Comfort Starts at the Entrance: Design for National Park Entry and Comfort Stations
When people think about what makes a great park experience, they usually think about the scenery, trails, playgrounds, or gathering spaces. Mechanical and plumbing systems probably are not high on that list, but they have a bigger impact on the visitor experience than most people realize. At 360 Engineering, we think about Mechanical and Plumbing systems in terms of what visitors and staff actually experience. Is the space comfortable? Does the restroom feel clean and fresh? Is the air quality appropriate for the site? Are the systems reliable and easy for staff to operate? In parks and recreation settings, those questions are especially important in smaller, high-use buildings such as entry and comfort stations. First Impressions Start at the Entry Station For many visitors, the entry station is their first interaction with the park. It may be where they purchase a pass, ask a question, or speak with staff before heading farther into the site. These small buildings can be surprisingly challenging to condition. Large windows, frequent door openings, direct solar exposure, and fluctuating occupancy can all create significant temperature swings. Air quality can be just as important. Entry stations are often located directly adjacent to idling and slow-moving vehicles, which creates the potential for exhaust to infiltrate the building. Because park employees may spend an entire shift in these spaces, we look beyond basic heating and cooling and consider how the HVAC system can actively protect the indoor environment. One strategy we use is maintaining the building at a slight positive pressure relative to the outdoors. By supplying more conditioned air than is exhausted, air tends to move outward through doors and other openings instead of allowing vehicle exhaust and outdoor contaminants to migrate inside. Combined with thoughtful outdoor air intake locations and proper filtration, this can significantly improve the environment for staff working in these buildings every day. Comfort Stations Have an Outsized Impact Nobody visits a park because they are excited about the restroom, but a bad restroom can absolutely become one of the things they remember. Comfort stations need to feel clean, functional, and well maintained even during periods of heavy use. Plumbing and mechanical design both contribute to that experience. Durable fixtures, reliable water systems, freeze protection, drainage, and maintenance access all play a role in long-term performance. A restroom can look clean and still feel unpleasant if it is humid, stuffy, or odors linger. Effective exhaust, proper air distribution, and intentional pressure relationships help move air through the space rather than simply relying on uncontrolled infiltration through doors and cracks. When the system is designed well, the visitor should barely notice it, which is exactly the point. Stainless steel resilient fixture at a new NPS campground comfort station Air Quality Should Be Site-Specific One of the areas where 360 takes a more targeted approach is indoor air quality. Park facilities can be exposed to very different outdoor conditions depending on where they are located. Wildfire smoke may be the primary concern at one site, while another may be near vehicle traffic, an airport, dusty conditions, or other sources of airborne contaminants. Because of that, we do not believe every project should receive the same filtration strategy. Instead, we evaluate the potential contaminants in the surrounding area and design the system around the actual conditions of the site. That may include enhanced particulate filtration for wildfire smoke, additional consideration of gaseous contaminants from vehicle or aircraft exhaust, or strategic outdoor air intake locations that reduce exposure to known pollutant sources. Filtration, ventilation, pressurization, air intake locations, and controls all work together. The goal is not simply to bring outdoor air into the building, it is to understand the quality of that air and treat it appropriately before it reaches occupants. That site-specific approach is especially important for park employees who may spend eight hours a day inside a facility that visitors only occupy for a few minutes. Simple Systems, Thoughtful Design Park buildings often operate differently than traditional commercial buildings. Some see heavy seasonal use, some are located far from maintenance staff, and others may sit unoccupied for long periods before experiencing a busy weekend or event. That makes simplicity and reliability especially valuable. At 360, we try to avoid complexity for complexity’s sake. Equipment should be accessible. Controls should be understandable. Systems should be appropriate for how the facility is actually operated and maintained. The most effective solution is often not the most complicated one. It is the one that responds to the specific challenges of the site while remaining practical for the people who have to live with it after construction. The Best Mechanical and Plumbing Systems are Usually the Ones Visitors Never Notice When design is done well, most visitors will never know how much thought went into it. They will just know the entry station was comfortable. The restroom was clean and didn’t smell. The air felt fresh. The fixtures worked. And nothing about the building distracted them from the reason they came to the park in the first place. That is ultimately how we approach parks and recreation projects at 360 Engineering. We are not just selecting equipment and meeting code requirements. We are looking at the actual site, the contaminants and operational challenges around it, and the people who will use the building every day. Sometimes the systems visitors notice the least are the ones doing the most work. Next time you visit a National Park, take a moment to notice the systems working quietly behind the scenes, from the mechanical systems keeping entry stations comfortable and protecting indoor air quality, to the plumbing systems helping maintain the clean, reliable facilities visitors expect from our national treasures. Planning improvements to a park facility? Let’s talk about mechanical and plumbing solutions designed around your site, operations, and visitors. Connect with us to start the conversation.
