Attachment_4._21CES_Design_Guide.pdf

21st Civil Engineer Squadron

Design Guide

19 Dec 13

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4 19 Dec 2013

TABLE OF CONTENTS

Introduction

General Requirements

Civil

Landscape Architecture

Structural

Architectural

Fire Protection

Mechanical

Electrical

Communications

Environmental

Anti-Terrorism / Force Protection (ATFP)

Computer Aided Drafting (CAD) and Surveying

Construction Management

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4

Introduction

1. The process of project design and construction is based on a multitude of codes, regulations, and other governing documents. The 21st Civil Engineer

Squadron Design Guide has been written to address the unique requirements of Peterson Air Force Base (PAFB). In addition, not all aspects of a project’s requirements are addressed in codes and regulations. As such, this Design Guide provides information that may be missing from those other regulatory documents.

2. This document shall be used on all project designs produced for Peterson

Air Force Base (PAFB). Because requirements change frequently, this document will be updated periodically by 21CES. Please ensure that the most current edition of this document is obtained before beginning any design project. The edition of this document that is provided at the beginning of design shall continue on through design completion, regardless of future updates.

3. Where conflicts are found between this document and any other guidance, bring them to the attention of the 21CES project manager. Only the 21CES project manager may waive the requirements of this document.

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4

General Requirements

1. SUBMITTALS:

1.1. All documents submitted to PAFB for design review shall be provided on either CD or DVD. In addition, only three hard copies of the drawings shall be provided. Hard copies of other documents shall not be accepted and may be returned to the sender.

1.2. At the completion of the construction project, only one paper copy of the Operations and Maintenance (O&M) manuals shall be provided along with one electronic copy on CD or DVD. O&M manuals shall be separated out by trade (e.g. mechanical, electrical, plumbing, structural, etc.).

1.3. Final as-built drawings shall only be provided electronically on CD or

DVD. Hard copies are not allowed. As-built drawings shall be submitted as AutoCAD files only (see section on Computer Aided Drafting for CAD standards).

1.4. Document submittals, other than drawings, shall be submitted electronically in a format that is compatible with PAFB software including

Microsoft Office, PDF, TIFF, JPEG, BMP, XPS, and HTML. Other file formats may be submitted if approved by the 21CES project manager.

1.5. All design reviews requiring the involvement of organizations on PAFB will be handled by the 21CES project manager. Contractors are not to send documents or make contact with on-base organizations without the approval of the 21CES project manager.

2. UTILITY SERVICE INTERRUPTIONS: All interruptions shall be in accordance with the PAFB specification section 01100. Interruption of service for HVAC, Power, Lighting, Telephone, Fire Protection, Fire Detection, Water, Sewer, Gas, Roads, and Parking Lots are considered outages. All power outages shall be scheduled at least 14 calendar days prior to desired time. A utility outage form shall be approved 30 calendar days of notice.

3. FAA AIRSPACE OBSTRUCTIONS:

3.1. Any temporary equipment or construction which violates navigable airspace criteria shall require submission of an FAA Form 7460-1 at least

60 days prior to use. The contractor shall fill out the form and submit it to the Contracting Officer. The 21CES project manager will review the submittal and send it up through coordination channels and eventually to the FAA Denver, CO. Once 21CES receives the determination letter from the FAA, a copy will be sent to the contractor via the Contracting Officer.

The equipment shall not be used until the FAA has provided their written

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4 determination. Additional measures may be required of the contractor based on the determination by the FAA. The contractor is liable for any fines as a result of improper equipment use in accordance with 14 CFR, Part 77 and all applicable FAA Airport Advisory Circulars.

3.2. Objects which are no higher than 16 feet above grade or within a 45 degree shadow of a higher object do not require submission of a 7460-1.

3.3. All projects on the PAFB airfield parking apron will require a 7460-1.

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4

Civil

1. STORM DRAINAGE:

1.1. All storm drain pipe shall be corrugated polyethylene (CPE) with corrugated exterior wall and smooth interior wall, unless structural requirements dictate otherwise. Pipes smaller than 15-inch diameter may be of high density polyethylene (HDPE) or polyvinyl chloride (PVC).

Minimum pipe diameter shall be 12 inches unless approved by the government.

1.2. Side slopes for unlined earth channels shall be 1V:3H or less.

1.3. Erosion protection is required at and opposite the point of entry of side inflows into earth channels.

1.4. Certain areas of PAFB storm drainage eventually flows to retention basins. Since this storm water does not flow directly into waters of the

United States, the requirement for water quality control will be evaluated on a case-by-case basis by the government.

1.5. The use of new retention basins is strictly limited. It is preferred that detention basins be used with a detention time of no more than 24 hours. Consideration shall be given to limiting the possibility of creating an attractive haven for water fowl which could create a flight pattern across active airfield areas, thus introducing a bird strike hazard.

2. PAVEMENTS:

2.1. The use of permeable concrete paving systems shall be considered for low volume roads and all parking lots. Striping shall be accomplished using contrasting colored paver bricks as opposed to painting.

2.2. All motorcycle parking shall be constructed of portland cement concrete and striped with white paint.

3. UTILITIES

3.1. Water and sanitary sewer lines shall be polyvinyl chloride unless structural reasons dictate otherwise. Natural gas lines shall be polyethylene. All new utility lines shall be of non-metallic materials to the maximum extent possible. If metallic lines are used, adequate forms of corrosion control shall be provided in the form of passive systems (i.e.

sacrificial anodes). All plastic lines shall have copper tracer wire installed with them. Utility marking/warning tape should be installed in trench approximately 12” above utility line.

