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We spent $11,000, which you gave us for this work in 1965, and $11,534 this year, and are requesting $10,000 for next year.

Mr. ANDREWS. How long has that work been going on and what has been invested in it? How much has been spent?

Mr. HENLOCK. A total of $63,000 has been appropriated for this work during the past 5 years.

Mr. ANDREWs. Next item.

INSTALLATION OF FLOOR TILE

Mr. HENLOCK. Installation of floor tile, main building. Every year we ask for funds for work of this nature. In 1965, the allotment was $5,000, this year it was $6,000, and the next year we ask $30,000 to replace the cork floor tile on decks A, B, 37 and 38 of the main building. The present tile on decks A and B was installed in 1929 and on decks 37 and 38 in 1927, and is in very bad condition and should be replaced. There are approximately 39,000 square feet of floor tile to be replaced under this allotment.

Mr. ANDREWS. It looks like that floor held up pretty well, 30-odd years?

Mr. HENLOCK. It did, sir.

Mr. ANDREWS. Is there much traffic over that floor, Doctor?

Dr. MUMFORD. Yes, sir. We have a great number of employees working there. While it is called deck area, several years ago it was renovated sufficiently for a number of people to work there. As Mr. Henlock indicated, this is part of a program of replacement. It is inevitable as time goes on that the floors in many parts of the Library will get in bad condition and it makes it difficult for maintenance and this is part of a gradual program for replacement.

Mr. ANDREWS. I imagine there will be a continuing need for an improvement or repair program each year. Will we ever catch up with this?

Dr. MUMFORD. The repair program will not be needed to the degree that has been true in the past several years. This program may go on for some time before we improve all the floors, but it will not run to a very large item each year.

Mr. ANDREWS. Next item.

IMPROVED LIGHTING

Mr. HENLOCK. Improved lighting, office areas, both buildings, $50,000.

Funds allowed in 1964 and 1966 for improved lighting in office areas will permit replacements on two floor levels primarily, including reading rooms. This still leaves a considerable amount of office and reading room space still to be covered in the program. The funds requested for fiscal year 1967 would be used to continue the work in the main building above the ground floor. Aside from offices above the ground floor, there are the law, prints and photographs, and congressional reading rooms which are also in need of improved lighting. A survey conducted in typical offices, reading rooms, and work areas revealed foot-candle readings ranging from a low of 8 to a high of 62 foot-candles, as compared to present-day accepted standards of 75 foot-candles for Library work.

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In 1964 you gave us $35,000 to start improving the lighting in the office areas. We did not ask for an allotment in 1965, but an allotment of $35,000 was allowed for the present year, and in order to accelerate the program we are asking for $50,000 for 1967. This is one item I think all of us feel is very important because of the low foot-candles that now exist in these areas.

Mr. ANDREWS. There is one thing that seems absolutely essential in a library and that is good lighting.

Dr. MUMFORD. There should certainly be good lighting. For a long period of time we had very inadequate lighting. The circuits were not sufficiently strong to carry adequate lighting. There is a good deal of space in the offices and reading rooms in the main and annex buildings where lighting still needs to be improved.

Mr. ANDREWS. You have converted from d.c. to a.c. in all your buildings?

Dr. MUMFORD. This was done by the architect's staff half a dozen years ago.

Mr. ANDREWs. Next item.

CLEANING AND REFINISHING BRONZE DOORS

Mr. HENLOCK. To clean and refinish bronze doors, west entrance, first floor, main building, we are requesting $2,500 for next year; this will permit cleaning and refinishing the three pairs of massive sculptured bronze doors at the west entrance to the main building, first floor. These were last cleaned and restored in 1960 and the doors are again becoming corroded and discolored and they should again be put in good condition.

AIR CONDITIONING IN ANNEX

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The next item is air conditioning for deck 1, south, annex. amount requested is $10,000. The annex's air-conditioning system was installed in 1938 and is not designed to maintain temperatures between 45 and 55 degrees Fahrenheit and between 15 percent and 25 percent relative humidity, which are the temperature and humidity conditions necessary for the proper preservation of the microfilm collection housed in this area. With these funds we would install the necessary supplementary air-conditioning equipment to maintain the conditions desired.

