Tally Erp 9.3.2 Crack 41
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Each test section must be laid out consistently each time a surveyis conducted. Sections begin and end at the stations marked on the pavement.Lateral extent of the section, for survey purposes, will vary depending on theexistence of longitudinal joints and cracks and the relative position of thelane markings. Figures A1 and A2 illustrate the rules to follow when determiningthe lateral extent of the section for a distress survey. The lateral extent ofthe test sections should be consistent with prior distress surveys. On widened PCCsections, the lateral extent of the test section includes the full width (4.3 m)of the slab measured from the centerline longitudinal joint to the shoulderjoint. The lateral extent of AC test sections with double yellow lines on thecenterline are determined by using the inside yellow line.
The distresses are drawn on the map at the scaled location usingthe symbols appropriate to the pavement type. In general, the distress isdrawn and is labeled using the distress type number and the severity level (L,M, or H) if applicable. For example, a high severity longitudinal crack in thewheel path of an ACP would be labeled "4aH." An additional symbol is addedbeside the distress type and severity symbol in cases where the crack orjoint is well-sealed. Figures specifying the symbols to be used for each pavement typeare presented in the following chapters. In addition, example maps areprovided to illustrate properly completed maps.
If map cracking/scaling, or polished aggregate occur in largeareas over the test section, do not map the total extent. Instead, note the location,extent, and severity level if applicable in the space for comments underneaththe appropriate map(s). These distresses should be mapped only if they occur in localizedareas.
Location of the vehicle wheel paths is critical for distinguishingbetween types of longitudinal cracking in ACP. Figure A3 illustrates theprocedure for establishing the location and extent of the wheel paths. Bothwheel paths must be drawn and identified on the distress maps. The distressesobserved are recorded to scale on map sheets. The individual distresses andseverity levels depicted on the map are carefully scaled and summed to arrive atthe appropriate quantities (e.g., square meters or number ofoccurrences) and are then recorded on sheets 1-3. It is important to carefully evaluatethe distress map for certain distress types which have multiple methods ofmeasurement because of orientation or location within the section.Longitudinal cracking, in the wheel path or elsewhere, are examples of these. Except whereindicated otherwise, entries are made for all distress data elements. If aparticular type of distress does not exist on the pavement, enter "0" as a positive indication that the distress was not overlooked in summarizing the map sheets. All data sheets are to be completed in the field prior to departing the site. Symbols to be used for mapping ACP sections are contained in figure A4, and anexample mapped section is shown in figure A5.
This data sheet provides space to record faulting information foreach transverse joint and transverse crack. Distance from the beginningof the section, and faulting measurements made at two transverselocations, are recorded. The transverse locations are 0.3 m and 0.75 m from theoutside edge of the slab. For widened lanes, measure 0.3 m from the edgeof the slab and 0.75 m from the outside edge of the lane edge stripe. At eachlocation, three measurements are made, but only the approximate average ofthe readings is recorded to the nearest millimeter.
This part of the appendix shows completed maps and survey formsfor a JCP 60 m in length. The rater uses the definitions from the DistressIdentification Manual and the symbols from this appendix when mapping the section. The raterthen quantifies each distress (and severity levels for the appropriatedistresses) on the map. The rater then uses the right margin of the map sheets totally the quantities of each distress type. This method is required because itsimplifies totaling the various distress types, and reduces errors. The rater then usesthe tallies from each map sheet to add the distress quantities. The section totals areentered in the left margin of the first map sheet. 2b1af7f3a8