MILLWRIGHT JOB DESCRIPTIONSetting of all classes of engines, pumps, fans, furnaces, motors, dynamos, generators, air compressors, putting all pulleys, sheaves, and flywheels on same; making and setting of all templates for all machinery requiring foundations and bolts, including actuators, limit switch devices etc. legs, supports or other necessary ancillary structures.
Installation of agitators, airveyors, aprons, blast furnaces, brackets, cableways, caissons, chutes, clips, concentrators, conveyors, coolers, cranes (the erection, installation, handling, operating, and maintenance of all forms of construction work), crushers, curtains, derricks, docks, dredges, drums, dumb waiter enclosures, Electrified Conveyors, escalators, expanded metal, fans, fencing, frames, gates, grating, grillage and foundation work, grill work, guards, hangers, hoppers, hot rooms, inclines, iron doors, kilns, lockers, locks, louvers, machinery (moving, hoisting, lowering, and placing on foundations), marquees, material handling systems of whatever type, material altered in field such as: framing, cutting bending, drilling, burning, and welding by acetylene gas and electric machines, metal curtain wall, monorails, multi-plate operating devices, ovens, pans, pile drivers, plates, porcelain, pulverizers, racks.
Robots, storage racks which form part of the building structure, railings, smoke conveyors, spillways, stacks, stage equipment and counterweight systems and rigging for asbestos curtain, stokers, stoves, tanks, tool rails, tracks, travelers, traveling sheaves, vault doors, ventilators, vertical hydraulic elevators and vessels.
Stone crushing and gravel washing plants, crushers, screens, revolving or eccentric; rolls, pan conveyors, and ship hoists, conveyors, belt screw or gravity, whether boxes be steel, iron, wood, the assembling of all travelers and cranes for handling machinery or its products.
Framing and setting of all bridge trees, either wood or steel, where they are not part of the building or structures; all foundations, beams or timbers used for the reception of machinery; legs and all supports for machinery, carriers and chutes; and all hopper bottoms, drilling all necessary holes for same, whether foundations be wood or steel, stone, concrete, or other materials, and all holes for beaming and machinery to be drilled by Millwrights in wood, steel, or other materials, whether ratchet or power drills be used.
All grain handling appliances, cleaners, clippers, needle machines, car pullers, grain shovels, the manufacture and erection of all wood legs, spouts and conveyor boxes (whether schedule or other pipe), and the erection of all steel or cast iron legs, heads, or boots, and conveyor boxes, framing and erection of all marine legs and ship shovels, framing of all scale timbers and hood hoppers and garners. Setting of all automatic, all boat tanks or receiving hoppers and devices used for elevator legs, when not of electrical appliances; all dust collectors and necessary sprouting of same; clagging all pulleys and bleaching devices of all kinds. All bin valves, turnheads and indicators, all necessary shafting and bearings and supports all drives, rope, belt, chain, or rawhide; all splicing and gluing of same; all pulleys, cable, sprockets and gearing, cutting all key seats in new or old work done in the field. All escalator stairs, amusement devices of all kinds inclusive of gaming machines; framing and erection of all derricks and pile drivers; all bridge machinery, all fans and pumps, either steam or centrifugal; all dryers and necessary appliances for same; all barrel and package devices, either elevating or conveying; all presses, hydraulic or other powers; filing all gears done in the field, all concrete mixers, and other temporary appliances used in the construction of buildings.
All direct and connected machines or any power, hog hoists, and meat handling appliances of all kinds, installing machinery in all classes of plants or mills; flour, cereal, spice, cotton, wool, twine, paper, steel, meat processing and packing, killing and slaughter houses, saw, cement, planing, power and paint mills, machine and woodworking shops or factories, jewellery, and power houses, sugar and oil refineries, starch houses, shoe factories, printing establishments, pulp and paper mills, plywood plants, automobile plants, ore crushers and smelters, mining and smelting industry, melting pots for all types of ore and mineral, fish processing and packing plants, and dairies.
All ice plants and equipment, glue and ice cream factories where shafting and machinery are used manufacturing or transmitting power.
All coal handling machinery and drivers, crushers, conveyor drags,
whether the frames be steel or wood, with all necessary framing and
drilling, making all wood boxes and guides, all patent stokers and
automatic feeding devices, ash handling machinery, either elevating or
conveying, including all monorails and overhead chain conveyors.
The handling and operating of all acetylene and electrical devices for heating, welding, and cutting, when used in connections with Millwright work, cutting and threading of all bolts, also all burning and welding.
All Contractors, and sub-Contractors on all jobs must see that Millwrights will do the work as is outlines herein, which shall include the unloading, hoisting, dismantling, skidding, processing, cleaning, erecting, assembling, lining, and adjusting in connection with any work that is being performed.
This shall include work on all cranes, atomic reactors, automated machinery, rocket and guided missile sites and projects, automatic bowling pin setters, radar stations, power and gravity conveyors of all types, and turbines, this shall also apply to all other work that is not included herein, but still requires the skill of the Millwright.
The fabrication and installation of all bases for the above machinery and equipment.
Finally all work pertaining to machinery used for manufacturing purposes or amusement devices.
!THEN WE GO FOR OUR MORNING BREAK!