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4

3.2. Concrete pads for mechanical, electrical, and other types of utility services shall be constructed so that the bottom of the pad is at least 4 inches below finished subgrade and top of pad is at least 4 inches above finished grade. Pads shall be supported by a minimum 6-inch layer of gravel base course (CDOT Class 6) compacted to 90% modified Proctor density.

3.3. Boring under roads is the preferred method for utility installation.

4. TRAFFIC ENGINEERING

4.1. Design Vehicle: PAFB does receive deliveries from various sized vehicles. As such, all designs shall consider the requirement to accomodate a WB-67, unless design requirements dictate otherwise.

4.2. Parking Lots: Refer to the FEP. A minimum aisle width of 24 feet may be allowed if approved by the government.

5. SITE WORK

5.1. All site work shall be designed in accordance with the United States

Access Board (USAB) Public Rights-of-Way Guidelines. The USAB guidelines govern over any other requirements, such as the FEP or this design guide.

5.2. All pedestrian sidewalks shall be concrete unless required otherwise by the government. Minimum thickness shall be 4 inches. Control joints shall be spaced such that the ratio of longer to shorter dimension does not exceed 1.25:1. The maximum spacing on control joints shall be 24 times the slab thickness. Expansion joints shall be provided at no more than 50 feet per longitudinal section and at intersections with other objects. Edges of sidewalks shall have a 1/2 inch radius. The use of pre-molding plastic joint systems (e.g. Zip Strip) is not allowed.

5.3. Unless noted otherwise, step risers shall have a batter of 1 inch.

Concrete step nosing shall have a 1/2 inch radius.

5.4. The typical handrail and guardrail used at PAFB is manufactured from 1-1/4” nominal diameter standard steel pipe, painted. Other styles and designs may be considered. Architectural compatibility with other facilities in the vicinity and the type of architecture of the facility will drive the design.

5.5. Retaining walls may be either cast-in-place concrete or segmented masonry. Zero batter is preferred for both types of construction.

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4

Landscape Architecture

1. GENERAL PROVISIONS:

1.1. The base has traditionally had one overall philosophy regarding landscape design. This philosophy has been based heavily upon creating a well-landscaped image commensurate with a major Air Force

Headquarters base, while adhering to xeriscaping principles. There are several widely recognized and often used landscape details which have become an integral part of landscape design at Peterson AFB. These should be used routinely at all landscape projects. These details are listed here, and several are discussed in more detail elsewhere in this section.

1.2. The recognized standard for Peterson AFB is to plant deciduous (loses leaves) trees with a trunk diameter of 2 1/2 inches measured 1 foot above finished grade, and coniferous trees a minimum of ten feet tall. Plant shrubs in a minimum 5 gallon size which are at least 2 years old, to help ensure maximum survival rates. Perennials shall be a minimum 1 gallon.

1.3. At all landscape plant beds located on the ground plane, provide continuous separation from adjacent landscape surfaces. The separation material must be galvanized steel edging at all applications. This will help physically separate the planter mulches such as rock or wood from nearby materials such as turf grass or a different mulch type.

1.4. Provide permanent irrigation systems at all landscaped areas, including turf grass, trees, shrubs, ground covers, perennials, vines, and other living plant materials. One exception are areas of native grasses, which require watering for initial establishment only.

1.5. At all landscape areas to receive mulch, do not use underlayment fabrics. These have caused numerous maintenance problems and are undesirable for use.

1.6. The final grade for all landscape areas that receive mulching shall be smooth and sloped to drain prior to installation of the mulch materials.

Do not use the mulch material to create a level, finished surface over improperly smoothed and un-graded soil surfaces.

1.7. Approved mulch materials shall include 2” to 4” diameter blue/gray river cobble for rock and finely shredded cedar (gorilla hair or approved equal) for wood mulch. Limited use of 1.5” canyon red rock mulch may be utilized as approved by the government in areas directly adjacent to

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4 existing red rock. All materials shall be installed at a settled depth of 4” inches.

2. IRRIGATION SYSTEMS:

2.1. Back Flow Preventers: The contractor shall install backflow preventers in heated mechanical rooms. A commercial grade main control valve shall be installed immediately prior to the backflow preventer. Piping shall be installed to avoid exposure to the elements.

Use a sweep type sleeve with soft copper or like material in sleeve to exit building 20 inches below ground and to extend thru below or beyond all hard surfaces. When outdoor installation is required, install in an insulated removable enclosure. Outdoor installation will require that both sides of the installation be drainable. All installations shall meet or exceed current State of Colorado backflow preventer requirements.

Install a 4” thick concrete pad underneath outside backflow preventers.

2.2. Piping Systems: PVC piping shall be used for all installations. Class

200 PVC solvent welded pipes are required. Any pipe larger than 2 inches shall be welded with a heavy bodied glue.

2.3. Electric Valves: Irri-Trol 700 series ultra flow electric valves or

Rainbird electric valves are currently in use and meet all requirements.

Master valves shall be installed on each irrigation system. Utilize flow sensors that are compatible with central irrigation control system and base controllers.

