{"id":7313,"date":"2023-09-26T19:30:59","date_gmt":"2023-09-26T19:30:59","guid":{"rendered":"http:\/\/dfi.org\/staging\/?page_id=7313"},"modified":"2024-03-27T17:41:37","modified_gmt":"2024-03-27T21:41:37","slug":"tunneling-underground","status":"publish","type":"page","link":"https:\/\/dfi.org\/staging\/communities\/tunneling-underground\/","title":{"rendered":"Tunneling Underground"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"7313\" class=\"elementor elementor-7313\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-384eba8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"384eba8\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e9df0c9\" data-id=\"e9df0c9\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-305e605 elementor-widget elementor-widget-breadcrumbs\" data-id=\"305e605\" data-element_type=\"widget\" data-widget_type=\"breadcrumbs.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<p id=\"breadcrumbs\"><span><span><a href=\"https:\/\/dfi.org\/staging\/\">Home<\/a><\/span><\/span><\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-inner-section elementor-element elementor-element-4d7da51 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4d7da51\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-ad5c433\" data-id=\"ad5c433\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-abb0490 elementor-widget__width-auto elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"abb0490\" data-element_type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" id=\"Layer_1\" x=\"0px\" y=\"0px\" viewBox=\"0 0 64 64\" style=\"enable-background:new 0 0 64 64;\" xml:space=\"preserve\"><g>\t<path d=\"M0,61.3c0-9.7,0-19.3,0-29c0-6.6,1.9-12.5,5.5-18c7-10.3,20.1-15.9,31.9-13.5c13.4,2.7,23.3,12.3,25.8,25.2  c0.4,2.1,0.6,4.2,0.6,6.4c0.1,8.7,0,17.4,0,26.1c0,0.6,0,1.1,0,2.2c-2.4-2.7-4.6-5.1-6.7-7.5c-1.6-1.9-3.7-3.7-4.5-6  c-0.8-2.2-0.2-4.9-0.2-7.4c0-5-3.2-9.2-7.8-10.5c-7-2-13.5,3-13.8,10.5c-0.1,2,0,3.9-0.1,5.9c0,0.6-0.4,1.4-0.9,1.6  c-9.8,4.7-19.6,9.3-29.5,14C0.5,61.3,0.4,61.3,0,61.3z\"><\/path>\t<path d=\"M61.3,63.6c-18.9,0-37.5,0-56.6,0c0.7-0.4,1-0.7,1.4-0.8c8.4-4,16.7-7.9,25.1-11.8c0.8-0.4,1.8-0.6,2.6-0.6  c4.9-0.1,9.7-0.1,14.6,0c0.7,0,1.6,0.2,2,0.7c3.5,3.8,6.9,7.7,10.3,11.6C60.9,62.9,61,63.2,61.3,63.6z\"><\/path><\/g><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e6fb2f0 elementor-widget__width-auto elementor-widget elementor-widget-heading\" data-id=\"e6fb2f0\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Tunneling and Underground<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-9222209 elementor-widget elementor-widget-text-editor\" data-id=\"9222209\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span class=\"ui-provider bke bkf bkg bkh bki bkj bkk bkl bkm bkn bko bkp bkq bkr bks bkt bku bkv bkw bkx bky bkz bla blb blc bld ble blf blg blh bli blj blk bll blm\" dir=\"ltr\">The purpose of the Tunneling and Underground committee is to identify and facilitate the advancement of new methods and technologies for design, construction, inspection, maintenance and operation of tunnels and underground systems.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-inner-section elementor-element elementor-element-956d0b1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"956d0b1\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-8c3d10f\" data-id=\"8c3d10f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-38800ea elementor-mobile-align-justify elementor-align-center elementor-widget__width-auto elementor-widget-mobile__width-inherit elementor-widget elementor-widget-button\" data-id=\"38800ea\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"mailto:techactivities@dfi.org?subject=Tunneling%20and%20Underground\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Message Committee \u27a4<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-623f564 elementor-mobile-align-justify elementor-align-center elementor-widget__width-auto elementor-widget-mobile__width-inherit elementor-widget elementor-widget-button\" data-id=\"623f564\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"http:\/\/www.members.dfi.org\/committee-and-group-rosters\/tunneling-underground\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Committee