Summer School Construction Starts Long Before Summer
Summer K-12 projects move at a pace that’s hard to appreciate until you have lived through one. For these construction projects, summer may be when the work is most visible, but successful projects begin months earlier. With fewer than 70 days between the last day of school and the first day back, there is little room for surprises. In just a few months, you are coordinating design, procurement, construction, inspections and closeout, all while working toward a deadline that simply cannot move. Faculty and students are coming back, and the building must be ready. Every design decision, procurement milestone, submittal, and field coordination meeting must keep the project moving toward that final completion and turnover. That’s why design-build has proven to be such an effective delivery method for school renovations. Instead of designers and contractors working sequentially, the entire team collaborates from the beginning to identify challenges, evaluate options, and make informed decisions before construction begins. By the time summer arrives, we are not reacting to the project. We have already built the relationships and shared understanding needed to execute it efficiently. That early involvement sets the entire team up for success. From the engineering side, one of the biggest advantages is gaining an early understanding of existing building conditions. Older schools often contain undocumented renovations, aging infrastructure, or systems that don’t match the original drawings. Identifying those conditions early allows the design team to develop practical solutions that reduce risk during construction. A great example was the HVAC and plumbing improvements at Denver Public Schools’ Amesse Elementary. Early in the project, the 360 Engineering team worked alongside HPM Contracting and the mechanical and plumbing subcontractors to investigate the existing building systems through site observations and field testing. That collaborative effort uncovered conditions that were not apparent from the available drawings and allowed the team to refine the project scope before design was finalized. Rather than reacting to unforeseen issues during construction, the team addressed them proactively, helping maintain both the schedule and budget. That level of collaboration continues throughout design. Weekly coordination meetings keep the owner, contractor, designers, and trade partners aligned, but equally important are the conversations between meetings, walking the site together, reviewing details in real time, and quickly resolving questions before they become schedule impacts. When decisions are measured in days instead of weeks, accessibility and trust become just as important as technical expertise. Design-build also creates opportunities to improve the project beyond the original concept. On one recent school renovation, early design coordination identified that a proposed lighting layout would have required extensive relocation of fire alarm and fire suppression systems. By working together before construction, the team adjusted the design to avoid unnecessary work while still meeting the owner’s goals, saving both time and cost. Fast-track summer projects will always present challenges. Existing conditions change, priorities evolve, and unexpected issues arise. The difference is having a team that plans ahead, communicates openly, and focuses on solving problems together. When designers, builders, owners, and trade partners work as one team from day one, schools receive projects that are thoughtfully designed, efficiently constructed, and ready to welcome students back on schedule. Thinking ahead to your next school renovation? Early collaboration is the key to staying on schedule and avoiding costly surprises. Contact us to learn how our team can help your next K–12 project succeed from planning through construction.
