EGBA - IFB 2019-0012 - Twin Mountain Replacement (3 of 4).pdf

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TW

IN M

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UNTAIN TO

W

ER REPLACEM

ENT

FREM

O

NT CO

UNTY, CO

LO

RADO

38°30'55.30"N, 105°18'30.22"W

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1.0.

R

EFEREN

CED STAN

DARDS

THE D

ESIGN/B

UILD EN

TITY SHALL PERFO

RM

ITS W

O

RK IN A M

ANN

ER THAT SHALL M

EET O

R EXCEED THE REQ

UIREM

ENTS AND

RECO

M M

EN

DATIO

N S O

F THE FO

LLO

W

IN

G STAN

DARDS:

1.1.

The Project Plans and Specifications;

1.2.

The International Building Code (IBC) 2015;

1.3.

The TIA-222-H Structural Standards for Steel Antenna Tow ers and Antenna Supporting Structures w ith all Addenda;

1.4.

The Am erican Concrete Institute (ACI) 318-2014 Building Code Requirem ents for Structural Concrete;

1.5.

The Am erican Concrete Institute (ACI) 347 Recom m ended Practice for Concrete Fram ew ork;

1.6.

The Am erican Institute of Steel Construction (AISC) M anual of Steel Construction, 14th Edition;

1.7.

Research Council on Structural Connections (RCSC) Specification for Structural Joints Using High- Strength Bolts, August 1, 2014;

1.8.

Post-Tensioning Institute (PTI) Recom m endations for Prestressed Rock and Soil Anchors, DC35.1-14;

1.9.

The 2010 Am erican W elding Society (AW

S) D1.1;

1.10.

The O perational Safety &

Health Adm inistration (O

SHA);

1.11.

M otorola Standards and Guidelines for Com m unication Sites (R56), Chapters 4 and 5;

1.12.

State of Colorado, O ffice of the

State Architect approved building codes, located at https://w w w

.colorado.gov/pacific/osa/bldgcodes; and 1.13.

All other codes and standards adopted by jurisdictions having authority.

2.0.

SITE AND CO

N

STRUCTIO

N:

2.1.

Should site clearing be required or if additional roadw ay m aterial is needed, it shall be provided by the

Design/Build Entity. The State m ay not ow n the access roads to the sites and is not responsible to upgrade, m odify, or repair them for this project.

The Design/Build Entity shall identify all areas requiring excavation, backfill, earthm oving and erosion control for State review and approval prior to initiating earthw ork.

The Design/Build Entity shall have w ritten approval from the State for any earthw ork prior to initiating w ork. The Design/Build Entity shall follow all requirem ents of authorities having jurisdiction.

2.2.

The Design/Build Entity shall set up a concrete w ashout area and capture all w ash w ater and debris.

The Design/Build Entity shall ensure that no concrete is w asted on site unless approved by the State in w riting prior to concrete placem ent.

2.3.

The Design/Build Entity shall not create any perm anent m arking on any structure, the ground or natural object during the construction process.

2.4.

The Design/Build Entity shall notify the State in w riting a m inim um of thirty (30) days prior to storing any m aterials on the site and shall include a sum m ary list of m aterials to be stored in the notification.

2.5.

The Design/Build Entity shall not leave any hazardous m aterials on site unattended at any tim

e. All hazardous m aterials including fuels, oils and lubricants shall be rem oved from the site at the end of each day.

2.6.

The Design/Build Entity shall provide staking before constructing the required structures.

This requirem ent m ay be w aived by the State if deem ed unnecessary by the State upon w ritten request from the Design/Build entity.

2.7.

The Design/Build Entity shall not rem ove or alter any trees or vegetation w ithout prior w ritten approval of the State.

2.8.

The Design/Build Entity m ust notify the State a m inim um of thirty (30) days prior to starting earthw ork and m ust request w ritten perm ission prior to spreading any spoils at the site as the authorities having jurisdiction require notice.

2.9.

The Design/Build Entity shall install and m aintain erosion control devices that conform to the requirem ents of the authorities having jurisdiction. If failure to m aintain such devices results in legal action by authorities, any fines, penalties or legal fees associated w ith a failure to m aintain adequate erosion control during this project shall be the sole responsibility of the Design/Build Entity. The Design/Build Entity is responsible for subm itting an Erosion Control Plan a m inim um of thirty (30) days prior to prior to m obilization. The Plan shall describe the location, quantity and type of erosion control devices deem ed necessary by the Engineer of record.

2.10.

All excavations and backfill shall m eet the follow ing requirem ents:

2.10.1.