Roster \u27a4<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e83b85d elementor-mobile-align-justify elementor-align-center elementor-widget__width-auto elementor-widget-mobile__width-inherit elementor-widget elementor-widget-button\" data-id=\"e83b85d\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/www.xcdsystem.com\/dfi\/forms\/index.cfm?ID=i6j0hL2\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Join the Committee \u27a4<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-e08b7fc card-link elementor-hidden-mobile nav-align-right elementor-widget elementor-widget-eael-one-page-nav\" data-id=\"e08b7fc\" data-element_type=\"widget\" data-settings=\"{&quot;heading_alignment&quot;:&quot;right&quot;}\" data-widget_type=\"eael-one-page-nav.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t        <div class=\"eael-one-page-nav-container\">\n            <ul class=\"eael-one-page-nav\" id=\"eael-one-page-nav-e08b7fc\" data-section-id=\"eael-one-page-nav-e08b7fc\" data-top-offset=\"0\" data-scroll-speed=\"700\" data-scroll-wheel=\"off\" data-scroll-touch=\"\" data-scroll-keys=\"off\" data-section-ids=\"[&quot;initiatives&quot;,&quot;news&quot;,&quot;fundamentals&quot;,&quot;links&quot;]\">\n                <li class=\"eael-one-page-nav-item\"><span class=\"eael-nav-dot-tooltip eael-tooltip-arrow\"><span class=\"eael-nav-dot-tooltip-content\">Initiatives<\/span><\/span><a href=\"#\" data-row-id=\"initiatives\"><span class=\"eael-nav-dot-wrap\"><i class=\"eael-nav-dot fas fa-lightbulb\"><\/i><\/span><\/a><\/li><li class=\"eael-one-page-nav-item\"><span class=\"eael-nav-dot-tooltip eael-tooltip-arrow\"><span class=\"eael-nav-dot-tooltip-content\">News &amp; Events<\/span><\/span><a href=\"#\" data-row-id=\"news\"><span class=\"eael-nav-dot-wrap\"><i class=\"eael-nav-dot fas fa-newspaper\"><\/i><\/span><\/a><\/li><li class=\"eael-one-page-nav-item\"><span class=\"eael-nav-dot-tooltip eael-tooltip-arrow\"><span class=\"eael-nav-dot-tooltip-content\">Fundamentals<\/span><\/span><a href=\"#\" data-row-id=\"fundamentals\"><span class=\"eael-nav-dot-wrap\"><i class=\"eael-nav-dot fas fa-school\"><\/i><\/span><\/a><\/li><li class=\"eael-one-page-nav-item\"><span class=\"eael-nav-dot-tooltip eael-tooltip-arrow\"><span class=\"eael-nav-dot-tooltip-content\">Related Links<\/span><\/span><a href=\"#\" data-row-id=\"links\"><span class=\"eael-nav-dot-wrap\"><i class=\"eael-nav-dot fas fa-link\"><\/i><\/span><\/a><\/li>            <\/ul>\n        <\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-1feaae4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1feaae4\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f6bd2a9\" data-id=\"f6bd2a9\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8a8e2ac elementor-widget elementor-widget-heading\" data-id=\"8a8e2ac\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Committee Chairs<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-inner-section elementor-element elementor-element-659c763 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"659c763\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-c7656e5\" data-id=\"c7656e5\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-bf91223 elementor-widget elementor-widget-image\" data-id=\"bf91223\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/dfi.org\/staging\/wp-content\/uploads\/2023\/09\/headshot_Stier.Robert.jpg\" title=\"headshot_Stier.Robert\" alt=\"headshot of stier\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-a8df35a\" data-id=\"a8df35a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f4b311c elementor-widget elementor-widget-heading\" data-id=\"f4b311c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Co-Chair<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-76d8448 remove-elem-bottom elementor-widget elementor-widget-text-editor\" data-id=\"76d8448\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Robert Stier<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-936209b remove-elem-bottom elementor-widget elementor-widget-text-editor\" data-id=\"936209b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Drill Tech Drilling &amp; Shoring, Inc.