PICRYL
PICRYLThe World's Largest Public Domain Source
  • homeHome
  • searchSearch
  • photo_albumStories
  • collectionsCollections
  • infoAbout
  • star_rateUpgrade
  • account_boxLogin

A woman wearing a headdress

The wall of Tuan Cheng (Circular City) in Beihai Park

[Powerhouse and incline station, Mount Lowe Railway, Mount Lowe, Calif.]

A noodle stall on the footpath

Horse drawn carriage

Painted clay sculptures of Ming dynasty in Dahui Si (Temple of the Great Wisdom)

A man in his shoe repair stall

Wu Men (the Meridian Gate) in the Forbidden City

Part of the Great Wall

The marble statue of a standing camel on the Sacred Way of Ming Tombs

A glazed gateway with a pavilion in Beihai Park

Pavilion

Dafeng Zushi Temple

Wulong Ting (Five-Dragon-Pavilion) in Beihai Park

Umbrella repair man

The Stone Pailou (Gateway) in Zhongshan Park

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Rutenberg Works, opening of powerhouse, Lord Reading's visit

Norris Dam and powerhouse. Night view of Norris Dam with floodlighting. The more spectacular dams of the TVA (Tennessee Valley Authority) are equipped to be floodlit at night and are popular excursion points. Pinpoint lights along top of dam are small lenses in back of the handrail bracket road lighting fixtures. Wet spots on dam are the result of small shrinkage cracks during initial years which later sealed themselves by the sediment contained in the water

Chickamauga Dam and powerhouse. Main office wing of the Shelbyville cooperative is typical of many similar structures. Note the abundance of light and ventilation which is almost revolutionary for business structures in the rather remote areas where most such buildings are located

Hiwassee Dam and powerhouse. Open overlook just off the highway leading across the top of dam. Grading and planting incomplete. Note interesting concrete benches. Overlook shelter at extreme left of photograph

Hiwassee Dam and powerhouse. View of control building (compare description of K 2265). Circular steel cover in front occurs over generator and can be lifted by crane for access to the latter. Control building contains entrance vestibule in center, reception facilities and offices in lower wing with continuous glazing to the left; control room (windowless) and air conditioning (three circular louvers) in the higher wing at right. Note alternating direction of formwork. In this instance, wall panels, 4'x10', were precast and lifted into place by cranes

Dams under construction. Watts Bar Dam, shown here under construction, has a semi-outdoors type powerhouse with an enormous gantry crane (to the right of the picture) for installation and removal of units. The project is further distinguished by a control building which is entirely removed from the hydro plant, being located some 120 feet higher on top of a steep cliff and with direct connection to the switchyard behind. The windowless left wing of the control building houses the control room; the tower-like structure in the back accomodates air conditioning, restrooms, etc. The glass wall, upper level, contains the reception room with a broad semi-circular overlook terrace, the story below the terrace devoted to offices

Pickwick Dam. Control room at Pickwick powerhouse with equipment for first two units in place. All principal lighting is indirect to avoid reflections on instrument faces. Recessed lights along rear wall illuminate back of main panel. Ceiling is acoustic tile; floor, linoleum. Series of glass panels in back of operator seated at desk permits view of generator hall such as appears on K 1849. Also, by means of a balcony visitors can inspect control room through these panels

Chickamauga Dam and powerhouse. One of the headquarters buildings of farmers' cooperatives which distribute TVA (Tennessee Valley Authority) power. With comfortable lounges, meeting rooms, and up-to-snuff shops, garages and offices, such buildings become centers of interest in the small towns in which they are located (quoted from previously written caption). Headquarters building of the rural power distribution cooperative at Shelbyville, Tennessee (see general comments under K 2382). In the design of these structures a certain degree of uniformity is observed to express the fact that they are parts of a nationwide system. The symbol REA stands for Rural Electrification Administration which by engineering, financing, and general guidance promotes rural electrical cooperatives throughout the United States and its territories. Each design is individually developed, however, from the special requirements of the organization and with attention to location and site characteristics

