GEOGRAPHICAL DATA DEFINING A RECTANGLE LOCATING THE PROPERTY OF LESS THAN TEN ACRES APPROXIMATE ACREAGE OF NOMINATED PROPERTY: FORM PREPARED BY NAME AND TITLE: Amos J. Loveday, Jr. July, 1972 5479-B Rockwood Court 2. STATE LIAISON OFFICER CERTIFICATION As the designated State Liaison Officer for the Na- tional Historic Preservation Act of 1966 (Public Law I hereby certify that this property is included in the 89-665), I hereby nominate this property for inclusion Nationa 1 Register in the National Register and certify that it has been evaluated according to the c-iteria and procedures set forth by the National Park Service.
The recommended level of significance of this nomination is: 14 2o0 1972 GP0 931.894 039 DATE LONGITUDE LATITUDE ORGANIZATION STATE Columbus CODE Title CORNER NATIONAL Degrees Minutes Seconds Ohio COUNTY MAJOR BIBLIOGRAPHICAL REFERENCES NATIONAL REGISTER VERIFICATION STREET AND NUMBER: LATITUDE AND LONGITUDE COORDINATES ATTEST:D Name CITY OR TOWN: DEFINING THE CENTER POINT OF A PROPERTY ILIST ALL STATES AND COUNTIES FOR PROPERTIES OVERLAPPING STATE OR COUNTY BOUNDARIES Keeper of The National Regis Director, Office of Archeology and Historic Preservation Local Goodyear Aerospace Corporation. "Goodyear Aerospace Airdock." National Register write-up : APR 1 1 197- Acknowledge ARCHEOLOGIST Maps ARCHITECT Register no.
Re-submit KEEPER Photos 73002259 Send-back PROPERTY EDITORIAL REVIEW TECH REVIEW 3-19-73 BRANCH CHIEF Summit Forking number STATE Federal Register entry HISTORIAN AKRON, DHIO A6110044 NPS Number PROPERTY OF THE NATIONAL REGISTER GOODYEAR AEROSPACE CORPORATION PROPERTY OF THE NATIONAL REGISTER AKRON,OHIO A 56062195 PHOTOGRAPHIC Title: PROPERTY OF THE NATIONAL REGISTER NPS LiEW Of AiRDOCk DOARS AKRON, OHIO Summit, Obio NPS Number Loc. Form No. 10-301 UNITED STATES DEPARTMENT OF THE INTERIOR Rev. 7-72 NATIONAL PARK SERVICE FOR NPS USE ONLY NOV 20 1972 STREET AND NUM BER: CITY OR TOWN: 7.5' Quadrangle TO BE INCLUDED ON ALL MAPS 1. Property broundaries where required. 2. North arrow. 3. Latitude and longitude reference.
039 153 Akron Summit DATE 1967 REQUIREMENTS NAME COUNTY STATE REGISTER NATIONAL COMMON: CODE ENTRY NUMBER SOURCE: SCALE: MAP REFERENCE Goodyear Airdock South side of the Akron Airport NATIONAL REGISTER OF HISTORIC PLACES PROPERTY MAP FORM AND/OR HISTORIC: U.S.G.S. (Type all entries-attach to or enclose with map) Akron East, Ohio LOCATION 1:24,000 Ohio DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY AKRON EAST, OHIO 41° 01' 54 81° 28° NOV 20 1972 1967 AKRON EAST QUADRANGLE West Long. Akron vicinity Ponn Humpback Covered Bridge Mx. Daniel R. Porter Bon, Chalmers P. Wylle Hon, John F. Seiberling, Jz. NRowland: pcl 4/13/73 Location STATE Name Springfield PHR Pennsylvania House Vinton County Franklin County Director Ashtabula County Director, Northeast Region Columbus Also Notified Clark County ENTRIES IN THE NATIONAL REGISTER Hon. William B. Saxbe Wilkesville vicinity Camp Chase Site Hen.