Mr. ANDREWS. Next item.

REPLACEMENT OF GARAGE DOORS

Mr. HENLOCK. For replacement of garage doors, east side, main building, $3,500. These are five sectional wooden doors that are over 30 years old and can no longer be maintained in reliable operating condition. We would like to replace them with modern metal sectional doors.

Mr. ANDREWS. Next item.

FIREPROOFING IN ANNEX

Mr. HENLOCK. Fireproofing pipe and duct openings, annex, $3,500. At a number of locations in the subbasement and cellar of the annex

there are openings around the pipes, duct work, and conduit where they pass through the walls. In order to prevent the passage of fire through these openings, funds are requested for 1967 to close them up with asbestos or other suitable fireproofing materials, to make them as fireproof as possible in all respects.

Mr. ANDREWS. All right. Next item.

ROOF REPAIRS, MAIN BUILDING

Mr. HENLOCK. The next item is $5,000 for roof repairs to the main building. The last extensive repairs were in fiscal year 1957. That was not actually a replacement of the roof but repairs consisting mainly of the replacement of four large skylights with copper roofing, replacement of gutters, valleys, roof drains, and glass, and patching of existing copper roofing. Leaks are now developing in several places on the roof.

Dr. MUMFORD. Mr. Chairman, may I interrupt a moment? Here are two pictures showing the result of leakage because of defective roof.

Mr. ANDREWS. What do you use to repair the roof? What type roof are we talking about, copper?

Mr. CAMPIOLI. Most of the roof is copper at present and some will have to be replaced.

Mr. ANDREWS. By copper?

Mr. CAMPIOLI. Yes, sir.

Mr. ANDREWS. That is very expensive, is it not?

Mr. CAMPIOLI. Yes, it is.

Mr. ANDREWS. How long has the oldest part of the roof been on that building?

Mr. CAMPIOLI. I understand it has been reroofed only once since the building was put up in 1897, and that was 35 years ago.

Mr. ANDREWS. What substance do you use to repair the drains and gutters?

Mr. CAMPIOLI. We usually lock the seams, in addition to which copper is soldered on.

Mr. ANDREWS. Next item.

BRICKWORK REPAIR TO MAIN BUILDING

Mr. HENLOCK. The next item is $9,500 to point up the brickwork on the building wall and arches in the moat-like passageway located below ground, which encircles most of the exterior of the main building. The building wall is in fairly good condition, but the brick arches spanning the passageway are in a serious state of deterioration. About 90 percent of the mortar joints in the arches need to be raked out and pointed up with new materials to prevent possible moving of the arches from continued action of weathering and freezing. So far as is known, no work of this nature, except minor emergency repairs, has been done to this brickwork since the main building was erected in 1897.

Mr. ANDREWS. On the so-called minor repair jobs, roof leaks, pointing up exterior stonework, and so on, how do you do that work? Do you do it with your own employees or do you do it by contract?

Mr. HENLOCK. We make a study of each item and if we think we can do it more economically by day labor, we do it in that manner.

If we find we can do it more economically by contract, we do it by contract. Take, for instance, the painting of the dome of the Capitol. We used to do that work by day labor but now we do it by contract.

Mr. ANDREWS. That was a pretty big maintenance job.
Mr. HENLOCK. Yes, it is.

Mr. ANDREWs. I am thinking about the smaller items of repair. When we talk about $5,000 for repairing the roof of the main building, that is a big building over there, it has a lot of roof space, and $5,000 is a relatively small amount to spend on repairing a roof of that size and kind. How long has it been since you have done any repair of the roof of that building?

Mr. HENLOCK. 1957.

Mr. ANDREWS. Do you intend to do that work youself?

Mr. HENLOCK. Mr. Foley, the Chief of the Buildings and Grounds Division, has the answer to that question.

Mr. FOLEY. We plan to employ temporary sheet metal men and temporary stone masons.

Mr. ANDREWS. Do you have a dollar limit as to the amount of work you can let by contract?

