My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
PERMFILE102971
DRMS
>
Back File Migration
>
Permit File
>
100000
>
PERMFILE102971
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
8/24/2016 9:56:40 PM
Creation date
11/24/2007 9:29:53 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1982057A
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Doc Name
STOCK TANK DESIGN
Section_Exhibit Name
TAB 13 ATTACHMENT 13-11
Media Type
D
Archive
Yes
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
20
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
View images
View plain text
STATE OF COLORADO <br />DIVISION OF WATER RESOURCES <br />OFFICE OF STATE ENGINEER <br />SPECIFICATIONS TO GOVERN THE CONSTRUCTION OF A LIVESTOCK WATER TANK <br />Preparation of Foundstioa for Dam--All vegetable matter of every description, including roots to a depth of two <br />feet, shall be removed from the entire area upon which the dant wiL rest, together with boggy or unstable materials <br />and deposited outride the toes of the dam. The banks of the stream channel shall be dressed to a slope of about l[fi:l. <br />A bonding trench, with sloping sides and a bottom width of not less than 5 teat and depth of 4 feet, shall then be <br />excavated beneath the center line of the dam the full length thereof, which trench shall be refilled with the most imper. <br />vious materials available. The foundation of the dam shall then be lightly plowed lengthwise of the dam, to provide <br />proper contact between the foundation and the dam embankment. <br />Placing Df Dam Embaal[menL--The materials shall be placed in the bonding wench and in the embankment of the <br />dam in layers not exceeding 6 inches in thickness, after which each layer shall be thoroughly compacted by a heavily <br />loaded disc cultivator, a corrugated or sheep's foot roller, the treads of a caterpillar or trucks, or by livestock used in the <br />construction. During the construction period, the top of the embankment shall be maintained as a horizontal plane the <br />full width and length thereof, and no side dumping of materials shall be permitted. The materials shall at all times <br />contain sufficient moisture to provide proper compaction. Puddling of material with water shall not be permitted. <br />No frozen material or large clods or stones shall be incorporated in the dam. The upstream face o! the dam shall be <br />constructed with a slope not steeper than 2if2:1, and the downstream face on a slope not steeper than 2:1. The crest or <br />top of the finished dam shall be not less than 8 feet in width. <br />The upstream two-thirds of the dam shall be constructed of the most impervious materials, such as clay loam, or a <br />mixture of clay and sand, and the downstream one-third of more pervious material, such as sand or gravel. The up- <br />stream face of the dam shall be adequately protected against wave action by stone riprap, or other suitable materials <br />when required. <br />Outlet-Should the stale engineer so require, there shall be located beneath the dam an outlet pipe not less than 8 <br />inches in diameter, equipped with a control valve attached to the upstream end of the pipe, together with suitable <br />mechanism for operating the valve. Such outlet pipe shall be provided with cutoff collars. The pipe shall be placed m a <br />trench bottomed in stable formation, and shall be completely surrounded with well compacted impervious materials. <br />Spltlway-For the protection of the dam, an adequate spillway shall be constructed around one or both ends of the <br />dam, of sufficient width to provide a capacity to carry the enure discharge from the drainage basin above the dam <br />during periods o1 unusual runoff. The spillway shall be located in stable formations not easily eroded, and shall extend <br />to a point well downstream from the dam. The following table shall be rued to determine the necessary width of spill- <br />way to meet the above requiremenu. The top of the dam at all poinu shall be not less than 4 feet above the bottom of <br />the spillway. <br />The following table shows the widths of spillways for corresponding drainage areas with an allowance of a mini- <br />mum freeboard between the maximum high water line and top of dam, of 2.3 feet, and maximum velocities of 3.5 feet <br />per second of time. <br />AREAS OF LOW RAINFALL INTENSITY AREAS OF HIGH RAINFALL 7NTE*ISITY <br />AREA OF REQUIRED WIDTX OF AREA OF RLQUIR[D WIDTX OF AR[A OF REQUIRED WIDTH OF <br />DRAINAGE BASIN SPILLWAY"W"AT DRAINAGE BASI N SPILLWAY"W"AT DaA1NAGE BASIN SPILLWAY"W"AT <br />ABOVE DAM NARROWEST POINT ABOVE DAM NARROWEST POINT ABOVE DAM NARROWEST POINT <br />IN ACRES IN FEET In ACRES IN FEET IN ACRES IN FEET <br />20 8 20 8 100 76 <br />10 9 /0 9 150 81 <br />60 11 60 11 500 50 <br />BO SI 80 16 550 96 <br />lU0 ld 100 b00 105 <br />110 21 120 26 700 117 <br />160 25 110 30 800 129 <br />220 29 160 31 900 110 <br />260 33 160 Si 1000 150 <br />300 35 200 /3 1100 160 <br />350 36 220 16 7200 169 <br />100 /2 210 50 1300 176 <br />150 1/ 260 53 I/00 167 <br />500 16 280 57 1500 196 <br />600 51 300 60 1600 203 <br />700 55 320 63 Ii00 212 <br />F00 59 310 66 IB00 1I9 <br />900 fit 360 70 1900 225 <br />]000 66 380 77 2000 233 <br />ALL AREAS EAST OF THE CONTINENTAL DIVIDE BELOW AN ELEVATION OF 7000 FEET, ARE CONSID- <br />ERED AS BEING IN THE HIGH RAINFALL INTENSITY ZONE. <br />The above spillway widths ma.• be reduced at a point 50 feet below intake, by 25 per cent, where the spillway is <br />• located tht full length thereof in hard clay or shale, and b5' 50 per cent when located in hard rock formations, if the <br />slope or grade of the bottom is increased accordingly. The grade !or clay and shale formations should be 0.30 foot per <br />100 feet, and for rock formations 0.90 foot per 100 feet. The width of the entrance to the spillway must in all cases be <br />I one-third wider than shown in the table, and Lhe bottom should slope from the lower end of the funnel section, toward <br />the reservoir 1.0 foot in the distance of 50 feet, and the slope downstream should be 0.25 foot in a distance of ]00 feet. <br />Bortow Pits--Piss, from which materials are taken to build the dam, shall be cleared of all vegetable matter, and <br />no material shall be borrowed within a distance of 50 feet of any part of the dam. haterials excavated from the spill- <br />way, when suitable, may be used in building the dam. <br />
The URL can be used to link to this page
Your browser does not support the video tag.