The State m ay reject unsuitable backfill m aterial at its discretion;

2.10.2.

The State reserves the right to m ake m inor adjustm ents in line or grades, as required;

2.10.3.

The Design/Build Entity shall not start excavation until the proposed w ork has been staked out and approved by the State.

2.10.4.

The Design/Build Entity shall suspend all earthw ork w hen satisfactory results cannot be obtained because of rain, freezing w eather, or other unsatisfactory conditions.

2.10.5.

The final and all tem porary grading shall be graded by the Design/Build Entity to provide proper surface drainage. The Design/Build Entity shall install all necessary tem porary drains and drainage ditches to intercept or divert surface w ater.

2.10.6.

The Design/Build Entity shall locate all underground utilities prior to initiating excavation.

Should the location of utilities know n to exist not be locatable, the Design/Build Entity shall hand-dig holes to locate the exact position. The Design/Build Entity is responsible for repair and dam age to any disrupted or dam aged utility during construction.

2.10.7.

The Design/Build Entity shall only stockpile soils at locations approved by the State. Stockpiles shall not exceed 15 feet in height.

2.10.8.

Backfill m aterial shall be placed in layers and shall be neat optim um m oisture content before rolling to obtain the prescribed com paction.

W etting or drying of the m aterial and m anipulation to secure uniform m oisture content throughout the layer m ay be required.

Should the State identify m aterial as too w et to perm it proper com paction by rolling, delay w ork on portions of the fill until the m aterial has dried to neat optim um m oisture.

2.10.9.

The Design/Build Entity shall not place frozen m aterial in the backfill, or place backfill m aterial upon frozen m aterial.

Design/Build Entity is responsible for covering or heating soils or excavation if necessary.

2.10.10.The Design/Build Entity shall be responsible for the stability of backfills and replace any portion, w hich has becom e displaced due to the Design/Build Entity’s operations.

2.10.11.Design/Build Entity shall ensure that the final grade is such that w ater w ill m ove aw ay from any new or existing footings.

2.10.12.The Design/Build Entity shall furnish adequate pum ping and piping equipm ent to handle w ater disposal and take all precautions to prevent w ater from entering excavations.

2.10.13.The Design/Build Entity shall use w ell points, w ells, etc., to low er and m aintain the static ground w ater level to at least 1-foot below the bottom of the excavation if necessary.

2.10.14.The Design/Build Entity shall keep excavations free of w ater w hile being prepared for foundations and until backfill has been com pleted.

2.10.15.The Design/Build Entity shall dispose of w ater, providing erosion protection from pum p discharge and protecting adjacent properties at all tim es.

2.10.16.Sedim ent control for all dew atering activities is required to protect vegetation and habitat dow nstream from the site. M ethods m ust be pre-approved by the State and the authorities having jurisdiction.

3.0.

CO

M M

UNICATIO

N TO

W

ER STRUCTURE:

3.1.

Site Location:

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Table 1 – Site Location

Com m unication Site Coordinates

Location

Tw in M ountain 38°30'55.30"N

105°18'30.22"W

The site is located in Frem ont County, Colorado approxim ately 8 m iles northw est of Cañon City.

3.2.

The Design/Build Entity shall design, supply and erect all necessary equipm ent for a fully functional one-hundred sixty (160) foot self-support com m unication tow er com pliant w ith all applicable law s, codes, standards, and the follow ing environm ental conditions:

Table 2 - Environm ental Criteria

Design Constraint Criteria

Basic W ind Speed (3 second gust: ASCE7-16)

112 M

PH

Service W ind Speed (3 second gust)

60 M

PH

Topo Category (M ethod 1)

Crest Height 1500 ft

Exposure Category C

Structure Class

III

Design Ice Thickness 0”

Ground Elevation Factor (K e ) – Elev: 7897’

0.751

3.3.

The tow er design shall support the follow ing existing and future antennae and associated transm ission lines and not be loaded in excess of 80% of its full capacity:

Table 3 – Tow er Equipm ent Table

ID

Condition Type

M ount

Elev.

Approx.

Azim uth W aveguide /Coax

D/B E

10’ O m ni

DTR Tow er top am p

160’

160’

7/8”

½ ”(Test Port)

D/B E

20’ Fourbay

State 3/VLAW 160’

7/8”

Delete

8’ M icrow ave Dish

Pueblo 155’

7/8” &

1 7/8”

D/B E

20’ Fourbay

NO

AA

130’

7/8”

D/B E

10’ O m ni

DTR TX

128’

7/8”

ID

Condition Type

M ount

Elev.

