Dawit fekadu (ጆሜትራ)
Region: ET
Sunday 28 June 2026 11:44:16 GMT
10271
404
9
92
Music
Download
Comments
ENL :
In engineering, the accepted position of a perforated pipe in a subsurface drainage system depends on the purpose of the system, but in most building and civil engineering projects: The perforations (holes) are usually placed downward, typically at the 4 o'clock and 8 o'clock positions (or sometimes directly at the 6 o'clock position, depending on the design standard). The pipe is laid at the lowest point of the drainage trench, on a bed of clean gravel, so groundwater can enter the pipe from below and the sides. This helps lower the groundwater level and relieve hydrostatic pressure around foundations or retaining walls. This arrangement is generally preferred because: It collects groundwater more effectively. It reduces hydrostatic pressure acting on the structure. Sediment is filtered by the surrounding gravel before entering the pipe. it's good tiktok contents but bro we need deep understanding engineering concepts and each works it's dependes design manual sometimes 👍
2026-06-28 15:12:20
0
ዴር 30 :
What about 45°?
2026-06-28 15:00:25
0
abcd :
ወደላይም ቢሆን ችግር የለውም.... that much effect የለውም... ውሃውን around the pipe መሰብሰብ እስከቻልክ ድረስ....👍
2026-06-28 12:41:15
1
Jonah G. :
slots must be upward. bottom part of the blind pipe conveys the subsurface water to the manhole. Simple science
2026-06-28 17:37:32
0
Mente Kelemu :
👍👍👍
2026-06-28 19:54:34
0
Jonah 😎 :
👍👍👍
2026-06-28 11:51:20
0
Dawit Tilahun (Eng.) :
While there is some debate depending on the specific application e.g. Roof downspout conveyance vs. groundwater collection, placing the slots facing downward is generally considered superior for groundwater disposal for some reasons Effective Collection- Groundwater naturally saturates the soil from the bottom of the trench upward. By having the holes facing down, the pipe is positioned to capture this water as it rises into the gravel envelope surrounding the pipe, rather than waiting for the water level to reach the top half of the pipe. Reduced Sediment Infiltration- When holes face upward, dirt, silt, and debris can more easily fall directly into the pipe through the openings. With the holes facing downward, debris is less likely to enter the system as easily, helping to maintain the pipe's long-term flow capacity. Physics of Water Movement- Water follows the path of least resistance. In a properly constructed trench with a gravel bed, water will gravitate toward the bottom of the trench, where the downward-facing slots allow it to enter the pipe efficiently. Critical Best Practices for Installation- Regardless of the perforation orientation, the performance of your system relies heavily on the following installation standards: 1. Uniform Gradient (Fall)-Gravity is the primary driver of your system. You must establish a consistent slope (typically a minimum of 1% grade, or 1/8 inch per foot) to ensure water flows toward the outlet and does not stagnate. 2. Proper Bedding and Backfill- Place the pipe on a bed of clean, coarse drainage gravel (typically 10–50 mm). Surround the entire pipe with this gravel to create a permeable zone. This allows water to move freely through the soil to the pipe. 3. Geotextile Filter Fabric- Wrap the gravel-encased pipe with a high-quality geotextile landscape fabric. This is essential to prevent surrounding soil fines
2026-06-28 18:30:36
0
To see more videos from user @engineerdavidoo, please go to the Tikwm
homepage.
