Office of Capital Projects FAQ's

Whose responsibility is it to repair or replace sidewalks?

Property owners are responsible for repair and replacement, but may receive City assistance. The City may pay for a portion of the cost, and will remove City tree roots, if necessary.

For information on sidewalk programs, see the Bureau of Sidewalks or call 216.664.2474.

For information on sidewalk permits and repairs, see Bureau of Sidewalks Fact Sheet or call 216.664.2747.

For further information on tree roots, see Urban Forestry or call 216.664.3104.

From:
Mayor's Office of Capital Projects
Category:
Streets and Transportation

Last updated: 04/10/2015 - 6:32pm

Q1063
What is flowable fill?

Flowable fill is a self-compacting, cementous material used as backfill in place of compacted granular material. It is made from cement, fly ash, fine aggregate (sand) and water.

From:
Division of Engineering & Construction
Category:
Streets and Transportation

Last updated: 03/25/2015 - 2:04pm

Q1324
How will the use of flowable fill affect backfilling trenches in excess of twenty-five feet?

The practice now used is to backfill with material as the trench box is pulled forward. Flowable fill can be used by using a three sided trench box.

From:
Division of Engineering & Construction
Category:
Streets and Transportation

Last updated: 03/25/2015 - 2:03pm

Q1325
Can flowable fill be installed in a trench the same way as granular material is?

Probably not because of the characteristics and nature of flowable fill.

Caution must be used to make sure material does not run into the trench.

This can be done by setting a bulkhead in front of the pipe and placing the material. This is the same method used at the end of the day when work has ended.

From:
Division of Engineering & Construction
Category:
Streets and Transportation

Last updated: 03/25/2015 - 2:02pm

Q1326
Will flowable fill seep into open joints, around parts and underground vaults?

Open joints and holes in vaults should be bulkheaded or wrapped with visqueen to prevent seepage. Bolts and other mechanical parts should be wrapped to ease access for future repair.

From:
Division of Engineering & Construction
Category:
Streets and Transportation

Last updated: 03/25/2015 - 2:02pm

Q1327
Box extensions have a sloppy fit and tend to shift during backfill. What can be done to prevent the material from covering the operating nut and bypass piping?

Visqueen should be used to isolate the operating nut and bypass pipe before the backfilling begins.

From:
Division of Engineering & Construction
Category:
Streets and Transportation

Last updated: 03/25/2015 - 2:05pm

Q1328
Large excavations with valve boxes in the middle require a way to stabilize the extension while adding material to keep it lined up. What type of slump is required?

Flowable fill does not have to be ordered at a high slump (8"-10"). A lower slump could be used to stabilize the extension. After that, the slump can be increased.

From:
Division of Engineering & Construction
Category:
Streets and Transportation

Last updated: 03/25/2015 - 2:06pm

Q1329
When using flowable fill, if utility ducts are found, can the material be changed?

Yes, however, it may be necessary. Example: If it is used for water lines and fiber optic cables are found, the contractor does not have to change to a bedding material because flowable fill will provide all the support needed.

From:
Division of Engineering & Construction
Category:
Streets and Transportation

Last updated: 03/25/2015 - 2:02pm

Q1330
If wrapping utility pipes is necessary, who assumes this responsibility?

The contractor should notify the owner of the utility to wrap the pipe.

From:
Division of Engineering & Construction
Category:
Streets and Transportation

Last updated: 03/25/2015 - 2:05pm

Q1331
What happens if, during construction, something like trolley tracks are found at the site?

Flowable fill is used under trolley tracks to fill voids created by tunneling. It is more compact than granular backfill.

From:
Division of Engineering & Construction
Category:
Streets and Transportation

Last updated: 03/25/2015 - 2:04pm

Q1332

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