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0c0bb67 remove-elem-bottom elementor-widget elementor-widget-text-editor\" data-id=\"0c0bb67\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<a style=\"background-color: #ffffff; font-family: Roboto, sans-serif; font-weight: var( --e-global-typography-text-font-weight ); color: #da291c;\" href=\"mailto:bob.stier@drilltechdrilling.com\">bob.stier@drilltechdrilling.com<\/a>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-62b4595 elementor-widget elementor-widget-text-editor\" data-id=\"62b4595\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>In 2018 Bob Stier joined Drill Tech Drilling &amp; Shoring (DTDS) and brought with him with over 35 years of tunneling and underground experience to oversee Drill Tech\u2019s Eastern Region. DTDS is a leader in specialty geotechnical construction industry and performs tunneling operations throughout the United States.\u00a0 In the three years he has been a part of DTDS, he helped procure tunnel projects on both the West and East coasts of the U.S. and has procured and managed Drill Tech\u2019s first foundation projects in the eastern region.\u00a0 Under his guidance Drill Tech procured its largest GC Design-Build Contract for National Parks Service and he is currently managing the project.<\/p><p>Prior to joining DTDS Stier worked as area manager for various tunnel construction companies.\u00a0 He has overseen various tunneling operations including conventional drill-and-blast tunnels, pressurized face operations, and hard rock tunnel boring machine (TBM) and micro tunnel projects. He has both direct field supervision and project management experience on major underground projects across the nation.<\/p><p>Stier graduated from Southern Polytechnic State University (Kennesaw State) in Marietta, Georgia with a bachelor\u2019s of science in civil engineering technology.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-inner-section elementor-element elementor-element-dcd63d6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"dcd63d6\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-89a4646\" data-id=\"89a4646\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f4b6614 elementor-widget elementor-widget-image\" data-id=\"f4b6614\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/dfi.org\/staging\/wp-content\/uploads\/2023\/09\/headshot_Fippin.Renee_.jpg\" title=\"headshot_Fippin.Renee\" alt=\"headshot of fippin\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-636b1c3\" data-id=\"636b1c3\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8c52423 elementor-widget elementor-widget-heading\" data-id=\"8c52423\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Co-Chair<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cc142b1 remove-elem-bottom elementor-widget elementor-widget-text-editor\" data-id=\"cc142b1\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Renee Fippin, P.E., G.E.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7312d03 remove-elem-bottom elementor-widget elementor-widget-text-editor\" data-id=\"7312d03\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Delve Underground<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-790421c remove-elem-bottom elementor-widget elementor-widget-text-editor\" data-id=\"790421c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<a style=\"background-color: #ffffff; font-family: Roboto, sans-serif; font-weight: var( --e-global-typography-text-font-weight ); color: #da291c;\" href=\"mailto:fippin@delveunderground.com\">fippin@delveunderground.com<\/a>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2cf6f28 elementor-widget elementor-widget-text-editor\" data-id=\"2cf6f28\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Ren\u00e9e L. Fippin, P.E., G.E., is a principal engineer at Delve Underground in the Walnut Creek, California, office. She is a registered Geotechnical Engineer in California, and a registered Professional Engineer in California, Massachusetts, North Dakota and New York. She earned her bachelor\u2019s degree in engineering physics from Miami University.