2.4. Irrigation Controllers: Commercial rated controllers in all weather metal lockable cabinets and master valve capabilities are required for all installations. Pedestal or wall mount are both acceptable. External installations are required. All controllers shall be equipped with remote control technology and a permanent pigtail for remote operation. New controllers shall be sized with 25% spare zone capacity. All wall type controllers shall be mounted at 5 feet from ground level. Electric metal conduit shall be installed from the controller to 20” into the ground with a sweep. Each controller shall have its own dedicated electric breaker switch circuit. Toro Sentinel controllers are currently in use or RainBird compatible controllers with Retro Link Cards. Controller shall be compatible with the base central irrigation system management (Toro- Sentinel Central Software) and be capable of flow sensor monitoring.

Utilize and install Sentinel Retro Link Cards for existing Rain Bird Controllers on base as applicable for any modifications or renovation projects of existing irrigation systems.

2.5. Sprinkler Heads: The Rainbird 1800 series pop up spray with plastic

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4 nozzles on 1/2” risers are currently in use for small turf grass areas, shrubs, trees, and plant beds. For larger turf areas, I-20 Hunter rotor heads are currently in use. All heads shall be installed flush with the ground and perpendicular to level. Completely flush, clean, and adjust all heads to adequately cover all areas to be irrigated.

2.6. Sprinkler Head Riser Assemblies: On all systems with less than 40 psi operating pressure, a straight cut off type riser is required. Funny pipe will not be used. A triple swing joint is required for larger heads with pressure greater than 40 psi.

2.7. Drip Irrigation: Utilize minimum 3/4 inch drip tubing from irrigation main line for drip zones valves. Supply tubing shall be a minimum 12” below grade. Micro-tubing with drip emitters shall be designed to bring water from drip laterals to all trees, shrubs, and perennials below groundcover. Utilize non-clogging emitters on 6” stakes. Provide a minimum of two emitters to shrub material and four emitters to trees.

Quantity of emitters may vary based on water requirements for plant materials. Provide drip zone blowouts within a rock sump valve box which shall contain male adapters and PVC end plugs as applicable. Micro sprays may be allowed for certain applications as approved by the government. In-line check valves and filters shall be utilized as applicable for this system. Install an exterior flag-type monitoring component on each drip zone that will indicate when drip zone is operational. Flags are not required if flow sensors are installed to monitor operational flows.

2.8. Control Wiring: All wire shall be 14-gauge solid copper direct buried. Common wire shall be white in color. Individual control wires shall be the same color. A minimum of three spare third color wires shall be installed in all main line trenches regardless of direction (e.g. if the main line is installed in two directions, a total of six wires will be required from the controller). Wiring shall be installed below and to the side of main lines. Where control wires do not run with a main line, they shall be denoted on the red-line as-built drawings.

2.9. Wire Connectors: For in-ground wire connections, Spears DS 400 prefilled watertight connectors or their equivalent are currently in use.

Wire nuts shall not be used.

2.10. Valve Boxes: Valve boxes shall be a minimum of 10 inches in diameter. A minimum of 6 inches is acceptable for drip valves only. All valve boxes shall be installed flush with the finished grade. Stack or extend valve boxes as needed. Ametek valve boxes are currently in use.

Valve box lids shall be factory colored to match the surrounding ground

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4 plan treatment adjacent to box. Painting of lids is not acceptable.

2.11. Drain Valves: Drains shall be installed on low points of main lines to drain sections as needed for maintenance. All drains shall be brass straight valve assemblies. Automatic drains of any type will not be used.

2.12. Quick Couplers: Quick couplers shall be installed as a blow-out assemblies. Single lug 1-inch quick couplers shall be used.

2.13. Trenching: The contractor shall not use a pipe puller or vibratory plow to install pipe or control wires. All trenches shall be straight and smooth and of adequate depth for the type of pipe being installed. Main line depth shall be 18 to 20 inches below grade. Lateral pipe depth shall be 8 to 10 inches below grade.

2.14. Backfill and Compaction: All backfill material shall be clean soil, free of clods and rocks or any debris that could puncture pipelines.

Trenches shall only be compacted in 6-inch lifts and with a vibratory plate or trench foot jumping jack. Puddling, flooding, or any other means of compaction is not acceptable.

2.15. Sleeves: Class 200 PVC sleeves shall be installed under, and 1 foot beyond, all hard surfaces (e.g. sidewalks, driveways, parking lots, etc.).

All sleeves shall be straight without bends. Sleeves shall be 6” inside diameter, and installed 10 to 20 inches below grade for main lines and 8 to 10 inches below grade for lateral lines. Physical marking of sleeve locations is required and shall be designated by either stamping a small letter “s” (no larger than 2" square) onto the adjacent hardscape (ie.

walks or curb/gutter) while finishing or saw cutting a notch in the aforementioned hardscape locations after hardening. Sleeve markings shall be on both ends of sleeve location.

3. BLUEGRASS SOD AND/OR SEEDING SPECIFICATIONS:

Mixture Type Purity/Germination Pure Live Seed

25% Midnight 98/85 83.3% 25% Shamrock 98/85 83.3%

25% BroadwayTouchdown 98/85 83.3%

25% Allure Glade 98/85 83.3%

3.1. Kentucky Bluegrass seed shall be certified Blue Tag seed. The QAE personnel shall physically remove the blue tags from unopened bags.

3.2. Topsoil and Amendments: Amend Bluegrass Turf Areas with a minimum of 2” topsoil and compost and fertilizer per a required soils

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4 test. Compost shall be used at 3cyd/1000sf. Till topsoil and amendments to a 6” depth minimum.

