PIERRE DUVINAGE OF SPIRAL, STAIRS IRON WORK FOR BUILDINGS Pierre Duvinage 253 BROADWAY NEW YORK ESTABLISHED 1891 Pierre Duvinage Makes SPIRAL STAIRS Post Caps, Wall Plates, Pier Plates and Brackets, Roof Truss Castings and Rods, Trussed Girder Rods and Struts, Special Castings. Cast Iron Columns, Bases and Plates, Wheel Guards, and Jamb Guards, Saddles, Sills, Shutter Eyes, Cast Iron Clean-Out Doors, Trap Pit Covers. Steel Beams, Channels, Angles, T’s, Steel Columns, Girders, Trusses, Wrought Iron Fire Escapes, Balconies, Railings, Fences, Pipe Railing. Window Guards, Area Gratings, Wire Guards for Windows and Doors, Sheet Metal Shutters, Doors, Ornamental Iron Work. Cast Iron and Steel Stairs, Special Fittings for Sewage Disposal Works, Water Works, Power Plants, Revolving Domes for Astronomical Observatories, And all kinds of Iron and Steel Work Required for Buidlings. Prices on Application. PIERRE DUVINAGE, 253 Broadway, New York DUVINAGE SPIRAL STAIRS Patented Feb. 13, 1917. DUVINAGE SPIRAL STAIRS have been erected and approved for their simple, durable construction, as well as their economy in floor space; in offices, stores, mezzanines, theaters, boiler rooms, sewage disposal pumping wells, power plants, gas houses, water towers, moving picture theaters, and may be used in any place where floor space is limited and easy access from floor to floor is required. A 48" diameter stair occupies less than 12.5 square feet while a straight stair of similar propor¬ tions would occupy 44 square feet. PIERRE DUVINAGE, 253 Broadway, New York The regular stock treads of DUVINAGE SPIRAL STAIRS are correctly designed on the cantilever prin¬ ciple and so made that they can be used either right or left hand (cut shows right hand) and twelve or sixteen treads to the circle. By calculating the number of risers required allow¬ ing 8" to 8)4" for each riser, the relative positions of starting and landing points are determined so as to decide whether a right or left hand stair would be best suited. v STANDARD SIZES Treads to Price per foot Diam. the circle in height 72" . 12 16 . 66" . 12 16 . 60" . 12 16 . 54" . 12 16 . 48" . 12 16 . *42" . 12 . * This size is manufactured but not recommended as it is too narrow to easily pass up and down. The 60" diameter being the best to use where space is not essential. The DUVINAGE PATENTED SPIRAL STAIRS are made of the best grade of iron, diamond surface treads, no risers, single 1" pipe handrail and uprights on stairs and around well. The center pipe over which the treads are slipped is 3" or 4" according to diameter and height of stairs. Each stair is assembled complete at the shop, given one shop coat of the best metallic paint, each piece marked and then knocked down for shipment; this arrangement makes the erection at the site very simple. Two men can erect a 10' to 12' high DUVINAGE SPIRAL STAIR in less than one half day. A wrench and a screw driver are the only tools re¬ quired. Prices on application. Give diameter, height from floor to floor and if possible starting point and position of landing desired so that drawing may be submitted with estimate. PIERRE DUVINAGE, 253 Broadway, New York 2 Plain and Ornamental Stairs, straight or spiral, will be designed and