Approx.

Azim uth W aveguide /Coax

D/B E

20’ Fourbay

Frem ont Cty

117’

7/8”

D/B E

20’ Fourbay

USFS Blue 117’

7/8”

D/B E

3’ O m ni

USFS O

NE

83’

1/2”

Delete

8’ M icrow ave Dish

Coaldale 77’

7/8” &

1 1/4”

D/B E

20’ O m ni

ICE

55’

1/2”

D/B E

4’ O m ni

BLM

50’

1/2”

Delete

20’ O m ni 50’

½

D/B E

4’ M icrow ave Dish

W APA reuse

39’

1 1/4”

D/B E

6’ M icrow ave Dish

Deer Peak reuse 35’

1 1/4”

Delete

6’ M icrow ave Dish

Tenderfoot II 30’

1 1/4”

Delete

4’ M icrow ave Dish

ECC CF

29’

1 1/4”

Aviat

8’ M icrow ave Dish

UXA8-U57A RF

Vertical and Horizontal Polarization

Coaldale

75’x2

E65x2

Aviat

3’ M icrow ave Dish

SC3-W

100A

Vertical Polarization

ECC CF

23’

E65

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ID

Condition Type

M ount

Elev.

Approx.

Azim uth W aveguide /Coax

Aviat

8’ M icrow ave Dish

UXA8-U57A LF

Vertical Polarization

Horizontal is not used

Pueblo M ain

155’

E65

Aviat

6’ M icrow ave Dish

SB6-W

60C

Vertical Polarization Pueblo Diversity

125’

E65

Aviat

8’ M icrow ave Dish Horizontal Polarization

Deer Peak 20’

E65

Aviat

6’ M icrow ave Dish

PAD6-65B

Vertical Polarization Tenderfoot II

25’

E65

Future

8’ M icrow ave Dish W ithout Radom e

E65

Future

8’ M icrow ave Dish W ithout Radom e

E65

Aviat:

The Design/Build Entity shall install new equipm ent provided by Aviat, including antenna, w aveguide, m ounts and grounding kits that m eet the requirem ents of Section 8.0 this specification. The Design/Build entity is not responsible for cutting over the dishes, this w ill be com pleted by others. The Design/Build entity is responsible for rem oving the existing dishes from the old tow er after cut over. Dishes, w aveguide, hangers, connectors and ground kits to be provided by provided by Aviat.

Future:

Tow er shall be designed for the load of the specified antenna, but no equipm ent shall be supplied.

D/B E:

The Design/Build Entity w ill relocate the specified equipm ent that w ill be provided by the state or reused. The Design/Build entity shall supply and install coax, m ounts and grounding kits that m eet the requirem ents of Section 8.0 this specification. The Design/Build entity is responsible for cutting over the equipm ent.

Delete:

The Design/Build Entity shall rem ove and dispose of the antenna. The new tow er does not need to be designed to carry this equipm ent.

3.4.

The Design/Build Entity shall supply all equipm ent necessary to transport and erect the tow er per all applicable law s, codes and standards.

3.5.

All structural tow er com ponents shall be of steel construction.

3.6.

All steel com ponents shall be fabricated in the United States of Am erica from m aterials produced in the

United States of Am erica.

3.7.

M ill certificates shall be subm itted to the State for all tow er com ponents BEFO

RE m aterials are delivered on site for approval. Any m aterials delivered on site w ithout prior approval by the State m ay be rejected and shall be replaced at the Design/Build Entity’s expense. A com plete set of m ill certificates shall be subm itted in one package that clearly indicates w here each com ponent is used on the structure. Incom plete subm ittals w ill be rejected w ithout review

. Certificates shall, at a m inim um be supplied for the tow er:

3.7.1.

Legs;

3.7.2.

Bracing;

3.7.3.

Flanges and Tab Plates;

3.7.4.

Bolt Assem blies;

3.7.5.

Anchor Bolts;

3.7.6.

Step Bolts;

3.7.7.

M ounts;

3.7.8.

Clim bing and W aveguide Ladders; and

3.7.9.

Threaded Rods and Associated Com ponents for Rock Anchors.

3.8.

All tow er com ponents shall be, after fabrication, hot dip galvanized in conform ance w ith ASTM

A123 or A153, as appropriate, w ith no less than tw o (2) ounces of zinc per square foot of surface area throughout, including nuts and bolts.

3.9.

All structural bolts shall be galvanized ASTM A325 Type 1 and be considered high-strength bolted connections. O nly new high-strength bolts shall be used. Should a connection be torqued and then disassem bled, the used bolts shall be discarded and replaced w ith new bolts.

