Locale : North America (English)
X
Create document Page
added
Remove
page
Add
page
Review document
/
Page Added
Collected
Pages
Create

Handling the pressure

Excavating the volcanic rock required controlled detonation without disturbing nearby homes.

Opportunity

Transients are one of the most common, yet least understood, challenges encountered in water distribution systems. Changes in the operation of valves, pumps, or other infrastructure may cause a pressure wave that contributes to pipe breaks, pump or valve failures, or other problems.

Hydraulic modeling revealed that new water facilities could create a risk of transients for three existing pipelines that cross Nob Hill in San Diego.

Solution

We provided geotechnical engineering and designed a new tunnel, pipelines, and an access road traversing steep terrain. Installing a replacement pipeline was challenging, since excavation of the volcanic rock required controlled detonation without disturbing nearby homes.

Outcome

Our contribution allowed the construction of a hard-rock tunnel 800 feet (244 meters) long and 12 feet (3.7 meters) in diameter, and the installation of a welded-steel tunnel containing three water pipelines, without disturbing nearby residents or the nearby Miramar Dam.

icon-arrow-down-sml icon-arrow-left-lrg icon-arrow-left-sml icon-arrow-right-lrg icon-arrow-right-sml icon-arrow-up-sml icon-champions icon-close icon-download icon-education icon-email icon-grid-view icon-language icon-link-to icon-list-view icon-location icon-login-register icon-minus icon-more icon-phone icon-plus icon-recently-viewed icon-search icon hash key-facts-corner-sash quote-underline social-icon-facebook social-icon-googleplus social-icon-linkedin social-icon-twitter social-share-icon-facebook social-share-icon-facebook social-share-icon-googleplus social-share-icon-googleplus social-share-icon-instagram social-share-icon-instagram social-share-icon-linkedin social-share-icon-linkedin social-share-icon-twitter social-share-icon-twitter social-share-icon-youtube social-share-icon-youtube sina-weibo MM-Shape01-Quote-Views MM-Shape03-Quote-Locations MM-Shape05-Quote-Projects MM-Shape12-Quote-Sectors MM-Shape13-Quote-Expertise MM-Shape14-Quote-About-Us MM-Shape14-Quote-Careers checkmark icon-expand-view icon-apply-now menu sphere icon-cookies icon-legal icon-registered-companies target rotate-screen video-replay-flat video-replay audio-mute audio-play