Chickamauga Dam and powerhouse. Two views of visitors' reception room which overlooks Chickamauga Lake from a slight platform at one end, and contains reception desk and entrance to elevator and stairs. Map in mural form over reception desk is used by guard in explaining location and significance of project. Switchyard can be seen through glazed doors of vestibule; on opposite side, entire wall underneath the dedication test (1936-Built for the People of the United States of America-1940) consists of glass and opens view of generator hall to visitors

Chickamauga Dam and powerhouse. Hall off reception room which gives access to a good view of the tailrace through a window, thus making it possible for visitors to observe all essential parts of the project (generator hall, switchyard, reservoir, tailrace) from either the reception room or the hall. It also gives access to the elevator, the main stair, toilets, and to a promenade roof deck over the lower electrical bay of the powerhouse (foor at end). The decreasing height of the ceiling was necessitated by structural considerations ad was exploited for effect. Floor is terrazzo; walls, glazed structural tile; ceiling, plaster

Norris Dam and powerhouse. Elevator penthouse atop dam which also serves as flagpole base. Elevator serves various levels of operating machinery inside dam. Top of dam is developed as roadway with sidewalks. Note handrail projecting toward sidewalk and toe space in parapet to make enjoyment of view more comfortable. Handrail brackets are hollow and contain lights which illuminate the roadway but avoid glare by the use of reflectors and directional lenses

Norris Dam and powerhouse. Norris generator hall. Turbines are enclosed in and below round concrete housings, generators are contained in steel upper portion. In peacetime visitors are admitted to balcony shown at left to inspect control room and are then taken to generator floor. Roof trusses are considered unattractive; later projects are framed with rigid steel arches

Wheeler dam and powerhouse. Visitors' reception room in Wheeler control building. Windows on three sides and overlook terrace adjoining offer complete view of plant and surroundings. Fourth wall used for description of TVA (Tennessee Valley Authority) program. Floor: gray-brown terrazo, divided into large squares by white metal strips. Wainscot, window sills, trim around doorway and curb at footlights brownish-red precast terrazo. Walls burlap covered, painted subdued tan. Windows aluminum. Ceiling and upper part of walls, plaster painted warm gray with warm off-white reflecting circles and cove across end (ceiling acoustic plaster). Lighting indirect. Lights in cove across end of room also throw downward, directed by lenses toward wall display and shielded by aluminum louvers. Behind curb inclined contol lens footlights and louver (aluminum) shielding air exhaust. Supply through ceiling grilles which border ceiling on two sides. Deep trim around doorway intended as shield while passing footlights. Display in gray, black and tan, keyed with general color scheme. Guard's desk of natural oak and ebomized birch, with raised ledge for visitor's registration

Guntersville Dam and powerhouse. Generator hall. Roof is supported by trusses with arched bottom chords, concealed by ceiling made up of asbestos boards on steel furring. Ceiling also serves as insulation and plenum chamber and permits recessing of highbay reflectors which are louvered at bottom to eliminate glare. These reflectors furnish the main working light and throw the generators upon which they are concentrated into strong relief; general illumination of the space comes from indirect reflectors concealed behind the crane relief and turned towards the ceiling. Floor is ceramic tile; wall, glazed structural tile up to ceiling, but of lighter color above crane rail

Norris Dam and powerhouse. Elevator penthouse atop dam which also serves as flagpole base. Elevator serves various levels of operating machinery inside dam. Top of dam is developed as roadway with sidewalks. Note handrail projecting toward sidewalk and toe space in parapet to make enjoyment of view more comfortable. Handrail brackets are hollow and contain lights which illuminate the roadway but avoid glare by the use of reflectors and directional lenses

Chickamauga Dam and powerhouse. General view of spillway with powerhouse in background. On account of flooding hazard entire powerhouse built of concrete. Main generator hall in high portion, electical controls and offices in downstream bay; projecting wing houses visitors' facilities and air conditioning. Roof of downstream bay developed as overlook terrace

Hiwassee Dam and powerhouse. General view downstream. This dam, about 307 feet high, closes a deep canyon in a scenically outstanding section of the North Carolina Mountains. Keynote of design is extreme simplicity. Highway is carried across top of dam

