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Illinois Engineering Field Handbook - Notice 75

United States Department of Agriculture
Natural Resources Conservation Service
2118 W. Park Court, Champaign, IL 61821
Phone: 217/353-6600 Fax: 217/353-6676

May 1, 2014

210 – ENG
Notice IL75

SUBJECT: ENG – National Engineering Handbook (NEH), Part 650, Engineering Field Handbook (EFH)

Purpose. To announce a correction to the Illinois supplement for Chapter 6, Double Wingwall Drop Spillways and to release a set of updated standard drawings.

Effective Date: Upon receipt.

Explanation of Changes. A clerical error has been fixed in the double wingwall drop spillway supplement, which is a companion to drawing IL-ENG-123. This notice distributes an update to IL6-14(12) through IL6-14(38).

This notice also distributes 21 revised standard drawings. Details of the revisions can be found in the attached “Revised Drawings” sheet. The main change is the addition of construction joint specifications to several reinforced concrete drawings.

The Illinois NRCS engineering website will be updated to include the revised supplement at:

The Illinois NRCS engineering website will be revised to reflect the updated drawings at:

Filing Instructions (EFH). Holders of hard copy Engineering Field Handbook binders should:

  1. Discard or archive EFH supplement IL6-14(12) through IL6-14(38) dated May 2013.
  2. Print the attached new EFH supplement IL6-14(12) through IL6-14(38) on green paper, and file after page IL6-14(11).

Filing Instructions (Drawings). Optional. Holders of hardcopy Illinois Engineering Drawing binders should:

  1. Replace Numerical Index dated 4/2014 with the new Numerical Index (attached) dated 5/2014.
  2. Replace Category Index dated 4/2014 with the new Category Index (attached) dated 5/2014.
  3. Print copies of the new and revised drawings, which will be temporarily available on SharePoint until the drawings are posted to the Illinois NRCS engineering website:
  4. Follow instructions on attached distribution listing of new drawings, filing in the IL-ENG Drawing binder.

Any questions regarding this submittal should be directed to the Area Engineer.

State Conservation Engineer


Dist: All IL NRCS and SWCD Employees

This attachment requires Adobe Acrobat Reader to view:

IL75Notice75_Signed.pdf [PDF, 7kb]

2014 May Category Drawing Schedule
2014 May Category dwg schedule.pdf [PDF, 29kb]

2014 May Numerical Drawing Schedule
2014 May Numerical dwg schedule.pdf [PDF, 29kb]

IL75 Ch6 Double Wingwall
IL75 Ch6 DoubleWingwall.pdf [PDF, 1,806kb]

Revised Drawings May 2014
Revised DWG May 2014.pdf [PDF, 7kb]