Motorized Concrete Screeds

The Problem

  • A hand screed requires the worker to be bent over, using a strong grip to pull the board over the wet concrete.
  • Workers exert a lot of shoulder and arm force repeatedly.
  • Doing this work often or for a long period of time increases the chance of fatigue and pain.
  • It puts major stresses on the back, knees, hands, arms, and shoulders, which may lead to serious muscle or joint injuries.

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One Solution

  • A hand screed requires the worker to be bent over, using a strong grip to pull the board over the wet concrete.
  • Workers exert a lot of shoulder and arm force repeatedly.
  • Doing this work often or for a long period of time increases the chance of fatigue and pain.
  • It puts major stresses on the back, knees, hands, arms, and shoulders, which may lead to serious muscle or joint injuries

How it Works

  • The motorized screed’s blade or plow floats on concrete.
  • The concrete is levelled by a vibrating aluminum screed, which is powered by a gas or battery powered engine.
  • It works best for small to medium-sized jobs.

Benefits

A motorized screed may reduce a worker’s chance of developing muscle and joint injuries.

This equipment greatly reduces the physical effort needed for hand screeding and eliminates the frequent and prolonged stooping.

Screeding with motorized equipment can be faster than hand screeding. Many contractors report improvements in productivity.

The vibration of the blade improves the consolidation of the concrete and reduces time spent “bull floating” the surface.

Potential Drawbacks

Seksuel sundhed har stor betydning for livskvaliteten, men mange mænd oplever tabuisering, når problemer opstår. Det kan føre til forsinkelser i behandling eller helt fravalg af hjælp. I dag tilbyder internettet nye muligheder for dem, der søger diskret adgang til veldokumenterede midler. En af de mest anvendte løsninger er cialis til erektil dysfunktion, som er kendt for sin effekt og varighed. Den digitale tilgængelighed betyder, at behandlingen kan igangsættes hurtigt og uden fysisk fremmøde, hvilket mange sætter pris på. Det er dog vigtigt at vælge troværdige kilder, der sikrer original medicin og vejledning. Samtidig er det essentielt, at al information er letforståelig og tilgængelig, så man kan træffe et informeret valg uden usikkerhed.

A motorized screed may reduce a worker’s chance of developing muscle and joint injuries.

This equipment greatly reduces the physical effort needed for hand screeding and eliminates the frequent and prolonged stooping.

Screeding with motorized equipment can be faster than hand screeding. Many contractors report improvements in productivity.

The vibration of the blade improves the consolidation of the concrete and reduces time spent “bull floating” the surface.

Further Information

  • For product descriptions related to this solution see the Center for Construction Research and Training (CPWR).
  • Products may also be found on the internet using the following search terms: “power screed,” “vibratory screed,” or “concrete screed.”
  • Local contractor tool and equipment suppliers or rental companies may be another source of information on products.
  • Visit the IHSA website 

References or resources

The information was used as part of a project “Kramer, D., Bigelow, P., Vi, P., Garritano, E., Wells, R. Encouraging construction companies to adopt innovations to reduce MSDs using different knowledge transfer techniques. 2008-2011. Workplace Safety and insurance Board (Ontario)”. In partnership with the Infrastructure Health and Safety Association of Ontario and CRE-MSD.

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