Hydraulics. This category of service includes preparation of hydraulic reports for bridges and culverts, design of storm drains, drainage and irrigation facilities, bridge scour evaluations, and evaluation of flood potential and hazards. The consultant shall follow the procedures outlined in the ITD Design Manual and as directed by the Hydraulics Engineer.
Hydraulics. 6.1 Potable water supply
Hydraulics. The Iso-cylinders and valves in the appendix are to be used.
Hydraulics vertical, universal. Set-up, operation and maintenance, cutters, attachments workholding, speeds and feeds,coolants. angles, pockets. Slots, keyways, cams. Arc, set-up, operation, and maintenance of equipment. Cutting, weld preparation and fitting, welding and up worn surfaces. Hard facing and heat treatment. Installation, adjustment, removal of seals, couplings, clutches, keys, drivers, (belts, chains, gears) levers, screws and springs. Installation, testing and repair or rebuild pumps, accumulators, control valves, piping, hose filters, reservoirs, cylinders, motors, actuators, boosters, heat exchangers. Gauges. Hydraulic fluids, and seals. Safety controls and interlocks, care and use of pipe threading and bending machines. Installation,testing and repair or rebuild compressors, receivers, filters, piping, hose, and blowers, controls, valves, motors and actuators, cylinders, fittings, gauges. circuits and interlocks. Remote controls and operated systems. LUBRICATION Identitication and applicationof lubricants: oils, greases, etc. Preventative maintenance procedures. MACHINE Foundation-layout, location, and anchorage. INSTALLATION Rigging methods hoists, slings, ropes, attachments, jacks, rollers and scaffolds. Machine leveling and alignment. Grouting. Runoffcheck. adjusting and testing machine installations and associated services. MATERIALS HANDLING EQUIPMENT Conveyors belt, chain and installation and maintenance. Bridge and gib cranes: use, operation, inspection and maintenance. Maintenance of and power operated trucks. TOTAL TIME: SAFETY RELATED INSTRUCTION BENCHWORK W DRILLING GRINDING APPENDIX SCHEDULE OF WORK PROCESSES AND RELATED FOR TOOL DIE MAKER Knowledge of safe practices; and removal Fitting and assembling, use of hand tools: hammers, chisels, saws, files, scrapers, drills, taps and dies, reamers, broaches, presses, riveting. Layout methods and accessories used. Tool maintenance sharpening methods for various cutting tools. Tool care and storage of tools requisitioning. Uses, types, and operation of presses: Drilling, counter sinking, reaming and tapping. Types of grinding machines and wheels, dressing, grinding wheels. portable and surface grinding. grinding, and tool cutter LATHES TRACING
Hydraulics. 1. Existing conditions cross-section for Fish Creek will be used from the existing conditions HEC-RAS (v4.1) hydraulic model from the City of Arlington’s Fish Creek Watershed study. This scope includes one iteration of existing conditions using the steady model.
Hydraulics. Electro-hydraulic pumping sets shall be soundproofed. All circuits shall be designed with permanent total filtration equivalent to Class 7 of the US NAS standard. The oil tanks on the circuits shall be fitted with a vent including an air filter rated for absolute filtration to 3 micrometres, and an air dryer for absorbing 40 litres of water per 24 hours from the air drawn in by the main tank. The pressure in hydraulic circuits which are highly loaded or participate in handling operations shall never be higher than 250 bars.
Hydraulics. Consultant shall generally analyze and review the lift station hydraulics. The flow rates shall be documented in connection with EVMWD staff and the results of the 2016 Sewer Master Plan. System head losses and energy efficiencies should be evaluated.
Hydraulics. The A-E shall discuss and summarize the results of the Hydraulic/Scour and Sediment Transportation Report and its impact to the bridge over San Xxxx Creek;
Hydraulics. The peak design flow shall be determined as recommended in the latest revision of the DOE’s Criteria for Sewage Works Design (Orange Book). This analysis shall be compared with the most recent planning information available from District. The lift station capacity shall be the peak hour flow rate with its largest pump offline (firm capacity, as defined by the DOE). Pump selection and force main size shall ensure a minimum velocity of 3 feet per second in the force main. Force main velocities shall not exceed 8 feet per second. Hydraulic and pump design shall conform to the Orange Book and the latest revision of the Hydraulic Institute Standards. The Developer shall submit a lift station and force main pressure surge analysis (water hammer) to the District as recommended in the Orange Book in a format acceptable to the District. The analysis shall incorporate calculations for minimum and maximum pressures in the system for the anticipated worst case scenario, including pump starts and sudden power outage shutdowns. Surge protection shall be installed as required by the surge analysis and approved by the District. If required, surge protection could include devices such as: pump control valves, variable frequency drives, use of high strength piping, and vacuum relief valves (swing check type). Critical surge protection devices shall protect the system under all operation conditions, including a power outage shutdown while the station is operating at its highest allowed capacity. Hydro pneumatic tanks shall not be used for surge control. If vacuum relief valves are used, a total number of two valves shall be installed in a vault for redundancy and maintenance purposes. Vaults shall be drained to the nearest gravity sewer, side sewer lateral, unless the District determines another means is acceptable. Vault floors shall be sloped to the drain. Vaults shall meet all requirements of this Division 4 and those applicable from Divisions 2 and 3. All hydraulic calculations, including the pressure surge analysis, shall be signed and stamped by a Professional Engineer licensed in the State of Washington and shall be provided to the District in a station design report.
Hydraulics. 3.1 The Consultant shall prepare a hydraulic flood analysis for the existing and proposed stream crossing. The analysis will contain data required by State and Federal agencies, including a risk assessment and a scour analysis. The hydraulic analysis will be based on steady, gradually varied peak flow conditions for all flood frequency events analyzed.
