Part 6

HOUSE AT PENNSYLVANIA, EXETER, ENG. MR. JAMES CROCKER, F.R.I.B.A., ARCHITECT, EXETER, ENG.

This house has recently been completed for Mr. E.C. Philp, and stands in one of the best suburbs of the city. The materials employed are Wellington red brick for the facings above plinth, with Broseley tiles for the roofs, the few stone dressings being of Ham Hill. The walling up to the plinth level is of Westleigh limestone, as are also the piers surrounding the site, with wrought-iron railing between same. The principal chimney-pieces in the house have been made to special design, and are chiefly executed in American walnut and pitch-pine. The dining-room is panelled the full height up to a richly-modelled frieze in plaster, all to design, and the ceiling of this apartment is also panelled.

DESIGN FOR BOARD SCHOOLS. MR. GEORGE W. WEBB, A.R.I.B.A., ARCHITECT, READING, ENG.

This design was prepared in competition for schools near London, but, owing to a mistake in the date for sending in designs, it was too late for the competition. The plan is on the central hall system for boys and girls, the hall being 110 feet by 54 feet, and top-lighted. Fourteen class-rooms, each 30 feet by 20 feet, are provided, each divided from the central hall by movable glass screens. The infants' school, lodge, etc., form detached buildings. The total cost was estimated at £16,000.

FOOTNOTES:

[Footnote 5: It should always be kept in mind that these illustrations from the "_Baronial and Ecclesiastical Antiquities of Scotland_," by R.W. Billings, are republished very largely for the sake of giving instruction in one manner of the rendering of architectural drawings.]

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METHODS OF REDUCING THE FIRE LOSS.[6]

The liability to injury by fire is a hazard inherent to all buildings, and this danger is a constant menace whose threatening destruction of values imposes upon the owner a persistent consideration, which endures as long as the building stands.

As every method of construction, the various mechanical processes and the stock in each stage of manufacture bears some relation to the fire-hazard as a supporter or possible originator of combustion, the engineer whose duties pertain to these matters must necessarily also consider the question of the fire-hazard in the important phase of prevention, as well as the direct application of those engineering problems required in the design and installation of fire apparatus.

The fire-loss is a most oppressive tax, much of which can be abated by the application of well-established means of prevention. In a practical sense, certain fires are to be considered as unpreventable, being caused by exposure to fires in other burning buildings, but there are very few fires whose destructive results might not have been prevented by the exercise of precautions entirely feasible in their nature.

These several topics will be considered in reference to the reduction of the fire-loss on isolated manufacturing property, because the exercise of every possible precaution may not avail anything if the property is liable to be imperilled by fires originating in adjacent buildings.

SUPERVISION.

The prevention of fires must in greater measure proceed from the efficiency of the supervision exercised over the property in the order of the buildings, heed to probable causes of fire, and attention to the fire-apparatus.

In a manufactory there is a wide distinction to be made between to-day's dirt and yesterday's dirt; valuable results may be obtained by an inspection of the whole property made on Saturday afternoon by two men, such as foremen or overseers of rooms, who may be appointed to serve four weeks, their assignment terminating on alternate fortnights. The report should be made on a sheet of paper, divided so as to include all features of order and fire-apparatus in every room.

As property should be watched during the day Sunday, as well as at night, it is under the care of watchmen about five-eighths of the time, and the measure of this responsibility should be clearly understood.

The patrol should be recorded on a watchman's clock, not merely to show that he was not unfaithful, but also to prove that he was faithful.

Especially in districts liable to disorder and lawlessness, it is desirable to have a district-messenger signal-box in the works, visited once an hour, with the understanding that if the call is not made within fifteen minutes of the appointed time, it will be assumed that there is trouble and help sent at once.

Safety requires that the lanterns should be securely guarded; that the handle and sustaining parts of the lantern be connected together by rivets or by locking the metals together without relying on soldered joints; and thirdly, that the lamp should be put in from above, and never from the bottom.

CONSTRUCTION.

In its design, a mill for any standard line of manufacture is not a building whose arrangements and proportions are fixed upon at the whim of the owner, but it must conform to certain conditions of dimensions, stability, light and application of power to satisfy the requirements essential for furnishing every advantage necessary for producing the desired results at the lowest cost.

The destructive consequences attending fire in such buildings, whose iron and masonry construction is called fireproof, show that some other form of construction is necessary to obtain the desired results of minimizing the annual cost of the maintenance of the invested capital, as represented by insurance, depreciation, interest and taxation. There is little incentive for entering into unusual expenses in the construction of a manufacturing building for the purpose of increasing its resistance to fire, unless the additional interest on such increase in the investment is to be met by a corresponding reduction in the annual cost of the fire-hazard. In addition to these questions, involving the annual maintenance of the plant, the increase in the expense of the building above a certain point may prove poor management, by locking up capital for too long a time, and may tend to prevent the improvements in arrangement and construction which are necessary for the most advantageous manufacturing.

