project however where fill material is required, such as, a raised helicopter landing zone. Modify b Note: Repeat the above Elevation, Elevation, until you get the desired result. (d) Sloping the PAD. Another important aspect when you are involved in civil design is the drainage consideration. You must consider weather/rainfall almanacs of the project site. Immediate consideration is the effect of the structure as to where the water will flow. You do not want to flood an existing structure nearby because you improperly placed the direction of water drainage. You need to analyze the site plan and corresponding contour lines to identify where water naturally flows out towards. From your site plan, there may be existing planimetric structures, such as: manholes, storm drain, drainage ditch, etc. where you can slope your design and where the water will drain towards. INSTRUCTORS NOTE: Use the Dry-Erase Board as necessary to clarify. 1 Percent Formula. Before we move further in our lesson, we will take a look at the basic equation in determining slope. From the below equation, you can perform algebraic procedures to come up with numbers you may need. Elev A - Elev B a Distance b Example. for Elev B. ? 1142.78 - 98.00 The elevation of B is 1141.80ft. How did we come up with that elevation? By use of algebraic procedures is how we came up with the elevation of 1141.80ft. 98_ 100 0.98 - Elev B = 1142.78 Elev B = 1142.78 - 0.98
project however where fill material is required, such as, a raised helicopter landing zone. b Note: Repeat the above Modify Elevation, Elevation, until you get the desired result. (d) Sloping the PAD. Another important aspect when you are involved in civil design is the drainage consideration. You must consider weather/rainfall almanacs of the project site. Immediate consideration is the effect of the structure as to where the water will flow. You do not want to flood an existing structure nearby because you improperly placed the direction of water drainage. You need to analyze the site plan and corresponding contour lines to identify where water naturally flows out towards. From your site plan, there may be existing planimetric structures, such as: manholes, storm drain, drainage ditch, etc. where you can slope your design and where the water will drain towards. INSTRUCTORS NOTE: Use the Dry-Erase Board as necessary to clarify. 1 Percent Formula. Before we move further in our lesson, we will take a look at the basic equation in determining slope. From the below equation, you can perform algebraic procedures to come up with numbers you may need. a Elev A - Elev B Distance b Example. for Elev B. 1142.78 - ? 98.00 The elevation of B is 1141.80ft. How did we come up with that elevation? By use of algebraic procedures is how we came up with the elevation of 1141.80ft. 98_ 100 0.98 - Elev B = 1142.78 Elev B = 1142.78 - 0.98