4. NATIVE GRASS SEED SPECIFICATIONS:

4.1. Seed Mixture # 1 shall be used in Zone # 1 high pedestrian and visible areas as a transition from Kentucky Bluegrass areas to areas less visible and peripheral. Composition shall be 100 percent Tall Fescue Mixture to include three improved varieties of tall fescue and 6 percent

Kentucky Bluegrass as a binger for the grasses. Seeded at a rate of 350 lbs per acre.

4.2. Seed Mixture # 2 (Semi-Irrigated) shall be used in Zone # 2, less visible areas, medians, adjacent to rights of way, sides of buildings, and adjacent to parking lots. Seeded at a rate of 200 pounds per acre.

Pubescent wheatgrass ‘Luna’ 35% by weight

Western wheatgrass ‘Arriba’ 18% by weight Streambank wheatgrass 15% by weight

Slender wheatgrass 15% by weight

Thickspike wheatgrass 14% by weight Sheep fescue ‘Covar’ 3% by weight

4.3. Seed Mixture #3 Fine Fescue Mixture (Semi-Irrigated)

SR 51 Chewings Red Fescue 35% by weight Shade master Creeping Red Fescue 25% by weight

SR 5200 Creeping Red Fescue 20 % by weight SR 3200 Blue Fescue 15% by weight

Freedom Kentucky bluegrass 5% by weight

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4

4.4. Seed Mixture # 3 (Non-Irrigated) shall be used in all non-irrigated native areas. Watering shall be required for establishment only.

Slender wheatgrass 16% by weight

Western wheatgrass 14% by weight Thickspike wheatgrass 13% by weight

Streambank wheatgrass 12% by weight Pubescent wheatgrass 10% by weight

Sideoats grama ‘Vaughn’ 10% by weight Sand bluestem 10% by weight

Prairie sandreed 6% by weight Sheep fescue ‘Covar’ 3% by weight

Bluegrama ‘Lovington’ 3% by weight Littleblue ‘Pastura’ 3% by weight

Seeded at a rate of 45 pounds per acre.

4.5. For Additional Information on Native Grass Mixtures and

Maintenance, please refer to the Peterson Air Force Base Xeriscape Study & Design Guidelines.

5. SEED ESTABLISHMENT: Obtain a minimum of 75% germination establishment coverage within 90 days or as applicable per season dates and season. Temporary watering is required to achieve this establishment.

6. TOPSOIL: Many areas of PAFB have a sandy loam soil composition. A minimum of 2” of topsoil shall be amended over any disturbed areas. This mixture shall be tilled in before seeding. Utilize compost/organic matter per recommendations for Mix #1 & Fine Fescue Mix#2.

7. PRE-EMERGENT HERBICIDE: All landscape areas, with the exception of native seed areas as applicable, shall be sprayed with an approved pre-emergent herbicide to prevent weed growth prior to soil preparation of shrub beds and turf areas. Refer to Manufacturer recommendations

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4

8. FERTILIZER

8.1. Improved grounds, lawn areas, plant beds containing shrubs and perennial flowers, and semi-improved grounds with irrigation:

18% N 9% ammoniacal nitrogen

3% P 9% Other water soluble Nitrogen

3% K 3% Phosphate P2O5

4% Fe 3% Potash K2O

12% S

8.2. Primary plant food derived from ammonium sulphate, urea, ammoniate phosphate, and sulphate of potash

4% Fe

10% S

8.3. Micronutrients derived from ferrous sulphate monohydrate, ammonium sulphate, ammoniate phosphate and sulphuric acid

8.4. Application Rate

8.4.1. Improved Grounds (April and August applications): 1-1/4 lbs.

of N per 1,000 SF per application. Set fertilizer spreader on #6 *(1/2 inch port opening).

8.4.2. Plant Beds/Semi-Improved Grounds with Irrigation. (April applications): ¾ LB of N per 1,000 SF per application. Set fertilizer spreader on #5 *(3/8 inch port opening).

8.5. Product Description: Product must be completely dry, free flowing, dust free and non-segregating. Material must not cake or stick in a conventional rotary or drop type fertilizer spreader.

8.6. The fertilizer bag label shall list and certify the “complete specifications”. No exceptions or deviations to specifications.

8.7. This setting is to be used if the Contractor uses a Cyclone B-1 broadcast spreader. If another brand push spreader is approved the setting shall be approved 5 working days in advance by the QAE. Follow the equipment manufacturer’s application instructions. Do not fertilize if wind speed exceeds 10 miles per hour.

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4

9. TREES

9.1. Deciduous trees shall be of specimen quality, have a single straight stem and a fully branched crown.

9.2. Coniferous trees shall be of specimen quality, have a single straight stem (unless approved otherwise by the government) and be exceptionally heavy branched and well-shaped to within 6 inches from the ground.

9.3. Tree Trunk Protector: The below trunk protection system shall be placed at all new trees as applicable during initial establishment in all areas where protection from mowing and trimming is required.

10. AT/FP LANDSCAPES: Landscaping (including trees, shrubs, perennials, grasses) shall be required at the perimeter AT/FP zone to soften and buffer barrier elements. Approximately one tree for every 40 linear feet and one

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4 shrub every 6 linear feet. Plants may be grouped for better visual impact and shall be a variety of deciduous and evergreen materials. A minimum of one-half of the trees and shrubs shall be evergreen.