3.10.

All nuts paired w ith high-strength bolts shall be galvanized heavy hex nuts conform ing to ASTM A563

Gr. DH w ith supplem entary requirem ents “S1” and S2”.

3.11.

All w ashers paired w ith high strength-bolts shall be galvanized hardened flat w ashers conform ing to

ASTM

F436 Type 1.

3.12.

If the bolts provided by the tow er m anufacturer are not sufficient length to accom m odate all necessary hardw are the vendor shall replace the bolts w ith ones of sufficient length at no cost to the State.

3.13.

All bolted connections shall be installed w ith a nut locking device. ANCO

® style nuts or any other nut that dam ages the galvanization on the bolt w ill not be accepted. All bolts shall be installed nut-end-up.

3.14.

All bolts, w ashers and nuts shall be supplied from one vendor as a fastener assem bly, as defined by

RCSC.

3.15.

All tow er leg m em bers shall be fabricated from pipes or solid rounds. Tow er leg m em bers constructed from a lattice design w ill not be accepted.

3.16.

All tow er bracing shall be fabricated from angle m em bers.

3.17.

All structural m em bers shall be fabricated in such a m anner to prevent ponding of w ater and w eep holes shall be installed in the bottom of all tubular m em bers. W eep holes in pipe sections shall be at least 0.25 inches in diam eter and 0.375 inches in diam eter for tubes greater than 2 inches in diam eter.

W eep holes that are cast into grout placed below the tow er baseplate shall be at least 0.75” in diam eter.

3.18.

Provisions shall be m ade by the fabricator such that the erector can attach the site grounding system to each tow er leg on a plate, w elded norm al to the tow er leg, w hich does not com prom ise the strength of the structure. The plate shall be located at the base of the structure and m easure approxim ately 2”x4”x1/4”. Exact size and final location to be determ ined by the fabricator.

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3.19.

All w elding shall conform to the Am erican W elding Society (AW

S) Structural W elding Code – Steel, ANSI/AW

S D1.1.

3.20.

The tow er and foundations shall m eet or exceed all specifications of ANSI/TIA-222-H including all addenda or latest revision and m ust conform to the m anufacturer’s foundation and erection criteria.

3.21.

The tow ers shall be designed for the environm ental criteria specified in Table 2 - Environm ental Criteria 3.22.

The tow er shall not tw ist m ore than 1/2 degree (0.5°) under service w ind conditions.

3.23.

Under service w ind conditions, no point on the tow er shall deflect laterally m ore than five (5) percent of a distance m easured from the top of the foundation to that point. Deflections shall be m easured in a plane parallel to the ground and distances shall be m easured in the vertical direction perpendicular to the ground plane.

3.24.

The tow er shall have a m inim um face w idth of thirty-six (36) inches w hen m easured from the center of a leg to the center of an adjacent leg.

3.25.

The tow er shall be equipped w ith a clim bing ladder spanning from the ground to the top of the tow er structure.

The ladder shall m eet the requirem ents of TIA-222-H Section 12 and shall in no circum stances have rung spacing larger than w hat is allow by Section 12.5.1.

3.26.

The tow er shall be supplied w ith step bolts on all three legs of the tow er w here the spacing of the diagonal bracing exceeds 5 feet. Additionally, the tow er shall be supplied w ith clim bing pegs the run from the base of the tow er to the top on the leg opposite of the ladder.

3.27.

The clim bing pegs shall be supplied w ith “Tuf-Tug Step Bolt Anchor Bracket – Flat” on all locations on the tow er that have clim bing pegs and the diagonal bracing spacing exceeds 5 feet.

3.28.

The tow er shall be designed for and equipped w ith a safety-clim bing system including four (4) rem ovable m obile fall arrestors w ith carabiners and a tow er m ounted clim bing cable com pliant w ith

O SHA 1910.27 and ANSI A14.3-1984. The safety-clim b system shall be installed at the ladder location and allow a clim ber to rem ain connected to the safety-clim b for the entire length of the ladder. The safety clim b cable shall be a 3/8 (0.375) inch diam eter cable constructed from stainless steel and shall com ply w ith the stated requirem ents.

3.29.

The tow er shall be equipped w ith a face-m ounted w aveguide ladder spanning from ten (10) feet above ground level to w ithin five (5) feet of the top of the tow

er. The ladder shall m easure at least 36” w ide and provide m ounting locations for at least 12 snap in hangers; 7/16”Ø and 3/4”Ø

. The ladder rung spacing shall not exceed 39 1/4”.