General planning. In the reception room of Norris powerhouse the guide explains to a group of visitors the functioning of the project and will follow up by an explanation of the relation of the particular dam to the integrated system and to the general program of the TVA (Tennessee Valley Authority). See also comments relating to K 1132

Fontana Dam in the mountains of North Carolina, famous for their scenery, will be one of the biggest of the Authority's projects, being over 500 feet tall. (As it is under construction, no photographs are available but a general perspective view is attached in two copies, one of the prints being glossy but the other having better contrast for reproduction.) The downstream face of the powerhouse is developed in part as a gigantic show window. Considerable recreational and tourist development is expected for the vicinity, the Smoky Mountains National Park being next-door neighbor of the project. Visitors will be reveived at the upper level in a small structure marked by the flagpole towrd the right, from where a steep cogwheel car, used also by the operators and for the transportation of minor items, will give access to the powerhouse

Wheeler dam and powerhouse. Detail of reception room, Wheeler control building. For general view and description see K 1587.

Wheeler Dam and powerhouse. Roadway on top of Wheeler Dam, part of public highway. Note open steel rail composed of car building rolled shapes strong enough to act as guardrails for heaviest vehicles

Wheeler Dam and powerhouse. Entrance lobby with access to elevator, stairs, toilets, and reception room and with glass panels for viewing control room. Floor is terrazzo, base same material but precast. Walls are plaster but up to the head of the openings covered with burlap to avoid cracks, retain paint better, and for better washability. Ceiling, acoustic plaster. Wheeler dam and powerhouse

Guntersville Dam and powerhouse. General view of spillway and powerhouse. The latter encloses three units, is intended to extend eventually to a fourth. Note one of two traveling gantry cranes on spillway deck. Main generator hall built in brick because it is in flood-proof portion; downstream bay which houses control equipment in lower stories and offices above is in concrete on account of flood hazard

Wheeler dam and powerhouse. Detail of reception room, Wheeler control building. For general view and description see K 1587.

Chickamauga Dam and powerhouse. Land side entrance to Chickamauga Powerhouse. Visitors and employees enter from the parking space which corresponds to the top level of the generating plant. Once inside, the almost continuous glass wall between the reception room and the generating hall gives the magnificent view of generators deep below. Signs in front are temporary, prohibiting access for the duration of the war. Note gantry cranes at right which operate spillway gates and are also used for the transfer of heavy equipment parts from rail, barge, or truck to the powerhouse

Hiwassee Dam and powerhouse. This plant is in a remote location and has relatively few visitors. The reception is correspondingly small. Its scheme of lighting may be noted. The round holes in the ceiling conceal "downlight" units which concentrate strong direct light on persons and objects from invisible sources. Background lighting is supplied from tubular units laid in coves along two sides of the room which throw light chiefly on the upper part of the walls and the light colored portion of the ceiling. Visible light fixtures are combined with air conditioning outlets and are decorative only. A large window along the left side of the room permits observation of the control room

Norris Dam and powerhouse. View of reception room at the TVA's (Tennessee Valley Authority) first project which was experimental and somewhat small compared to visitors' traffic in peacetime. Guard sits behind special desk with raised rim, used by visitors when they register. Large window behind guard looks out over switchyard and over route taken by visitors upon completion of their inspection trip

General planning. This is a photograph of a display panel typical of the manner in which the Authority puts its case for comprehensive planning before the public. Explanatory material is placed at all powerhouse reception rooms, visitors' buildings and other public contact points. The increased understanding of natural resources, the techniques for their utilization and general planning for human welfare are considered valuable by-products of the Authority's program in themselves

Chickamauga Dam and powerhouse. View of Chickamauga spillway floodlighted at night from visitors' overlook terrace at powerhouse

Norris Dam and powerhouse. Night view of Norris Dam with floodlighting. The more spectacular dams of the TVA (Tennessee Valley Authority) are equipped to be floodlit at night and are popular excursion points. Pinpoint lights along top of dam are small lenses in back of the handrail bracket road lighting fixtures. Wet spots on dam are the result of small shrinkage cracks during initial years which later sealed themselves by the sediment contained in the water

