1) The ground profile is to be in color ‘Black’ with a lineweight of 0.3mm.
2) The texts of ground levels are to be in color ‘Black’ with a text height of 2mm.
3) The profile of C.B.L is to be in color ‘38’ with a lineweight of 0.3mm.
4) The texts of C.B.L are to be in color ‘30’ with a text height of 2mm.
5) The profile of F.S.L is to be in color ‘Blue’ with a lineweight of 0.3mm.
6) The texts of F.S.L are to be in color ‘Blue’ with a text height of 2mm.
7) The profile of T.B.L is to be in color ‘Red’ with a lineweight of 0.3mm.
8) The texts of T.B.L are to be in color ‘Red’ with a textheight of 2mm.
9) The chainages are to be in color ‘Black’ and the chainages of structures are to be in color ‘Red’ with a text height of 2mm.
10) The text of titles Chainage, Distance, Ground Level, C.B.L., F.S.L, T.B.L, Height of Banking, Depth of Cutting and Village Limits are to be with a text height of 2.5mm.
11) The texts of structures are to be in color ‘Black’ with a text height of 2mm enclosed in rectangle of color ‘Blue’ and lineweight ‘0.9mm”.
12) The texts of villages are to be in color ‘Black’ with a text height of 2mm.
13) The texts of datum levels are to be in color ‘Black’ with a text height of 2mm.
14) Soil classification has to be as shown in legend and width of hatch pattern is to be 5mm shown from G.L to C.B.L.
Tuesday, April 21, 2009
Step 4 (Using AutoCAD for remaining part of information required to complete the total exercise)
1) Insert the prearranged legend for soil classification into the L.S drawing.
2) The soil classification has to be drawn from G.L to C.B.L in form of hatch patterns with a width of 5mm as in the Soil Classification Legend. The color, Type of pattern and Spacing of pattern shall match as in Legend.
3) The names of villages through which the Alignment of the L.S is passing, are to be placed in the row of Village limits with a text height of 2mm in color ‘Black’. If the alignment is passing through two or more villages the boundaries of the villages are to be drawn as vertical lines in the row at their respective chainages.
2) The soil classification has to be drawn from G.L to C.B.L in form of hatch patterns with a width of 5mm as in the Soil Classification Legend. The color, Type of pattern and Spacing of pattern shall match as in Legend.
3) The names of villages through which the Alignment of the L.S is passing, are to be placed in the row of Village limits with a text height of 2mm in color ‘Black’. If the alignment is passing through two or more villages the boundaries of the villages are to be drawn as vertical lines in the row at their respective chainages.
Step 3 (Using Prearranged Macro to Generate L.S in AutoCAD)
In the Excel go to menu Tools → Macro → Macros, Select Sheet1.genls and click Run button. The macro opens an AutoCad drawing window and generates L.S in the window. Save AutoCAD drawing as per the File Naming Procedure of the company.
Note: If the Excel file contains in-sufficient or in-correct Input data the macro terminates with out generating the L.S. If so rectify the errors in the Input data and run the macro once again.
Note: If the Excel file contains in-sufficient or in-correct Input data the macro terminates with out generating the L.S. If so rectify the errors in the Input data and run the macro once again.
Step 2 (Exploration of Input Data)
1) Make a copy of existing (pre arranged) Excel file named “LS-Full-Generator-Base-Program-Acad-2005” to the required path and rename it as per the File Naming Procedure of the company.
2) Open the Excel file to feed the required Input Data.
3) In the Chainage column enter all the chainages including the chainages of the structures starting from row number 3.
4) In the G.L. column enter all the ground levels for the respective chainages.
5) In the C.B.L. column the values of C.B.L. for respective chainages are to be worked out using following formula.
C.B.L = Previous C.B.L – (Distance from previous chainage x Surface fall)
Note:
When ever loss of head occurs due to the proposed structures at any predetermined chainages, an additional C.B.L. is to be calculated by applying the above said standard equation and head loss due to corresponding structure. Head loss factors are to be collected from the design department.
C.B.L (At Structure) = Previous C.B.L – {(Distance from previous chainage x Surface fall + Head loss)}
6) In the F.S.L column the values of F.S.L for the respective chainages are to be worked out by adding Full Supply Depth (F.S.D) at the respective chainage to the C.B.L.
Full Supply Level (F.S.L) = C.B.L. + F.S.D.
7) In the T.B.L column the values of T.B.L for the respective chainages are to be worked out by adding Free Board at the respective chainage to the F.S.L.
Top Banking Level (T.B.L) = F.S.L + Free Board.
8) In the HOC column the values of Height of Banking at the respective chainages are to be worked out using following formula.
Height of Banking = if(T.B.L – G.L > 0 , T.B.L – G.L, 0.0)
9) In the DOC column the values of Depth of Cutting at the respective chainages are to be worked out using following formula.