The method of mill building known as slow-burning construction combines the advantages of low initial cost and great resistance to destruction by fire, the final result being that the manufacturing is housed at the minimum annual cost. The fundamental principle of such construction is to mass the material in such a way that there shall not be any concealed spaces about the structure, and that the number of projections of timbers, which are more easily ignited than the flat surfaces, shall be reduced as far as possible; that iron portions of the structure shall not be exposed to the heat of any fire in the contents of the building, and furthermore, that the isolation of the various portions, both in respect to that of one building to another and of the various rooms and stories of the same building, shall be as complete as is feasible.

The most important feature is that of the mill floors, which should be laid on beams, generally of Southern pine, 12 x 14 inches, or two inches larger when required by unusual loads or longer span than twenty-two feet. These beams are placed from eight to ten feet apart between centres.

At the columns, beams rest on cast-iron caps.

The support from one column to the next should be made by cast-iron pintles, preferably those whose section is in the form of a Greek cross, as that presents advantages in the way of securely joining them to the timber beams. At the top of the pintle, a cast-iron plate should support the base of the column above.

Timber columns are preferred to those of iron, unless the load is greater than can be sustained by timber.

The floor planks for this type of floor are generally made of spruce plank from three to four inches in thickness, grooved on both edges and joined together by hardwood splines. These floor-planks should be two bays in length, breaking joints at least every four feet.

Above this the top floor, of 1-1/4 or 1-1/2 inch hardwood, is laid, and in some instances the resistance of the floor to fire is greatly increased by laying a coat of plaster on the floor-plank before the top flooring is built. But the general method of increasing the resistance of the floor to fire is by covering the floor and beams on the under side with plaster laid on wire-lathing.

Such a mill floor and columns, while possessing in a very high degree features which offer resistance to the fire, being weakened by the temperature only to a slight extent as they are slowly burned away under the exposure to a very severe fire, also possess the merit of great economy, both as regards the low price of construction, and in that the floor is thinner in comparison with joisted floors of equal strength, saving in this respect, for every floor in a building, about ten inches in height of wall, stairs, belting, steam-pipes, and all vertical connections reaching from floor to floor, a saving which amounts to considerable in the total cost of a building.

The division of mills into various portions by means of fire-walls is frequently not so efficient as assumed, by reason of the lack of fire-doors to satisfactorily fulfil the purpose of resisting fire. The best form of fire-door is that made of two thicknesses of matched boards, placed at right angles to each other and nailed together, being covered on the outside with tin, securely locked together and held to the door by numerous hanging-strips. The door should be secured to the hangers by means of bolts, and not screws, and the rail upon which it runs strongly bolted to the wall. When closed, such a door should fit into a jamb and be securely held in this manner against the wall. Such doors are frequently hung upon an inclined track, and, by some application of highly fusible solder at the catch, are so arranged that they will be closed by the heat of a fire, if not closed by hand.

In this treatment of the arrangement of buildings to resist fire, consideration has not been given to the cost of land, which is, of itself, an important factor in determining what arrangement will be the most expedient for an establishment. Where land is expensive, or there are limitations in the space suitable for building, it is frequently necessary to build mills and shops higher than would be warranted by good judgment under other conditions; but where circumstances will permit it, the one-story mill has been very successful, not merely in immunity from fire, and very low cost per square foot of floor, but also in the advantages of manufacturing, particularly in regard to cost of supervision and movement of the stock in process of manufacture. These are questions which must be determined, not merely in regard to the various processes of manufacture, but the individual needs of each concern; the position of the fire-risk in the matter being that the hazard of a building increases very rapidly with its height, and to some extent with its area.

The extension of one-story buildings over too large an area will not be commended, and certainly, as regards the question of fire, it has a tendency to place too large a property in direct exposure to a very wide hazard.

Some textile mills have been built in the form of the block letter U, this form having been decided upon as giving the conditions of lowest resultant cost. One wing, two stories in height, contains weaving; the other wing, three stories in height, contains carding and spinning, while the engine is placed in the connecting building. The pickers and the boilers are in outside buildings, so placed that they will not interfere with future extensions of the building into the form of the block letter H.

FIRE APPARATUS.

