**1. Introduction**

In this chapter, the structural design of a typical single-family residence using CLT panelized construction is presented. The information presented in this chapter was largely adapted from a recent CLT research project conducted by the authors for the Pennsylvania Housing Research Center (PHRC) in 2021 [1]. CLT is currently more commonly utilized for the construction of multi-family residential and commercial structures; however, some examples of CLT (single-family) homes are gradually becoming available [2]. Two-dimensional flat CLT panel elements make it possible for architects to explore unique, attractive structure forms and floorplans not easily

constructed using light-frame methods. Structural engineers can leverage the stiffness and two-way spanning capabilities of the panels to tackle difficult-to-solve design challenges presented by modern-style structures. Although it is largely costprohibitive to construct conventional single-family homes using CLT, as production methods mature and availability of design guidance increases, the opportunities may expand. It benefits structural engineers involved in residential construction to be aware of the potential uses for the material, the design resources available and to have a basic understanding of the typical design methodologies and regulatory environment. The goal of this chapter is to present these items along with a design example to serve as a guide for this type of construction.

The chapter is organized into three additional sections. In the main body, CLT is introduced as an emerging building construction material. The introduction to the material is kept brief since there is ample information published on this topic already. Next is a short discussion regarding the current regulatory environment, followed by a discussion of the structural design and the presentation of the detailed example.

The structural design was performed on a model home provided by a local (Central Pennsylvania) home builder (S&A). Previously, a structural design was completed for this same residence using light-frame construction methods. The design was published in 2009 as a chapter in the book titled, "Timber Buildings and Sustainability" [3]. This report is intended as a follow-up to the original design report to present design of the same residence using an alternative structural system.