<\/p><p>Fippin\u2019s expertise spans both geotechnical and structural engineering, including a thorough background in the design of shafts and tunnels, and with investigation and evaluation of new tunnels as well as existing tunnels for rehabilitation. Her combined detailed design and management experience, along with geotechnical and structural background, have given her unique insights to understand how to efficiently plan a project from initial to final design phases.<\/p><p>She is on the board of directors for Delve Underground and has published numerous papers for the Underground Construction Association of the Society of Mining, Metallurgy &amp; Exploration. Her most recent paper is \u201cFlood Resilience in San Francisco.\u201d<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-7fdccf5 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7fdccf5\" data-element_type=\"section\" id=\"initiatives\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f1d2721\" data-id=\"f1d2721\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5b8ddfa elementor-widget elementor-widget-heading\" data-id=\"5b8ddfa\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Committee Initiatives<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ab484ce elementor-widget elementor-widget-text-editor\" data-id=\"ab484ce\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Browse our initiatives, both complete and ongoing.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-be1add3 elementor-mobile-align-justify elementor-align-left elementor-widget elementor-widget-button\" data-id=\"be1add3\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"http:\/\/dfi.org\/staging\/communities\/tunneling-underground\/initiatives\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">View Initiatives \u27a4<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-e489525 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e489525\" data-element_type=\"section\" id=\"news\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-901f4e4\" data-id=\"901f4e4\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-de03f02 elementor-widget elementor-widget-heading\" data-id=\"de03f02\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Committee News &amp; Events<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0fa060a center-list elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"0fa060a\" data-element_type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.nxtbook.com\/dfi\/DEEP-FOUNDATIONS\/november-december-2023\/index.php#\/p\/74\" target=\"_blank\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-newspaper\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Nov-Dec 2023 Committee Chair's Report in Deep Foundations Magazine<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/dfi.org\/staging\/2021\/10\/22\/dfi-announces-robert-stier-as-new-co-chair-of-tunneling-and-underground-committee\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-newspaper\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">DFI Announces Robert Stier as New Co-chair of Tunneling and Underground Committee<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-64ee908 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"64ee908\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-11e4d41\" data-id=\"11e4d41\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-cebcaf7 elementor-widget elementor-widget-heading\" data-id=\"cebcaf7\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Fundamentals<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2d46bde elementor-widget elementor-widget-text-editor\" data-id=\"2d46bde\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Our fundamentals lay the deep foundations for all our work.