manufactured to suit requirements. Correspondence solicited. INSTRUCTIONS FOR ERECTION Erect the center pipe fastening the bottom flange to the floor. Tread marked No. 1 will then be slipped over the center pipe, place in correct position as shown on drawing which is furnished with each stair shipped out, and secure in position with set screw in hub, proceed in the same manner with treads marked No. 2, No. 3, No. 4, etc., until all the treads are in place. The platform is then slipped over the center pipe and the edge of the platform fastened to the floor which secures the stair. Pipe Handrail —Take the upright No. 1 and fasten the flange to the bottom tread with the two bolts as shown on drawing, then fasten the curved pipe handrail to this upright and slip the other uprights over the hand¬ rail fastening the uprights to the proper tread which is usually every third tread. The upper upright is slipped over the end of the pipe and fastened to the platform. Next erect the 1" pipe at the hub of the platform and the rest of the railing being screwed together as shown. After the stair is all erected would advise going over all the set screws on the hub of treads to make sure that each tread is securely fastened in its proper position. COPY FOR ARCHITECTS TO INSERT IN SPECIFICATIONS DUVINAGE PATENTED SPIRAL STAIRS— Furnish and erect where shown on plans Duvinage Spiral Stairs as manufactured by Pierre Duvinage, 253 Broadway, New York City, — diameter, — height, cast iron treads, center pipe 3" diameter for 42", 48", and 54", 4" diameter for 60", 66", and 72". 1" Pipe handrail on stairs and around well opening. PIERRE DUVINAGE, 253 Broadway, New York 3 DUVIN AGE SPIRAL STAIR, 54" diam., 12' 3 high, erected in office of Carson, Pirie Scott Co., 410 4th Avenue, New York City. Upper cut shows arrangement of winding railing on 16th floor; lower cut shows stair as seen on the 15th floor. Note the neat substantial con¬ struction, also small floor space required. PIERRE DUVINAGE, 253 Broadway, New York 4 DUVINAGE SPIRAL STAIRS have been installed as follows: Architect, Contractor or Owner Location Aetna Iron Works.Fifth Ave. Drug Store, Brooklyn, N. Y. R. B. Barnes.Dr. Raymond’s Residence, Washington Depot, Conn. A. T. Brook.Southern Cotton Oil Bldg., Bayonne, N. J. Carson Pirie Scott Co.Office 410 4th Ave., New York City City of New York.'.Sanitarium, Otisville, N. Y. H. S. Congers.Warehouse, Bermuda Consolidated Gas Co..Boiler Room of Gas House, Highbridge, N.Y. Dixon Building Co.Grant’s Store, Brooklyn, N. Y. Gust. Ericsson.Sterling Piano Co.’s Bldg., Brooklyn, N. Y. Wm. Flanagan.Store 367 Flatbush Ave., Brooklyn, N. Y. Wm. Flanagan.Office 450 Pearl St., New York City Foundation Co.Sewage Disposal Plant, Albany, N. Y. Foundation Co....Vacuum Oil Co.’s Bldg., Paulsboro, N. J. Friedman Iron Works..116th St. & Lex’ton Ave., New York City Howard Greenley.Sec’y’s Office of Archt. League, New York City W. E. Green & Co.Stable, Glen Cove, N. Y. John C. Greenleaf.Farm Bldgs., Water Tower, Lee, Mass. Grossman Bros. & Rosenbaum. .St. Anthony’s Gym., B’klyn, N. Y. Glenham Construction Co.Pump House, Glenham, N. Y. J. H. Grozier Co.... Whiting Mfg. Co.’s Factory, Hartford, Conn. D. S. Fless & Co.Office Bldg. 25 Broad St., New