TERMS.pdf

GEOTECH TERMS Degree of saturation: It is the ratio of the volume of water occupied in the soil to the volume of voids of the given soil sample. Cohesion: it is the force that holds together molecules or like particles within a substance Decreases: if the groundwater table in a soil formation ris...

GEOTECH TERMS Degree of saturation: It is the ratio of the volume of water occupied in the soil to the volume of voids of the given soil sample. Cohesion: it is the force that holds together molecules or like particles within a substance Decreases: if the groundwater table in a soil formation rises because of flooding the bearing capacity of the oil ____. Permeability: It is defined as the rate of water flow through the soil in a given period of time. 0: In AASHTO Soil Classification System, if the Group Index (GI) Yields a negative value, it should be taken as ___. Shrinkage Limit: Water content where further loss of moisture will not result in any more volume reaction. MSTE TERMS Miles: What is the second "M" in HMVM in accident rates? Crosswalks are defined by a pair of solid white lines across the road surface not less than 4 meters and not more than 8 meters apart. Flow: Equivalent hourly rate at which vehicles pass a point on a highway during a period less than 1 hour. Occupational Safety: Deals with understanding the causes of accidents at work and ways to prevent unsafe act and unsafe conditions in any workplace. Octagon: What shape is reserved exclusively for the Stop sign? The equilateral triangle, with one point vertically downward is reserved for the give-way sign. The equilateral triangle, with one point vertically upward is reserved for the warning sign. Circle: What shape is mainly used for regulatory signs? The rectangle, usually with long axis horizontal is used for directional signs, service signs, road work signs, signs for special purposes, and supplementary plates for warning signs. The rectangle, usually with long axis vertical is generally used for facility information signs, instruction signs, guide signs, and destinations of point of interest. Pentagon, point up What shape is used only for the pedestrian and school crossing sign? The Loading and Unloading Bay Lane Line is an unbroken white line 150 mm wide with a gap of 100 mm used to indicate the proper location of loading and unloading zone of public utility vehicles preferably with parking Toolbox meeting: Refers to daily meeting among workers and their respective supervisors for the purpose of instruction, discussion and proper briefing on the planned work, the assessment of past work, the possibility or actual occurrence of accidents at the site, tips, and suggestions on how to prevent possible accidents and other related matters. Mistakes: Inaccuracies in measurement which occur because some aspect of a surveying operation is performed by the surveyor with carelessness, inattention, poor judgement, and improper execution. Delineation is generally provided using the following devices: All of the above i. Pavement Markings ii. Signs iii. Guideposts iv. Reflective delineators v. Lighting vi. Curb or other physical devices 2000 vph: According to the DPWH Highway Safety Design Standards, what is the ideal capacity of a road? Warn or advise of temporary hazardous conditions that could endanger road users or the men and What are the types of pavement lines and markings? Longitudinal lines, Transverse lines, other lines, other markings 15. Which of the following are factors to be considered when choosing a design speed? All of the Above i. Function of the road ii. Anticipated operating speed iii. Anticipated speed limit iv. Economics The capacity of a route can be affected by which of the following factors? All of the Above i. Number of lanes ii. Lane and shoulder width iii. Terrain and road gradient iv. Traffic composition v. Side friction vi. Intersection capacity The provision of safety sight distance depends on the characteristics of the following: i, ii, and iv i. Driver ii. Vehicle iii. Roadway iv. Environment v. Pedestrians What are the components of stopping sight distance? Reaction distance and Braking distance Regulatory Signs: Signs that inform road users of traffic laws and regulations which, if disregarded, will constitute an offense. Special Instruction Signs: signs that instruct road users to meet certain traffic rule requirements or road condition. Warning Signs: warn road users of condition on or adjacent to the road that may be unexpected or hazardous. Guide Signs: Inform and advise road users of directions, distances, routes, the location of services for road users, and points of interest. Roadwork Signs: warn or advise of temporary hazardous conditions that could endanger road users or the men and equipment engaged on roadwork. Overhead Signs: signs which provide means of displaying essential traffic information on wide multi-lane roads, where some degree of lane use control is required, or where side-of-road clearance is insufficient to accommodate a road side sign. Barriers: highway appurtenances designed to prevent vehicular penetration from the travel way to areas behind the barrier such as to minimize damage to impacting vehicles and their occupants, and to reduce the risk of injuries to pedestrians and workers. Flashing Lamps: warning devices used to supplement other controls and devices necessary to alert motorists of construction and maintenance activities or obstructions in the roadway. Delineators: light retro-reflecting devices mounted at the side of the roadway, in series, to indicate the roadway alignment. Traffic Cones: devices which may be conical in shape or tubular-shaped capable of performing channelization of traffic which may be set on the surface of the roadway or rigidly attached for continued use. Temporary Curbing: roadwork devices consisting of pre-cast concrete sections, sandbag, and others which, may be used to guide traffic at the construction site. Flexible Post or Bollard: device used in place of rigid barrier posts or traffic cones with a minimum of 450mm by 50mm wide with alternate bands of contrasting color as seen by approaching traffic for delineation of traffic.