W aveguide ladders shall be supplied w ith all necessary snap in hangers for the w aveguide and coax cables.

3.30.

All equipm ent m ounted on the tow er shall be handled and installed in accordance w ith m anufacturer’s recom m endations to prevent dam age to the equipm ent or the tow er.

3.31.

Design/Build Entity shall provide anchor bolts and tem plates as part of tow er.

3.32.

The tow er shall be properly protected during transport, storage and erection as to avoid dam age to the tow er or the tow er m em ber’s finish. Dam age to any tow er com ponent shall be cause for replacem ent or repair by the Design/Build Entity at the discretion of the State and at no additional cost to the State.

3.33.

The tow er shall not be loaded in any w ay until the tow er is a com plete functioning structural system w ithout prior w ritten consent from the Engineer of Record.

3.34.

The tow er shall be designed and constructed such that trained crew s w ithout the use of supplem entary field processes such as w elding, drilling, cutting, burning, grinding, or ream ing, can erect it in the field.

It shall also be designed to consider erection forces to be used.

3.35.

The tow er fabricator shall have an in-house structural steel fabrication quality control program that m eets or exceeds the requirem ents for Category II Certification as set forth by the AISC Q uality Certification Program

. Any tow er fabricator that does not carry an AISC certification shall subm it, w ith their bid, docum ents that outline their quality control program

3.36.

The tow er calculations and draw ings shall be signed and sealed by a Colorado Registered Professional Engineer. A copy of draw ings and m aterials list shall be subm itted to the State for approval prior to procuring m aterials and erection.

3.37.

The State m ay elect to have its designated engineer conduct an independent static analysis of the subm itted tow er design. Should the static analysis of the Design/Build Entity’s design require m odifications to the tow er, any costs associated w ith such m odifications shall be the responsibility of the Design/Build Entity. Disagreem ents in the results of the State’s engineer and Design/Build Entity’s analyses shall be resolved by a m utually agreed upon qualified professional engineer acting as a third party. The State and the Design/Build Entity shall share the cost of the third party analysis equally. The tow er shall be erected in a m anner that w ill not affect the transm ission of the existing State tow er or any other tow ers in the area.

3.38.

The Design/Build Entity shall be fam iliar and adhere to all local building codes, ordinances, and licenses required for erecting the tow

er. Procedures shall be in accordance w ith the safety rules and regulations of the industry.

3.39.

The tow er shall be erected in accordance w ith the erection draw ings approved by the State. Under no circum stances should the draw ings or tow er construction be altered or m odified w ithout the specific perm ission of the Design/Build Entity’s Engineer of Record and the State.

3.40.

The Design/Build Entity shall erect the tow er such that the tow er is plum b w ithin 1/4 percent (0.25% of the vertical distance betw een levels, the tw ist does not exceed 1/2 degree (0.5°) betw een any tw o (2)elevations and the tw ist over the structure height does not exceed five (5) degrees.

3.41.

The tow er, in its final erected position, shall be surveyed for plum bness and tw ist. A w ritten report shall docum ent the am ount of variation from true vertical and the am ount of tw ist of the tow er m ast at the end of each section. If the tow er exceeds the verticality and tw ist requirem ents of Section 3.40, the State shall be inform ed and the O w ner's Engineer, if necessary, w ill determ ine an approved corrective procedure. Any costs associated w ith such corrective procedure shall be the responsibility of the Design/Build Entity.

3.42.

W hen handling tow er sections, all possible precautions shall be taken to prevent the bottom of the section from contacting the ground surface. M ud, dirt and other foreign m atter shall be w ashed off w ith potable w ater prior to erecting the steel.

3.43.

Fit-up problem s and contem plated corrective actions shall be reported to the State. Field corrections or m odifications including the replacem ent of any tow er com ponents shall not be im plem ented w ithout prior approval from the State.

3.44.

The Design/Build Entity shall m ake provisions for tow er clim bers to clean m ud and dirt off their feet at the tow er base prior to clim bing per the details in this draw ing package.

3.45.

The Design/Build Entity shall verify that the as-built foundations, anchors and anchor bolts are com patible w ith the tow er structure prior to initiating assem bly of the tow er.

3.46.

The Design/Build Entity shall rem ove all tow er erection and related debris upon com pletion of the tow er and prior to final inspection.

4.0.

TO

W

ER FO

UNDATIO

NS

4.1.

The Design/Build Entity shall design, supply and construct all necessary com ponents for a fully functional tow er foundation/anchor system , com pliant w ith all applicable law s, codes and standards.

