fh_wall4.x10

define variables that must be assigned values in the input data file: "guardrail foreslope width" "wall foreslope dist" "wall foreslope"   (e.g., -1:4 for Metric, 4:-1 for English) "mse wall batter"   (e.g., -18:1 for Metric, 1:-18 for English) "wall width factor" "wall lift ht" "min mse reinf length" define_dgn variables that must be assigned values in the input data file: None Variables that must be defined in exceptions data file: _d_wall_used_lt _d_wall_used_rt Notes for fh_wall4.x10: Details match revised standard metric detail M255-02 dated 12/00. Station ranges for the MSE wall are set with the _d_wall_used_lt and _d_wall_used_rt variables in the exceptions data file as shown below.  (_d_wall_used_lt and _d_wall_used_rt must be set to 1 to make this criteria file work correctly.)    if sta >= 1+000 r 1 and sta <= 1+100 r 1 then       {       _d_wall_used_lt = 1       } This criteria will not do any widening of the roadway structural section. It simply adds the MSE wall section at the point where the preceding criteria file left off. If "wall lift ht" is defined in the input file to be something greater than zero, then the design height of the wall (H in the detail shown above) will be an even number of "wall lift ht" units plus an additional 0.30 meters (see the next note). By default the "wall lift ht" is set to zero in order to make this option transparent for previously designed jobs. The additional 0.30 meters tacked onto the even number of "wall lift ht" units represents the recommended leveling pad depth, and is taken directly from standard detail M255-02. The user may override the default 0.30 meter depth by defining "~leveling pad depth" in the input file. The minimum horizontal distance from the toe of the wall to existing ground is fixed at 1.20 meters in M255-02. Although it is discouraged, this distance can be changed by defining the "toe to existing ground offset" variable to the desired distance in the input file. The "wall width factor" controls the length of soil reinforcement and pervious backfill unless "min mse reinf length" has been set in the input file and it controls (see the next note). Standard M255-02 recommends a minimum value of 0.70 for "wall width factor". If the user defines "min mse reinf length" in the input file to something greater than zero, then the width of the reinforced volume will be either "wall width factor" x wall height or "min mse reinf length", whichever is greater. By default "min mse reinf length" is set to 0 in order to make this option transparent for previously designed jobs. The optional define variable "addn exc width" may be used to control the distance the construction excavation extends past the end of the wall reinforcement. By default this variable is set to 0.30 meters to match the recommended value from M255-02. This criteria draws the lines needed to calculate the earthwork quantities that are subsidiary to the MSE wall (i.e., structure excavation and select granular backfill). The level/symbology for the earthwork lines is as follows:  LV   CO   LC   Functional Class   Soil Type  11 11 0  Proposed undercut   MSE_WALL_SELECT_BACKFILL  12 12 0 Proposed undercut EMBANKMENT 40 40 3 Existing suitable MSE_WALL_STRUCTURE_EXC 41 41 3 Existing suitable ROADWAY_EXC By default the foreslope from the top of the pavement shoulder point to the top point of the wall face will be a compound slope with a break at the roadway subgrade. The slope of the top portion is controlled by "guardrail foreslope width" and the structural section thickness; the slope of the bottom portion is controlled by the variables "wall foreslope dist" and "wall foreslope". The user may optionally force a continuous foreslope from the top of pavement shoulder to the top point of the wall face by adding the following line to the input file:        define "~continuous wall foreslope" 1 If this option is used, interpretation of the "wall foreslope" and "wall foreslope dist" variables changes from what it is for the default case. For this situation the variables refer to the entire foreslope from top of pavement shoulder to top of wall point rather than to just the lower portion of the foreslope. The user has no control over the assumed structure excavation backslope; it is fixed at 1:1. The user may toggle off the minimum wall embedment depth requirement that's specified in the table in standard detail CM255-02 by defining the variable "~ignore min toe embedment requirement" to a value of 1 in the input file. (Note: This is not recommended practice. MSE walls should be designed to meet the requirements shown in standard detail CM255-02.) The user may vary the minimum horizontal distance from the toe of the wall to existing ground for station ranges by using the variable _d_toe_to_exist_ground_offset in the except.dat file. (Note: This not recommended practice. MSE walls should be designed to meet the requirements shown in standard detail CM255-02.)