Engineering Justice: The Hidden Role of Mechanical and Plumbing Systems in Secure Facilities
Justice facilities, like courthouses, detention centers, and police stations, are very different from typical buildings. They must operate 24/7 while balancing safety, security, and humane conditions for everyone inside. Behind the scenes, mechanical and plumbing systems play a critical role in making that happen. One Building, Many Uses Justice facilities aren’t just one type of space; they combine courtrooms, offices, public areas, and secure holding spaces. Each of these has different schedules, occupancy levels, and security needs. To support this, building systems must carefully control airflow, temperature, and ventilation across different zones, often simultaneously. Built for Safety and Security Many system design choices directly impact safety: Clean, well-filtered air helps protect occupants Pressure control prevents contamination between spaces Specialized features, like security vents and anti-ligature fixtures, reduce risk Even something as simple as airflow direction can help limit hazards or maintain control in secure areas. Managing Airflow in High-Risk Spaces Certain rooms, such as holding cells, evidence storage areas, and gun-cleaning rooms, require specialized ventilation to safely remove contaminants. Some facilities may consider installing emergency exhaust systems in public spaces to quickly clear the air in the event of a chemical threat. To make all these systems work together, engineers must carefully balance air pressure throughout the building to ensure it is properly pressurized under all operating conditions. Always On: Planning for the Unexpected Because these facilities never close, reliability is critical. Systems are often designed with redundancy in mind and backups so operations can continue during: Equipment failures Extreme weather Power outages Emergency power systems and backup heating options help ensure that essential services always remain available. Efficiency Matters Running systems 24/7 can consume significant energy, so efficiency is a top priority. Design teams shall explore: Setting overall building energy goals to help develop energy-saving strategies High-efficiency heating and cooling systems such as geothermal or heat pumps Heat recovery options to reduce the impact from high exhaust loads. Water-saving strategies like low-flow fixtures or reuse systems These choices help reduce long-term costs while maintaining performance. Designed for the Long Run Durability and ease of maintenance are just as important as performance. Equipment must be: Reliable and easy to service Located for safe, practical access Compatible with available parts and local expertise Good design ensures systems stay operational without disrupting daily activities. The Bottom Line Mechanical and plumbing systems in justice facilities do much more than provide basic comfort; they quietly support safety, security, and daily operations. When thoughtfully designed, they help create environments that are not only functional and resilient but also safer and more humane for everyone inside. Whether you’re planning a new justice facility or modernizing an existing one, 360 Engineering can help develop mechanical and plumbing systems that support security, reliability, and occupant well-being. Reach out to our team to start a conversation about your next project. Explore some of our recent justice facility projects: Denver Police Department Station 5 Huerfano County Judicial Center
Why Building System Upgrades Matter for Libraries and Community Spaces
Libraries are more than places to borrow books—they serve as community hubs that bring people together. They support lifelong learning by providing access to educational resources, technology, and digital tools for all ages. Libraries also host events, workshops, and programs that encourage creativity, skill-building, and social interaction. By offering welcoming spaces for connection and collaboration, libraries help strengthen communities and make knowledge accessible to everyone. As demand for technology grows, libraries need reliable mechanical and plumbing systems that can support computers, makerspaces, and learning environments. Aging infrastructure can limit a library’s ability to expand services, maintain comfort, and safely support new technologies, making upgrades critical to keeping libraries accessible, resilient, and future-ready community spaces. By providing energy-efficient systems that improve sustainability and reduce operating costs, and by serving as an example to the community, demonstrating how public buildings can responsibly use resources while maintaining comfortable, welcoming spaces. By incorporating efficient heating and cooling systems, and water-saving technologies, libraries model practical sustainability solutions that community members can learn from and apply in their own homes and workplaces. These visible investments show a commitment to environmental stewardship, reduce operating costs, and reinforce the library’s role as a trusted leader in promoting sustainable practices and community well-being. We see many jurisdictions leading by example, choosing high-efficiency systems or eliminating gas-fired equipment and opting for all-electric systems. Improved HVAC systems enhance comfort and indoor air quality by maintaining consistent temperatures, proper ventilation, and healthier air for visitors and staff. This is especially important in libraries, where people spend extended periods studying, working, and attending programs. Modern, energy-efficient systems use less energy while operating more effectively, reducing utility costs and minimizing maintenance needs over time. By reducing operating expenses, libraries can reallocate resources to programs, services, and community initiatives while providing a healthier, more comfortable environment. New systems can focus on acoustic comfort as well as temperature. Many new mechanical systems today can be designed to reduce the sound generated by the equipment more than most older systems did. They also allow for temperature control in individual spaces. Updated plumbing systems improve both health and accessibility by providing modern restrooms and fixtures that better serve people of all ages and abilities. Reliable, well-designed facilities support hygiene, comfort, and compliance with current accessibility standards, helping ensure that libraries remain inclusive community spaces. Water-efficient systems also support daily operations by reducing water consumption while maintaining dependable performance. Together, these improvements promote public health, environmental responsibility, and long-term operational sustainability. Mechanical and plumbing upgrades strengthen libraries as long-term community assets by ensuring buildings remain safe, reliable, and adaptable to changing needs. Modernized systems support evolving technology, flexible programming spaces, and improved comfort for visitors and staff, enabling libraries to remain vibrant community hubs. By investing in these improvements, communities help ensure their libraries remain resilient, sustainable, and capable of supporting future generations. Planning a new library, modernizing an existing facility, or preparing for future building needs? Our team brings broad experience in mechanical and plumbing system design that supports comfort, efficiency, flexibility, and long-term reliability. Connect with us to discuss how thoughtful infrastructure upgrades can help your library better serve its community.
