Appendix_D_-_Design_Narrative-Sept2012.pdf

Project Title SFRL:

Project Location

Appendix D –Basis of Design Narrative 1 of 5 Revised Sept 2010

BASIS OF DESIGN NARRATIVE

Basis of Civil Design Narrative

Site Development: Describe the site of the project, its natural advantages and disadvantages relative to the proposed project, natural vegetation, trees and topography which can be utilized in the enhancement of the completed facility.

Outline the proposed landscaping and other site work necessary to complete the site development. Include physical security requirements and considerations. Describe LEED points to be obtained.

Roads, Driveways, Parking Areas, Walks:

Provide the following information:

a. A statement of general soil conditions, with a brief outline of soil exploration and testing performed.

b. The type and volume of traffic, controlling wheel loads and types and/or classes of roads under consideration.

Water Supply: Provide the following information:

a. Explanation of existing system, covering the type, capacity, condition, present water use and unsatisfactory elements of component parts for major extensions.

b. Statement of type of construction and materials for mains.

c. For distribution systems, statement of design, domestic and fire flow, residual pressure, and elevation differentials (should include designer's estimate of pipe sizes).

d. Statement of sizes, elevations, capacities, etc., as can readily be determined without long computations or design consideration for reservoirs, treatment units, pumping plants, well pumps, and such units.

e. Method for reducing water usage to comply with the Executive Order Jan 2007.

Sewers and Sewage Disposal Systems:

Provide the following information:

a. Explanation of existing system covering, in particular, the type, capacity, condition, present flow, and unsatisfactory elements of component parts for major extensions.

b. Interpretation of degree of treatment necessary by effluent requirements and units necessary for treatment.

c. Statement of materials to be used for sewer systems and sewage treatment plants.

Fencing: Describe type, height, clear zones, and justification for new fencing. Describe height and type of existing fence on or adjacent to the project site. Include a description of any special phasing required to maintain security during removal and installation of fencing.

Environmental Pollution Control:

A statement explaining expected environmental pollution and the proposed method of control. A detailed description will be necessary for those facilities directly related to controlling air and water pollution; such as sewage treatment plants, industrial treatment facilities, incinerators, smoke elimination facilities and other similar projects.

Storm Drainage:

A statement of the requirements for storm water management for the particular state in which the project is located (i.e. on site detention/point source discharge). Explanation of the design approach to be taken, including materials selection.

Environmental Site Issues:

A statement explaining known and potential site environmental issues such as wetlands, shoreline or drainage issues requiring special permitting.

Demolition:

A statement discussing proposed demolition of existing structures, suspected or tested hazardous materials, and special disposal requirements.

Basis of Architectural Design Narrative

Appendix D –Basis of Design Narrative 2 of 5 Revised Sept 2010

Introduction: Briefly describe the purpose of this project and extent of construction. Describe LEED points that will be incorporated in the final design.

Architectural Style: Briefly describe architectural style of the proposed and the approach to achieving architectural compatibility and consistency among them.

Type of Construction: Describe type of construction chosen with reference to anticipated building life and degree of combustibility.

Building Insulation:

Describe types of insulation to be provided with specific R-values for roof(s), walls, floor(s), etc.

Materials and Finishes;

Describe materials for all major items of construction including interior/exterior finishes.

Physical and Electronic Security:

Describe security features proposed for use in the construction.

Furniture, Fixtures and Equipment List:

List new and existing furnishings and equipment to be accommodated in the project.

Space Programming:

Provide the following:

a. Gross area calculations.

b. Net area for each room, verifying that room size is adequate for built-in and free-standing furnishings and equipment for the identified function.

Water and Moisture Proofing:

a. Identify roofing membrane material. If single ply, identify proposed generic type.

b. Describe means for controlling water penetration and moisture migration through exterior walls.

c. Describe typical roof and wall sections.

Hazardous Materials Abatement:

Identify abatement areas and quantities of asbestos, lead based paint, PCBs, mercury or other hazardous materials.

Recycled Materials: Identify major areas for recycling of demolished material and incorporation of recycled products into the design.

LEED Checklist

Provide a copy of the preliminary LEED Checklist indicating design and construction items to be incorporated into the project to achieve the requirements for LEED Certification.

Appendix D –Basis of Design Narrative 3 of 5 Revised Sept 2010

Basis of Structural Design Narrative

Introduction: The Basis of Design shall justify the foundation and structural systems to be used. A brief synopsis shall be included to identify the logical alternatives for structural consideration and to discuss the rationale used to determine the best foundation and structural systems. Attention shall be given to factors such as criteria, local conditions, construction schedule and methods, availability of materials/skilled labor, etc.

Description of the foundation:

The description of the foundation shall include the subsurface conditions, the method of analysis and design, and the allowable capacity and time/settlement curves for any differential/uniform settlement expected.

Description of the structural system:

The description of the structural system shall include the type of construction, method of analysis and design, all significant design criteria and loads, and all special features to be included on the drawings.