Toe Embedment Details for fh_wall4.x10

Foreslope Details for fh_wall4.x10

fh_wall4w.x10

define variables that must be assigned values in the input data file: "wall foreslope dist" "wall foreslope"   (e.g., -1:4 for Metric, 4:-1 for English) "mse wall batter"   (e.g., -18:1 for Metric, 1:-18 for English) "wall width factor" "wall lift ht" "min mse reinf length" "structure exc dist" define_dgn variables that must be assigned values in the input data file: None Variables that must be defined in exceptions data file: _d_wall_used_lt _d_wall_used_rt Notes for fh_wall4w.x10: Reworked version of fh_wall4.x10 to conform to WFL standards.. Station ranges for the MSE wall are set with the _d_wall_used_lt and _d_wall_used_rt variables in the exceptions data file as shown below.  (_d_wall_used_lt and _d_wall_used_rt must be set to 1 to make this criteria file work correctly.)    if sta >= 1+000 r 1 and sta <= 1+100 r 1 then       {       _d_wall_used_lt = 1       } This criteria will not do any widening of the roadway structural section. It simply adds the MSE wall section at the point where the preceding criteria file left off. If "wall lift ht" is defined in the input file to be something greater than zero, then the design height of the wall (H in the detail shown above) will be an even number of "wall lift ht" units plus an additional 0.30 meters (see the next note). By default the "wall lift ht" is set to zero in order to make this option transparent for previously designed jobs. The additional 0.30 meters tacked onto the even number of "wall lift ht" units represents the recommended leveling pad depth, and is taken directly from standard detail M255-02. The user may override the default 0.30 meter depth by defining "~leveling pad depth" in the input file. The minimum horizontal distance from the toe of the wall to existing ground is fixed at 1.20 meters in M255-02. Although it is discouraged, this distance can be changed by defining the "toe to existing ground offset" variable to the desired distance in the input file. The "wall width factor" controls the length of soil reinforcement and pervious backfill unless "min mse reinf length" has been set in the input file and it controls (see the next note). Standard M255-02 recommends a minimum value of 0.70 for "wall width factor". If the user defines "min mse reinf length" in the input file to something greater than zero, then the width of the reinforced volume will be either "wall width factor" x wall height or "min mse reinf length", whichever is greater. The structure excavation limits are always drawn as vertical. The user to cannot change this. The foreslope from the top of the pavement shoulder point to the top point of the wall face is drawn as a continuous slope by default to conform to WFL practice. The user may optionally force a compound foreslope from the top of pavement shoulder to the top point of the wall face (the CFL standard) by adding the following line to the input file:        define "~continuous wall foreslope" 0 If this option is used, interpretation of the "wall foreslope" and "wall foreslope dist" variables changes from what it is for the default case. For this situation these two variables refer to only the portion of the foreslope from the subgrade shoulder point out to the top of the wall. The roadway structural section foreslope is determined using the "guardrail foreslope width" variable and the depth of the structural section. Level/symbology for earthwork:

Toe Embedment Details for fh_wall4w.x10

Foreslope Details for fh_wall4w.x10

fh_wall5.x10

define variables that must be assigned values in the input data file: "guardrail foreslope width" "wall foreslope dist" "wall foreslope"   (e.g., -1:4 for Metric, 4:-1 for English) "mse wall batter"   (e.g., -18:1 for Metric, 1:-18 for English) "wall width factor" "wall lift ht" "min mse reinf length" define_dgn variables that must be assigned values in the input data file: "mse wall in dgn" Variables that must be defined in exceptions data file: None Notes for fh_wall5.x10: Details match revised standard metric detail M255-02 dated 12/00. Both station ranges for the MSE wall and offsets from the roadway shoulder to the face of the MSE wall are set with lines drawn in a plan view dgn file. This criteria will automatically widen the roadway structural section as necessary to match the location of the MSE wall face with the offset of the "mse wall in dgn" line. Previous versions of retaining wall criteria files were plagued with tolerance problems when the user attempted to draw the "mse wall in dgn" line so that there was no additional widening of the roadway when the retaining wall section was drawn. In order to avoid these tolerance problems, this criteria was written so that if the "mse wall in dgn" line is drawn anywhere from the roadway centerline out to the theoretical draw-the-wall-with-no-roadway-widening line then the MSE wall will be drawn on the cross-section without widening the roadway section . So, if you use this criteria and don't want any pavement widening, draw the "mse wall in dgn" line slightly (or not so slightly) inside of where you calculate the face of the wall should be. If "wall lift ht" is defined in the input file to be something greater than zero, then the design height of the wall (H in the detail shown above) will be an even number of "wall lift ht" units plus an additional 0.30 meters (see the next note). By default the "wall lift ht" is set to zero in order to make this option transparent for previously designed jobs. The additional 0.30 meters tacked onto the even number of "wall lift ht" units represents the recommended leveling pad depth, and is taken directly from standard detail M255-02. The user may override the default 0.30 meter depth by defining "~leveling pad depth" in the input file. The minimum horizontal distance from the toe of the wall to existing ground is fixed at 1.20 meters in M255-02. Although it is discouraged, this distance can be changed by defining the "toe to existing ground offset" variable to the desired distance in the input file. The "wall width factor" controls the length of soil reinforcement and pervious backfill unless "min mse reinf length" has been set in the input file and it controls (see the next note). Standard M255-02 recommends a minimum value of 0.70 for "wall width factor". If the user defines "min mse reinf length" in the input file to something greater than zero, then the width of the reinforced volume will be either "wall width factor" x wall height or "min mse reinf length", whichever is greater. By default "min mse reinf length" is set to 0 in order to make this option transparent for previously designed jobs. The optional define variable "addn exc width" may be used to control the distance the construction excavation extends past the end of the wall reinforcement. By default this variable is set to 0.30 meters to match the recommended value from M255-02. This criteria draws the lines needed to calculate the earthwork quantities that are subsidiary to the MSE wall (i.e., structure excavation and select granular backfill). The level/symbology for the earthwork lines is as follows:  LV   CO   LC   Functional Class   Soil Type  11 11 0  Proposed undercut   MSE_WALL_SELECT_BACKFILL  12 12 0 Proposed undercut EMBANKMENT 40 40 3 Existing suitable MSE_WALL_STRUCTURE_EXC 41 41 3 Existing suitable ROADWAY_EXC By default the foreslope from the top of the pavement shoulder point to the top point of the wall face will be a compound slope with a break at the roadway subgrade. The slope of the top portion is controlled by "guardrail foreslope width" and the structural section thickness; the slope of the bottom portion is controlled by the variables "wall foreslope dist" and "wall foreslope". The user may optionally force a continuous foreslope from the top of pavement shoulder to the top point of the wall face by adding the following line to the input file:        define "~continuous wall foreslope" 1 If this option is used, interpretation of the "wall foreslope" and "wall foreslope dist" variables changes from what it is for the default case. For this situation the variables refer to the entire foreslope from top of pavement shoulder to top of wall point rather than to just the lower portion of the foreslope. The user has no control over the assumed structure excavation backslope; it is fixed at 1:1. The user may toggle off the minimum wall embedment depth requirement that's specified in the table in standard detail CM255-02 by defining the variable "~ignore min toe embedment requirement" to a value of 1 in the input file. (Note: This is not recommended practice. MSE walls should be designed to meet the requirements shown in standard detail CM255-02.) The user may vary the minimum horizontal distance from the toe of the wall to existing ground for station ranges by using the variable _d_toe_to_exist_ground_offset in the except.dat file. (Note: This not recommended practice. MSE walls should be designed to meet the requirements shown in standard detail CM255-02.)