Types of Commercial Water Heaters: Feel the Heat this Valentine’s Day
When it comes to commercial water heaters, building owners and tenants have several options to choose from, each with its own set of advantages and disadvantages. As plumbing engineers, we know that understanding these options is crucial for recommending the best solutions to our clients. In this blog post, we’ll explore the different types of commercial water heaters, including electric resistance, heat pump, gas-fired, and the differences between tankless and storage tank types. We’ll also touch on the Denver Energy Code changes and restrictions related to service water heating. Our goal is to help everyone “feel the heat” this Valentine’s Day! Tankless vs. Storage Tank Water Heaters Another significant decision to face is choosing between tankless and storage tank water heaters. Each type has its own set of benefits and drawbacks. Denver Energy Code Restrictions The Denver Energy Code has specific restrictions on the types of water heaters that can be installed in new and existing commercial buildings. As of March 1, 2023, the code requires partial electrification for all existing commercial and multifamily buildings when replacing gas-fired space and water heating equipment. This means that gas-fired water heaters are being phased out in favor of more energy-efficient options like electric heat pump water heaters. For commercial buildings, the Denver Energy Code also encourages the use of electric heat pump water heaters and restricts the installation of new gas-fired water heaters. These changes are part of Denver’s broader efforts to reduce carbon emissions and promote sustainable building practices. Valentine’s Day Jokes And because you asked for it, here are some Valentine-themed jokes to help everyone feel the heat (or maybe just make us plumbing engineers chuckle): Conclusion Choosing the right water heater for a commercial building involves considering various factors, including energy efficiency, operating costs, and installation requirements. Electric resistance, heat pump, gas-fired, storage, and tankless water heaters each have their own advantages and disadvantages. Understanding these options and the local energy code restrictions can help businesses make informed decisions. Whether you’re a business owner, plumber, or engineer, understanding the intricacies of water heaters is key to ensuring a comfortable working environment—just like keeping the warmth alive in your Valentine’s heart!