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-160d95e center-m two-col-li elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"160d95e\" data-element_type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/smemi.personifycloud.com\/PersonifyEbusiness\/Store\/Product-Details\/productId\/1138207\" target=\"_blank\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-external-link-alt\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">History of Tunneling in the United States<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/geotechnology.com\/wp-content\/uploads\/2011\/10\/GeoConstructabilityReport201109.pdf\" target=\"_blank\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-file-pdf\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">GeoConstructability \u2013 An Owner\u2019s Guide to Obtaining Essential Geotechnical Information for Construction<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-24ac162 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"24ac162\" data-element_type=\"section\" id=\"links\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-96d6a46\" data-id=\"96d6a46\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-dad07e2 elementor-widget elementor-widget-heading\" data-id=\"dad07e2\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Related Links<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7a867da no-marg elementor-widget elementor-widget-text-editor\" data-id=\"7a867da\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li><a class=\"fui-Link ___10kug0w f3rmtva f1ewtqcl fyind8e f1k6fduh f1w7gpdv fk6fouc fjoy568 figsok6 f1hu3pq6 f11qmguv f19f4twv f1tyq0we f1g0x7ka fhxju0i f1qch9an f1cnd47f fqv5qza f1vmzxwi f1o700av f13mvf36 f1cmlufx f9n3di6 f1ids18y f1tx3yz7 f1deo86v f1eh06m1 f1iescvh fhgqx19 f1olyrje f1p93eir f1nev41a f1h8hb77 f1lqvz6u f10aw75t fsle3fq f17ae5zn\" title=\"https:\/\/www.mytrb.org\/onlinedirectory\/committee\/details\/5116\" href=\"https:\/\/www.mytrb.org\/OnlineDirectory\/Committee\/Details\/5116\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Link TRB Committee on Tunnels and Underground Structures\">TRB Committee on Tunnels and Underground Structures<\/a><\/li><li><a class=\"fui-Link ___10kug0w f3rmtva f1ewtqcl fyind8e f1k6fduh f1w7gpdv fk6fouc fjoy568 figsok6 f1hu3pq6 f11qmguv f19f4twv f1tyq0we f1g0x7ka fhxju0i f1qch9an f1cnd47f fqv5qza f1vmzxwi f1o700av f13mvf36 f1cmlufx f9n3di6 f1ids18y f1tx3yz7 f1deo86v f1eh06m1 f1iescvh fhgqx19 f1olyrje f1p93eir f1nev41a f1h8hb77 f1lqvz6u f10aw75t fsle3fq f17ae5zn\" title=\"https:\/\/www.geoinstitute.org\/committees\/technical-committees\/underground-engineering-and-construction\" href=\"https:\/\/www.geoinstitute.org\/committees\/technical-committees\/underground-engineering-and-construction\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Link ASCE Geo-Institute Underground Engineering and Construction Committee\">ASCE Geo-Institute Underground Engineering and Construction Committee<\/a><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Tunneling and Underground The purpose of the Tunneling and Underground committee is to identify and facilitate the advancement of new methods and technologies for design, construction, inspection, maintenance and operation of tunnels and underground systems. Message Committee \u27a4 Committee Roster \u27a4 Join the Committee \u27a4 Initiatives News &amp; Events Fundamentals Related Links Committee Chairs Co-Chair [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":77,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.5 (Yoast SEO v24.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Tunneling Underground - Deep Foundations Institute<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dfi.org\/staging\/communities\/tunneling-underground\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Tunneling Underground\" \/>\n<meta property=\"og:description\" content=\"Tunneling and Underground The purpose of the Tunneling and Underground committee is to identify and facilitate the advancement of new methods and technologies for design, construction, inspection, maintenance and operation of tunnels and underground systems. Message Committee \u27a4 Committee Roster \u27a4 Join the Committee \u27a4 Initiatives News &amp; Events Fundamentals Related Links Committee Chairs Co-Chair [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dfi.org\/staging\/communities\/tunneling-underground\/\" \/>\n<meta property=\"og:site_name\" content=\"Deep Foundations Institute\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-27T21:41:37+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/dfi.org\/staging\/wp-content\/uploads\/elementor\/thumbs\/headshot_Stier.Robert-qclnb6evl69pmz0gdycjgq6ve7cb5bdmbh19f5jluw.