11. LANDSCAPE REQUIREMENTS AT BUILDING FOUNDATIONS: Turf grass and native grass shall not be permitted to abut building foundations due to irrigation and maintenance concerns. All facility foundations shall have a minimum 4'-0" wide buffer zone to any turf or native grass areas with a steel edge separator. This buffer area shall contain shredded wood mulch or approved rock mulch materials. ATFP approved plant material with drip irrigation and wood mulch is allowed and encouraged in foundation areas within 50 feet of the front entry. Two to four inch diameter river cobble rock can be utilized along low visability façade foundations as applicable.

Mechanical yard enclosures and screen wall applications shall be treated similar to building foundations with an appropriate buffer zone to adjacent turf areas.

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4

Structural Engineering

1. WIND LOADS: The pressure coefficient of 0.00256 as used in ASCE 7, may be replaced with the value of 0.00212. This accounts for an altitude at Peterson AFB of 6,175 ft MSL. Local values for wind speed, snow load, etc.

shall not be used. Only the values found in UFC 3-301-01 are acceptable.

2. SOIL BEARING CAPACITY: All new construction shall be based on a soil bearing capacity as determined by an independent testing laboratory from soil boring information. If soil borings are not possible or not deemed necessary by the government, then an assumed value of 2,000 psf shall be used. The use of this prescriptive value is subject to approval by the government.

3. MASONRY DESIGN: Special inspection shall be assumed in determining the compressive strength of masonry.

4. SERVICEABILITY REQUIREMENTS: Lateral drift limitations for wind loading shall be limited to 1/600 for masonry building exteriors and 1/400 for all other buildings, with a maximum limit of 3/8 inch per story.

5. CONCRETE:

5.1. Compressive Strength: The minimum nominal compressive strength shall be 3,000 psi. The typical compressive strength used for construction at Peterson AFB is 4,000 psi.

5.2. Interior Concrete Floor Slabs: All concrete slabs for interior use shall not have entrained air in the mix design.

5.3. Reinforcing Bars: Reinforcement for all concrete shall be 60,000 psi.

A higher value may be used if approved by the government.

5.4. Vapor Retarder: Interior slabs on grade shall have a 10 mil vapor retarder installed beneath the slab. Location of vapor retarder shall be in accordance with ACI recommendations.

5.5. Capillary barrier: Interior slabs on grade shall have a 6 inch thick capillary barrier installed beneath the slab. Location of capillary barrier shall be in accordance with ACI recommendations.

5.6. Slab On Grade (SOG) Reinforcing: Slabs on grade which are reinforced shall not use welded wire reinforcement less than D14. Fiber reinforcement may be used for crack control only and shall be polypropylene with a denier less than 100 and a nominal fiber length of 2 inches.

5.7. Exterior Door Stoops: The subgrade for door stoops shall be scarified to 6 inches and recompacted to 95 percent Modified Proctor density. A 12 inch layer of CDOT Class 6 base course shall be laid on top

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4 of the subgrade and compacted to 100 percent Modified Proctor density.

The concrete door stoop shall be doweled into the building foundation to prevent uplift due to frost heave.

6. USE OF OTHER DESIGN GUIDES: No other design guide shall be used at Peterson AFB for structural design.

7. SEALED DOCUMENTS: Documents produced by a contractor which require structural design shall be stamped and signed by a professional engineer or registered architect as the Engineer Of Record (EOR) in accordance with the requirements of the state within which they are registered.

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4

Architectural

1. DESIGN EXCELLENCE: Excellence in architectural design for both the interior and exterior of all facilities at Peterson Air Force Base is a primary goal for all design projects. Reaching this goal requires a commitment to architectural quality and a design that is sensitive to both the surrounding community and to the specific functional needs of the customer. Careful attention shall be given to the customers’ functional requirements, an aesthetic solution compatible with the local environment and this design guide, interior and exterior details, siting, energy efficiency, and economy of design including life cycle cost. New facilities shall be creative yet harmonious with those existing facilities that are considered to be architecturally appropriate. It should be recognized that quality design does not imply added expense, and can often provide savings in operating, maintenance, and construction costs. Materials for both interior and exterior of facilities shall be selected and used with proper consideration for aesthetics, constructability, durability, sustainability, and maintainability.

Design decisions and material selections must have the supporting data necessary to justify the design adopted. Buildings, additions and/or alterations shall be in keeping with Peterson AFB Facilities Excellence Plan

(FEP).

2. FACILILTIES EXCELLENCE PLAN: All designs shall comply with the Facilities Excellence Plan (FEP).

3. SITE DEVELOPMENT: The contractor shall utilize the Peterson AFB FEP in generating all options during the concept design phase of a project. The context of any given area of the base is addressed in the FEP and shall be strongly adhered to. The contractor shall maintain all site and facility dimensions specified in the Peterson AFB FEP and in the Peterson AFB General Plan. This includes such things as airfield limits, clear zones, glide slopes, and height limits. The development of the site for any project shall take into account impacts to adjacent facilities and ground sites.

4. SITE DESIGN FEATURES: All walks, stairs, ramps, and railings shall comply with those requirements laid out in the PAFB FEP. The appropriate parking lot set backs and distances from existing facilities will be closely scrutinized both from those requirements set out by the FEP but also looked at from an Antiterrorism/Force Protection (AT/FP) perspective.

5. BUILDING DESIGN: New design projects shall be a direct result of the most efficient layout of space in relationship to the proposed site. Space requirements for new projects shall be developed from UFC 4-610-01 and in conjunction with any other AF or DoD design guides, instructions, handbooks applicable to the specific function and/or type of facility (e.g. VQ’s, Clubs, 21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4

Chapels, CDC’s, etc.) The relationships of those spaces shall be developed from information obtained from the user. Required space for mechanical, electrical, and communication rooms shall be included in this space.