Hot Water Decoded: An Introductory Guide to Water Heaters
As the name suggests, water heaters are equipment that will raise water temperature. Water heaters come in many shapes and sizes but can be characterized by storage and energy sources. Storage methods are tank or tankless; the energy source is electricity or fossil fuels. Tank water heaters, also called “storage” type water heaters, hold a set volume of water that is heated through prolonged contact with the internal heating components. Tankless, or “instant,” water heaters use a much higher energy input to heat the water to the desired temperature as it flows to the fixture. There are two main ways to use electricity to heat water, one being electric resistance and the other by using the electricity to run a heat-pump refrigerant cycle. Electric resistance-style heating elements are simple and have no moving parts, but the energy output is equal to the energy consumed by the coil. Although heat-pump water heaters also use electricity to operate, they “move” heat instead of “creating” it. This process is a more efficient way of heating water, allowing heat pump water heaters to be up to 410% more efficient than an equivalent resistance style. Water heaters that use fossil fuels as the energy source are usually referred to as gas water heaters. The options for source types are most commonly natural gas or propane. Natural gas is the fossil fuel utility most often offered by service providers, while propane is usually shipped and stored in tanks on-site. Although most gas water heaters are similar, the most noticeable difference is between condensing and non-condensing style burners. When gas-fired equipment burns fuel, it doesn’t use 100% of the energy released from combustion, resulting in a mixture of unburnt fuel and water vapor. If cooled enough, the flue gases can condense on the flue vent piping, leading to corrosion. Hence, manufacturers reserve approximately 20% of the energy released to keep the flue gas temperatures high enough to prevent condensation. More modern gas-fired water heaters will utilize the condensation to put more energy into the water instead of keeping the flue vent gases hot, resulting in efficiencies up to 98%. The corrosive condensate produced by this process is handled by using resilient metals for the heat exchanger and acid-neutralization kits to ensure the condensation produced is safe for sanitary lines and treatment plants. Tank-Type Water Heaters Pros Cons Tankless Water Heaters Pros Cons Electric Resistance Water Heaters Pros Cons Heat Pump Water Heaters Pros Cons Gas-Fired Water Heaters Pros Cons
Flowing Forward: Basics in Graywater Recycling and Water Conservation
With climate patterns changing and becoming more unpredictable, water conservation measures are becoming critical to reduce water consumption in our buildings. One way to reduce water consumption and decrease your water utility bill is to utilize a graywater recycling system. Below, we will explore graywater and graywater recycling systems, where they are best to be implemented, and what the requirements are around these systems. What is Graywater? Let’s start with the basics. What is graywater? Graywater is nonpotable wastewater from washing machines, showers, bathtubs, lavatories, and HVAC Condensate. It can be treated and recycled for use in water closets/urinals and irrigation systems to reduce your building’s domestic water consumption and wastewater quantity. Graywater is piped separately from the building’s main wastewater system and is routed from the designated fixtures providing graywater to a graywater treatment (if required) and storage system. The exact components of this system will depend on your manufacturer and authority having jurisdiction (AHJ) but it typically consists of a water treatment system, a storage tank, and a pump. The treated graywater will then be routed to the water closets and irrigation systems designed to be served from the graywater systems. Even though the graywater may go through a treatment system, it is important to note that this water is still not potable. Is a Graywater System Right for Your Building? Now that we know what a graywater system is, when is a graywater system right for your project/building? To utilize a graywater system to the fullest extent, the project should have a steady and consistent usage of the fixtures supplying the graywater system. Buildings with consistent shower and/or laundry usage provide the best supply to a graywater system. This could apply to hotels, multi-family, fitness/recreation centers, police departments, etc. Buildings without shower or laundry usage can still be a good candidate, but the graywater system may not be capable of providing the water for all the water closets or irrigation needs since the waste from lavatories will typically not equate to the water closet and irrigation usage. A review of the feasibility of a graywater system for a building can be done during the pre-design or schematic design phases with the plumbing engineer and a graywater system manufacturer to determine if it’s a good application for the project. Requirements In conjunction with evaluating if a graywater system is suitable for your building based on building type and fixture usage, it will need to be determined that the AHJ allows graywater systems and if they have any special requirements for the system. The City of Denver, for example, allows and encourages graywater systems, but a graywater system installed in the City and County of Denver must meet the requirements of Denver’s Graywater Use Program, which can be found on the city’s website and outlines requirements for graywater systems used for irrigation and toilets/urinals. These requirements include treatment, signage, watercolor, testing, and permitting needs. Implementation We have now determined that a graywater system is a good application for our project, and the AHJ allows graywater systems. That great! So, what is next? During the early design phase, the engineer will need to work with the architect and other consultants to ensure the proper location and space are allocated for the