Robert Taft, Jr. Hon. Clarence E. Miller Hon. Clarence J. Brown, Jr. APR 1 1 1912 Office Columbus, Ohio 43211 Date Entered Goodyear Airdock Wisvell Road Covered Bridge Sumnie County The Ohio Historical Society Hon. J. William Stanton Goodyear Aerospace Corporation Akron, Ohio June 15, 1986 Welcomes SOCIETY FOR INDUSTRIAL ARCHEOLOGY Goodyear Airdock as it Sticking their noses out To millions of persons the world over, the Air- of the Goodyear Airdock's Ohio a ZS-2G1 airship (left) and Built in 1929 to construct the giant rigid air- ZPG-3W tower over tiny ships, the Akron and Macon, the Airdock also men, cars and trucks in the summer of 1958. many other aerospace products Over the years it has lent itself to a variety of search, development and testing - all less space - the size of several glamorous than airships, but valuable.
football fields- that would be ideal for the It is 1,175 feet long, 325 feet wide and 211 feet high. Its 364,000 square feet of floor space lifter and other modern - without interior support posts - is the largest uninterrupted area ever built under one Crowd of 30,000 Its height is equal to a 22-story building assembled in one end of Several football games could be played simul- the yet-to-be completed taneously under its roof. It is so big, in fact, that 1929, to witness the master ring laying the start of construction workmen or danger of carbon monoxide poisoning move on 40 wheels set on curved standard Elevators were built along both walls to carry workmen up and down to various catwalks. Identical spherical doors at each end of the When World War Il broke out and enclosed building probably provide the Airdock's most production areas were needed in a hurry, the Airdock was ready.
And the work that went on in it contributed significantly to the war effort. quarter of an orange peel. Each of the two- The Department of the Interior now lists the piece sections weighs 600 tons and is fastened at the top by a hollow-forged steel pin 17 inches in diameter and six feet long. The doors roof. airships. ceremony symbolizing uninterrupted floor unusual feature. construction of the heavy Historic Places. Goodyear Airdock in the National Register of Airdock in November, Best facility for building giant airships stands today provides huge orange-peel doors, each weighing 600 tons, has been used to build nonrigid airships and The doors are two-piece and shaped like one- dock means airships, Goodyear and Akron, railroad track and take approximately five inside the structure without discomfort to on the USS Akron.
the engines on the airships could be"run up" minutes to open or close. uses - production, office, service, storage, re- About Goodyear Aerospace -- Goodyear Aerospace Corporation, a wholly-owned and brakes, and International Aviation Operations, also subsidiary of The Goodyear Tire & Rubber Company, is a major prime and subcontractor in the aerospace and military, commercial airline and general aviation markets. Air Treads, the world's leading aircraft tire retreader, As the high technology arm of the world's largest was acquired in 1984 after doing all of Goodyear's rubber company, it is engaged in a wide range of domestic aircraft tire retreading separately for 20 years. activities and products for the commercial, airline, The acquisition helped solidify the company's worldwide leadership in aircraft tires and aircraft tire retreading. Led by Robert W.
Clark, president The Arizona Division produces radar systems and and chief executive officer, it em- ploys about 5,000 persons in Akron, equipment, intelligence data processing and handling Litchfield Park near Phoenix and systems, and transparent plastics. 900 at its Engineered Fabrics Divi- sion, Rockmart, Ga. Another 500 are tanks and deicing systems for military and commercial employed by its Air Treads Inc. sub- aircraft, munitions decelerators and oil spill containment sidiary headquartered in Atlanta, Ga. Robert W. Clark About one third of GAC employees are engaged in scientific, engineering and technical when the Goodyear-Zeppelin Corporation was organ- ized.
In 1929 it built the huge Airdock which for many The Defense Systems Division in Akron is the firm's years was the only building in what is now GAC's large largest operating unit, doing research, development and production on undersea warfare systems; simulators and trainers; high speed computers and processors; tactical ordnance, recovery and retardation systems; With an employment of more than 30,000 during electronic countermeasures; guidance and navigation World War II, Goodyear Aerospace produced major systems; sensor simulation; electronic warfare systems; assemblies for almost every type of airplane and com- command and control systems; image processing and pletely built 4,006 FG-1 Navy Corsair fighters. radar absorption materials. The Aircraft Wheel & Brake Division in Akron is the name of Goodyear. world's leading designer and producer of aircraft wheels GOOD YEAR barriers.
work. defense industry. Airport. manufacturing complex bordering Akron's Municipal Engineered Fabrics Division produces aircraft fuel defense and space industries. 2,000 at its Arizona Division at That is a part of the grand heritage behind the good in Akron, is the world's leading supplier of aircraft tires to reconnaissance equipment, data links, geodetic Forerunners of Goodyear Aerospace date to 1923 Verite -- As a leader in the aerospace industry, Goodyear Aerospace One such committee in1984 sought to beautify our inner courtyard with an employee-designed sculpture. A compe- tition was held with several excellent entries. It is a total, across the board Commitment To Perfection that The winner was Verite by Dick Larsen, an aircraft brake involves all employees. Only by total involvement do you get carbon engineer. His design was finalized and built in time for total commitment.
