![]() Nominal 2½ inches (2.375 inches) OD steel tube or pipe and a maximum post spacing of 6 feet x 8 feet. Nominal 2 inches (1.9 inches) OD steel tube or pipe and a maximum post spacing of 4 feet x 7 feet Nominal 2 inches (1.9 inches) OD steel tube or pipe and a maximum post spacing of 4 feet x 10 feet NOTE: Bearers must be installed in the direction of the shorter dimension. scaffold means a temporary elevated platform and supporting structure used for providing access to and supporting workmen or materials or both. Nominal 2 inches (1.9 inches) OD steel tube or pipe NOTE: Longitudinal diagonal bracing must be installed at an angle of 45° (±5°). ![]() Where conditions do not permit the attachment of bracing to posts, bracing must be attached to the runners as close to the post as possible.Bracing must be installed as close as possible to the intersection of the bearer and post or runner and post.On scaffolds whose length is less than their height, longitudinal bracing must be installed from the base of the end posts upward to the opposite end posts, and then in alternating directions until reaching the top of the scaffold.On scaffolds whose length is greater than their height, longitudinal bracing must be repeated beginning at least at every fifth post.Extend upward from the base of the end posts to the top of the scaffold at approximately a 45-degree angle.Be installed diagonally in both directions.On straight run scaffolds, longitudinal bracing across the inner and outer rows of posts must :.Be installed at the bearer levels between the transverse bracing.Bracing must extend upward diagonally to opposite sides of the scaffold, such as from the inner posts or runners to the next outer posts or runners, or vice versa.Every third set of posts horizontally (measured from only one end).Transverse bracing forming an "X" across the width of the scaffold must be installed at the scaffold ends, and at least at :.Pip will look into the setup.py of splinter package, and find what needs to be installed with the '' option specified. The '' is the 'extra' option for the 'splinter' package. The reason why the two pip install commands achieve same is because this is literally what has been run in the background based on the setup.py of the splinter package Pip install "splinter" "Django>=2.0.6" "lxml>=4.2.4" "cssselect"Īs of splinter=0.16.0, with python=3.9.2, the above two commands are equivalent.īoth pip install will result in the following packages given a clean virtual enviroment. To be specific, the above line will install first the 'splinter' package, then install the extra dependencies the 'splinter' project requires with the 'django' option specified in a setup.py of 'splinter' project. The square bracket contains the 'extra' option's information defined in setup.py that pip will use to install additional dependencies. On the right are the correlated installation commands for these optional sub-packages. On the left in setup.py - extras_require is defined. You can see how this was accomplished in the setup.py script Swe-airflow-tools (0.0.3) - Tools for Apache Airflow ApplicationĪirflow (0.6) - Placeholder for the old Airflow package Pylint-airflow (0.1.0a1) - A Pylint plugin to lint Apache Airflow code. When we search pypi for apache-airflow note that the optional packages do not show up: pip search 'apache-airflow'Īpache-airflow (1.10.9) - Programmatically author, schedule and monitor data pipelines You can install optional components of airflow with: pip install 'apache-airflow' To install airflow from pip we use this command: pip install 'apache-airflow' Just in case another developer comes along looking to implement this pattern in their own Python package deployment, here's further explanation of the brackets in pip. Brackets in PIP signify optional dependencies
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