Preface: This is the fifth edition of CSA Z240.10.1, Site preparation, foundation, and installation of buildings. It supersedes the previous editions published in 2016 and 2008 under the title Site preparation, foundation, and anchorage of manufactured homes, in 1994 under the title Site Preparation, Foundation, and Anchorage of Mobile Homes, and in 1986 under the title Recommended Practice for the Site Preparation, Foundation, and Anchorage of Mobile Homes. Significant changes to this edition address climate change adaptation with revisions and new provisions which include the following: a) sources for climate data; b) protection against effects of flooding; c) deterioration resistance; and d) addition of a new annex A on environmental design data and climate change. This Standard is intended to be referenced by regulatory authorities, land-lease community owners, and building designers and installers so that proper on-site installation of buildings can be achieved. CSA Group acknowledges that the development of this Standard was made possible by the financial support of the Standards Council of Canada. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. Scope: 1.1 Application This Standard applies to single- and multi-section buildings supported on longitudinal floor beams, or perimeter rim joists designed to perform as beams. 1.2 Issues addressed This Standard specifies requirements for the following aspects of building installation: a) site preparation; b) permanent foundations; c) anchorage to resist overturning and pier toppling due to wind; d) connection of modules in multiple-section prefabricated buildings; and e) skirting. Note: The term "prefabricated building" is used in this Standard to refer to manufactured homes, modular homes, and other factory-constructed buildings. 1.3 Users This Standard is intended to be used by builders, building officials, owners, and installers of a) buildings installed on surface foundations including prefabricated buildings; and b) multiple-section prefabricated buildings. 1.4 Terminology 1.4.1 In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application. 1.4.2 In this Standard, "accepted engineering practice" is used to refer to practice in Canada including compliance of designs with the National Building Code of Canada (NBC), Division B, Part 4 Structural Design or the applicable provincial, territorial, or municipal code. 1.5 Units of measure The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.