 PITTSBURGH--BUSINESS WIRE--- LMB construction--Limbach Holdings, Inc. Nasdaq: LMB Limbach or the Company today announced its financial results for the quarter ended March 31, 2021. Consolidated revenues declined 18.3 to 113.3 million as the Company continues to focus on replacing largely complete, lower margin projects with higher margin opportunities for strategic customers. Consistent with the Companys focus on expanded profitability driven by a more rigorous project selection process, gross margin 