Attachment_5_-_SDM_Definitions.pdf

GSA

General Services Administration Public Buildings Service

Real Property Asset Management

Attachment 5

Spatial Data Management

Information, Terms and Definitions

11/19/2012

SPATIAL DATA MANAGEMENT (SDM)

Table of Contents

1.0 Introduction

1.1 Purpose

2.0 SDM Specific Requirements

2.1 Initial Measurement and Validation (IMV) or Re-Measurement

2.2 SDM Maintenance

1.0 Introduction

1.1 Purpose

The General Services Administration (GSA), Public Buildings Service (PBS) is one of the largest public real estate organizations in the world. The Spatial Data Management (SDM) program’s mission is to measure, record and maintain space assignments to support rent bills, providing transparency to all stakeholders. SDM is GSA’s national effort to create, update, and maintain its spatial data and Computer Aided Design (CAD) floor plans to accurately reflect the federally owned and leased building inventory.

This Appendix X was created as a companion to the BIM-SDM Statement of Work (SOW) in order to more clearly explain and describe various terms, definitions and descriptions that are contained in the SOW. Appendix X is part of the contract package.

2.0 SDM Specific Requirements

The following is listing and explanation of SDM services that GSA-PBS is looking for from the

Contractor. The Contractor shall be able to provide the following deliverables in accordance with the

SDM services described in this section.

2.1 Initial Measurement and Validation (IMV) or Re-Measurement The Initial Measurement and Validation (IMV) has been the ground work for the SDM program since 1996. This process involves measuring a building and capturing detailed field notes, drawing the building in CAD, and loading the spatial information into a Computer Aided

Facilities Management (CAFM) database. The drawings and CAFM data are checked and reconciled with the inventory system. Once a building has been reconciled and updated in the inventory system, the drawings and spatial data enter the SDM maintenance process.

There are times that a re-measurement of a building will be needed due to a prospectus level project. In these circumstances this task will be required to revalidate the buildings architecture and assignments. A part of the IMV or Re-Measurement task includes creation of Base

Drawings, Assignment Drawings and Site Plans which are explained here:

a. Base Drawings

Base drawings represent the as-maintained conditions of the buildings architecture.

The base drawings include all floors such as Sub Basements, Mezzanines, and Roofs.

These drawings are used in all minor project, emergency management preparation, CMMS applications, appraisals, and conduction surveys. The base drawings are created from a combination of the buildings original working drawings (printed files and CAD files) and field verifications.

The conversion to CAD from printed drawings may be necessary: site visits shall be required. In the event that existing drawings are not available, the contractor shall draw

Base Drawings based solely on field measurements.

The contractor shall perform field verification of all enclosed spaces in the building, to produce CAD drawings which accurately represent all fixed architectural and structural elements including, but not limited to, items numbered i thru v below. (All subsequent base drawings are developed from the working drawings if available.) The working drawings are the drawings, which were used to construct the building and consist of the as-built documents. Drawings shall comply with the version of the PBS CAD

Standards as designated by the Contracting Officer’s Representative (COR).

Depending on the size of the building the field verification may require multiple trips to complete the documentation. The development of the Base Drawings can be split into two steps to make the process easier. The first step is to complete shell and core architectural elements of the building prior to conducting the first field visit. Then conduct the first field visit to confirm the shell and core accuracy. Then once the shell and core have been accepted, the second field visit to capture the tenant architectural elements can be conducted.

i. Shell Architecture Elements

1. All shell walls include those in the building shell, stairs, elevators, mechanical cores, plumbing chases and restrooms.

2. All glazing elements including the window frames, glass, and windowsills.

3. All shell doors, their numbers and swing. Doorframes are not essential.

4. All plumbing fixtures such as toilets, urinals, sinks, toilet partitions, doors, drinking fountains, and handicapped stalls.

5. All level changes such as stairs & handrails, ramps & handrails, steps and concrete curbs. Mark all level changes with up/down arrows.

6. All shell fixtures such as elevator cabs, fire protection equipment and guard stations & equipment.

7. All structural elements including columns, their alpha numeric grid and pilasters. Column grids are based off the original working drawings.

ii. Corridor Architecture Elements

1. All corridor walls.

2. All corridor doors, their numbers and swing. Doorframe is not essential.

3. All glazing elements with their frame, glass, and sills represented.

4. All corridor level changes such as ramps & handrails, steps, and concrete curbs. Mark all level changes with up/down arrows.