Renovation and repair projects need to be examined with the same requirements as a new building, but the design will be constrained to the existing space. Coordination of all parties involved in the design process is essential to ensure user needs are met without compromising design principals of this document. All applicable codes and smart design practices shall be incorporated into the design regardless of budget constraints.

6. BUILDING EXTERIOR:

6.1. Signs: Signs for accessable parking shall meet all Architectural

Barriers Act (ABA) requirements and shall comply with the Manual on Uniform Traffic Control Devices (MUTCD). All other exterior signs, such as facility and directional signs, shall meet requirements and dimensions shown in the FEP and shall comply with UFC 3-120-01 Air Force Sign

Standard.

6.2. Exterior Doors:

6.2.1. All exterior doors shall be 3 feet wide by 7 feet high by 1-3/4 inch thick in size, unless noted otherwise.

6.2.2. Exterior mechanical, electrical, and stair exit doors shall be SDI

A250.8, Level 3 extra heavy duty flush steel type with 16 gauge pressed steel frames. Doors shall be weather tight and insulated to meet a minimum R-value of 10. Exterior door frames shall have a thermal break to prevent thermal transfer. Doors shall be complete door and frame assemblies with weather-stripping, door bottoms, and threshold. All exit door locations shall have exit hardware devices.

6.2.3. All exterior steel doors which require air louvers shall have the "Y" sight-proof type louver blades and an interior mounted bird screen wire mesh protection.

6.2.4. All exterior aluminum doors shall meet or exceed heavy duty

(Grade II) requirements. Doors shall be full glazed with narrow stiles and rails. Air leakage of a single leaf weather-stripped door shall not exceed 0.5 cubic feet per minute of air per square foot of door. An anodized coating, Architectural Class II, 0.7 mil or thicker finish shall be provided on all aluminum doors, windows, and door frames.

6.2.5. All exterior doors shall open on to a concrete landing or stoop.

6.2.6. Exterior double doors shall have a removable center mullion

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4 frame assembly. The removable mullion shall have a locking device which is keyed to the door lock.

6.2.7. All exterior steel door and frame assemblies shall arrive to the job site with a factory applied A25 galvannealed finish and a primer finish. It shall be the contractor's option to have the door and frame receive a factory or field applied finish. Each door shall receive at least three final coats of paint.

6.2.8. The main entrance to facilities required to meet accessability requirements shall have a power operated pedestrian entry door complying with ABA. Large renovations of existing facilities shall be retrofitted to comply with this requirement. Door operators shall be hard wired and shall not use self-charging systems, battery power, or RF controllers.

6.3. Brick: Every effort shall be made to match existing brick when constructing additions or alterations. Any time brick is to be used as an exterior material, guidelines from the Rocky Mountain Masonry Institute shall be used for installation. Required expansion joints shall be clearly identified on elevation drawings so the contractor and inspectors can clearly identify joint locations. Brick dimension modules shall be used when laying out new floor plans in order to cut as little brick as possible to meet plan dimensions. A 1” minimum air space shall be used at all brick veneer conditions. A 2” air space is optimum. All air spaces shall be kept free of debris and mortar. Wall sheathing shall be kept dry.

Exterior face brick shall be installed at structural stem wall ledgers at 4 to 6 inches above finish grade. At no time shall brick units be placed below grade. All brick surfaces shall be pressure washed and cleaned prior to project closeout. Weep holes and continuous flashing shall be installed according to guidelines set by the Rocky Mountain Masonry

Institute. Cells of brick shall not be exposed. Contractor shall use solid brick units at applicable locations. When infilling an existing brick opening, contractor shall tooth-in full bricks into existing courses for a uniform finished appearance.

6.4. Windows and Window Glazing: Appearance, function, heat gain and loss, maintenance and operation safety, structural requirements, and suitability for the climate of Peterson AFB shall be considered when selecting windows. Thermally broken aluminum frames shall be used to maximize window thermal resistance values. Glazing sizes and properties shall be based on wind load requirements for Peterson AFB, security requirements, and AT/FP for the facility. All new exterior glazing must comply with UFC 3-400-01, Energy Conservation and UFC 4-010- 01, DoD Minimum Antiterrorism Standards for Buildings. Low “E” glass

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4 shall be used at all locations. Tinted glass is acceptable, however applied film is not allowed. For renovations and additions, the window color shall match that of the existing facility.

6.5. Entrance Vestibules: Entry vestibules shall be provided at all main entrances and at frequently used secondary entrances. All vestibules shall meet ABA requirements.

6.6. Exterior Wall Louvers: Architectural louvers must be of a storm-proof type. In areas subject to high winds, use two louvers or a louver with adjustable damper. Louvers greater than 4 feet in width shall require a mullion. Avoid installing louvers at locations where snow could drift against them. All louvers shall be provided with a factory applied powder coat or anodized finish.

6.7. Exterior Wall Insulation: Insulation materials shall be used to create the optimum degree of energy efficiency within the specified design criteria. Placement of insulation shall be clearly thought through and identified on the drawings in order to provide a continuous envelope.

