Advertise_Read Me S-291 IP-3 InRoad Files.doc

Herbert Hoover Dike Culvert Replacement

S-291 (IP-3), InRoads Files

The following is accurate at 01 March 2016 ProjectWise location:

Documents\C&SF\Herbert Hoover Dike Rehabilitation\03-Culvert Rehabilitation\S-292(IP-1), S-290(IP-2), S-291(IP-3) Culvert Reconstruction\070 - Plans\IP-3\ Project IP-3:

This file is used to load surfaces (DTM’s) used, Alignments used, XIM file.

Surfaces Survey:

Location:

Documents\Survey data\C&SF\Herbert Hoover Dike\13-078 Indian Prairie Canal\13-078_PW Files\INROADS\

13-078_USACE.dtm:

This surface provides the topo data of the embankment as well as intake and discharge canals Surfaces:

IP3 Lake Plug North.dtm:

Designed lakeside earthen cofferdam plug. This is built on existing grade (“13-078_USACE.dtm”). top elevation 22.0’ to 23.0’, top width of 10’ with 1:3 lakeside slopes and 1:3 landside slopes to “13-078_USACE.dtm”.

IP3 Lake Plug South.dtm:

Designed lakeside earthen cofferdam plug. This is built on existing grade (“13-078_USACE.dtm”). top elevation 22.0’ to 23.0’, top width of 10’ with 1:3 lakeside slopes and 1:3 landside slopes to “13-078_USACE.dtm”.

IP3 Land Cofferdam.dtm:

This is to be used as an access road around construction site. It has a width of 12’ and 1:3 side slopes to “13-078_USACE.dtm”.

IP3 Excavation.dtm:

This surface design excavates the existing Herbert Hoover embankment surface to elevation 2.7 using 1:3 side slopes. Modeled to intersect “13-078_USACE.dtm” This surface also provides two ramps with 1:4 slopes 16’ wide allowing access into and out of excavated pit. Adjacent to the landside driven pile cofferdam and within the area of excavation there is a bench elevation of 5.0 and bench width of 10’. The side slope begins at 1:4 intersecting the excavation surface or elevation of 2.7, and then slope is steepened to 1:2 after dewatering is completed.

IP-3 Restored.dtm:

Designed to restore the excavated Herbert Hoover embankment after the construction of new S-291 structure. Crest Width is 16’ wide (12’ Lime rock, 2’ sod each side of lime rock) approaching the structure and 49’ wide at the structure (45’ Lime rock, 2’ sod each side of lime rock). Embankments having a maximum slope of 1V:4H. This surface is restored at several parts and times in Phase IV. This will be built in different parts through the Phase IV construction and each part must be approved by COR.

IP-3 Channel Intake

Tie Back Levee.dtm This surface is the final intake channel and the tieback levee. This is used during Phase IV construction. The channel can only be built upon the COR approval and the completion of Phase IV Part V. The channel bottom has a width of 30’ with side slopes that varies and at a max 1:2. The channel bottom elevation is 9.7, at the structure 7.0, upstream the channel ties into existing channel bottom. The tieback levee has a top width of 12’. Land side slope 1:3 to “13-078_USACE.dtm”, lake side slope 1:3 to elevation 20.0. The tieback levee can be built in its entirety during Phase IV Part I with both toes projecting to “13-078_USACE.dtm” with a 1:3 side slope.

IP-3 Land Cofferdam

Phase 4-a.dtm Part “a” is part of Phase IV Part I restoration. It ties into a portion of surface “IP-3 Restored.dtm “. Top of embankment is 12’ wide with a elevation 30.5 with 1:3 side slopes designed to “13-078_USACE.dtm”. This will be used as the temporary embankment prior to and during excavation of intake channel.

IP-3 Land Cofferdam

Phase 4-b.dtm Part “b” is part of Phase IV part II restoration. This ties into a portion of surface “IP-3 Restored.dtm “, “13-078_USACE.dtm”, and “IP-3 Land Cofferdam

Phase 4-a.dtm”. This surface is used after “IP-3 Land Cofferdam Phase 4 a.dtm” is in place and only with COR approval. This also created a temporary intake channel.

IP-2 Land Cofferdam

Phase 4-c.dtm Part “c” land side driven cofferdam.

IP-3 Land Cofferdam

Phase 4-d.dtm Part “d” land side driven cofferdam.

IP-2 Land Cofferdam

Phase 4-e.dtm Part “e” is part of phase IV part III. This is the back fill of the original land side intake channel. It is designed to elevation 19.5 and slopes 1:3 to “13-078_USACE.dtm”. It is also designed to include bedding stone and riprap as part of the drain creating a flush channel side.

IP-3 Land Cofferdam

Phase 4-f.dtm Part “f” is part of phase IV part III. This is the back fill of the original lake side intake channel. It is designed to elevation 20.0 and slopes 1:3 to “13-078_USACE.dtm”.

Phase 4-g.dtm This surface ties parts of Phase IV Part I to "13-078_USACE.dtm” using 1:3 slope.