York City D. S. Hess & Co.Office Bldg. 3 E. 40th St., New York City D. Horsley.Moving Picture Studio, Bayonne, N. J. F. D. Hyde.Signal Sta. D. L. & W. R.R., Buffalo, N. Y. Jersey Construction Co.253 6th Ave. Store, New York City Jas. H. S. Jones.Wolff Shirt Store, Bridgeport, Conn. Katchen Iron Works.125th Street Theatre, New York City W. I. Lawson.Garage, Glen Cove, N. Y. Lehigh Valley Railroad Co....Pier 44 East River, New York City Meigs & Co .Store, Bridgeport, Conn. J. Monk & Sons.Pier 36 North River, New York City McICeever Bros.3 Stairs Fertilizer Plant, Tuckerton, N. J. Pierson & Goodrich.Residence 9 E. 67th St., New York City Portchester Baking Co. .Bakery, 3 Stories High, Portchester, N.Y. Ruggles-Robinson Co..U.S. Army Storage Bldg., Mill Rock, N. Y. Sterling Products Co.Factory, Easton, Pa. Robert Schnaier.Greek Church, 72nd St., New York City II. Wales Lines Co.Crane Factory, Bridgeport Conn. H. Wales Lines Co.Yale & Towne’s Factory, Stamford, Conn. PIERRE DUVINAGE, 253 Broadway, New York 5 SPIRAL STAIRS in Power House Vacuum Oil Co., Pauisboro, N. J. Foundation Co. of N. Y., General Contractors PIERRE DUVINAGE, 253 Broadway, New York 6 STAIR DETAILS. 7 HIGH CLASS ORNAMENTAL RAILINGS Railing for residence at Lake George. Mr. Frank C. Farley, Architect, New York City. PIERRE DUV1NAGE, 253 Broadway, New York 8 ANCHORING OF BUILDINGS T HE prominent advantages of DUVINAGE’S system of POST CAPS and WALL PLATES for SELF RE¬ LEASING BEAMS, tying the outer walls of Brick Buildings and Framed Structures are: that in case of burning through the floor, the BEAMS RELEASE THEMSELVES, from their fastenings at either end, and fall in leaving the WALLS STANDING, and thereby confining the heat within, and tending to prevent the fire from spreading to adjoining buildings. This feature recommends itself to every Owner of Prop¬ erty, and especially to Architects, Builders, Engineers, and Fire Insurance Companies. INSURANCE COMPANIES SHOW THEIR AP¬ PROVAL, BY ALLOWING REDUCED RATES ON BUILD¬ INGS IN WHICH THE DCVIJiAGE SYSTEM IS EM¬ PLOYED It COSTS NOTABLY LESS than any other style of construction. PIERRE DUVIMAGE uses a WALL PLATE of cast iron of PROPER THICKNESS, and for the sides and top of the beams, uses the SAME MATERIAL as that of the wall. Instead of making a groove across the timber, by two saw-cuts, and then gouging out the intervening wood to admit a rib on the plate, as is the practice of others, PIERRE DCVINAGE uses in his approved system, one or more PROJECTING HUBS, which engage in holes of corresponding size bored into the beams, thus preventing the shearing off of the anchoring part of the beam end. THEREFORE, in fitting beams to the DUVINAGE Wall Plates, Post Caps, Pier Caps, Brackets, Sill Plates and Roof Truss Castings, ONE TOOL ONLY need be used or carried about, i. e., an AUGER-BIT OF PROPER SIZE AND BORE, which, with about a half a dozen turns will give the requisite depth of the hole needed. A MAN CAN BORE A DOZEN HOLES IN THE SAME TIME THAT HE CAN MAKE A GROOVE. PIERRE DUVINAGE, 253 Broadway, New York PRICE LIST OF DUVINAGE POST CAPS. Size of Post Roof %" i" i y*" 1%" 6 inch squares, $1.20 $1.70 8 “ 2.45 5.00 9 “ 2.75 5.70 $8.20 10 “ “ 3.20 6.10 8.35 $9.20 11 “ “ 3.40 $6.70 9.00 