And that holds promise of reducing our Family Day, attended by 25,000 persons in the Fall of 1984. costs by more than 25 percent, an attractive goal in these Since then, Verite (French for truthfulness) has continued to budget-reduction times. grace our courtyard as an attractive symbol of organizational We have more than 100 special employee-formed teams development and our corporate, total Commitment To throughout our plants working toward quality enhancement. GOODYEAR AEROSPACE CORPORATION, 1210 Massillon Road, Akron, Ohio 44315 Perfection. has adopted a philosophy of quality and"do it right the first time." Completed Goodyear-Zeppelin airship factory and dock built in 1929 at Akron, Ohio, and showing U. S. S. Akron, built in that dock, emerging preparatory to flight.
Building the World's Largest Zeppelin Corporation at Akron, Ohio A Complete Description of this Giant Structure of the Goodyear- Airship Factory and Dock By WILBUR J. WATSON* feet, a span of 230 feet and a clear model was about 1/240th of the size of The former has a length of 803 feet, a span of 264 feet and a height of 172 has a length of 810 feet, a span of 150 feet and a height of 150 feet. doors that open horizontally, from the diameter of 133 feet and a gas capacity building, is deflected upward and often creates a partial vacuum over the upper with the normal wind currents, in or- As a matter of fact, this suc- reaches its maximum intensity, on the HIS building is approximately a be several times as great as the directly it form parabolas, and its longitudinal (ZFM for 1911, Vol. 19, Page 250, and for 1922, Vol. 12, Page 169 and Vol.
ter lines of door tracks; its width 325 feet center to center of arch pins; and its height 197½ feet from center of T Friedrichshaten, feet, six and also ers), a width of 150.8 feet (46 meters) and a height of 114.8 feet 35 meters). At Orly, France, two reinforced con- *Wilbur Watson & Associates, Architects & Engineers. inches. Purpose: Comparison with Other Airship Docks: Building the World's Largest Airship Aeronautical Considerations: oratory in France. at Dresden and Liegnitz in Germany to say that sections taken across The largest hangars so far construc- much the largest single uninterrupted Factory and Dock connected by a straight line. of the building.
furnished valuable information in re- cause the least practicable interference operations may not be complicated by Goodyear-Zeppelin Corporation at Akron, Ohio suction or outward pressure should be A Complete Description of this Giant Structure of the experiments made at the Auteuil Lab- meeting an obstruction, such as a large All of these hangars have vertical in Germany by Prof. Gruning and by These hangars, and most others built are corroborated by similar tests made rector of engineering of the Goodyear it is essential that the building should parts of the building which causes a gard to the magnitude and distribu- stein and his assistant, Dr. Klemperer, two the long way. The largest hangar built by the Brit- Size and Shape of Building: taken at three-fourths of the exterior. Its shape has been well described as the shape of this building.
The length is i175 feet between cen- of airship operation is the launch- height of 170 feet. height from the floor to the platform a half egg, or a better simile would be The floor area is 364,000 square feet, a half of a silkworm's cocoon, cut in having a length of 787.2 feet (240 met- Lakehurst, N. J., and at Belleville, Ill. Nathe first of the two ships, the ZRS4 completed by the Goodyear-Zeppelin Cor- ships will be identical in size. The com- pleted ship has a length of 785 feet, a of 6,500,000 cubic feet, and is much the The building, however, was planned and force the roof the Navy. It can easily accommodate an section of this Akron building, Dr. Karl Arnstein, di- 603 ½ service, and having a length of 850 hangar The high. cross currents created by the building These results obtained by Dr. Arn- center outward. The former recommends that the Circle at left shows man on steel work.
extensive tests made on a model of arches, with sliding doors at the ends. Daniel Guggenheim School of Aero- Hangars of similar design, although nautics of New York University. The tion of the suction forces caused by for the Goodyear-Zeppelin Cor- section also forms two half parabolas smaller, have been built and operated largest airship ever built. approximately 55,000,000 cubic feet. the use of this design at Akron, had suction tending to wide (184 As is well known, the wind, when DERHAPS the most difficult part this shape in the wind tunnel of the semi-paraboloid in shape, that is airship of 10,000,000 cubic feet capacity. was built, the action of the wind on the surface (20meters) at the top is 211 feet. - WILBVR - WATSON - AND -ASSOCIATES - - SCALE-ONE INCH-60° . - CLEVELAND - OHIO - It is vitally important, therefore, equal to the full direct pressure.