All methods for the prevention of fires fall so far short of the ideal of immunity that there is a necessity for fire-apparatus. The principle of the defence of a manufactory against fire is that of self-protection, by making the installation and management of the fire-apparatus equal to the progress of any fire which can possibly occur.

Fire-apparatus should be kept in service as well as in order. It is no exception to any other machinery, in that practice is essential to obtain any efficient results.

The practical results of private fire-organizations, where fire has occurred, have been very marked; and systematic and skilful work has been the rule, in place of the needless confusion and liability to breakage of the apparatus, which almost inevitably occurs in the lack of such organization.

The details differ with the arrangements and administration of every mill; but the general policy of definitely assigning persons to the positions for which they are best adapted, and where it is presumed they could be most useful, and to practice them in such work, is a rule which is common to all.

A great deal of fire-apparatus is destroyed by freezing water during the winter months, and therefore a special inspection of all such apparatus should be made late in the autumn, when the water should be drained from all portions of the system where there is liability of freezing, and all hydrants and valves should be well oiled, preferably with mineral oil. The hazard from a hydrant or other portion of the apparatus broken by frost, does not lie so much in the probability that disadvantage may result from the disuse of one element of the plant, as in the liability that such a breakage may interfere with the whole system and render it inoperative.

Buckets of water are the most effective fire-apparatus. They should be kept full, and distributed in liberal profusion in the various rooms of a mill, being placed on shelves or hung on hooks, as circumstances may require. In order to assist in keeping them for fire purposes only, they should be unlike other pails used about the premises, and in some instances each pail and the wall or column behind its position bears the same number.

Automatic-sprinklers have proved to be a most valuable form of fire-apparatus in operating with great efficiency at fires where their action was unaided by other fire-apparatus, particularly at night. In mill fires the average loss for an experience of twelve years shows that in those fires where automatic-sprinklers formed a part of the apparatus operating upon the fire, the average loss amounted to only one-nineteenth of the average of all other losses. If the difference between these two averages represents the amount saved by the operation of automatic-sprinklers, then the total damage from the number of fires to which automatic-sprinklers are accredited, as forming a portion of the apparatus, has been reduced six and a quarter million dollars by the operation of this valuable device.

Although there have been numerous patents granted to inventors of automatic-sprinklers since the early part of the present century, yet their practical use and introduction has been subsequent to the invention of the sealed automatic-sprinkler by Henry S. Parmelee of New Haven, Ct., about twelve years ago. This device being the first, and for many years the only automatic-sprinkler manufactured and sold, and actually performing service over accidental fires, to him belongs the distinction of being the pioneer, and practically the originator, of the vast work done by automatic-sprinklers in reducing destruction of property by fire.

Although nearly or quite 200,000 Parmelee automatic-sprinklers have been installed, their manufacture has been supplanted by other forms; and the total number of automatic-sprinklers in position at the present time must be about 2,000,000.

When automatic-sprinklers were first introduced there were many apprehensions that leakage, and also excessive water discharged upon small fires, would be sources of damage. In England this opinion found expression in increased insurance rates in buildings where automatic-sprinklers were installed.

The logic of figures shows that this liability to damage is merely nominal in the case of well-constructed sprinklers. An association of underwriters who have given careful attention to the subject obtained the facts that from the automatic-sprinklers installed in some $500,000,000 worth of property insured by them, the average damage from all causes, except fire, was $2.56 per plant per annum.

Although automatic-sprinklers have proved to be so reliable and effective, yet, in order to provide for all possible contingencies, their introduction should not displace other forms of fire-apparatus, particularly stand-pipes in the stairway towers, with hydrants at each story. The hose at these hydrants should be festooned on a row of pins, or doubled on some of the reels made especially for such purposes. Stand-pipes are not recommended to be placed in rooms or on fire-escapes; and inside hydrants should not be attached to the vertical pipes supplying automatic-sprinklers.

Fire-pumps are generally too small for the work required of them, 500 gallons per minute being the minimum capacity recommended. For a five-story mill there should be an allowance of 250 gallons per minute for an effective stream through a 1-1/8-inch nozzle, and for lower buildings the estimate should rarely be less than 200 gallons for each stream.

Contrary to the general assumption, a ring nozzle is not so efficient as a smooth nozzle, the relative amount of discharge of ring and smooth nozzles of the same diameter being as three is to four. For stand-pipes 7/8-inch nozzles are recommended, but for yard hydrant service the diameter should never be less than one inch, and 1-1/8 inches generally fulfils the conditions of best service.

The yard hydrants should be placed at a distance of fifty feet from buildings, and covered with a house which should also contain hose, axes, bars, nozzles and spanners.