Pickwick Dam. Reception room of a powerhouse which is somewhat difficult to reach (therefore, supplementary visitors' facilities were developed at the opposite end of the dam in separate buildings). Rest rooms, elevators, stairway, overlook balcony, and control room can be viewed either through glass doors from this room or from large plate glass openings of the overlook balcony. Terrazzo floor and base, burlap covered plaster walls, acoustic plaster ceiling. Graphic display is in a shallow wall niche between control room doors; top line shows three functions of projects in cross-sectional perspectives; photographs elaborate on TVA (Tennessee Valley Authority) program; map of valley is applied to specially constructed movable table

Chickamauga Dam and powerhouse. Hall off reception room which gives access to a good view of the tailrace through a window, thus making it possible for visitors to observe all essential parts of the project (generator hall, switchyard, reservoir, tailrace) from either the reception room or the hall. It also gives access to the elevator, the main stair, toilets, and to a promenade roof deck over the lower electrical bay of the powerhouse (foor at end). The decreasing height of the ceiling was necessitated by structural considerations ad was exploited for effect. Floor is terrazzo; walls, glazed structural tile; ceiling, plaster

Chickamauga Dam and powerhouse. General view of spillway with powerhouse in background. On account of flooding hazard entire powerhouse built of concrete. Main generator hall in high portion, electical controls and offices in downstream bay; projecting wing houses visitors' facilities and air conditioning. Roof of downstream bay developed as overlook terrace

Norris Dam and powerhouse. General view of Norris Dam. Spillway in foreground

Norris Dam and powerhouse. Norris generator hall. Turbines are enclosed in and below round concrete housings, generators are contained in steel upper portion. In peacetime visitors are admitted to balcony shown at left to inspect control room and are then taken to generator floor. Roof trusses are considered unattractive; later projects are framed with rigid steel arches

Chickamauga Dam and powerhouse. View of generator hall, looking towards reception room end. Upper row of three large windows is overlook for reception room. Three windows beneath are those of control room (compare with K 2313). Balcony for communication and view in front of control room windows. Roof is carried by rigid steel arches which spring from crane rail level; steel purlins, exposed precast concrete slab. Windows of hall are glass brick for insulation. Translucent plastic discs suspended from standard highboy lighting units conceal view or direct reflection of filaments and reflect spill light onto ceiling, thus generally brightening the space. Floor is ceramic tile; walls, glazed structural tile up to crame rail, exposed concrete above

Guntersville Dam and powerhouse. Closeup view of powerhouse. Note texture of concrete on electrical bay which is typical of most TVA (Tennessee Valley Authority) projects. Pattern is produced by alternating directions of grain in adjoining form panels. Rough-sawn lumber is used to make grain more pronounced. Heavy texture conceals color and surface irregularities of concrete and will become particularly valuable as concrete ages. Office floor is above flood level and has continuous glass brick strip

Wheeler Dam and powerhouse. General view showing four generators of the semi-outdoor type installed. Space is left for addition of four more. Navigation lock in distance, bulkhead section, spillway and power plant following left to right. Terrace in front of top story of control buildings for visitors' inspection of the project

Guntersville Dam and powerhouse. End of spillway deck at navigation lock. Heavy concrete pilings serve as bumpers for gantry deck cranes. Wing houses lock operating machinery and control room

Norris Dam and powerhouse. Door to generator hall, Norris powerhouse. Constructed entirely of aluminum for ease of operation. Transom section removable when required. Function of door is to permit passage of large machine parts and complete transformers. Division into horizontal bands continues scale and appearance of windows on other walls

Norris Dam and powerhouse. Tower at training wall is elevator penthouse. For description of concrete see Guntersville powerhouse

Norris Dam and powerhouse. Tower at training wall is elevator penthouse. For description of concrete see Guntersville powerhouse

Chickamauga Dam and powerhouse. Reception and display room at the Murfreesboro cooperative, typical of many similar structures. Note that the main office and the reception room are not separated except by the reception desk to enourage familiarity between employees and members of the cooperative, and to promote a sense of ownership on the part of the latter

Chickamauga Dam and powerhouse. View of Chickamauga spillway floodlighted at night from visitors' overlook terrace at powerhouse