5. All corridor fixtures such as fire protection equipment and drinking fountains.

iii. Tenant Architecture Elements

Upon acceptance of the Shell building drawings, the contractor shall prepare the

Tenant Architecture.

1. All tenant walls including partition walls and partial height walls. System furniture is not to be captured.

2. All tenant doors, their numbers and swing. Doorframe is not essential.

3. All glazing elements with their frame, glass, and sill represented.

4. All tenant level changes such as stairs & handrails, ramps & handrails, steps, and curbs. Mark all level changes with up/down arrows.

5. All permanent tenant fixtures such as sinks bookcases, shelves, counters, fire protection equipment, drinking fountains, and raised access flooring.

iv. Miscellaneous Architecture Elements

1. Shell, corridor, & tenant overhangs and overhead trapdoors.

2. Ladders and mechanical pits.

3. Tunnels and their openings.

4. Structure Parking striping and numbering.

v. Roof plan

1. Roof configuration with all levels notated.

2. Skylights, parapet walls, roof access points, and walkways.

3. Cooling towers, venting systems i.e. vent stacks and chimneys.

b. Assignment Drawings

Assignment Drawings consist of the information about the buildings, which include the

Base Drawings as backgrounds. The assignment drawings consist of smart objects such as polygons, and point objects. The information contained within these objects is captured during the site visit.

i. Polygons

a. Consist of the Gross Polygon and Space Polygons. These polygons are tied back to the database which consists of assignment information captured during the site visits.

ii. Point Objects

a. Consist of multiple point objects such as Parking, Antennas, and Door

IDs. The point objects are tied back to the database, which consists of assignment information captured during the site visits.

The contractor shall perform field verification of all areas in and around the building, to capture assignments accurately. The assignments information is loaded into the system following the current version of the National Business Space Assignment Policy. The software used for the delivered product shall be designated by the COR, and is subject to change based on the direction from the COR.

When field work is completed, the Contractor will submit original marked up copies, or color copies of the marked up drawings of their fieldwork, at Contractor’s expense. Refer to SOW and individual Task Order. All field work will be provided in electronic form i.e., pdf or tif format.

The Base Drawings and Assignment Drawings, when included together on a Task Order, will be included on the same deliverable.

c. Site Plan

The site plan represents the as-maintained conditions of the site. The site plan includes changes in materials or levels such as steps, ramps, sidewalks, curbs, permanent security enhancements, retaining walls, loading docks, planting beds, and parking spaces. These drawings are used in all minor project, emergency management preparation, CMMS applications, appraisals, and conduction surveys. The site plans are created from a combination of the original working drawings and legal descriptions (printed files and CAD files) and field verifications. Check the individual Task Order, but they typically include:

The striping and numbering of the surface parking spaces adjacent to or associated with the building.

o The parking point objects are to be assigned to each of the parking spaces.

The building outlines with the buildings entrances and loading docks.

The major changes in grade level such as retaining walls and platforms.

The property lines that extend, at least to the middle of adjoining streets (with street names clearly marked).

The appropriate Latitude and Longitude information for the building (optional).

2.2 SDM Maintenance

The PBS establishes and uses the space measurement, classification and assignment information for a variety of reasons. As such, PBS established the process of SDM Maintenance. The SDM

Maintenance is a process which the base and assignment information are maintained on a daily bases and by periodic walk-through. The daily maintenance process is required to ensure that the

Occupancy Agreement information is updated appropriately. The changes to the building might include but is not limited to only architectural changes and assignment changes. In addition, to routine maintenance, the buildings must be walked periodically to insure maintenance is being performed, and that the base and assignment information accurately representative of the buildings actual conditions.

The periodic walk-through is performed as SDM Space Audits or SDM Rewalks, which help to ensure that the building is accurate and identifies potential deficiencies in the daily process. The

SDM Space Audit does not cost more than a SDM Rewalk and a SDM Rewalk does not cost more than a Re-Measurement. Depending on the amount of estimated change in a building one of these three choices (Space Audit, Rewalk or Re-Measurement) will be used to conduct the periodic walk-through of the buildings.

--Concludes Information--