Mr. STEWART. Usually, when we employ outside sheet metal workers or stonemasons, we pay them prevailing wage rates and supervise them.

Mr. ANDREWS. Can you do it cheaper by contract or by doing it yourself?

Mr. STEWART. It depends on the job. On a job like this roof repair work, it probably would be more attractive to the Government to do it by day labor.

Mr. HENLOCK. We have a statutory limit of $2,500 on work we can do in the open market. Any expenditure above that amount must be by open competitive bid.

Mr. ANDREWS. Next item.

REPLACEMENT OF BOOK CONVEYORS

Mr. HENLOCK. Replacement of book conveyors in the Annex, $200,000. I believe Mr. Stewart would like Mr. Rubel to speak on that item.

Mr. STEWART. Yes, Mr. Rubel.

Mr. RUBEL. The book conveyors in the Annex Building have been in use since the building was completed in 1938. They now are obsolete products with the manufacturer who originally designed them in 1935. Consequently it is impossible to procure replacement parts at reasonable prices and with dependable delivery dates. As a result one book conveyor is being cannibalized to keep the second conveyor in operation. The one that is being cannibalized has been out of operation for 6 months or more and under the circumstances previously mentioned it may never be restored to use.

Mr. ANDREWS. How many do you intend to buy?

Mr. RUBEL. Two, sir.

Mr. ANDREWS How much lost time has resulted?

Mr. RUBEL. One conveyor has been out of service for about 6 months. It is necessary to rob the parts from the inactive conveyor to keep the second one in operation as previously mentioned.

Mr. ANDREWS. How many conveyors are in the annex all told?
Mr. RUBEL. Just two. They are vertical conveyors.

Mr ANDREWS. Is there resulting inefficiency because they are not both in operation?

Dr. MUMFORD. Yes, sir. It impairs the service very much. Material has to be carried by messenger from the bookstacks to the book distribution room. As Mr. Rubel indicated, one conveyor has been out of operation for several months. Conveyors are essential to good service in a library. While this is a large item, I do not see how we can avoid requesting replacement of these conveyors.

Mr. ANDREWs. There has been no modern invention to replace them?

Dr. MUMFORD. No, they are still installing conveyors in new library buildings.

Mr. ANDREWS. Would you do the whole thing on a competitive basis?

Mr. RUBEL. Yes, sir.

Mr. ANDREWs. How firm is that figure?

Mr. RUBEL. That is a firm figure based on an estimate prepared by a major manufacturer.

Dr. MUMFORD. I might point out that the committee did allow money to replace the conveyors in the old building.

Mr. ANDREWS. When?

Dr. MUMFORD. The work was completed about a year ago. They were antiquated, breaking down constantly, and the committee allowed money for their replacement.

Mr. RUBEL. I would like to mention one other item in connection with the obsolete conveyors in the annex. These conveyors were originally designed for operation on 25-cycle alternating current which at the time of installation, was supplied by the Capitol Power Plant. Again, because of obsolescence we have since abandoned the generation of 25-cycle current and when the annex was converted in 1956 to 60-cycle alternating current power we tried to interest the manufacturer of the equipment to supply replacement parts necessary for converting from 25- to 60-cycle operation. They showed no interest in this proposal because the conveyors were obsolete installations at that time. To keep the conveyors in operation at 25 cycles we had to resort to an unconventional installation of a frequency converter to convert the new 60-cycle power to the obsolete 25-cycle operation until the conveyors could eventually be replaced by equipment of up-to-date design.

Mr. ANDREWS. You state on page 123:

Safety devices originally designed to prevent injury to personnel and books are now outmoded and ineffective.

How long has that condition existed, Dr. Mumford?

Dr. MUMFORD. I think Mr. Rubel can probably speak better to this.

Mr. RUBEL. Since I am not in daily contact with the operation of this equipment or with their past performance records with respect to safety hazards, I do not consider myself qualified to answer this question with the proper degree of competence.

Mr. ANDREWs. Have you had any injuries to personnel or any damage to books because of the outmoded condition of the conveyors?

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