Amer- Observa- Orientation: navigating weather. rection of the winds prevailing during increased currents can readily be seen. ican practice in designing buildings to Lakehurst hangar against a cross wind creased local currents, the usefulness should head into the wind when tions on air currents at the Lakehurst door at Akron. Graf Zeppelin cannot be docked at the that the ship should have access to its neglected the importance of these suc- currents around the open doors (slid- has expressed it which determined the use of the semi- velocity of 10 miles per hour, because the hangar should coincide with the di- cated that the outward force should be GOODYEAR-ZEPPELIN.CORPORATION "shed" in England, and either a "han- - AIRSHIP-FACTORY -G -DOCK DR KARL ARNSTEIN V.P.
E DIRECTOR airship like maximum for each case, the great im- "Whatever flies, roosts," and up to this landing, the longitudinal axis of time, no roosting place has yet been like the south 30°west, approximately. spherical, resist wind pressures has heretofore As the launching or docking of an of the dock itself is increased practi- tion or outward pressures. roosting place in the worst possible the local currents are as high as 20 against a wind greater than a certain miles per hour,and another type of The experiments of Dr.Arnstein indi that of the prevailing wind. It is this factor ing type) may obtain a velocity twice "orange-peel" OP ENGINEERING .DATE JVLY TION to fill in the low parts of the site.
Load - feet of sand, gravel and clay underlaid foot 45 degrees to horizontal 30 pounds crete piles, a concrete service tunnel of the building, and lines of concrete arches are fixed in position, while all allowing it to expand freely as a ture, a motion which is taken up partly transmitted to the doors, and absorbed forces of plus or minus 12½ pounds, sliding doors, 93 per cent. end Substructure: terials. Working Stresses: nine inch layers and rolled.
Expansion and Contraction of Frames Assumed Loads and Stresses: cordance with Standard Specifications required and carrying maximum loads On sheets and purlins and rafters and clay after removing the muck and the full length and one-half the width pressures distributed as indicated on On all surfaces inclined less than Preparation of the Site: All steel to be manufactured in ac- concrete footings for the arches, car- of muck from the site of the building was about 1036, with little chance for and fill in with about six feet of se- cost were made of the following types the building site was about 1038, re- Snow Load- On arches 30 from the arches, concrete door circles 15 pounds in combination with maxi- under the maximum range of tempera- Aon all sheets, purlins and raft- design with sliding doors 111 per cent.
of about two feet of muck and 28 deemed best to remove the two feet C-A direct horizontal wind pres- ers +80 pounds per square foot for Wind Load- Dead Load- quired the removal of about 1,000,000 65,000, yield point 30,000 minimum. This also because it proved to be economical across the building laid the arch and 40 pounds for the lower.
shape and type of structure pre spherical doors, 100 per cent sliding doors, 103 per cent (Lakehurst.) In making this comparison, a verti- load, 24,000 pounds on structural grade and 32,000 pounds on silicon steel diagonal and The soil consisted This general For maximum stresses due to wind design was selected not only because others are carried upon rollers, placed these trusses carry light trussed rafters chords as ordinarily used in this coun- liminary designs and estimates of ship conforms to the requirements of Structural Design: bracing system for the structural shell, In general the structural design as span into position from the ground to move laterally about four inches Closeup showing one corner of a span sec- taken up by reinforced concrete ties Notice the counter- of structures: vertical and horizontal trusses above On laterals 20 pounds per square cubic yards of earth, which was used ferred to sea level.
of American Society for Testing Ma- cept the chords of the main arches, lected gravel and clay from the adja- This allows the end arches, support- zontal clearance of 240 was assumed, the Stress Analysis Department of on these are placed the Z-bar purlins ried on vertical and inclined concrete the Deitz System of bracing. meeting the ing the upper door pintles or hinges, This system is known abroad as pressure diagram derived from ex- for supporting the rails carrying the HE general design is carried out and Lateral Deflection of Arches: docking rail supports. The piles are of developed by Wilbur Watson & Asso- type with 1000 feet. transversely to the axis of the struc- similar arched and braced ribs. Carbon steel ultimate strength 55,000 sure of 15 pounds per square foot NE of the unique features of this placed under the building floor.
the McArthur type, about 1300 being Silicon steel ultimate strength 80,000 spaced 10 feet 0 inches on center and arches at the pins, which are 80o feet in combination with dead load only. Load (B). of the arches instead of the system of end of the main shell are placed two AHE Akron building is located in cal clearance of 180 feet and a hori- Type "A"Low hinged type with arches spaced 80 feet o inches on cen- line, is provided and under this runway rivetting up the lower chords after the T1HE most unusual and unique tea These devices consist of a very large surface, held with a pin at its pointed peel as 202 feet high, 214 feet wide at pressure against them, the doors alone 1200 tons for each end of the building.
