies on the ATS crew. An additional, temporary mechanic was hired as a replacement for John Rousan during his call to active duty. [197] Motor Generator Set Replacement The motor generator (MG) sets are the devices which produce direct current (DC) power to operate the Arch tram system. Industrial electrical systems requiring close, precise motion and speed control have historically operated on DC power, rather than commercially available AC power. Each of the two trams has an MG set, located beneath the floor of the observation deck at the top of the Arch. The original MG sets, installed in 1967, continued in use until 1992. [198] Major repairs were made to the fuel distribution system on the #1 emergency generator, and all fuel hoses were replaced in 1988. [199] The south motor generator (MG) shorted out during the summer season of 1989. Emergency repairs were made, with the tram being down during the heavy visitor use season for four days. This breakdown indicated that the MG sets were approaching the end of their life cycle and were in need of replacement. [200] The park negotiated for more than two years to replace the 25-year-old MG sets with a kinetic rectifier drive system. A bid was received in May 1991 to accomplish this, but was beyond the reach of available funding. To this end, 1991 was another year of many meetings and field trips to the interior of the Arch legs to investigate the work sites. Superintendent Schober commented:
The ATS maintenance staff was assisted by General Electric investigators with coal mine MG set experience. Work continued into 1992 to obtain replacement MG sets, to be produced by G.E. for installation in March. The old sets were cut in two in order to remove them from the top of the Arch, and transport them to ground level. The MG sets, both the 1967 and 1992 models, are unique, and were specially designed for the Arch. They were installed in an inverted position due to the small size and unusual shape of their housing area at the top of the Arch. [202]
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