What is the number of eight-character outlets?

Question 1: What is the quota of brick outlet?

Question 2: How much is the splayed socket? Stone: about 16000

Question 3: Volume calculation of splayed outlet: the right angle between culvert and route is 120 (α = 90- 120 =-30), and the subgrade slope m0= 1.5 (i.e. 1: 1.5). The section height of Hebei end is h=70cm, the rotation angle of the front edge line to the culvert axis is β =-20 (negative counterclockwise around point O), and the slope of the culvert axis is i=2%. The relevant calculation is as follows: 1. The wall is calculated by considering the slope I of flowing water: m = m0/( 1 m0i/cos α), the upstream is positive and the downstream is negative, and m =1.5/(1+1.5 * 2). 2. Culvert axis length: l = (h-h) m/cos α = (4.79-0.7) *1.4498/cos 30 = 6.847m; 3. The width of the top wall of the portal section: c = c0/cos (β-α) = 0.40/cos (-20+30) = 0.406m; 4. Slope ratio of the back of the cross-section wall of the portal: n=[n0+signβsin(β-α)/m]cos(β-α), where sign is the symbolic function sign β = sign (-20) =- 1, and n = [4-sin (-20+30). n ' =[4-SIN(-20+30)/ 1.5]COS(-20+30)= 3.82525。 Width of bottom of hole section: a = c+h/n = 0.406+4.79/3.8259.1000000000605 6. Hebei tail section width: b = c+h/n = 0.406+0.70/3.8213 = 0.589m, (n' → 0.588m); 7. Calculation of wall volume (take an ultra-thin dz section parallel to the cross section of the hole for analysis, such as the shadow part of the facade), and its volume is dV≈[(c+x)y/2]dz, where x=c+y/n and dz=mdy: dV≈[y2/2/n+cy]mdy. Y integrates from H to H as follows: V = 0.5 [(H3-H3)/3/N+C (H2-H2)] MV = 0.5 * [(4.793-0.73)/3/3.8213+0.406 * (4.796).

Question 4: What is the function of the splayed water outlet?

Question 5: Kneeling type: the difference between straight outlet and splayed outlet In order to ensure smooth water inflow, the included angle between the center line of the pipeline and the center line of the river should not be greater than 30 degrees. View original post >>

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Question 6: What table is used for the hidden information of retaining wall at the outlet of mortar block stone splayed pipeline, the mixture ratio of mortar block stone and the construction scheme? Evaluation of inspection lot during construction. Acceptance data of supervision department.

Question 7: Kneeling posture: The difference between straight outlet and splayed outlet is simple and common.

Question 8: The size of the splayed mouth of the rainwater outlet is 4. 1. 10. When the outlet of the drainage channel is supported by water level, facilities such as tidal sluice, gate or pumping station should be set according to the regional importance and the consequences caused by accumulated water. Note: 4. 1. 10 Provisions on the outlet of pipes and canals. The design water level at the outlet of the pipe canal should be higher than or equal to the design flood level of the discharged water body. When it is lower than, appropriate engineering measures should be taken. ...

Question 9: Tips for the stone eight-character socket.

Eight-shaped export Baidu Baidu Library has:

wenku.baidu/view/9748c390daef5ef7ba0d3cbb

For your reference!

Question 10: How to show the splayed wing wall type with small flow resistance, small engineering quantity and wide application on the splayed wall hole map?

The straight wall type, also called end wall type, has a simple structure and is suitable for small-aperture culverts. Conical slope protection is generally built on both sides of the entrance to protect the fill outside the embankment end wall from scouring.

The details are as follows: The concept of culvert is a small drainage and flood discharge structure across subgrade or embankment.