10.00 12 “ “ 3.60 8.35 9.25 10.85 13 “ 9.20 10.00 11.70 14 “ 10.00 11.70 13.35 15 “ 12.10 13.75 15.45 16 “ “ 13.35 15.45 17.10 17 “ 14.60 18.35 19.60 18 “ “ 15.20 20.00 20.70 PIERRE DUVINAGE makes Bifurcated, Triple, Quad ruple Caps, Etc., calculated for loads from 75 lbs. to 500 lbs. per square foot and length of span. PRICES ON APPLICATION. DUVINAGE POST CAPS. FOR SELF-RELEASING BEAMS. QUADRUPLE © r. © © o © crrr Z - © O ;n;r> © O U G TRIPLE © © _ © © o © o o 0 PIERRE DUVINAGE, 253 Broadway, New York 10 THIS METHOD AS EVERY ONE CAN PLAINLY SEE, NOT ONLY MAKES AN IMMENSE GAIN IN STRENGTH, BUT ALSO A LARGE SAVING IN CAR¬ PENTER’S LABOR. A DUVINAGE Wall plate is an Anchor and Bearing Block combined, and requires no Blue Stone or Granite in the wall. PIERRE DUVINAGE is prepared to supply castings for any size of Post, Pier, Girder, Bracket, Sill Plate or Roof Truss, either from regular patterns on hand or from designs furnished by the Architect. PRICE LIST OF DUVINAGE SINGLE ANCHOR WALL PLATES. 9 in. deep 13 in. deep Beams 4 in. wide, east iron. .45 “ 5 “ “ “ 60 “ 6 “ “ “ 95 “ 8 “ “ “ 1.10 and 1.25 “ 9 “ “ “ 1.25 “ 1.50 “ 10 “ “ “ 1.45 “ 1.95 “ 12 “ “ “ 1.95 “ 2.25 “ 14 “ “ “ 2.20 “ 2.75 “ 16 “ “ “ 2.50 “ 3.35 “ 18 “ “ “ 2.85 “ 3.60 PIERRE DUVINAQE also makes Double Anchor Plates for party or fire-walls. PIERRE DUVINAGE, 253 Broadway, New York 11 DUVINAGE CAST IRON BASE PLATES r777y/MV/fy///W7777T* PRICE LIST. Size of Plate Post Weight Price 12 in. x 12 in. x 1 in. 6 in. sq. 40 $ 2.00 16 “ x 16 “ x m “ 8 “ “ 85 4.25 18 “ x 18 “ x I'A “ 9 “ “ 125 6.25 20 “ x 20 “ x i / 2 u 10 “ “ 160 8.00 24 “ x 24 “ x 1/2 u 12 “ “ 225 11.25 30 “ x 30 “ x m “ 14 “ “ 410 20.50 36 “ x 36 “ x 2 it 16 “ “ 675 33.75 I AM FURNISHING Special Castings, Lally or Concrete Filled Columns, Rolling Steel Shutters, Stable Fixtures, Reinforcing Concrete Bars, Special Wrought Iron Hinges. PIERRE DUVINAGE, 253 Broadway, New York 12 ANCHOR PLATE FOR SELF-RELEASTNG GIRDER. 18 Roof Truss Castings. RODS, BOLTS AND WASHERS FOR ANY PITCH R EQU I RED. Especially Adapted for Frame Structures, such as Country Houses, Hotels, Churches, Warehouses, R. R. Depots, Car=Houses, Garages, Stables, Etc. THEY ARE NEATLY AND STRONGLY FRAMED. THE ENDS OF THE TIMBERS ARE CUT SQUARE AND NOT WEAKENED BY MORTISES. :: :: THIS IMPROVEMENT SAVES MUCH CARPENTER'S LABOR AND CONSEQUENT COST. If Architects or others will send drawings of what they want, with dimensions marked in , estimates will be furnished for any size of Truss Castings, Rods, Rolts and Washers ; and any other information regarding these specialties will be given. Contractors, Carpenters, Masons or others, may or¬ der the required Castings, Rods, Bolts, and Washers from us direct. PIERRE DUVINAGE, 253 Broadway, New York 14 ROOF TRUSSES Combination wood, cast iron fittings, steel rods and pins. Steel trusses for power plant, halls and other buildings requiring clear floor space. PIERRE DUVINAGE, 253 Broadway, New York 16 CAMBERED GIRDERS. WASHER. WASHER. M CAST 'R0N\" DUVINACE ^^=====55^ STRUT! WALL PLATE \ / ^ DUVINAGE^ POST CAP Wood girders of long span and heavily loaded strengthened by iron or steel as shown above. In Fig. 2 let W represent the load concentrated at D. The stress in the member