Lately, there has been a smell of discrimination rising in the air above California, where some regulators would love to completely ban some internal-combustion engines in favor of cheerful electric motors. But for most heavy-duty applications, there still is no viable alternative to the diesel engine. It is the most efficient way to move earth, build bridges and pave roads after more than 100 years of improvement including turbochargers, electronic boards, exhaust-gas recirculation coolers, high-pressure fuel injectors, particulate filters and catalytic convertors. Photo: Tudor Van Hampton / ENR Few people are against cleaner air, but California’s general policy of treating
The market is generally healthy and steadily growing, and margins are up for large specialty contractors. Further, advances in design tools and owner demand for collaboration are giving subcontractors a seat at the table early on in projects.