Value Engineering - Civil Engineering, Structural Design - Ifland Engineers

 

Value Engineering

One of the aspects of the type of engineering services that Ifland Engineers, Inc. strives to include in every project is that of “value engineering”.  This means to design the project to meet the code requirements with practical application but not to “over engineer” that drives up the construction costs. 

As an example, a major national home builder engaged an engineering firm to prepare a tentative map and preliminary improvement plans for a 128 lot subdivision.  The City approved the tentative map at which time the builder came to us and hired us to complete the final design for construction.

As we studied the preliminary drawings, we noticed that there was a significant volume of soil to be hauled off-site, oversized pipelines for sanitary sewers and storm drains, and many more manholes and catch-basins than were needed.  When we completed our re-design of these items, we compared the construction quantities and showed our client the cost savings of applying “value engineering”.

The cost savings were as follows:

 

 

Preliminary Plans

Final Plans

Difference

Unit Cost

Totals

Grading

43,000 C.Y. Export

0 Export

-43,000 C.Y.

$8.00

-$344,000

Water Main

 

 

 

 

 

8”

4700 L.F.

3600 L.F.

- 1100 L.F.

$40.00

-$44,000

4”

0

1100L.F.

+ 1100 L.F.

$30.00

+$33,000

Sewer Main

 

 

 

 

 

8”

4728 L.F.

3698 L.F.

-1030 L.F.

$38.00

-$39,140

6”

0

1030 L.F.

+1030 L.F.

$32.00

+$32,960

Sanitary Sewer Manhole

27

22

-5

$2,800

-$14,000

Storm Drain

Manhole

26

13

-13

$3,000

-$39,000

Catch Basins

36

28

-8

$2,000

-$16,000

Storm Drains

 

 

 

 

 

12”

0

960 L.F.

+960

$40.00

+$38,400

15”

1860 L.F.

500 L.F.

-1360 L.F.

$43.00

-$58,480

18”

3220 L.F.

1775 L.F..

-1445 L.F

$50.00

-$72,250

24”

150 L.F.

0 L.F.

-150 L.F.

$55.00

-$8,750

30”

0

75 L.F.

+75 L.F.

$60.00

+$4,500

 

 

 

TOTAL SAVINGS:

 

-$526,760

 

 

Had our client constructed the project as the first engineering firm had designed, the cost would have been over $500,000 more for the 128 lots, or $3,900 per lot.

 

VALUE ENGINEERING PAYS

 

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