DC is equal to W. The stress in the other members may be found by applying the formulas. Stress DC = + W AC W Stress AC or BC =-X — DC 2 AD W Stress AB =r + -X •—■ DC 2 The + and — signs in the formulas indicate compression and tension respectively, and in Fig. 2 and 4 the solid lines rep¬ resent compression and the dotted lines tension. In designing let W = % the entire load on the girder, and in above if the load is 2,000 lbs. per running foot then 18 ft. 0 ins. X 2,000 = 36,000 lbs. entire load; % of 36,000 = 22,500 lhs. the load W acting on the beam over the strut DC. The tension in the rod AC is equal to the length AC -4- DC multiplied by one-half of W or substituting the given dimensions 9 ft. 4 ins. -4- 2 ft. 6 ins. = 3.73 X (% of 22,500) = 41,963 lbs. the tensile stress in rod AC, and taking the ultimate tensile strength of wrought iron at 50,000 lbs. per sq. in. using a factor of safety of 4, we have 50,000 -4- 4 = 12,500 lbs. per sq. in., then taking the tensile stress in rod AC 41,963 lbs. -4- 12,500 — 3.35 sq. in. The area of a 2% in. round rod is 3.54, the nearest standard size having the required sectional area. As the area at the bottom of the thread is less than area required, it is necessary to upset the threaded portion of the rod and the standard upset for 2% in. is ins lpj ie was ] iers at A & B are usually made the full width of the girder and % to 1 in. in thickness. PIERRE DUVINAGE, 253 Broadway, New York 16 CAMBERED GIRDERS In Fig. 4 the calculations for the stresses in the various members are similar to those given for the trussed beam with one support, and may be expressed in formulas: . Stress BHorCE= + W AH “ AH or DE = — --- X W BH AB “ HE =-- X W BH AB “AD = -1-X W BH In practice W — 11/30 of entire load, and in above, if the load is 2,000 lbs. per running foot, then 18 ft. 0 ins. X 2,000 = 36,000 lbs. entire load; 11/30 of 36,000 = 13,200 lbs. the load W acting on the beam over the strut BH and CE and applying the above formula, we have 6 5/12 Stress AH = - X 13,200 = 33,924, 2.5 the stress in rod AH and 33,924 -f- 12,500 = 2.713 sq. in., area of rod. The area of 1% in. rod is 2.76 sq. in., the nearest standard size having the required area, and the threaded portion should be upset to 2% inches. Cambered girders are made with one rod in center of wood beams or with 2 rods on outside of beam as may be required. PIERRE DUVINAGE IS PREPARED TO SUPPLY THE RODS, WASHERS, DUVINAGE CAST IRON STRUTS, WALL PLATES AND POST CAPS FOR ANY SIZES REOUIRED AT REASONABLE PRICES FOR THE BEST MATERIALS AND PROMPT DELIVERIES. CORRESPONDENCE ON THE SUBJECT INVITED. PIERRE DUVINAGE, 253 Broadway, New York 17 Hook Anchors, Side Anchors, Straps, Ashlars, Girder Straps and Wall Plate Anchors. PRICE LIST. HOOK OR WALL ANCHOR. Size of Iron Inches 1 H in. in. in. in. in. in. in. in. in. in. 12 14 16 18 20 24 30 36 48 60 .32 .35 . 