Webinar instructions will be emailed before the date of the webinar.

Please log into the webinar 15 – 30 minutes before start time.

Thursday, June 17, 2021
10:00 am – 12:00 pm CDT

Presented by Doug Parkhurst
Senior Forensic Engineer – CAT Forensic Services LLC

Why moisture occurs in structures
Case Study #1
– Design errors
– Construction defects
– Deferred maintenance
Common locations where moisture intrusion occurs
Case Study #2
– Site preparation
– Initial construction layout
– Common areas in the building envelope
Damages to structures
Case Study #3:
– Degradation of building materials
– Mold/indoor air quality
Case Study #4
– Historic structures
– Mitigation strategies


 Webinar Instructions

Each webinar session earns continuing education credit and can be registered for individually. All attendees must log-on through their own email – attendees may not watch together if they wish to earn continuing education credit. HalfMoon Education Inc. must be able to prove attendance if either the attendee or HalfMoon Education Inc. is audited.

Certificates of completion will be provided for each webinar attended and will be sent via email in PDF form about five business days after the conclusion of the series.

Webinars are presented via GoToWebinar, an easy-to-use application that can be run on most systems and tablets. Instructions and login information will be provided in an email sent close to the date of the webinar. It is highly recommended that you download, install and test the application before the webinar begins by clicking on the link in the email.

GoToWebinar App requirements:
Windows 7 – 10 or Mac OSX Mavericks (10.9) – macOS Catalina (10.15)

Web Browser:
The two most recent version of the following browsers:
Google Chrome, Mozilla Firefox, Apple Safari, Microsoft Edge
Internet Explorer v11 (or later) with Flash enabled

Internet connection:
 Minimum of 1Mbps       Hardware: 2GB RAM or more

For more information, visit the Support section at


Professional Engineers:
2.0 PDHs

2.0 HSW CE Hours

AIA:  (AIA credits only available for attending live Webinar.)
2.0 LU|HSW

International Code Council:
Pending (Building)

Continuing Education Credit Information
See each course listing for the type and amount of each continuing education credit available. Individual courses for landscape architects, engineers and architects are not subject to pre-approval. HalfMoon Education does not apply for landscape courses in FL, NC, and NJ, unless expressly stated.

HalfMoon Education Certifying Entities
Landscape Architect Continuing Education System
American Institute of Architects Continuing Education System (Sponsor No. J885)
International Code Council (Preferred Provider No. 1232)
American Institute of Certified Planners (AICP)
Boards of Engineering: Florida (No. 0004647), Indiana (License No. CE21700059), Maryland, New Jersey (Approval No. 24GP00000700), North Carolina (No. S-0130), and North Dakota.
Course-by-Course Organizations:
American Planning Association (APA)
International Society of Arboriculture
Society of American Foresters
Association of State Floodplain Managers

HalfMoon Education is deemed a New York-approved continuing education provider for landscape architects, engineers and architects via its registration with the American Institute of Architects Continuing Education System (Regulations of the Commissioner
§79-1.5(i)(2), §68.14(i)(2) and §69.6(i)(2)).


Doug Parkhurst

CAT Forensic Services, LLC

CAT Forensic Services, LLCMr. Parkhurst is a senior forensic engineer for the CAT Forensic Services office located in Little Rock, Arkansas. Mr. Parkhurst holds a B.S. degree in Materials Engineering and an M.S. degree in Civil & Environmental Engineering, and he is a registered professional engineer in Arkansas, Kansas, Oklahoma, Oregon, South Carolina, and Wisconsin. Mr. Parkhurst has performed hundreds of evaluations and investigations with respect to residential, commercial, and agricultural structures, as well as municipal infrastructure components, to document and analyze failures from the effects of wind, vibrations, explosions, earthquakes, floods, foundation failures, moisture intrusion, construction defects, cathodic protection systems, lightning damage, manufacturing defects, corrosion failures, weld failures, building envelope failures, and failures of components and cladding, as well as failures of a variety of materials used in construction of modern and historic structures. Mr. Parkhurst is a member of the American Society of Civil Engineers (ASCE), the Structural Engineers Institute (SEI), and the National Association of Corrosion Engineers (NACE). Mr. Parkhurst consults and provides educational services related to failures of residential, commercial, and agricultural structures.

AIA Info

AIA Provider Statement:

HalfMoon Education Inc. is a registered provider of AIA-approved continuing education under Provider Number J885. All registered AIA/CES Providers must comply with the AIA Standards for Continuing Education Programs. Any questions or concerns about this provider of learning program may be sent to AIA/CES ( or (800) AIA 3837, Option 3).

This learning program is registered with AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product.

AIA continuing education credit has been reviewed and approved by AIA/CES. Learners must complete the entire learning program to receive continuing education credit. AIA continuing education Learning Units earned upon completion of this course will be reported to AIA/CES for AIA members. Certificates of Completion for both AIA members and non-AIA members are available upon request.

Course Title: How to Identify and Mitigate Moisture Intrusion in Structures: Case Studies

Delivery Method: Live Online

Course Description: This course examines case studies of structures damaged by water intrusion. Three cases involve three different causes: design errors, site preparation errors, and degradation of materials. Strategies to mitigate these errors are explored.

Learning Objectives:

Learning Objective 1:
Learners will be able to explain how design errors, construction errors, and deferred maintenance in structures can result in moisture finding ways into buildings.

Learning Objective 2:
Learners will be able to explain how faulty site preparation, poor construction layout problem areas in the building envelop can result in moisture intrusion.

Learning Objective 3:
Learners will be able to explain how building material degradation can allow moisture to enter buildings and lead to mold and poor indoor air quality.

Learning Objective 4:
Learners will be able to evaluate and determine appropriate mitigation strategies to prevent and remedy moisture intrusion issues in structures for the health and safety of occupants and users.

LUs: 2.0                                                                                             LU Type: LU|HSWs.

Prerequisites: Experience with building design and construction

Advance Preparation: None

Program Level: Intermediate

Course Expiration Date:  04/06/2024

Complaint Resolution Policy:

Complaints regarding this course can be emailed to or by calling (715) 835-5900. A HalfMoon Education representative will respond within 72 hours to resolve the complaint, which will include, but not limited to, access to another CE activity at no or reduced cost or a full or partial refund. Each instance will be resolved on a case-by-case situation.

Webinar Price: $100.00