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MSL Infill Project

Project Scope: Construction of 56 chemical exhaust hoods laboratory on the fifth floor while maintaining full operations in occupied building below.

Outcome: Laboratory construction completed with zero disruption to critical research operations in occupied floors below.

56
Chemical Exhaust Hoods
5th Floor
Occupied Building
MSL Infill Project

Project Overview

The MSL Infill Project transformed an abandoned fifth floor into a fully functional equipment hood laboratory, demonstrating MTI's ability to work within occupied buildings while managing extreme technical requirements. The existing four-story building had been incomplete for 10 years when funding became available to convert the fifth floor into a laboratory housing 56 scientific exhaust hoods for various chemical experiments, including perchloric acid and other corrosive materials.

Structural & Construction Challenges

The project required structural reinforcement throughout the building to support the additional weight loads, followed by concrete pouring over existing occupied facilities without disrupting operations below or allowing any concrete spillage onto active workspaces and laboratories. MTI coordinated this complex construction while ensuring the building remained fully operational and safe for all occupants.

Specialized Chemical Handling Systems

A critical component involved fabricating and installing 48-inch stainless steel exhaust piping designed to handle chemicals ranging from explosive perchloric acid to various corrosive substances. The stainless steel piping required specialized welding to maintain smooth interior surfaces, which is essential because perchloric acid residue forms explosive crystals when caught in rough pipe surfaces, potentially creating dangerous conditions.

Project Results

Result: The project included off-site and on-site fabrication, rooftop exhaust hood installation, structural modifications to accommodate new weight loads, and precise hole cutting in the concrete tilt-up building without compromising structural integrity. MTI completed this complex coordination of fabrication, installation, and structural work under budget and on time, demonstrating expertise in laboratory construction and chemical handling requirements.

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