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There are a lot of restaurants in society. This is a common type of building for plumbers to work with. Finding the number of water closets and lavatories re­quired in a restaurant is no more difficult than the other examples that we’ve been working with. However, there are additional requirements for restaurants. Essentially, you must […]

The minimum fixture requirements for retail stores differ from the examples that we have just been working with. However, the concept and approach of computing the needs is same. Refer to Figure 9.3 for listings that pertain to retail stores. You can see that the table is very similar, in layout, to the one we […]

Commercial buildings of multiple tenants is our first topic of conversation (Fig. 9.1). This type of building can include a number of uses. Look at the table in Figure 9.1. You can see headings for water closets, lavatories, drink­ing fountains, and bathing fixtures. At first glance, the table seems simple enough, and it is not […]

C It is common for plumbers to be pro­vided with detailed blueprints when bid­ding jobs. The drawings will normally be submitted to a code enforcement office for approval. During this process, there are many ways for mistakes to be caught.

(We suggest you make an office copy of this page when ready to calculate.) For selecting WELL-X-TROLs for a different running time than ESP I or ESP II, and/or at pres­sure ranges the same or different than 20/40,30/50, 40/60: THINGS YOU MUST KNOW 1, System flow rate (pump capacity or discharge) GPM   . Min. […]

The remaining tables are different in content, but the procedures for using them are the same. Once you know the number of bedrooms and bathrooms for a dwelling, you can quickly and easily determine the minimum require­ments for a water heater. You have just seen how simple the tables are. When you have a water […]

We will start our sizing exercises with homes where less than two bath­rooms are present. You will see tables for gas-fired, electric, and oil-fired water heaters. The number of bedrooms in our sample homes can range from one to three. You will have to use the chart to size a water heater for the examples […]

S izing water heaters is not a complicated process. It is, however, an im­portant part of most plumbing jobs. Local code requirements call for minimum standards. The minimum facility requirements can be found in any major codebook or local code enforcement office. Since plumbing codes are regional, you will have to check your local code […]

B101 Sizing Example The following example gives one method of sizing the primary drain system and sizing the scuppers in the parapet walls. This method converts the roof area to an equivalent roof area for a 4-inch rate of rainfall so that Fig. 6.9 can be used as printed. B101.1 Problem: Given the roof plan […]

Storm-water calculations stump some plumbers. I think that the problem for some plumbers is computing the amount of water accumulated due to structures on roofs. For example, if a roof has an enclosed stairway sys­tem, the walls and roof of the stairway have to be factored into the equation for what is required in rainfall […]