Assessment of Musculoskeletal Disorders (MSDs) Risk During the Framing of a 6' x 8' Wooden Shed Using Traditional Hammers

Author(s) Information

Maxwell R. Helfman, California Polytechnic State University, San Luis ObispoFollow

College - Author 1

College of Architecture and Environmental Design

Department - Author 1

Construction Management Department

Degree Name - Author 1

BS in Construction Management

Date

6-2024

Primary Advisor/Subject Matter Expert (SME)

Vineeth Dharmapala, College of Architecture and Environmental Design, Construction Management Department

Abstract/Summary

Wood-framed construction will almost always use nails as a connector whether it be for different pieces of wall sections or connecting wall sections to the structure. Nails also act in Shear Walls in different nailing patterns to prevent the panel from splitting. Houses in modern times are usually nailed with nail guns, either with a cord or cordless, which reduces their exposure to Musculoskeletal disorders (MSDs). However, smaller jobs may opt to use traditional hammers instead of nail guns. This study aims to numerically quantify the forces and flexions one puts on the body when performing nailing tasks using a traditional hammer. The study is focused on the CM 214, Spring 2024, Section one six feet by eight feet shed. This project was framed during week 5 of the California Polytechnic San Luis Obispo Spring 2024 quarter. Videos of the framing process were taken during construction and then subsequently processed using the VelocityEHS Safety program providing a risk score and flexion graphs. The findings of this paper show the flexions and intensity of said flexion in the neck, back, shoulders, and knees of the framer.

URL: https://digitalcommons.calpoly.edu/cmsp/770