Such things as structural beams, columns, and window mullions shall be insulated to prevent excessive condensation and frost. All uses of insulation shall include a careful analysis of the control of moisture vapor and be documented in the Design Analysis. Metal roofing is particularly likely to reach temperatures that can condense uncontrolled moisture vapor and lead to serious damage to the facility. Vapor retarder membranes and barriers shall be located on the drawings and identified in the specifications. Thermal resistance and/or conductance values for all building elements shall comply with ASHRAE 90.1. Calculations shall be included in the Design Analysis and the R-value for all insulation to be used shall be identified on the drawings.

6.8. Foundation Perimeter Insulation: Perimeter insulation shall be provided on the interior surface of foundation stem walls for all heated facilities. Thickness shall be a minimum of 2” (nominal). Insulation shall be placed on the inside face of the foundation, extending down to top of footing or to design frost depth, whichever is less.

6.9. Roofs: Projects requiring new roof construction shall use standing-seam metal, asphalt built-up, modified bitumen, or EPDM roofing systems per Air Force standards. Any other type of roof type shall be required to receive approval by the government. Check with the FEP to see if the building falls within a particular character area for roof preference. Projects that require an addition to the existing structure shall match the existing roofing system that is in place on the existing facility. All new roofs shall have a minimum 20-year warranty. Minimize

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4 light reflection and glare from roof angles and materials that could affect aircraft. Lightning protection shall be fully integrated and coordinated with the roof detailing and installation so that it does not jeopardize the roof warranty. All standing seam metal roofs shall be provided in a sufficient gauge and with intermediate rib stiffener profiles to avoid oil-canning issues. Standing seam metal roofs may also require snow guards to prevent sliding snow, based on location of doors and pedestrian paths. All sloped roofs without interior roof drain system shall have gutters and downspouts. All downspouts shall receive a splash-block. All metal roofing, soffit, fascia, capping, flashing, gutters, and downspout material shall be delivered with a factory applied finish in all cases. Open downspouts are discouraged. If open downspouts are used, they shall be factory finished on the inside to match the outside.

6.10. Roof Insulation: The preferred method for insulating the roof of a facility is to place the insulation on the structural roof deck. The minimum aged "R" value of the roofing insulation shall be in accordance with ASHRAE 90.1.

6.11. Roof Access: A roof access hatch shall be provided to facilitate roof inspection and the maintenance of roof mounted equipment. The hatch may be omitted on a single-story structure with a parapet height of less than 15 feet.

7. BUILDING INTERIOR:

7.1. Doors:

7.1.1. All interior doors shall be 3 feet wide by 7 feet high by 1-3/4 inch thick in size, unless noted otherwise.

7.1.2. All interior wood doors shall be a solid core type with a white birch veneer face on both sides. Hollow core doors may not be used.

Doors shall be a 5 ply or 7 ply construction. Wood grade shall be a premium grade with a rotary cut finish. All new interior wood doors shall have a stained and sealed clear coat finish unless specifically noted otherwise. Stained doors shall arrive at the job site with a factory finished.

7.1.3. Interior door lites shall have wood stops matching the finish of the door and shall be provided by the door manufacturer.

7.1.4. Metal doors shall be used at interior locations subject to above normal humidity, dampness, or damage. All interior steel doors shall have an A25 galvannealed coating. Doors fabricated of stainless

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4 steel, aluminum, or other special materials shall be used at interior locations subject to excessive humidity or dampness.

7.1.5. All interior steel doors and frames shall arrive to the job site with a factory applied primer finish. It shall be the Contractor's option to have the final door and frame paint finish as a factory or field applied finish. Number of paint coats shall be three (3).

7.1.6. Sound rated doors, frames and hardware shall be an assembly which is a manufacturer's standard product and shall have been tested in accordance with the manufacturer's testing requirements.

All hardware for sound rated doors shall be factory prepped as not to degrade the door’s rating. Door appearance shall have a wood finish to match other facility interior wood doors unless specifically noted otherwise.

7.1.7. Wire Glass, if required at fire rated windows, shall be rated in accordance with governing code requirements. Glass shall be Type II, Class 1, Quality q7, Form 1 with a polished stainless steel Mesh 1-diamond.

7.1.8. Door air louvers are not permitted on any interior door. Air ventilation requirements shall be achieved through wall and ceiling grilles.

7.1.9. All interior door frames shall be 2 inch width frames (head and jamb), 16 gauge minimum pressed steel. All frames shall have welded corners unless specifically noted otherwise.

7.2. Interior non load-bearing partitions: Partitions shall be minimally constructed of 362S125-33 steel studs at 16 inches on center with 5/8 inch Type X gypsum board unless otherwise required per design. Walls shall extend no less than 6 inches above suspended ceiling system. All exposed gypsum board wall surfaces shall be finished and painted.

7.3. Gypsum wallboard finish: Gypsum walls shall receive a minimum Level-4 gypsum finish with a light orange-peal finish. Areas that require a higher level of hygiene, such as restrooms and kitchens, shall receive a minimum Level-5 (smooth) gypsum finish. All gypsum finishes shall be in accordance with the Gypsum Association standards and recommendations.

7.4. Sound and vibration control: Noise control shall be considered in all facility designs. Both internal and external sound shall be controlled.

New and renovated facilities shall be oriented to minimize external noises

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4 and rooms shall be configured to maximize appropriate work environments as required. Interior walls requiring STC ratings shall extend to the underside of the structural deck above and shall be designed and constructed in accordance with UL and approved tested systems. All full height walls shall be sealed at the floor/ceiling connections. Blown-in or loose fill insulation will not be acceptable to insulate walls or ceilings for noise control. Provide ceiling tiles with a minimum 0.70 NRC for open offices, corridors, and large spaces.

