Allowance
A placeholder amount for a selection or work item that has not been fully specified. Ask which product, quantity, labor, delivery, tax, and installation assumptions support it.
30 PLAIN-LANGUAGE DEFINITIONS
Use the glossary beside proposals, plans, product documents, and field guides. These definitions support better questions; project documents and qualified professionals control the actual specification.
FIND A TERM
Showing 30 of 30 terms
A placeholder amount for a selection or work item that has not been fully specified. Ask which product, quantity, labor, delivery, tax, and installation assumptions support it.
Material placed around a pool structure after it is built or set. Material, placement, compaction, drainage, and sequencing depend on the pool system and site.
The reinforced upper portion of a concrete pool wall that ties the structure together and supports edge details such as tile and coping.
An electrical safety measure connecting conductive components to reduce voltage differences. It is distinct from grounding and requires qualified design and installation.
The finished edge at the top of the pool wall and the transition between the pool structure and surrounding deck.
A written modification to scope, price, or schedule. It should identify the changed work, reason, amount, timing effect, and authorization.
The planned movement of water through outlets, pipes, pump, filter, treatment equipment, and return inlets.
The process of starting, testing, setting, labeling, and demonstrating installed equipment and controls.
A chlorine stabilizer used in some outdoor pools. It changes the disinfectant guidance that applies, so testing and dosing should follow current health and product instructions.
A common method for measuring disinfectant concentration. CDC discusses DPD kits in its residential pool testing guidance.
The service area for pumps, filters, heaters, controls, valves, and related components, including drainage, ventilation, clearance, and removal space.
The portion of chlorine available to disinfect the water, measured separately from combined or total chlorine.
A pneumatically placed concrete process used for site-built shells. The project still requires structural design, reinforcement, plumbing, finish, curing, and complete site scope.
How water flows through pipes, fittings, valves, inlets, outlets, and equipment under different operating modes.
The flexible waterproof membrane fitted inside a vinyl-liner pool system. Product, fit, fittings, care, and replacement planning all matter.
A defined project stage that may be linked to payment. The agreement should state what evidence establishes completion.
A measure of how acidic or basic water is. It affects swimmer comfort, surfaces, equipment, and disinfectant performance.
Work or pricing that cannot be confirmed until a condition, quantity, selection, or investigation is resolved.
A written closeout list of incomplete or corrective items, each with a location, responsible party, target date, and resolution.
An opening that sends treated water back into the pool as part of the circulation design.
A treatment system or product used to control microorganisms. Operation must follow current public-health guidance and product instructions.
Concrete conveyed through a hose and projected into place. Like gunite, it is one part of a complete engineered and finished pool system.
A component that draws water and floating debris from the surface into the circulation system.
The controlled period after filling when circulation begins and water conditions are established, often with finish-specific procedures.
A submerged outlet connected to the circulation system. Design and safety requirements need qualified professional handling.
A calculated relationship between pool volume and circulation flow. It does not by itself prove uniform circulation or safe water.
A pump that can run at different motor speeds. Appropriate settings depend on the installed hydraulic system and required functions.
The finish band at the waterline of many pools, selected and installed as part of the interior-edge system.
The movable flap in many skimmers that helps draw surface water and debris into the skimmer.
A contractor’s written commitment covering defined installation work, separate from manufacturer product warranties.