The Design/Build Entity shall supply all equipm ent necessary to transport and construct the foundation(s)/anchor(s) according to all applicable law s, codes and standards.

4.2.

The Design/Build Entity shall design foundations for the m axim um calculated loads determ ined during design.

4.3.

Foundations shall be designed and constructed per the standards referenced in Section 1.0.

4.4.

Concrete shall m eet or exceed the requirem ents of ACI 318 for type F2 concrete.

4.5.

Foundation reinforcing shall conform to ASTM A615, Fy =60 ksi.

4.6.

Reinforcing shall be detailed according to the “ACI Detailing M anual SP-66 (04)”.

4.7.

M inim um reinforcem ent cover shall be:

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4.7.1.

Concrete placed against earth: three (3) inches

4.7.2.

Concrete placed in form s, but exposed to earth (bars #5 and sm aller): one and one-half (1.5) inches 4.7.3.

Concrete placed in form s, but exposed to earth (bars larger than #5): tw o (2) inches 4.7.4.

Concrete not exposed to earth (bars #5 and sm aller): one and one-half (1.5) inches

4.7.5.

Concrete not exposed to earth (bars larger than #5): tw o (2) inches 4.7.6.

Concrete construction techniques shall conform to the requirem ents of ACI 318, Part 9.

4.7.7.

Concrete shall have the follow ing properties, as tested by the Design/Build

Entity’s Independent Special Inspector unless requested by the Engineer of Record in w riting and approved by the State in w riting:

Table 4 - Concrete Specifications

Specification Requirem ents

M inim um 28-Day Com pressive Strength (f’c ) 4,500 psi

M axim um w

/cm 0.45

Slum p

3”-5”

Air Entrainm ent

Per ACI 318-14 Table 19.3.3.1

Concrete shall be tested prior to placem ent.

Concrete not m eeting these requirem ents m ay be rejected by the State or their representative at their sole discretion. Adding w ater or air entrainm ent on site w ill only be allow ed w hen approved by the State’s Engineer and the concrete supplier.

4.8.

Concrete not placed w ithin 90 m inutes of charging m ay be rejected at the sole discretion of the State or its representative.

4.9.

All concrete shall be vibrated except for slabs 4” or less thick.

4.10.

All concrete exposed after backfill, except for concrete placed against form s, shall be floated and have a broom finish. Horizontal concrete surfaces below finished grade do not require floating but shall be leveled to w ithin +1”/-0” of plan elevation.

4.11.

Foundations shall not be loaded in any w ay until tests indicate that the concrete has reached full design strength (100%

). An exception to this requirem ent m ay be m ade if agreed to in w riting by the Engineer of Record and the State.

4.12.

Concrete placem ent in cold or hot conditions shall follow all requirem ents of ACI.

4.13.

Concrete testing shall be in accordance w ith ACI 318, Section 5.6 and shall m eet the follow ing requirem ents:

4.13.1.

At a m inim um

, three (3) 4 by 8 in. or tw o (2) 6 by 12 in. concrete test cylinders shall be taken from each concrete truck to be tested at 28 days. An additional tw o (2) concrete test cylinders shall be taken m id-pour for any concrete rem aining in the truck on site m ore than 40 m inutes after arrival on site and each 20 m inutes after that tim

e. If the Design/Build Entity w ants to take additional cylinders to be tested early, this can be done at their discretion;

4.13.2.

All concrete test cylinders shall rem ain on site in am bient conditions for a m inim um of 48 hours follow ing concrete placem ent;

4.13.3.

The requirem ent for five (5) concrete tests m inim um per Section 5.6.2.2 of ACI 318 can be w aived as long as the frequency and testing m eet the other requirem ents of the section and this Specification;

4.13.4.

The concrete tests shall be taken from concrete just prior to placem ent and after any addition of w ater or adm ixtures. If the concrete does not m eet specifications of the m ix, corrective actions m ay be required, or the batch m ay be rejected at the discretion of O IT. Concrete m ixed on site shall have the first and last batch (if different) tested each day; and

4.13.5.

All concrete test specim ens shall be taken and prepared by a qualified independent inspector at the expense of the Design/Build Entity.

4.14.

Prior to concrete placem ent, all excavations, form w ork and reinforcing shall be inspected by the State’s representative.

4.15.

Concrete inspection reports shall be subm itted by the Design/Build Entity to the State w ithin three (3) days of concrete placem ent.

4.16.