Standard materials and installation procedures shall be incorporated into all projects that reduce sound and vibration. When constructing walls, floors, ceilings, and roofs, materials shall be selected that will impede transmission of equipment vibrations and noise between rooms and within rooms. Where indicated, interior walls shall extend up to the underside of structure and form an air-tight seal. Interior gypsum board walls shall be constructed floor to deck, receive full stud depth sound batt insulation and shall be acoustically sealed at the floor and upper structure attachment at the following locations:

Perimeter walls of an organization

Perimeter walls of toilets

Perimeter walls of conference rooms and classrooms

Perimeter walls of public corridors and stairs

Perimeter walls of the mechanical rooms & chases

Perimeter walls of the communications rooms, electrical rooms, and computer server rooms

Perimeter walls of high level private offices

Perimeter walls of computer server rooms

Interior walls located on the perimeter of mechanical and electrical rooms shall be insulated and acoustically sealed at the floor and upper structure attachment. A minimum of two 5/8 inch gypsum board layers shall be provided on the mechanical and electrical room wall side of the perimeter walls. Particular care shall be taken to avoid sound transmission from one space to another. All mechanical and electrical wall penetrations shall be constructed to avoid direct sound transmission conduction. Sound absorption links shall be used to prevent direct transfer of vibrations to the walls.

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4

7.5. Protecting partition finishes: Interior corner guards, either metal or plastic, shall be provided at outside corners. Bumper rails may be required where high impact or cart traffic is expected. Corner guards for administrative areas shall be solid color plastic, coordinating with wall color, and shall have 2-inch returns unless specifically noted otherwise.

Corner guards for high traffic and semi-industrial or industrial areas shall be stainless steel with a minimum of 3-inch returns. Corner guards shall extend from the top of the base to top of door frame.

7.6. Ceiling tile: Ceiling tile shall be a tegular 2’ x 2’ x 3/4” thick tile with a reveal edge on a 15/16” grid. Performance characteristics are Class A;

NRC-0.70; CAC-40; LR-0.86; and minimum recycled content of 82%.

Overage of 3% shall be provided and left at site.

7.7. Lights:

7.7.1. Lights in corridors, and administrative type spaces shall typically be a 2-foot by 2-foot recessed, direct/indirect fluorescent fixture with low-mercury green labels unless specifically called out differently on drawings or in the scope of work. Acrylic lensed fixtures are not acceptable.

7.7.2. Lighting in conference rooms, training rooms, and any special purpose rooms shall be zoned and multi-switched so as to facilitate the specific function of the space.

7.7.3. Restroom and locker room lavatory counter areas shall receive wall mounted commercial vanity lighting fixtures. Quantity shall be one per lavatory sink location. Fixture shall be a high end decorative

24”, fluorescent, horizontal, wall mount type with solid metal accent fins and solid metal horizontal bar trim. Fixture shall have a brushed aluminum finish and a clear coat metal protector. General restroom and locker room lighting shall be provided by recessed down lights.

7.8. Carpet:

7.8.1. Carpet design can include the use of one basic pattern, two bold patterns, and three solid carpets, depending on the intended design. Solid colored carpets can be used as a border around a room or as an inset within a room. Carpet tile, 24” x 24”, is standard unless noted otherwise. Overage of 3% shall be ordered and left at site for each pattern used.

7.8.2. Coordinated patterned carpets can be used together to create designs without the use of solid colored carpets. Creative design

21 Civil Engineer Squadron Design Guide

FA2517-13-R-5000

Attachment 4 solutions such as these are required on most projects. Refer to the

FEP for carpet criteria and requirements. Carpet shall meet the Air Force Carpet Standard ETL 07-4 and the following minimum requirements:

7.8.3. Minimum Pile Characteristics:

7.8.3.1. Basic Pattern: Pattern Level Loop; 1/10 Gauge; 26

ounces per square yard; Pile Density 8667

7.8.3.2. Bold Patterns: Multi-Level Pattern Loop; 1/12 Gauge; 26 ounces per square yard; Pile Density 6882

7.8.3.3. Solid Colored Carpets: Cut Pile; 1/10 Gauge; 30 ounces per square yard; Pile Density 8120.

7.8.4. Static Control: Static electricity build-up of the carpet shall be permanently less than 3.5 kilovolts at 70 degrees F and 20 percent relative humidity by the American Association of Textile Chemists and Colorists (AATCC 134 Test Method), Electrostatic Propensity of

Carpets.

7.8.5. Flammability and Critical Radiant Flux Requirements: Carpet shall comply with 16 CFR 1630 and have a minimum average critical radiant flux of .45 watts per square centimeter when tested in accordance with ASTM E 648.

7.8.6. Tuft Bind: Tuft bind force required to pull a tuft or loop free from carpet backing shall be a minimum 10 pound average force for loop pile and 3 pound for cut pile when tested in accordance with ASTM D 1335. A ten year warranty from the carpet manufacturer against edge ravel, de-lamination and tuft bind is required.

7.8.7. Installation: Carpet shall be installed by contractors/installers who are Certified Floor-covering Installers or manufacturer’s approved installers for warranties to be valid. Install all carpet in accordance with the installer’s guidelines. Adhesives and concrete primers shall be waterproof, nonflammable, meet local air-quality standards, and be as recommended by the carpet manufacturer.

Existing carpet that is removed shall be…