Records of installations such as under-floor cabling in city offices is a particular problem because successive tenants cut off, but leave their predecessors ' cables then installed their own systems. Apart from registering on site changes to engineers ' and architect's Drawings, it is essential that specialist trade contractors record what has been installed on site.
These record drawings may be required for Health and Safety File or operation and maintenance manual issue to client on completion of Construction. This information may be supplemented by As-Built surveys. Contractors will generally mark up changes to final Construction issue drawings on-site using red ink, and these can then be used by consultant team to create recorded drawings showing the complete project. As a result, it is common for clients to require that As-build drawings are prepared, either during the construction process or when construction is complete, to reflect what has actually been build. These changes can be relatively minor or can be very significant. Most often these plans are utilized by architects, interior designers, space planners, engineers, and contractors for the purposes of build outs, remodeling, and rebranding.īoth of these types are drawings are available as one of the multiple services that American Building Calculations.On building projects, it is common for changes to be made during construction because of circumstances that emerge on site. The idea behind an Existing Condition Survey and drawings is to provide the most detailed view possible of a particular structure and property. Interior, exterior, and sectional elevations from finished floor, through the drop ceiling, on to the ceiling deck are also elements of existing condition drawings.
These plans may indicate where HVAC units are and their associated data such as size, serial numbers, and condition. They will show not only where electrical service and breaker panels are but also the various circuits and which areas they control. An existing conditions set of drawings will go so far as to document locations of electrical and data outlets, include reflected ceiling plans, show HVAC return, registers, duct work, and sprinkler lines. While containing the information and benefits in a set of as-built plans, more data about the property is captured, resulting in more detailed plans.
Facility managers may use these plans and integrate them with a Computer Aided Facilities Management (CAFM) software package.Īn Existing Conditions survey likewise is created post construction. These areas are then divided to determine the load factor which defines the rentable square footage (RSF) of tenant spaces. Property managers and brokers will have the plans analyzed to identify the square footage of tenant areas, common areas, and major vertical penetrations. Most often as-built floor plans are utilized by building owners to determine the gross and rentable areas during the due diligence period prior to sale completion. In the latter case as-built plans serve to create an up to date documentation of the interior layout of many tenant spaces which may have changed over the years. Post construction can be either immediately after the site is built or many years afterwards.
Examples of deviations may be doors that were placed in a different location from what was specified in the construction documents to determining the actual size and shape of the building versus what was specified. The intention of these plans is to document any deviations from the architect’s original design. These plans are created after construction of the building is complete. The term as-built commonly refers to refers to 2D floor plans showing a limited amount of detail such as walls, doors, windows, millwork, and plumbing fixtures. In the world of building measurement and area calculations the terms as-built floor plans and existing conditions plans sound as if they are interchangeable but are in fact are not.