running on a track, similar to railroad in diameter, running on the two rails, door tending to fall inward, but it does to be in the clear of the open yard in standard railroad gauge, are used under cient strength to tip it backwards, door at the bottom, just above the always fixed in the same spot, although volves the "bull gear" slowly, the rack All of the reduction gearing, includ- on all of the forty wheels, each wheel pin is 17 inches in diameter, about six feet long and the bearing ball is about Derke for holding is on the armature inforced concrete, ten feet wide and The gear stops and cannot be started again Door Design: Not considering the snow that may The radius of the curved standard not need to carry any vertical weight side pressure against it caused by the The pin cannot be regarded as being for operating them.
is built as a part of the circular run- Because it is not practicable to so motor through a worm gear reduction. must be under control at all times and necessity of slipping one wheel contin- ment of the hinge pins, the horizontal boxes which rest against heavy springs. down from the hinge pin above. is a series of concrete piles driven is driven back and forth and pushes to bind against the curved rails which ually as the outer wheel would have to of the building are secured by heavy mount this heavy leaf so that it can be connected up to drive the doors at wind tending to back off the gearing.
that the weight will be equally divided imagine this one-eighth of an orange more until the weight is more evenly for the doors are buried so that just the the sun's heat will cause expansion and because in a building so large as this be moved back and forth is on wheels rack built to surround the base of the can move up and down on the pin four mounted on a separate short axle be- It is estimated that the pressure If one can visualize a quarter of a expansion and contraction. concreted in below the floor line. tween the rails from a point projected zontal at the top where it bears against by the deformation of the door frames. erection of the steel.
set with a time limit so that a second The motor is special in that it is If one wheel, then, gets more weight provided, spaced four feet apart, side three hinged arches into two hinged by shaft of the motor and is a so-called steel frames to the roof girders and a capable of being used at two speeds and the bases of the rails and ties are all top and resting on a set of rollers dis- 450,000 pounds outward, depending on doors on other end open) is of suff- carried is 187.69 feet to the center be- the door along with it. To maintain a level yard, the runways tons of metal are used to make it fast, selves to fixed concrete base just outside of the bottom, fastened or hinged at the not operating mechanism for opening and way foundations.
force and excessive wear due to the than its neighbor, its springs will give To carry this heavy weight on the thrust bearing is made a ball and The bearing travel a greater distance than the in- wheels there would be great loss of change in height of the door due to the important fact that these doors against the pin may reach a maximum build a large structure of this nature loads it was decided to convert the base,he would have an idea of what not subject to starting off by them- accumulate on the doors or the wind closing them. ture of this building is doubtless The pin is required to resist the For these reasons and further, for roof and wabble the pin around sev- weighing 100 pounds per yard each, contraction that will move the entire each leaf of the doors. rection within moderate limits. which time the pin is required to hold the hangar is like.
up in cast steel frame mounted on a points of the doors to the main shell Putting the third arch together.Notice the span between the two upright haunch members deep enough to go below the frost a maximum speed of 20 feet of travel blowing through the building(with to solid rock. 30 inches in diameter. per minute or at 40,as desired.The The wheels are spaced almost uni- inches each way to provide for the top point with a huge hollow forged "self locking" so that as soon as the the door from being blown out. formly in pairs under the long curved separate pin for each leaf of door is power of the motor is shut off, the steel, double fanged wheeis,27 inches weigh about 600 tons for each leaf or tops of the rails are on the yard level by side.
ground a curved runway built of re- wind, it was one leaf of two that close one end of half of an orange peel set up on a flat the dock at each corner of the ing the worm gear, are of heavy, sub- or so can be allowed for the motor to door operate them, the door comes to in motion, but ordinarily much less. may be, automatically. are geared tor about 12 to 15 teet per 40 feet per minute. quired to resist a load of 600 tons in The door F. E. Hulett was associated with speed between limits of o to 40 feet Watson & Associates, as consultant on door causing the motor to slow down. When tor to decelerate to half speed and below, normal torque on motor, the final slow slow speed until the final stop at which erated brake is so arranged that after cut- ting off power, there is an inherent time dirigibles.