Places we WORK.All types of manufacturing firms
.Automotive and Truck plants
.Mining, Refining and other natural resource users
.Ships, Shipyards and Barges
.Repair & Maintenance of all manner of machines and equipment
.Power Generating Facilities of all types
.Lift Bridges and other Canal or Dock equipment
EQUIPMENT we USEHAND TOOLS we USECRANE HAND SIGNALS
Table of Rope Strengths
Rope Strength*
Dia. | Polypropylene | Nylon | Manila
-------|-----------------|----------------|----------------
| Load weight | Load Weight | Load Weight
-------|-----------------|----------------|----------------
3/16 | 150 0.7 | 200 1.0 | 100 1.5
1/4 | 250 1.2 | 300 1.5 | 120 2.0
5/16 | 400 1.8 | 500 2.5 | 200 2.9
3/8 | 500 2.8 | 700 3.5 | 270 4.1
1/2 | 830 4.7 | 1250 6.5 | 530 7.5
5/8 | 1300 7.5 | 2000 10.5 | 880 13.3
3/4 | 1700 10.7 | 2800 14.5 | 1080 16.7
7/8 | 2200 15.0 | 3800 20.0 | 1540 22.4
1 | 2900 18.0 | 4800 26.4 | 1800 27.0
1-1/8 | 3750 23.8 | 6300 34.0 | 2400 36.0
1-1/4 | 4200 27.0 | 7200 40.0 | 2700 41.6
1-1/2 | 5940 38.4 | 10600 55.0 | 3340 60.0
2 | 10400 69.0 | 18400 95.0 | 5600 108.0
3 | 22800 153.0 | 40000 210.0 | -- -
4 | 38000 276.0 | 72000 380.0 | -- -
*These figures use a Safty Factor of 5
Steel plate WeightsSteel Plate Weights Thickness Weight | Thickness Weight Inches Lbs/sq.ft | Inches Lbs/sq.ft | 3/16.................7.65 | 2-1/8...............86.70 1/4.................10.20 | 2-1/4...............91.80 5/16................12.75 | 2-1/2..............102.00 3/8.................15.30 | 2-3/4..............112.20 7/16................17.85 | 3..................122.40 1/2.................20.40 | 3-1/4..............132.60 9/16................22.95 | 3-1/2..............142.80 5/8.................25.50 | 3-3/4..............153.00 11/16...............28.05 | 4..................163.20 3/4.................30.60 | 4-1/4..............173.40 13/16...............33.15 | 4-1/2..............183.60 7/8.................35.70 | 5..................204.00 1...................40.80 | 5-1/2..............224.40 1-1/8...............45.90 | 6..................244.80 1-1/4...............51.00 | 6-1/2..............265.20 1-3/8...............56.10 | 7..................285.60 1-1/2...............61.20 | 7-1/2..............306.00 1-5/8...............66.30 | 8..................326.40 1-3/4...............71.40 | 9..................367.20 1-7/8...............76.50 | 10.................408.00 2...................81.60 | --------------------------------------------------------- "Rule of Thumb" 1 cu. ft. of Steel weighs 500 pounds.
Wire Rope Strength
Wire Rope (6 strand x 19 wire)
Dia.| Weight | Safe Load| Break Pt.|
Ins.| lb./ft. | lbs. | lbs. |
------|---------|----------|----------|
1/4| 0.10 | 675 | 4800 |
5/16| 0.16 | 1000 | 7400 |
3/8| 0.23 | 1500 | 10600 |
7/16| 0.31 | 2000 | 14400 |
1/2| 0.40 | 2400 | 18700 |
9/16| 0.51 | 3300 | 23600 |
5/8| 0.63 | 4000 | 29000 |
3/4| 0.90 | 6000 | 41400 |
7/8| 1.23 | 8000 | 56000 |
1| 1.60 | 10000 | 72800 |
1-1/8| 2.03 | 13000 | 91400 |
1-1/4| 2.50 | 16000 | 112400 |
1-3/8| 3.03 | 19000 | 135000 |
1-1/2| 3.60 | 22000 | 160000 |
1-3/4| 4.90 | 30500 | 216000 |
2| 6.40 | 40000 | 278000 |
2-1/2| 10.00 | 60000 | 424000 |
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Table of Steel Chain Strength
Steel Chain Strength
Dia.| Weight | Safe Load| Break Pt.|
Ins.| lb./ft. | lbs. | lbs. |
------|---------|----------|----------|
1/4| 0.75 | 1200 | 5000 |
5/16| 1.00 | 1700 | 7000 |
3/8| 1.50 | 2500 | 10000 |
7/16| 2.00 | 3500 | 14000 |
1/2| 2.50 | 4500 | 18000 |
9/16| 3.25 | 5500 | 22000 |
5/8| 4.00 | 6700 | 27000 |
11/16| 5.00 | 8100 | 32500 |
3/4| 6.25 | 10000 | 40000 |
7/8| 8.00 | 12000 | 48000 |
1| 10.00 | 15200 | 61000 |
1-1/8| 13.00 | 19500 | 78000 |
1-1/4| 16.00 | 23700 | 95000 |
1-3/8| 19.00 | 28500 | 114000 |
1-1/2| 23.00 | 33500 | 134000 |
1-3/4| 31.00 | 41500 | 166000 |
2| 40.00 | 54000 | 216000 |
2-1/2| 65.00 | 84200 | 337000 |
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