Depth of Cutting = if(G.L – C.B.L > 0 , G.L – C.B.L , 0.0)
10) In the columns of Description of Structures the columns respective to chainages of structures are to be filled by the description regarding those structures.
The description of structures shall include the Chainage of the structure, Type of structure, Catchment Area (C.A), Maximum Flood Discharge (M.F.D), Deepest Bed Level and Observed Maximum Flood Level (O.M.F.L) in case of drains and Name of the Road, Road Crest Level (R.C.L), Road Width & Type of Road in case of Roads.
2) Open the Excel file to feed the required Input Data.
3) In the Chainage column enter all the chainages including the chainages of the structures starting from row number 3.
4) In the G.L. column enter all the ground levels for the respective chainages.
5) In the C.B.L. column the values of C.B.L. for respective chainages are to be worked out using following formula.
C.B.L = Previous C.B.L – (Distance from previous chainage x Surface fall)
Note:
When ever loss of head occurs due to the proposed structures at any predetermined chainages, an additional C.B.L. is to be calculated by applying the above said standard equation and head loss due to corresponding structure. Head loss factors are to be collected from the design department.
C.B.L (At Structure) = Previous C.B.L – {(Distance from previous chainage x Surface fall + Head loss)}
6) In the F.S.L column the values of F.S.L for the respective chainages are to be worked out by adding Full Supply Depth (F.S.D) at the respective chainage to the C.B.L.
Full Supply Level (F.S.L) = C.B.L. + F.S.D.
7) In the T.B.L column the values of T.B.L for the respective chainages are to be worked out by adding Free Board at the respective chainage to the F.S.L.
Top Banking Level (T.B.L) = F.S.L + Free Board.
8) In the HOC column the values of Height of Banking at the respective chainages are to be worked out using following formula.
Height of Banking = if(T.B.L – G.L > 0 , T.B.L – G.L, 0.0)
9) In the DOC column the values of Depth of Cutting at the respective chainages are to be worked out using following formula.
Depth of Cutting = if(G.L – C.B.L > 0 , G.L – C.B.L , 0.0)
10) In the columns of Description of Structures the columns respective to chainages of structures are to be filled by the description regarding those structures.
The description of structures shall include the Chainage of the structure, Type of structure, Catchment Area (C.A), Maximum Flood Discharge (M.F.D), Deepest Bed Level and Observed Maximum Flood Level (O.M.F.L) in case of drains and Name of the Road, Road Crest Level (R.C.L), Road Width & Type of Road in case of Roads.
Step 1 (Collection of Input Data)
1) Field information like Chainage, Ground Levels (G.L.), Village Limits (Names of villages), etc. are to be collected from the field (Surveyors).
2) Details of the proposed structures and their chainages are to be collected from the design department.
3) Soil classification like All Kinds of Soils (A.K.S.), Soft Disintegrated Rock (S.D.R.), Hard Disintegrated Rock (H.D.R.), Fractured & Fissured Rock (F&F) and Hard Rock (H.R.) etc. are to be collected from field (Geologists).
4) Hydraulic Particulars (H.P’s) like, initial Canal Bed Level (C.B.L.), Bed Fall, Full Supply Depth (F.S.D.) and Free Board, etc. are to be collected from Design Department.
2) Details of the proposed structures and their chainages are to be collected from the design department.
3) Soil classification like All Kinds of Soils (A.K.S.), Soft Disintegrated Rock (S.D.R.), Hard Disintegrated Rock (H.D.R.), Fractured & Fissured Rock (F&F) and Hard Rock (H.R.) etc. are to be collected from field (Geologists).
4) Hydraulic Particulars (H.P’s) like, initial Canal Bed Level (C.B.L.), Bed Fall, Full Supply Depth (F.S.D.) and Free Board, etc. are to be collected from Design Department.
Methodology to Prepare LS by Office Staff
Preparation of L.S. involves several steps to accomplish in full shape. The following are the steps.
1) Collection of Input Data from the field and design department.
2) Exploration of Input Data using Microsoft Excel.
3) Using Prearranged Macro to Generate L.S. in AutoCAD.
4) Using AutoCAD for remaining part of information required to complete the total exercise.
1) Collection of Input Data from the field and design department.
2) Exploration of Input Data using Microsoft Excel.
3) Using Prearranged Macro to Generate L.S. in AutoCAD.
4) Using AutoCAD for remaining part of information required to complete the total exercise.
What is Longitudinal Section (L.S.)?
Longitudinal Section is the profile showing the levels of existing ground along an Alignment at specific intervals and the profiles of the proposals of the canal like Canal Bed Level (C.B.L), Full Supply Level (F.S.L), Top Banking Level (T.B.L) and etc.
Subscribe to:
Posts (Atom)