Electrical Equipment: This makes it only necessary for the units so that as projections from the can be no objectional sparks from the Erecting the third arch of the dock. ual application. Electric cutout switches are mounted ially to slow down and stop. mechanism does not retard them per- the door after which it will open and The driving units are set under sep- the roller bearing would without doubt This device is stop would be increased so much as It is estimated that the door can be control switches in case hydrogen gas For those interested in the details on the runway adjacent to the driving dary resistance left in the circuit on the This at once raises the question as ceptibly-the high pressures dissipate up on a continuous bed plate. It has been found from similar gears by manual control as well.
ate unevenness in construction of the The intermediate gear (cast steel) has to make the braking problem and the The entire unit is set the second slow-down switch is encount- thrown into slow speed connections with estimated that it may require at times in that direction. This inserts secondary arate roofs outside the hangar for the opened or closed in five minutes time. HE door operation is as follows: begins to stop it too suddenly. tomatically as the two leaves come to- speed is approximately one-third of the to why roller bearings were not used the rack by jack screws and a spring, less travel speed because of the fact The rack in which the "bull gear" connected by a flexible coupling and is by its pressure due to the worm gear that impact varies as the square of a that an accumulation of snow or ice tendency to largely increase the effort 9"cir. pitch and will have 22 teeth.
it might be well to state that the bull speed of 600/300 and is arranged for a rack is rigidly attached to the bottom as 50 tons pressure to start the doors tion is the same as outlined above. motion and bring it toa smooth slow would be inclined to figure for a much wheel is of cast steel cut teeth, 9" face, gether at the center, or as the doors 440 v., 3 ph., 60 cycle current with a plain bearings, they would, on the other down and top speed. low speed winding. With 80 to 100% from the equipment, including the hy- draulic operated brake. The hydraulic op- lag of seconds before the Y-BL-200/100 H. P., General Electric and between warrant. power time disconnected ered, Motors. rack. cannot increase the speed materially against the rack resists the outward The driving pinion is shrouded, has minute as against this construction 20 minute rating.
similar hangars in this country, which and the constant speed motor. They pinion on worm gear shaft has 16 allowing limited variation for moder- reason that the pressure of the gear The motor is hand, similarly increase the more ser- secondary resistance. This causes the mo- against the track wheels under the depending upon the amount of secon- The operation in the reverse direc- smooth control more difficult than the door should perhaps be made and its outboard bearing and with shaft ex- slow-down limit switch is encountered The wheels are made with a contour that the setting of the brake is a grad- and third motor provided with a heavy torque of the doors.
a slow down and creeping speed, au- resistance in the high speed winding, the operating equipment for these slight saving on the power bill would continues at full speed until the first tion of the amount required for the speed as they approach the ends of The motors are four Type MIT-566- 14° - 17lead angle. The effort re- this. First, the fact that assembly would ing torque of approximately 1200 pound be done by artificial light owing to the interference of the assembled ship with \HE main floor is other utilities, is brought to the build- port for holding down clamps. At first, converted into 460 volt, 60 cycle, three operated by a man at the top or from 10' 0" centers, as well as holding down main distributing panels which are lo justable projectors of 1000 watt capacity each, located along the catwalks, from O wral light is pro vded and all op- and hoist landings.
Outlets for extension cables are pro- two counter balanced cars running on carrying additional working platforms. curing the ship itself. Six secondary transformers are located The general lighting consists of ad- Mechanical Equipment of Building: probably require continuous work, day seven lines of outlets along the cat- side of the building. pacity that they will provide a retard- The offices and shops are heated and a half to two and a half seconds. These runways will carry six ton elec- The motor mounted brakes are Gen- two 12-inch I-beams designed to carry end for motor mounted brake. centers, embedded in a 12-inch slag cated between the chords of the arches. contraction of the main building frame, inserts for holding down clamps spaced the designers proposed a wood floor, and on which the workmen engaged in inch rolled slag base, was substituted. the light from the outside.
At each side of the crane tracks are phase for power which is delivered to and shops entirely independent of the Light and Power: them, to meet insurance requirements. turn and roller lever; sixteen of these Access to the upper platform is pro- especially at the ends of the building, building located adjacent to the main the gas lines for inflating the gas cells. This floor will have especially designed Eventually it is ex- units, and electric heaters will be used it was necessary to build these offices On account of the necessary ex- erating this elevator are located on the S THIS building is primarily a the full length of the building and at the ship and it is essential that it should be level and provide ample sup- at both sides of the building, and in and materials to the upper levels.