Anchor bolts shall be fabricated from m aterial conform ing to ASTM F1554 Grade 105 and hot dip galvanized. The m inim um length of galvanizing shall be the bolt projection plus three inches.

4.17.

Anchor bolts shall be fitted w ith tw o (2) heavy hex nuts each conform ing to ASTM A563 Grade A and hardened flat w ashers conform ing to ASTM F436. All shall be hot dip galvanized.

4.18.

Unless approved by the State or its representative, all foundations shall be poured from the low est elevation of the foundation to the highest in that order.

4.19.

All backfill shall be per the recom m endations of the geotechnical report and shall at a m axim um placed, com pacted and tested in eight (8) inch lifts to a m inim um com paction of ninety-five percent

(95% ) standard proctor per ASTM

D1557 prior to placem ent of the next layer.

4.20.

Foundations shall be placed w ithin tw o (2) inches of the as designed location and all anchor bolts shall be placed w ithin 1/4 (0.25) inch of plan position relative to adjacent foundations and w ithin 1/16 (0.0625) inch of plan position relative to adjacent bolts of the sam e pattern. Anchor bolts shall be installed plum b vertical w ithin 1/32 (0.03125) inch top to bottom

4.21.

All shoring required for foundation construction shall be designed by a Registered Professional Engineer.

4.22.

Cold joints in the foundations shall be cause for rejection if not approved prior to concrete placem ent by the Design/Build Entity’s Engineer of Record.

4.23.

The foundation shall be installed w ith a UFER ground system consisting of tw o sections of sacrificial #4 rebar exotherm ically w elded to 2/0 bare stranded copper pig-tails. The rebar shall be 20’ long or the length of the foundation, w hichever is less. The pig-tails shall be attached to the ground ring as show n in the draw ings after the foundation is poured.

4.24.

Rock Anchor System

4.24.1.

Rock Anchors shall be constructed from pre-tensioned threaded rod and be designed per the requirem ents of PTI DC35.1-14.

4.24.2.

Threaded rods to be fabricated from steel w ith an ultim ate stress of 150 KSI m eeting the requirem ents of ASTM A722.

4.24.3.

All steel com ponents of the rock anchor system to be hot-dip galvanized in accordance w ith

ASTM

A-153.

4.24.4.

A m inim um of one anchor per foundation shall be proof tested per PTI Table 8.2 using a 15 m inute hold tim e at 1.33 DL.

4.25.

The tow er foundation calculations and draw ings are to be signed and sealed by a Registered Colorado

Professional Engineer.

A copy of draw ings and m aterials list shall be subm itted to the State for approval prior to procuring m aterials and construction.

5.0.

TO

W

ER R

EM

O

VAL

5.1.

The existing tow er shall be disassem bled by the Design/Build Entity once given approval by the State.

Design/Build Entity shall assum e this could be up to six (6) m onths after new tow er is built and shall include re-m obilization costs in bid.

5.2.

The existing tow er com ponents and hardw are shall not be dam aged during the disassem bly process w ithout prior authorization by the State in w riting.

just prio prio prio ppriorriorioriorioriorioriorioririorriorrioioioioioioiiioioioiiooooooooooooooooor to r to r tr to rto rto rto r r to r to rrtrto rrtr to rrto r to rto rto rto rrto rto rto rto rto rto rto rto rto rto rto rrrttotottoooooooooooooooooooo pla pla pla pla ppla pla ppla pla pla pla plpla ppla pla pla ppppla pla pla pla plplpllallalllalalalallaaaaaaaacem e cem cececem cem cem cem ccccecem cem ceccem cem ccem ccececcccecem ccceccecemeemeeeeeeeeemm nt an not m ee m ee m ee m ee m ee mm ee m ee m ee mm ee m ee m ee m ee m ee mmm ee m ee m ee m ee mm ee mmmmm ee mmm ee m ee m ee m ee m ee mm ee mmmm ee m e m e mmmm e mmm eeeeeeeeeeeet sp t sp t sp t s t sp t s t sp t sp t sp t s ttt sp t s t s t sp ttttt sp t sp t sp tt sp ttttttt sspssspsspspspspppppppppppecif ecif ecif ecif ecif ecif ecif ecif eecif eecif eci ececi ecif eecif ecififiiifiiifficat icat icat icat icicat icat icat icaiciicaicat iicat cacat ccat cat caccat cataaataaaaataataattions ion ion ions ions iion ion ion ion ion ions ionoons ons onononooononoononononoonnnnnnnn of

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5.3.

The existing tow er shall be disassem bled w ithout dam age to the existing facilities or the new tow er.

5.4.