system. The graywater system will preferably be located in a room below the fixtures providing graywater so the waste can gravity drain into the treatment/storage system. Ideally, this would be located in a basement. The engineer will also need to determine the required system components based on the application and AHJ to ensure proper space is allocated for the equipment. The system could include treatment equipment, storage tanks, pumps, backflow preventors, valves, etc., so ensuring space is appropriately allocated for this equipment early is critical. If the proper location and space are allocated for the graywater system early, this should set up the design for the remainder of the project. Overall, a graywater system can be a great way to conserve water usage in your building and decrease water utility costs. Prior to implementing a graywater system in a building’s design, the building’s fixture use should be evaluated for the impact of the graywater system, along with confirming the AHJ requirements for graywater systems to ensure it’s the right approach for the project. Resources:
Elevating Aesthetics While Minimizing Cost Impacts
HVAC and plumbing systems are essential to creating a comfortable and productive environment in our buildings; however, nothing can bring down the look of a well-designed space more than a misplaced diffuser or unexpected thermostat. In most instances, concealing HVAC and plumbing designs into high-finish spaces can come with major cost impacts, but there are simple ways to elevate the integration of these systems into a space without major impacts on the budget. Let’s explore a few! Alignment of Ceiling Devices Aligning diffusers with other ceiling devices is a small task but can have a big impact on the uniformity of the ceiling to provide a clean and organized look. The goal of this approach would be to align diffusers and other ceiling devices to the centerline of the lights, along with creating uniform spacing between the diffuser and other ceiling devices. To ensure the engineer has time to coordinate the final diffuser and device locations, the final locations of lights and other ceiling components should be provided around 75-80% CDs for final alignment. If the aesthetics of a space is a priority, having an RCP coordination meeting between the architect, electrical engineer, and mechanical engineer can be very beneficial to talk through the priority of devices and ensure all parties are fully coordinated. Elevate the Diffuser Specifications Standard cone, louvered, or perforated diffusers can be swapped out to a square plaque diffuser for both the supply and return in the ceiling for a small cost increase ($20-$30/diffuser*). If both the supply and return diffusers are revised to this specification, this can create a clean, uniform look in the ceiling. Square plaque diffusers have a very efficient supply air distribution, providing low-pressure drop and low sound levels with efficient mixing. However, it should be considered when using this specification for return air that this diffuser has less return capacity than other return diffusers with more free area, so additional return grilles may need to be added with this specification. In addition to revising the specifications for square ceiling diffusers, there are many aesthetically pleasing grilles and slots that can be incorporated into the design for supply and return air. The architect should coordinate with the mechanical engineer early in the design process to discuss linear grilles or slot diffuser options to ensure these are properly coordinated into the ceiling and wall details. Although linear grilles and slot diffusers can add significant cost compared to standard louvered grilles or diffusers, applying slots to strategic spaces like lobbies or conference rooms can elevate these common spaces and set the tone for the rest of the building. Coordinating Thermostat Locations and Specifications When placing the thermostats on the plans, the engineer must be strategic with the placement to ensure optimal control of the mechanical system. If this is not properly coordinated during design, this can lead to unexpected locations on the wall come time for the final punch. When we are placing thermostats in the design, we are considering the following: direct sunlight, exterior walls, the path of supply airflow, proximity to major heat-producing equipment, location within the occupied/breathing zone, and many more. In some spaces, these considerations can make thermostat placement challenging. For proper placement coordination, the architect should review the proposed thermostat locations on the drawings once the engineer has laid them out to ensure the locations do not conflict with their design. For more complex spaces, deeper coordination may be required to shift around the thermostats or even shift wall finishes around to accommodate the ideal thermostat location. A coordination meeting between the architect and mechanical engineer may be ideal for these more complex applications. If local control of the temperature setpoint in the space is not required, remote temperature sensors can be considered for minimal added cost. This would locate a thermostat in a concealed or central location for temperature adjustment (If DDC controls are provided, this could be provided via a web-based controller) with a remote temperature sensor placed in the space being measured. There are several types of remote temperature sensors available, including button-style sensors that are about 1” in diameter and can be stainless steel, brass, or paintable and can be easily integrated into the design. Although these recommendations are simple, they can be effective if proactive coordination is achieved. Having upfront discussions on the design intent of the mechanical and plumbing system integration throughout the project will help the engineer provide solutions early to achieve the aesthetic goals of the space. Additionally, if the aesthetics of these systems are a priority in a space, but the budget is tight, these simple solutions and several others can be applied without busting the budget.