Norris Dam and powerhouse. View of reception room at the TVA's (Tennessee Valley Authority) first project which was experimental and somewhat small compared to visitors' traffic in peacetime. Guard sits behind special desk with raised rim, used by visitors when they register. Large window behind guard looks out over switchyard and over route taken by visitors upon completion of their inspection trip

Pickwick Dam. Downstream view of first two units of powerhouse. Intended for an eventual length of six, it has been extended to four units since photograph was taken. Assembly and repair bay surmounted by offices and reception facilities, in left end. Concrete shows ordinary formwork composed of tongue-and-groove boards, whereas most TVA (Tennessee Valley Authority) projects make use of special formwork described in connection with Guntersville powerhouse

Norris Dam and powerhouse. Door to generator hall, Norris powerhouse. Constructed entirely of aluminum for ease of operation. Transom section removable when required. Function of door is to permit passage of large machine parts and complete transformers. Division into horizontal bands continues scale and appearance of windows on other walls

Guntersville Dam and powerhouse. End view of powerhouse toward land approach. Enormous glazed door toward generator hall opens in sections to permit passage of heavy equipment for installation or repair. Large glass brick panel illuminates stairway which leads to electrical rooms below and office suite above. Similar stair access at other end of powerhouse

Chickamauga Dam and powerhouse. Two views of visitors' reception room which overlooks Chickamauga Lake from a slight platform at one end, and contains reception desk and entrance to elevator and stairs. Map in mural form over reception desk is used by guard in explaining location and significance of project. Switchyard can be seen through glazed doors of vestibule; on opposite side, entire wall underneath the dedication test (1936-Built for the People of the United States of America-1940) consists of glass and opens view of generator hall to visitors

Chickamauga Dam and powerhouse. Main control room and partial view of balcony in front of it (compare with end wall in K 2304). Large glass panels permit observation by visitors and view of plant by control room operators. Ceiling of control room is assymmetric barrel vault with acoustic tile surface; all light is indirect from reflectors above low soffit along front of room. In more recent installations, control equipment is gray instead of black to reduce eye fatigue by lessening contrast

Chickamauga Dam and powerhouse. Main control room and partial view of balcony in front of it (compare with end wall in K 2304). Large glass panels permit observation by visitors and view of plant by control room operators. Ceiling of control room is assymmetric barrel vault with acoustic tile surface; all light is indirect from reflectors above low soffit along front of room. In more recent installations, control equipment is gray instead of black to reduce eye fatigue by lessening contrast

Norris Dam and powerhouse. Tower at training wall is elevator penthouse. For description of concrete see Guntersville powerhouse

Norris Dam and powerhouse. Corner view of Norris powerhouse showing pedestrian entrance. Behind large window is visitors' reception room. Dam in background with overhanging sidewalk; tower above dam contains elevator machinery

Guntersville Dam and powerhouse. View of entrance end of generator hall from generator floor. Raised platform at end serves as delivery and assembly space for machinery, also as visitors' overlook. Machine repair and electrical shops are located under platform. Offices in downstream wing are served by open corridor, beginning of which is seen on upper floor to the right of the picture. Directly below, control room which can be inspected from entrance platform. Windows of generator hall along sides are of glass brick (as at Chickamauga, also) for heat insulation and easier maintenance

Visitors' buildings. Another view of the Chickamauga visitors' building described under K 2402. The upper structure, mainly of steel with interchangeable window and door panels. The guard station, refreshment concession, and informative displays are within the glass enclosure. The lock control building appears to the left, the upstream side of the dam and the powerhouse in the distance

Chickamauga Dam and powerhouse. View of generator hall, looking towards reception room end. Upper row of three large windows is overlook for reception room. Three windows beneath are those of control room (compare with K 2313). Balcony for communication and view in front of control room windows. Roof is carried by rigid steel arches which spring from crane rail level; steel purlins, exposed precast concrete slab. Windows of hall are glass brick for insulation. Translucent plastic discs suspended from standard highboy lighting units conceal view or direct reflection of filaments and reflect spill light onto ceiling, thus generally brightening the space. Floor is ceramic tile; walls, glazed structural tile up to crame rail, exposed concrete above