Toe Embedment Details for fh_wall5.x10

Foreslope Details for fh_wall5.x10

c_wall9d.x10

define variables that must be assigned values in the input data file: "min mse reinf length"   (default = 0) "mse wall batter"   (e.g., -18:1 for Metric, 1:-18 for English) "toe depth calc method"   (default = 1) "toe to exist ground offset" "upper mse wall profile" "upper mse wall tier height" "wall lift height" "wall width factor"   (e.g., 0.75) "toe depth [1-5]" "max wall ht for toe depth [1-5]" define_dgn variables that must be assigned values in the input data file: "lower mse wall in dgn" "upper mse wall in dgn" Variables that must be defined in exceptions data file: none Notes for c_wall9d.x10:  Station range for the MSE wall, distance from the roadway centerline to the face of the MSE wall, and configuration of the MSE wall (i.e., one or two tier) are all controlled by lines drawn in a plan view dgn file. The level/symbology for these "in dgn" lines is defined in the input file with the define_dgn variables "upper mse wall in dgn" and "lower mse wall in dgn". If both the "upper mse wall in dgn" line and the "lower mse wall in dgn" line are found at a particular station, then a two-tier wall will be drawn for that x-section. (See Two-Tier Wall Details.)" If only the "upper mse wall in dgn" line is found at a particular station, then a single tier wall will be drawn for that x-section. If only the "lower mse wall in dgn" line is found at a particular station, then no MSE wall will be drawn for that x-section. For a single tier wall, the upper corner of the wall face will be drawn in the x-section to match the distance from centerline to the "upper mse wall in dgn" line. (The elevation of the upper corner of the wall face is determined as outlined in Notes #2 and #3 below.) For a two tier wall, the upper corner of the upper tier wall face will be drawn in the x-section to match the distance from centerline to the "upper mse wall in dgn" line. The upper corner of the lower tier wall face will be drawn in the x-section to match the distance from centerline to the "lower mse wall in dgn" line. (The elevation of the upper corner of the upper tier wall face is determined as outlined in Notes #2 and #3 below. The elevation of the upper corner of the lower tier wall face is determined as outlined in Note #4 below.) The top of MSE wall elevation (i.e., the point at the top of the wall face) is set using a profile stored in COGO. The variable "upper mse wall profile" in the input file tells this criteria file the name of the COGO profile. The stationing of the COGO profile must match the stationing of the roadway centerline where the wall is needed. For a two-tier wall, the height of the upper tier is a fixed valued set with the "upper mse wall tier height" variable in the input file. (A fixed elevation bench doesn't work very well in practice, especially for a long wall on a constant steep grade section of road.) The overall wall height will always be set to be an even number of "mse wall lift ht" units. This is true for either a one- or two-tier wall section. (Notice that for a two-tier wall the heights of the individual tiers will be even multiples of "mse wall lift ht" only if the user defines "upper mse wall tier height" to be an even multiple of "mse wall lift ht".) The reference point from which minimum toe depth for the wall is calculated may (optionally) be set by the user with the "toe depth calc method" variable in the input file. By default the reference point is on the existing ground a distance of "toe to exist ground offset" from the face of the wall. All the available options for "toe depth calc method" are shown in the figures below. (Note: Despite varying opinions on which is the "correct" method to use, experience has shown that the option chosen has very little effect on the final wall height except when the existing ground is extremely steep.) The "toe depth n" and "max wall ht for toe depth n" pairs of variables control the minimum toe depth of the wall. In general, the toe depth increases as the wall height increases. The values listed below are the defaults; if these values are OK then the variables need not be defined in the input file. define "toe depth 1" 0 define "max wall ht for toe depth 1" 4.30 define "toe depth 2" 0.15 define "max wall ht for toe depth 2" 6.10 define "toe depth 3" 0.30 define "max wall ht for toe depth 3" 7.30 define "toe depth 4" 0.45 define "max wall ht for toe depth 4" 9.20 define "toe depth 5" 0.60 define "max wall ht for toe depth 5" 1000 The length of soil reinforcement (e.g., geogrid or welded wire fabric) and pervious backfill that is drawn by this criteria file is either the "min mse wall reinf length" value or ("wall width factor" x wall height), whichever is greater. In most cases "wall width factor" will be in the range of 0.70-0.80. c_wall9d.x10 draws additional "earthwork" lines beyond what is required to simply define the wall geometry. These additional lines allow the earthwork procedure to calculate separate quantities for structure excavation and special wall backfill. Special level/symbology for earthwork is as follows: Existing suitable Soil type = STRUCTURE_EXC lv=40 co=40 Proposed undercut Soil type = WALL_BACKFILL lv=41 co=41 Proposed undercut Soil type = EMBANKMENT lv=42 co=42 The user has no control over the assumed structure excavation backslope; it is fixed to match the slope of the face of the wall.