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/dfi.org\/staging\/communities\/tunneling-underground\/\",\"url\":\"https:\/\/dfi.org\/staging\/communities\/tunneling-underground\/\",\"name\":\"Tunneling Underground - Deep Foundations Institute\",\"isPartOf\":{\"@id\":\"https:\/\/dfi.org\/staging\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/dfi.org\/staging\/communities\/tunneling-underground\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/dfi.org\/staging\/communities\/tunneling-underground\/#primaryimage\"},\"thumbnailUrl\":\"http:\/\/dfi.org\/staging\/wp-content\/uploads\/elementor\/thumbs\/headshot_Stier.Robert-qclnb6evl69pmz0gdycjgq6ve7cb5bdmbh19f5jluw.jpg\",\"datePublished\":\"2023-09-26T19:30:59+00:00\",\"dateModified\":\"2024-03-27T21:41:37+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/dfi.org\/staging\/communities\/tunneling-underground\/#breadcrumb\"},\"inLanguage\":\"en\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/dfi.org\/staging\/communities\/tunneling-underground\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en\",\"@id\":\"https:\/\/dfi.org\/staging\/communities\/tunneling-underground\/#primaryimage\",\"url\":\"http:\/\/dfi.org\/staging\/wp-content\/uploads\/elementor\/thumbs\/headshot_Stier.Robert-qclnb6evl69pmz0gdycjgq6ve7cb5bdmbh19f5jluw.jpg\",\"contentUrl\":\"http:\/\/dfi.org\/staging\/wp-content\/uploads\/elementor\/thumbs\/headshot_Stier.Robert-qclnb6evl69pmz0gdycjgq6ve7cb5bdmbh19f5jluw.jpg\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/dfi.org\/staging\/communities\/tunneling-underground\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/dfi.org\/staging\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Communities\",\"item\":\"https:\/\/dfi.org\/staging\/communities\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Tunneling Underground\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/dfi.org\/staging\/#website\",\"url\":\"https:\/\/dfi.org\/staging\/\",\"name\":\"Deep Foundations Institute\",\"description\":\"Finding Common Ground\",\"publisher\":{\"@id\":\"https:\/\/dfi.org\/staging\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/dfi.org\/staging\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/dfi.org\/staging\/#organization\",\"name\":\"Deep Foundations Institute\",\"url\":\"https:\/\/dfi.org\/staging\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en\",\"@id\":\"https:\/\/dfi.org\/staging\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/dfi.org\/staging\/wp-content\/uploads\/2023\/08\/cropped-logo_DFI_noTag_color_png.png\",\"contentUrl\":\"https:\/\/dfi.org\/staging\/wp-content\/uploads\/2023\/08\/cropped-logo_DFI_noTag_color_png.png\",\"width\":300,\"height\":258,\"caption\":\"Deep Foundations Institute\"},\"image\":{\"@id\":\"https:\/\/dfi.org\/staging\/#\/schema\/logo\/image\/\"}}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Tunneling Underground - Deep Foundations Institute","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/dfi.org\/staging\/communities\/tunneling-underground\/","og_locale":"en_US","og_type":"article","og_title":"Tunneling Underground","og_description":"Tunneling and Underground The purpose of the Tunneling and Underground committee is to identify and facilitate the advancement of new methods and technologies for design, construction, inspection, maintenance and operation of tunnels and underground systems. Message Committee \u27a4 Committee Roster \u27a4 Join the Committee \u27a4 Initiatives News &amp; Events Fundamentals Related Links Committee Chairs Co-Chair [&hellip;]","og_url":"https:\/\/dfi.org\/staging\/communities\/tunneling-underground\/","og_site_name":"Deep Foundations Institute","article_modified_time":"2024-03-27T21:41:37+00:00","og_image":[{"url":"http:\/\/dfi.org\/staging\/wp-content\/uploads\/elementor\/thumbs\/headshot_Stier.Robert-qclnb6evl69pmz0gdycjgq6ve7cb5bdmbh19f5jluw.jpg","type":"","width":"","height":""}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/dfi.org\/staging\/communities\/tunneling-underground\/","url":"https:\/\/dfi.org\/staging\/communities\/tunneling-underground\/","name":"Tunneling