Water-mains about a mill-yard should be of ample capacity not to cause an excessive loss by friction, their diameter being based upon a limit of velocity of ten feet per second for the maximum delivery.

RESULTS.

These methods of supervision, building and equipment do not refer to any ideality, but to measures which have been widely carried into effect for the purpose of reducing the fire-loss; the result of such action being to diminish the cost of insuring industrial property engaged in such normally hazardous processes as textile manufacture and other industries, down to a yearly cost of less than one-fifth of one per cent. This has been accomplished by the consideration of sources of danger and their abatement, and by a course which has been in line with sound engineering principles, and also practical methods of manufacture; and it has thus been proved that it is cheaper to prevent a fire than to sustain a loss.

There has been no attempt made to credit individuals with their share in these features of mill development. They have been the outgrowth of a continual profiting by experience, adopting some features and modifying others. The concurrent action of the large number of minds engaged on the same problem has led to duplication of methods; but the whole progress has been a matter of slow, steady growth, advancing by hairs' breadths, as the result of persistent efforts to adapt means to ends in the endeavor to reduce the cost of manufacture.

FOOTNOTES:

[Footnote 6: Abstract of a paper by Mr. C.J.H. Woodbury, read before the American Society of Mechanical Engineers.]

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THE NEWARK ARCHITECTURAL SKETCH-CLUB.

After a preliminary meeting held for permanent organization December 14, 1889, a constitution and by-laws were adopted, and the following officers elected: _President_, W. Frank Bowers; _Vice-President_, J.C. Swinnerton; _Secretary_, H.A. Hickok; _Treasurer_, W.C. Hudson. _The Executive Committee_ consists of F.S. Sutton, A.E. Hudson, W.G. Smith, L.A. Virtue and E.K. Taylor, together with the officers. It is intended, in addition to the usual monthly competitions, to make a special feature of regular class-work throughout the year, this will consist of courses in constructional work, free-hand drawing, water-color work, plumbing, architectural history, etc. The courses will be under the direction of specialists in the various branches who are club-members. Applications for membership will be received by the Secretary, whose address is 762 Broad Street, Newark. The Club expect to have permanent quarters soon, which will be open every evening to members.

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[_The editors cannot pay attention to demands of correspondents who forget to give their names and addresses as guaranty of good faith; nor do they hold themselves responsible for opinions expressed by their correspondents_.]

AGREEMENT BETWEEN ARCHITECT AND CLIENT.

ALBANY, N.Y., December 26, 1889.

TO THE EDITORS OF THE AMERICAN ARCHITECT:

_Dear Sirs_,--As the services which an architect is supposed to render his client and the compensation for same have been the subject of considerable loss to us through misunderstanding, we have prepared for use the enclosed proposition, which covers most cases in our general practice. In work of such a nature as can't be covered by this proposition, we prepare one specially suited to the occasion, but in all cases insist on a written agreement which we consider is fair to both parties. Should you see in this proposition anything of benefit to the profession, you are at liberty to use same.

Yours truly, FULLER & WHEELER.

OFFICE OF FULLER & WHEELER, ARCHITECTS, No. 86 STATE STREET, ALBANY, N.Y., ---- 189 .

PROPOSITION.

Mr.----

We will prepare for you the Preliminary Sketches, General Drawings, Details and Specifications for proposed----

to be erected at----

for 3-1/2 per cent on the actual cost of same, which is to be determined by the amount of Mason, Carpenter, Roofer, Plumber, Stone-cutting, Heating, Ventilating, Iron-workers, Mantel and Elevator Contracts, including all extras and deductions. In connection with Heating, Ventilating and Elevator, we will either select the apparatus and approve the specifications as submitted by the dealers, or prepare plans and specifications for contractors to estimate on, according to the character of the work in contemplation, and as in our judgment will secure the best advantage to you. The cost of hardware, mantel facings, hearths, back linings, metal bands, electric work and decorations are also to be included in the total cost of said building, but we are not required to perform more than our customary work in connection with the last mentioned items, which is either to select them from manufacturers' stock or have submitted to us samples, sketches and specifications from which a selection is made. Any other work, not mentioned above, that we may be called upon to perform will be charged for at the same rates.

SUPERVISION.

We agree to professionally supervise work constructed from our plans, for an additional 1-1/2 per cent, or 5 per cent in all, where the work is in the city, and inspect work out of city at the same rate per cent, visits not to exceed 2 per month. In any case where a Clerk-of-Works is required, either on account of the magnitude of the job, or the inefficiency or carelessness of the contractors, the cost of same is to be paid by you in addition to our compensation for supervision or inspection, and said Clerk is to be approved by us.