Second and third floors

3 Second and Third Ploors. The layout of the second and third floors is shown in Fig. 9.2.C, as mentioned in the discussion of the first floor the instrument and control rooms are on the second and third floor levels. These two rooms operate much.as a unit with the instrument room having the amplifiers and relays and the control room having the indicating and recording instruments for reactor operation. The control room is at the higher level so that conduits and raceways do nq.t come from an overhead position. / 

The third floor level is at the same.elevation as the reactor top. This gives a level 4-ft walkway between these two areas. This walkway provides the main access path to the mechanisms located on the reactor top. 

The second and third floor levels extend completel y aCross the building even though the two primary room s require somewhat less than half the total area available. A rest room, toilet, chart storage room, stairwells, elevator 

Standard metal partitioning is used for the wall construction around the instrument and control rooms, adding flexibility to the design. These rooms can be made larger or smaller o.r additional rooms can be added without upsetting reactor operations. The wall construction used is completely solvable. 

Other features of these floor levels are the following  

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Flat-slab Floors. A flat-slab floor is a reinforced-concrete slab built monolithically and using a top-spread column support without the aid of beams and girders. In Fig. 8-16 the second and third floors are flat-slab construction. It is ideal for industrial buildings with live loads of 100 psf and square panel spans of IS to 30 ft, but the flooring must be... 

Beactor Control and Instrument Center. The reactor control and instrument center is composed of an instrument room-and a contro1.room, respectively, on the second and third floors of the lean-to section on the west side of the Reactor Building. The control room, directly above the instrument room, is at the level of the reactor top with access thereto by a connecting walkway. A stairway connecting these rooms facilitates the maintenance of associated control and instrumentation devices. The partition walls of the reactor control room are formed of sectional metal construction,... 

Reactor Building - Second and Third Floor Plans... 

Corfiato and opened in 1961 (11-storey building on right) and 1964 (smaller building on left). Chemical and Biochemical Engineering occupies much of the sub-basement, ground, first, second and third floors, while the Electrical and Mechanical Engineering Departments occupy the remainder. 

The distribution of strains along the bounding columns of the walls shows that the ones for the ground floor are much larger than those of the first floor, while those of the second and third floors are negligible. 

A home owner installed a replacement gas valve on a floor furnace. It has two temperature limit switches. He connected the first temperature limit switch to the first and second screws and the second temperature limit switch to the second and third screws. He did not remove the connector already in place. He connected the third and fourth screws to the thermocouple. 

Expansion of diagonal cracks in MRM infill walls of 1st and 2nd floors was the main damage observed during D2-1 ground motion (Fig. 10.9). The IDR demands reached 0.32, 0.41, and 0.32 % at first, second and third stories, respectively, at the maximum top displacement of 14.5 mm. As the time span of D2 ground motion applications were all different (Fig. 10.7), the first 2.9 s of all D2 motions common in all tests were considered, in order to compare the maximum IDR demands of the test subjected to successive earthquakes. Fig. 10.9. 

During the D2-2 ground motion, new diagonal cracks opened up in infill walls in addition to existing cracks. Moreover, new shear cracks were observed at the joints of the middle bay of the first floor. Shear and flexural-shear cracks formed in the bormdary columns of the first story s infill wall. Flexural-shear cracks were also observed at the ends of some beams (Fig. 10.9). The IDR demands were measured as equal to 0.51,0.58 and 0.57 % for first, second and third stories, respectively. The measured maximum top displacement was 23.4 mm. 

Similarly, the floor displacements due to the second and third modes are... 

The liquid reagent, a polyethylene glycol-based mixture, is heated and applied to the surface (particularly floors) using a sprayer or brush. The reagent is then allowed to remain in place. (Second and third applications are common.) When it penetrates up to 2 inches, the liquid contacts the PCB and reacts to form non-PCB byproducts. The technique is currently being tested in the United States and should soon be available for certain specific applications. 

The top levels of management at T are primarily U.S. citizens. The second and third levels of management are, for the most part, Mexicans trained in the United States or heavily indoctrinated in the U.S. way of doing things. In addition, there always seems to be a sufficient number of U.S. advisers sent by either the home office or one of the U.S. automobile manufacturers. These advisers work on the factory floor and try to keep production running smoothly. 

The second- and fourth-floor walkways were constructed one above another along the west wall of the atrium. The third-floor level walkway was independently suspended from the atrium roof trusses and was built about 13 feet toward the center of the room. The third-floor walkway was not involved in the collapse. The second-floor walkway was suspended from the fourth-floor walkway, which in turn was suspended from the roof framing. 

We used to have computers in the science area. .. As they (computers) became more popular, the administration decided to establish computer labs in the buildings so that all students would have access to them. .. In our building the chemistry department was on the third floor and the computer lab was on the second floor. .. The students were always down in the lab using the... 

Firefighters have to be able to read, understand, and act on complex written materials—not only fire law and fire procedures, but also scientific materials about fire, combustible materials, and chemicals. They have to be able to think clearly and independently because lives depend on decisions they make in a split second. They have to be able to do enough math to read and understand pressure gauges, or estimate the height of a building and the amount of hose needed to reach the third floor. They have to be able to read maps and floor plans so they can get to the emergency site quickly or find their way to an exit even in a smoke-filled building. 

There are three layers in decorative floor covering. The second and the third layers are made from PVC with composition given in the table above. The surface layer is made from polyethylene terephthalate film which protects decorative patterns printed by gravure printing under polyethylene terephthalate film. 

It is clear that the joints were not sufficiently stiff to provide sway restraint. Although the first and third storey heights were to contain partitions the second storey height would have contained only non-load bearing partitions. As it happened none of the partitions were completed at the time of collapse. The structure was in a state of unstable equilibrium and it needed only a small disturbance to precipitate collapse. The failure of one of the joints on the second floor therefore triggered a collapse of the whole building. 

What is the connection between the rate of a process and its pathway Suppose that there are several hundred books in a storeroom on the first floor and that you have been hired to move them to the new third-floor library. Depending on the conditions, there are a variety of possible pathways. One pathway might require the following steps (1) put 10 books (the maximum number you can lift) into a carton, (2) carry the carton up one flight of stairs to the second floor, (3) rest a bit, (4) carry the carton up another flight of stairs to the third floor, (5) empty the carton, and (6) return for another load. Another pathway might involve a different series of steps (1) fill four cartons with books, (2) pile the cartons onto a dolly, (3) push the dolly onto the elevator, (4) ride to the third floor, (5) push the dolly off the elevator, (6) empty the four cartons, and (7) return for another load. The second pathway would probably be faster than the first. To compare them quantitatively, the rate for each pathway could be measured in books moved per hour. 

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