Underground - Deep Foundations Institute","isPartOf":{"@id":"https:\/\/dfi.org\/staging\/#website"},"primaryImageOfPage":{"@id":"https:\/\/dfi.org\/staging\/communities\/tunneling-underground\/#primaryimage"},"image":{"@id":"https:\/\/dfi.org\/staging\/communities\/tunneling-underground\/#primaryimage"},"thumbnailUrl":"http:\/\/dfi.org\/staging\/wp-content\/uploads\/elementor\/thumbs\/headshot_Stier.Robert-qclnb6evl69pmz0gdycjgq6ve7cb5bdmbh19f5jluw.jpg","datePublished":"2023-09-26T19:30:59+00:00","dateModified":"2024-03-27T21:41:37+00:00","breadcrumb":{"@id":"https:\/\/dfi.org\/staging\/communities\/tunneling-underground\/#breadcrumb"},"inLanguage":"en","potentialAction":[{"@type":"ReadAction","target":["https:\/\/dfi.org\/staging\/communities\/tunneling-underground\/"]}]},{"@type":"ImageObject","inLanguage":"en","@id":"https:\/\/dfi.org\/staging\/communities\/tunneling-underground\/#primaryimage","url":"http:\/\/dfi.org\/staging\/wp-content\/uploads\/elementor\/thumbs\/headshot_Stier.Robert-qclnb6evl69pmz0gdycjgq6ve7cb5bdmbh19f5jluw.jpg","contentUrl":"http:\/\/dfi.org\/staging\/wp-content\/uploads\/elementor\/thumbs\/headshot_Stier.Robert-qclnb6evl69pmz0gdycjgq6ve7cb5bdmbh19f5jluw.jpg"},{"@type":"BreadcrumbList","@id":"https:\/\/dfi.org\/staging\/communities\/tunneling-underground\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/dfi.org\/staging\/"},{"@type":"ListItem","position":2,"name":"Communities","item":"https:\/\/dfi.org\/staging\/communities\/"},{"@type":"ListItem","position":3,"name":"Tunneling Underground"}]},{"@type":"WebSite","@id":"https:\/\/dfi.org\/staging\/#website","url":"https:\/\/dfi.org\/staging\/","name":"Deep Foundations Institute","description":"Finding Common Ground","publisher":{"@id":"https:\/\/dfi.org\/staging\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/dfi.org\/staging\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en"},{"@type":"Organization","@id":"https:\/\/dfi.org\/staging\/#organization","name":"Deep Foundations Institute","url":"https:\/\/dfi.org\/staging\/","logo":{"@type":"ImageObject","inLanguage":"en","@id":"https:\/\/dfi.org\/staging\/#\/schema\/logo\/image\/","url":"https:\/\/dfi.org\/staging\/wp-content\/uploads\/2023\/08\/cropped-logo_DFI_noTag_color_png.png","contentUrl":"https:\/\/dfi.org\/staging\/wp-content\/uploads\/2023\/08\/cropped-logo_DFI_noTag_color_png.png","width":300,"height":258,"caption":"Deep Foundations Institute"},"image":{"@id":"https:\/\/dfi.org\/staging\/#\/schema\/logo\/image\/"}}]}},"rttpg_featured_image_url":null,"rttpg_author":{"display_name":"admin","author_link":"https:\/\/dfi.org\/staging\/author\/admin\/"},"rttpg_comment":0,"rttpg_category":null,"rttpg_excerpt":"Tunneling and Underground The purpose of the Tunneling and Underground committee is to identify and facilitate the advancement of new methods and technologies for design, construction, inspection, maintenance and operation of tunnels and underground systems. Message Committee \u27a4 Committee Roster \u27a4 Join the Committee \u27a4 Initiatives News &amp; Events Fundamentals Related Links Committee Chairs Co-Chair&hellip;","_links":{"self":[{"href":"https:\/\/dfi.org\/staging\/wp-json\/wp\/v2\/pages\/7313"}],"collection":[{"href":"https:\/\/dfi.org\/staging\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/dfi.org\/staging\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/dfi.org\/staging\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dfi.org\/staging\/wp-json\/wp\/v2\/comments?post=7313"}],"version-history":[{"count":47,"href":"https:\/\/dfi.org\/staging\/wp-json\/wp\/v2\/pages\/7313\/revisions"}],"predecessor-version":[{"id":17132,"href":"https:\/\/dfi.org\/staging\/wp-json\/wp\/v2\/pages\/7313\/revisions\/17132"}],"up":[{"embeddable":true,"href":"https:\/\/dfi.org\/staging\/wp-json\/wp\/v2\/pages\/77"}],"wp:attachment":[{"href":"https:\/\/dfi.org\/staging\/wp-json\/wp\/v2\/media?parent=7313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}