tailieunhanh - hydraulic power systems for civil works structures 2886

Simple machines, such as the club and oar (examples of the lever), are prehistoric. More complex engines using human power, animal power, water power, wind power and even steam power date back to antiquity. Human power was focused by the use of simple engines, such as the capstan, windlass or treadmill, and with ropes, pulleys, and block and tackle arrangements; this power was transmitted usually with the forces multiplied and the speed reduced. These were used in cranes and aboard ships in Ancient Greece, as well as in mines, water pumps and siege engines in Ancient Rome. The writers of. | USACE NAVFAC AFCESA NASA UFGS-41 24 10 January 2008 Preparing Activity USACE CW Superseding UfGs-41 24 10 April 2006 UNIFIED FACILITIES GUIDE SPECIFICATIONS References are in agreement with UMRL dated March 2008 SECTION TABLE OF CONTENTS DIVISION 41 - MATERIAL PROCESSING AND HANDLING EQUIPMENT SECTION 41 24 10 HYDRAULIC POWER SYSTEMS FOR CIVIL WORKS STRUCTURES 01 08 PART 1 GENERAL PRODUCTS INSTALLED BUT NOT SUPPLIED LUMP SUM PRICES Payment Unit of Measure REFERENCES SYSTEM DESCRIPTION DESIGN AND PERFORMANCE REQUIREMENTS Design Parameters Allowable Stresses Structural Items Hydraulic Cylinders Stress Concentration Factors Connections Pinned Connections Shop Connections Welded Connections Structural Bolted Connections SUBMITTALS SCHEMATIC AND DRAWINGS Shop Drawings Fabrication Drawings Shop Assembly Drawings Hydraulic Schematic Delivery Drawings Field Installation Procedures DELIVERY STORAGE AND HANDLING Packaging Shipping Preservation and Storage WARRANTY OPERATION AND MAINTENANCE PART 2 PRODUCTS MATERIALS AND MECHANICAL EQUIPMENT SECTION 41 24 10 Page 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 . General . Standard Products . Hydraulic Cylinders Standard Design Cylinder Tubes Cylinder Heads and Caps Pistons Piston Rods Standard Design . Hydraulic Cylinders Custom Design . Hydraulic Cylinders Corps Design Piston Rods Corps Design Pistons Piston Wear Rings O-Ring Seals Rod Wiper Piston and Piston Rod Seals Rod Seal Gland and Locking Device Flange Hoist Locking Device . Hydraulic Power Unit . Oil Reservoirs Reservoir Heater Magnetic Separators Air Breather . Pumps . Accumulators . Filters . Gauges Pressure .