Basis of Mechanical Design Narrative

Introduction: The Basis of Design shall be a narrative presentation of facts that will clearly indicate the selected mechanical/plumbing systems and/or the proposed alternative systems to be analyzed. Describe method for obtaining LEED points

Plumbing Systems:

A discussion and description shall be provided for:

a. Number and types of plumbing fixtures

b. Selection of piping materials

a. Estimated maximum and minimum water pressure

b. Availability/capacity of system connected into.

Heating, Ventilation, and Air Conditioning:

A discussion and description shall be provided for:

a. Calculated heating and cooling loads

b. Documentation of unusual temperature and humidity requirements

c. Ventilation rates

d. Discussion of areas to be conditioned and equipment locations/space requirements

e. Documentation of customer’s preference for the HVAC control system

f. Information on available energy sources/utilities.

g. Description of the selected HVAC systems and controls, including energy sources.

h. Special HVAC requirements (hazardous areas such as welding hoods, dip tanks, etc.)

Refrigeration (Cold Storage):

Refrigeration (Cold Storage): Describe refrigeration/cold storage requirements, proposed equipment, vapor barrier, types of refrigerants, etc.

Fuel Distribution and Storage:

Bulk and Ready Issue Petroleum Fuel Distribution and Storage: Discuss storage, distribution, leak detection, containment, overfill protection etc.

Energy Conservation::

A discussion and description of proposed systems to manage energy consumption.

Miscellaneous Mechanical Systems:

Miscellaneous Mechanical Systems: Describe any special mechanical systems.

Appendix D –Basis of Design Narrative 4 of 5 Revised Sept 2010

Basis of Fire Protection Design Narrative

Introduction: Include the type of occupancy per Life Safety Code, NFPA-101, and if sprinkler protection will be provided.

Prior to the design of any structure, specific questions regarding fire protection must be raised in order to address the occupants' particular needs and acceptable levels of fire risk as avenues of egress and fire rated separations are all basic to the floor plan. It is essential that any answers about fire protection be reached as early as possible.

Type of Construction:

Clearly identify and describe the type of construction to be used as defined by the Uniform Building Code detailing the maximum fire area and separation of structures. Submit occupant loading and exiting calculations conforming to the NFPA 101 (Life Safety Code).

Fire Extinguishing System:

Identify the fire extinguishing system to be provided detailing design parameters and area to be protected listing criteria references. The specific hazard to be protected (i.e. light ordinary, extra, etc.) must be clearly outlined in addition to the density provided over the desired operating area. Calculations showing that water flow is adequate to meet sprinkler demands are required which necessitates a field survey by the A/E to determine actual water supply data. Design shall be in accordance with Mil-Handbook 1008-B and NFPA criteria as appropriate.

Fire Alarm and Detection Systems:

Clearly describe fire alarm and/or fire detection system to be provided. List all actuating and reporting devices and functions the system will perform including a sequence of operations. Identify, with special emphasis on the base wide fire reporting system (if applicable), any existing fire alarm equipment, annunciator locations, etc.

Basis of Electrical and Telecommunications Design Narrative

Introduction: The Basis of Design shall be a narrative presentation of facts that will clearly indicate the selected electrical, telecommunications, security, cable TV systems, and/or the proposed alternative systems to be analyzed.

Describe methods to obtain LEED points.

Primary Distribution:

Include the following:

a. Describe the primary source of power.

b. Where the source of power is located.

c. Statement relative to the adequacy of the primary supply at the point of take-off.

d. Electrical characteristics of power supply, or portion involved, including circuit interrupting and voltage regulation requirements.

e. Estimate total connected load and resulting KVA demand load by applying proper demand (state operating assumptions) and diversity factors.

f. Basis for selection of secondary voltage.

g. Distribution (overhead or underground).

h. Type of conductors, such as copper or aluminum.

i. Type of conduit or duct, if used.

j. A statement describing pertinent standards of design, such as voltage drop, physical characteristics of overhead or underground circuits, clearances, etc.

k. A statement identifying ownership of transformers, switchgear and distribution system.

Appendix D –Basis of Design Narrative 5 of 5 Revised Sept 2010

Primary Service Transformation to Secondary Service:

Include the following:

a. Primary and secondary voltage rating.

b. Describe the transformer or unit substation giving electrical characteristics.

c. Describe the proposed primary and secondary switchgear.

d. Describe the proposed primary and secondary protection devices.

Other Electrical Systems:

Describe the following:

a. Lighting systems

b. Power systems

c. Emergency lighting

d. Emergency power

e. Grounding system or systems

f. Telephone and telecommunications system

g. Other systems such as television, paging, call, etc.

h. Physical and electronic security features such as IDS, access control, tempest, etc.

Design Standards:

Provide a statement describing proposed pertinent standards of design, such as voltage regulation, lighting intensities, and type of lighting fixtures.