38 .40 .42 .47 .54 .61 .85 1.00 Size of Iron Inches 13 4 *% Size of Iron Inches 1V2*% Size of Iron Inches 2 M x % 3x% SIDE ANCHOR. in. in. in. in. in. in. in. in. in. in. 12 14 16 18 20 24 30 36 48 60 .29 .31 .35 .37 .39 .44 .51 .58 .72 .86 .40 36 .47 in. m. 30 36 1.11 1.26 1.68 1.92 2.10 2.40 24 in. 30 in. 36 in. 48 in .60 .70 .75 .90 .75 .90 1.05 1.25 10 in. 12 in. 14 in. .05 .06 .07 .08 .09 .12 A6HLARS. (For Galvanized Ashlars—Add 50 %, to above price.) PIERRE DU VIIV AGE, 253 Broadway, New Vor4 18 TIMBER HANGERS (Single.) To avoid mistakes, please give sizes in the order shown on Cut. Cut shows 6x12x4 TIMBER HANGER, made of 3 x } Iron Any size not on list made to order. Prices subject to change with, out notice. Discount . Terms Net Cash. SIZE OF HANGER Size 2x% OF Iron 2^x% Size ~/'2 X / / 2 OF 3x% Iron 3x 8x3. .60 .75 3x 9x3. .60 .75 3x10x3. .60 .80 3x12x3. .67 .90 .83 4x 8x3. .60 78 .74 4x 8x4. .60 .78 .74 4x 9x4. .62 .80 .77 1.00 4x10x2. .65 .82 .80 4x10x4. .65 .82 .80 1.08 4x12x2. .72 .95 .90 4x12x4.. .. .72 .95 .90 1.20 .80 1.05 1.00 4x14x4. .80 1.05 1.00 1.30 6x 8x3. .70 .92 .86 6x 8x4. .70 .92 .86 .70 .92 .86 1 20 .72 .95 .90 1.20 .72 .95 .90 1.20 75 1 00 .94 6x10x4. .75 1.00 .94 1.25 1.55 1.90 6x10x6. .75 1.00 .94 1 25 1.55 1.90 .82 1.10 1.03 6x12x3. .82 1.10 1.03 1.37 1.65 2.05 6x12x4. .82 1.10 1.03 1.37 1.65 2.05 6x12x6. .82 1.10 1.03 1.37 1.65 2.05 HQ 1.20 1.12 6x14x4. .89 1.20 1.12 1.50 1.80 2.25 6x14x6. 1.20 1.12 1.50 1.80 2.25 8x10x4. 1.10 1.03 1.43 1.65 2.15 8x10x6. 1.10 1.03 1.43 1.65 2.15 8x10x8. 1.10 1.03 1.43 1.65 2.15 1.55 1.85 2.30 1.55 1.85 2.30 1.55 1.85 2.30 1 65 2.00 2.45 8x14x6. 1.65 2.00 2.45 8x14x8. 1.65 2.00 2.45 PIERRE mrVIjVAGE, 353 Broadway, New York 19 Large stock on hand ready for instant shipment. PRICE LIST No. of Hanger. APPLIED TO JOISTS. Price Each. 12 - 2 x 6 2 X. 8 2 x 10 2 X 12 . .S 30 12£ — 2 2 l x 8 2.' lx 10 2Jx 12., . 35 13 — 3 x 6 3 X 8 3 x lo 3 X 12. . 40 14 — 4 x 6 4 X 8 4 x 10 4 X 12. . 60 102 - 2 x 12 2 X 14 2 x 10. . 45 102 J- 2ix 12 2 lx 14 2 lx 16.. . 50 103 — 3 x 12 3 X 14 3 x 16.. . 60 104 — 4 x 12 4 X 14 4 x 16.. . 85 105 — 5 x 10 5 X 12 5 x 14 5 X 16 . 106 — 6 x 10 6 X 12 G x 14 6 X 16 . .1 10 107 - 7 x 10 7 X 12 7 x 14 7 X 16. . 1 30 108 - 8 x 10 8 X 12 8 x 14 8 X 16. .1 50 109 - 9 x 12 9 X 14 9 x 16 9 X 18. 110 - 10 x 12 10 X 14 10 x 16 10 X 18. .2 00 112 - 12 x 14 12 X 16 12 x 18 12 X 20. .2 80 114 - 14 x 16 14 X 18 14 x 20. .3 30 116 - 16 x 18 16 X 20 16 x 22., .5 00 PIERE DUVINAGE, 253 Broadway, New York 20 Burnished and Varnished. GOETZ BOX ANCHORS. MADE OF CAST IRON. PRICE LIST. Size of Girder Size of Bot¬ tom Plate Bearing on Wall Price Each Cover, Extra 6x10 $1.90 15 6x12 6 x 12 6 2.10 • 15 6x14 2.30 15 8x 10 2.20 20 8x12 2.40 20 8x 14 fix 14 6 2.65 20 8x16 2.90 20 10 x 12 3.55 25 10 x 14 3.90 25 10 x 16 7x 18 7 4.25 25 10x18 4.60 25 12 x 12 4.30 32 12x14 4.70 32 12 x 16 8 x 20 8 5.10 32 12x18 5.50 32 14x14 5.45 40 14 x 16 5.90 40 14 x 18 0x22 9 6.35 40 14x20 6.80 40 16 x 16 6.75 50 16x18 10 x 24 10 7.25 50 16x20 7.75 50 18 x 18 10 x26 10 9.40 65 18x20 10.00 65 PIERRE DUVINAGE, 253 Broadway, New York 21 FIRE ESCAPES Built according to latest State and City laws. PEEKSKILL MILITARY ACADEMY, Peekskill, N. Y. PIERRE DUVINAGE, 253 Broadway, New York 22 CAST IRON COLUMNS and BASES. id £ © o O o :o Q O 0 o ga □ Designed and cast to meet all requirements. Tables of safe loads for round and square columns, see pages 26 and 27. PIERRE DUVINAGE, 253 Broadway, New York 23 SAFE LOADS UNIFORMLY DISTRIBUTED FOR STEEL “I” BEAMS. (In tons of 2000 lbs.) 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