The hatch patterns for material types and names in drawings are defined in a hatch schema file .htc. Different drawing types (general arrangement, assembly, single-part, and cast unit drawings) have their own schema files.
The hatch patterns defined in schema files are used when you set Type to Automatic on the Fill page in the part or shape properties.
Hatch schema file name and location
The name of the schema file Tekla Structures uses for each drawing type is defined in the Hatching category of the Advanced options dialog box:
XS_DRAWING_GA_HATCH_SCHEMA=general.htc
XS_DRAWING_ASSEMBLY_HATCH_SCHEMA=assembly.htc
XS_DRAWING_SINGLE_PART_HATCH_SCHEMA=single.htc
XS_DRAWING_CAST_UNIT_HATCH_SCHEMA=cast_unit.htc
The default schema files are located in the ..\Tekla Structures\<version>\environments\common\system folder. The environment-specific schema files are located under the environments, for example:
..Tekla Structures\<version>\Environments\<environment>\system\steel\general.htc (also assembly.htc, single.htc)
..Tekla Structures\<version>\Environments\<environment>\system\concrete\precast\cast_unit.htc
Schema file syntax
Material type, Cast unit type, Material name, Hatch name, Scale, Color, Automatic scaling and rotation
Examples:
CONCRETE,,hardware_SOLID,,120 (gray shade)
CONCRETE,Precast,C25/30,CONC,0.3,1 ("traditional" concrete Precast)
CONCRETE,CIP,C25/30,CONCRE,0.3,1 ("traditional" concrete CIP)
CONCRETE,,CROSS,2,1 (small crosses)
MISCELLANEOUS,Insulation,HARD_INS1,1,,1 (straight lines)
MISCELLANEOUS,Insulation,SOFT_INS,1,,1 (rounded lines)
MISCELLANEOUS,Insulation,SOFT_INS2,1,,1 (completely round)
To see an example of the cast_unit.htc file, click the following link: cast_unit.htc