HE engineers consider it useless arcs, can at no time be the cause of a ered and raised to any desired height, crete floor, six inches thick on a six- HE building is 325 feet wide be- the full length of the structure and lo- site at 22,000 volts to a transformer 640 feet long. nals, interlocks, starting duty resistors, either car, as desired. 65 to 150 feet above the floor, and is only 240 feet. and accompanying times. stop. employed. lighting purposes. gas explosion. same building with the transformers. making skylights water tight and the tric hoists for handling material. factory for the construction of circuit limit switches with spring re- for shops and offices on each side of Distribution is ac- There were three reasons for doing pected that shops and offices will oc- a curved track but so built that the east side.
cludes the necessary panels, switches, at convenient distributing points just working platforms which can be low- The electrical equipment also in- fact that even with ample windows, and by a specially designed inclined outside the building walls, designed to ing underground, as no wires can be main building and it was also neces- rings, also specially designed for se- The motors and drums for op- much of the work would need to for opening both sides of line on final side of the building near the center, At the center of the structure there Electric current is brought to the this plan was abandoned and a con- catwalks two feet wide, also running sary to use fireproof construction for width for assembly of the ships Shops and Offices: lighting is also provided at all stair cated outside of the building so that operating push buttons and 24 double This leaves a space HE main floor is used for as- posure of this floor to the elements, the building about 42 feet wide by on the floor and on the working plat- switches are for slow down and eight vided by two stairways, one on each they will be confined to the east pine on 6"x 6" sleepers, three feet on structure in the future, it is intended Goodyear-Zeppelin - P.
W.
Litchfield, president of the Good- ing and capable of boosting the normal incombustible, watertight, inexpensive, main, and from that point a 10 inch Each of these outlets at trusses on the main floor, on catwalks and on the foot, applied in a similar manner, with All of the elements of the roof to be on top platform from where it is dis- secured by positive fastenings, roofing the steel purlins to be capable of with- standing a test load the same as that this height; then assembling the center All main feeders from switchboard are erected, and the drums of the locomo- to the building structure center arches have fixed shoes, the bal- ance being supported upon rockers, al- is desirable that condensation of moist- should be reduced to a minimum, and ering, except the vertical sides, should terior of the main structure, and as- roof, it was decided to insulate only a strip across the top, about 100 feet covered for waterproofing.
and furnish the maximum practicable sign and construction. carried upon the side sections already twelve standard outside fire hydrants, er-than-air development. The engineers of the erection depart- Erection Methods: extending this insulation farther down open position, supported upon the ex- In order to meet these requirements, utilizing a derrick traveller located on the structural work for their building. as was used for the Lakehurst hangar, and twenty-four inside hydrants. ample power supply in the shops. years foremost American exponent of light- clips and bolts securing sheathing to A roofing was desired that would be lowing insulation to be applied in the tributed to the crane and hoist motors. inated wood roofing.
direction the big dock For the upper half of the structure, S NO precedent had ever before as high as these could reach and then It was also requested that a system approximately ten to twelve kilowatts. foot applied downwards or upwards, turers, three of which met all require- end diagonal arches. installed and connected to an automatic contract from the center to the ends. of outside and inside fire hydrants be amount of insulation, as well as meet was excluded by the fire underwriters. mately twenty kilowatts capacity each. originally intended that all of the cov- adopted to prevent any extended shut- are housed in gasketed cast iron boxes cables in fibre ducts laid in concrete, inch to 125 pounds per square inch. ment of the American Bridge Company the same limit of deflection. specified for the roofing material itself.
fire pump located outside the build- Separate power feeders are carried to pressure of 50 to 60 pounds per square The shell of the building is supported top of the arches. the south doors which were erected in struction of the building, which elim- or steep section to be nailed or riveted Only the three a test load of 200 pounds per square the lower sections of a pair of arches Roofing: Water is brought to the pump house the sides if experiments, to be carried A been presented to the fire un Corp- about 100 feet in height, and 80 feet apart, upon temporary bents, placing Metal. for necessary. found necessary to carry this insula- oftem- tive cranes.
Fire Protection: An important factor in the roofing cally met by the Robertson Protected chemical fire extinguishers are distrib- sembled by using locomotive cranes The usual shop lighting is installed especially designed sections were de- damage to insulation derwriters, new rulings were re- bolted to the steel sheathing and all The under- each of the door motors direct from ure on the under surface of the roof bustible materials be used in the con- Erection started with the southerly position by means of counter weights to use a steep surface type of roofing cost of installing this area of insulated IN DETERMINING upon the type developed a unique plan for erecting quired for this building. is being erected.
