The Rise of Hempcrete in U.S. Construction
The U.S. Hemp Building Association (USHBA) has announced groundbreaking advancements for hempcrete, a sustainable building material, positioning 2024 as a pivotal year for its mainstream adoption in the construction industry.
Hempcrete's Inclusion in International Residential Code
A significant development is the inclusion of hempcrete as an approved material for residential structures under the International Code Council (ICC). This inclusion in the International Residential Code (IRC) update marks hempcrete's official recognition as a viable building material, particularly for non-load-bearing walls and infill systems.
Implications for the Construction Industry
This development is crucial for the widespread adoption of hempcrete. It provides building professionals with a standardised guide for constructing with hempcrete, facilitating its use in building permit applications for one- and two-family dwellings and townhouses.
Expansion into Commercial Projects
Looking ahead to 2024, efforts are underway to standardise hempcrete for large commercial projects under the ICC’s International Building Code. This move could significantly expand hempcrete's application in the construction sector.
USHBA's Guide for Commercial Hempcrete Use
The USHBA is set to release a guide for specifying hempcrete in commercial buildings. This guide will offer architects standardised language for bid documents, further integrating hempcrete into mainstream construction practices.
Setting Standards for Hemp Hurd
USHBA is developing testing procedures and standards for hemp hurd, the core material in hempcrete. These standards aim to ensure consistent, construction-grade quality, reducing risks for builders and promoting confidence in hempcrete's reliability.
Collaboration with Universities for Quality Standards
Research at North Dakota State and Oregon State universities will contribute to establishing quality standards for hemp hurd. These standards will focus on size, dust levels, and fibre content, ensuring that hurd meets building-grade requirements.
Temporary Guidelines Pending ASTM Standards
USHBA's guidelines serve as a temporary measure until the American Society for Testing and Materials (ASTM) finalises standards for hemp in building materials. This interim period is crucial for the ongoing development and acceptance of hempcrete.
The year 2024 marks a significant milestone for hempcrete in the U.S. construction industry. With standardised codes and guidelines, hempcrete is poised to become a mainstream, sustainable building material, contributing to environmentally friendly and innovative construction practices.
