E – 1436 Infrastructure Projects: A Practical Guide to Construction Techniques & Practice
Intended Audience: Civil Engineers
PDH UNITS: 6
How to Design, Construct & Manage Infrastructure Projects
On November 5, 2015, the House passed a $300 billion bill to improve our roads and bridges. This is an excellent opportunity to sharpen your skills and technical understanding of how to design, construct and manage successful infrastructure projects through real-world applications. The media-rich content in this course includes photos and videos of major infrastructure projects, many associated with the post 9/11 reconstruction of lower Manhattan. The PDH course is also narrated by a well-recognized and highly-regarded expert in the construction industry.
Infrastructure Projects Course Outline
- Support of Excavation Basics – Part 1
• Role of support of excavation (SOE) and its impact on the design of the structure.
• 29 CFR – Review of requirements with emphasis on soil characteristics and live loads.
• Impact of existing utilities on each of the support of excavation techniques.
• Trench box.
• Timber Sheeting.
• Soldier pile and lagging.
• Steel sheet piling.
- Support of Excavation Basics – Part 2
• Review special requirements for driving steel sheet piling.
• Video showing the installation of steel sheet piling using a vibratory hammer driving double zee sheets
• Installation of waler for tiebacks. Pros and cons of struts vs tie backs for bracing
• Cross lot bracing. Typical installation of pipe struts and walers.
• Inclined rakers are used as bracing when cross lot bracing is infeasible.
• Constructing the foundation wall accommodating the rakers through the wall formwork.
• Dewatering – Deep well system. Ejector (eductor) system. Well point system.
- Support of Excavation Advanced – Secant Pile Walls
• Secant pile wall. Primary hole, secondary hole.
• Starter wall and special drill rig to insure alignment.
• Impact of utilities.
• Video showing installation of starter holes.
• Video showing installation of secondary holes.
• Example of completed secant pile wall including struts and walers and tiebacks.
• Advantages of tiebacks vs. struts.
• Struts are preloaded with hydraulic jacks supported on end brackets.
- Support of Excavation Advanced – Slurry Walls
• Early use of slurry walls at World Trade Center.
• Definitions – Slurry wall – Diaphragm Wall.
• Video showing construction of slurry walls.
• Explanation of tremie method for placing concrete under water.
• Video showing the tremie method for placing concrete.
• Top down construction using slurry walls as permanent walls.
• Applications of slurry walls for deep excavations.
- Cut and Cover Tunnels – Part 1
• Historic application of cut and cover tunnel technique.
• Modern application of cut and cover technique – Street level view.
• Modern application of cut and cover technique – View below street level.
• Deck beams.
• Careful preparation of an existing live utility manhole.
• Video 1 – Installing deck beams and concrete panels.
• Underpinning existing subway structure.
• Constructing below the existing structure.
• Video 2 – Mezzanine level below the existing structure.
- Cut and Cover Tunnels – Part 2
• Timber vs. concrete decking.
• Video excerpts from the Discovery Channel.
• Rock blasting – blast mats.
• Mixed face tunnel.
• Defining terms and procedures. Mud slab, sand wall.
• Underpinning existing subway structures with drilled piles.
• Single face forms for sand wall.
• Constructing the tunnel structure.
• Restoring existing utilities and backfilling new tunnel
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