two arches of the three fixed center Those in the tunnel are of approxi portion of the arches on the ground, This condition, consist of a gang of six heavy duty just east of the building by a 12 inch with a defection of not to exceed two W.C. State, con- P the outside the building, and six inside. together, about one and one-half miles Visitors to the dock will notice two sets pleted July 20th and the erection of the self out into the field at each end of the two steel columns, each supported upon feet outside the building to the southwest and a distance of 1200 feet into the field side handling cars and then, with the aid the center portion of the span, leaving walked out, until its stern is clear of the the balance of the gas, in most cases, doors, when it is allowed to swing into Boyle's law of gases, which states the Total floor to platform 211 feet.
lent to approximately 133 cubic teet ot of a fixed compressor plant comprising parallel to the building, and about 100 were used, mounted on top of the end zontal position, ready for hoisting into and gauges or tell-tales. being nitrogen. The center sections were assembled pressure for reshipment. sheaves were placed for carrying the travellers were mounted on temporary Equipment and Field Forces: The first set of arches was about four feet long and nine inches nishing air for riveting and third for by the cranes upon cradles which com- side sections of the arches consist of The north diagonals were completed ends of the arches and transverse ties eight gangs of riveters were employed. Ground Handling of Airships: The Wellman-Seaver-Morgan Co., Operating Perimeter of arch 562 feet.
The south end diagonals were com- The purifying plant is necessary in MacArthur Concrete Pile Corporation, Con- prised longitudinal girders carrying the driven was about 272,000. Erection of at both ends with forged and welded position by the locomotive cranes. This Cubical content 55,000,000 cubic ft bring them together again in order to The second set of arches was raised For erecting the end diagonal arches During the lifting of the center sec- and the center section. and the upper parts of the doors and method was followed for all the arch free gas, at atmospheric pressure. Inlet louvres 1,600 square feet. used at one time, over which seven lo- The erection bents for supporting the Ventilators eight at 6 foot diameter. Skylights 23,000 square feet.
which served very and goose-necks which gave each a to- Gas Handling and Storage Facilities: and completed September 1st.This The Carle Electric Construction Co., Electric The Kraus Plumbing & Heating Co., Plumb- necessary in moving airships in and out. diameter, each bottle containing about The derricks were operated from the order to remove air and other impuri- cubic feet of gas at 750 pounds pres- of standard gauge railroad tracks were In addition to the seven cranes men- T'-beams and moved by hand winches. center section to pass by and then to tion of the arch truss, the four corners September 16th after being completely under 20o0 pounds pressure is equiva- were kept level by means of weighted Metal doors 2,612 square feet. a 300 ton jack at its base, the function the lower sections enough to allow the Area of roof, 693,000 square feet. to the northeast.
Piling 1,300 required about 25 feet long. to take up the thrust. about 6,500,000 cubic feet of gas each, ployed for erecting steel was about 120. Concrete floors, 7,000 cubic yards. of the jack being to spread the tops of The gas is shipped from the field in having a length of 80 feet, and closed tal reach of about 125 feet. and 80 feet long, carrying two stiff leg lines from the stern are affixed to the about 20 per cent to be lifted by the fourth, August 27th; and the fifth set booms, and two with 105 foot booms of the dock, are used tor the operation weighs more than 10 tons, and which are will use only Helium gas, provision of ground parties of men, the ship is special tank for transporting Structural steel in doors, 1,900 tons Dr. Karl Arnstein, Director of Engineering for The ground. The erection plan involved the use arches near the center. Zeppelin Corporation. feet therefrom.
were closed November 25th. Alongside this track south door was started August 3rd small steel containers, called bottles, Physical Data: sembling the arch sections in a hori- Airplane doors 1,580 square feet. During most of the erection period, necting up taking about six hours. S THE airships built at this plant tioned, the equipment used consisted Speed of Erection: The traveller used on top of the Reinforcing steel 700 tons. 5,500 tons. The Burger Iron Company, Structural Steel raised into position on May 22, 1929, Length, center to center end doors, 1175 feet. Structural steel in shell and shops, etc., removal at intervals. effect the closure between the sides Interior floor area 364,000 square feet. stiff leg derricks with 90 foot booms gas fields, the gas of which contains two Each center section erected weighed about 360 tons.
of the ship or into the storage cylin- When an airship is to be walked out, pressure of about 2000 pounds. As Vertical sash 28,000 square feet. million cubic feet of gas in 24 hours Width, center to center hinges, 325 feet. At the top of these columns the horizontal frame about 80 feet wide last set was accomplished in four at about the center of the building, for small building and details. consisting of as- to about 80 per cent of the weight of Concrete foundations, etc., 8,oo0 cubic yards. cylinders or tank cars at 2,oo0 pounds
Block