The existing tow er shall be disassem bled in a m anner that w ill not affect the transm ission of the new tow er or adjacent tow ers.

5.5.

The State reserves the right to retain any or all com ponents of the disassem bled tow er and hardw are for its use. The Design/Build Entity shall stack the com ponents that the State w ishes to retain in a location on site and in a m anner acceptable to the State. Upon notification by the State, the existing tow er, abandoned portions of the cable bridge and w aveguide shall becom e the property of the

Design/Build Entity and shall be disposed of in a m anner consistent w ith all applicable law s.

5.6.

The existing antennae, m ounts and equipm ent m ounted on the existing tow er shall rem ain the property of the State and shall be rem oved by the Design/Build Entity and placed on-site in a m anner approved by the State and only after the State has given approval. The Design/Build Entity shall replace any equipm ent dam aged during this process. The Design/Build Entity shall have adequate insurance to cover any dam age to the

State’s equipm ent or structures.

5.7.

The foundations for the existing tow er need to be rem oved to a m inim um of 12” below finished grade and be covered w ith native soil.

6.0.

CABLE B

RIDGE

6.1.

The Design/Build Entity shall design, supply and erect all necessary equipm ent for a fully functional cable bridge and foundation that is com pliant w ith all applicable law s, codes and standards. The Design/Build Entity shall supply all equipm ent necessary to transport and erect the bridge and foundation(s) according to all applicable law s, codes and standards.

6.2.

The cable bridge shall com ply w ith the follow ing criteria:

6.2.1.

The cable bridge shall be nom inally ten (10) feet above grade in elevation;

6.2.2.

The cable bridge shall be a m inim um of tw enty-four (24) inches w ide;

6.2.3.

The cable bridge shall have the appropriate grating or other protective covering to protect the w aveguides from falling ice. The ice shield shall be designed to w ithstand a total uniform loading of one-hundred (100) pounds per square foot w ith factors of safety defined by AISC.

The ice shield grating or other protective surface shall be designed for easy replacem ent in the field;

6.2.4.

All structural bolts shall be galvanized ASTM A307 and shall be considered non-high-strength bolts;

6.2.5.

All bolted connections shall be installed w ith a nut locking device. All bolts shall be installed nut-end-up;

6.2.6.

All steel including nuts, w ashers and hardw are shall be galvanized in conform ance w ith ASTM

A123 or A153 as appropriate;

6.2.7.

All structural m em bers shall be fabricated in such a m anner to prevent ponding of w ater and w eep holes shall be installed in the bottom of all tubular m em bers. W eep holes shall be at least 0.25 inches in diam eter and 0.375 inches in diam eter for tubes greater than 2 inches in diam eter; and, 6.2.8.

All steel fabrication, assem bly and erection shall be per the standards referenced in Section 1.0.

6.3.

All equipm ent m ounted on the cable bridge shall be handled and installed in accordance w ith m anufacturer’s recom m endations to prevent dam age to the equipm ent.

6.4.

The cable bridge shall be properly protected during transport, storage and erection to avoid dam age to the structure and the structure’s finish. Dam age to any portion of the cable bridge shall be cause for replacem ent or repair by the Design/Build Entity at the discretion of the State and at no additional cost to the State.

6.5.

The cable bridge shall not be loaded in any w ay until the cable bridge is a com plete system and as designed.

6.6.

A copy of draw ings and m aterials list shall be subm itted to the State for approval prior to procuring m aterials and construction.

7.0.

G

RO

UNDING SYSTEM

7.1.

The Design/Build Entity shall supply and install all necessary equipm ent for a fully functional grounding system com pliant w ith all applicable law s, codes and standards. The Design/Build Entity shall supply all equipm ent necessary to transport and install the system according to all applicable law s, codes and standards. The grounding system shall m eet the m ore restrictive requirem ents of this specification and the standards as referenced in Section 1.0.

7.2.

The ground system shall be constructed as show n in the grounding plan included in this draw ing package.

7.3.

All grounding system com ponents shall be UL Listed.

7.4.

The ground ring shall be constructed from

2/0 bare stranded copper w ire and be buried a m inim um of 36” below the finished grade.

7.5.

The grounding system shall utilize a UFER ground as required by Section

7.6.

All ground conductors located above ground shall be placed in Carlon Carflex Liquidtight Flexible Nonm etallic Conduit and shall be sealed w ith silicone caulk to prevent w ater entry.

7.7.

All bonds and connections in the grounding system shall be m ade using one of the follow ing:

7.7.1.

Exotherm ic W elds: Exotherm ic w elds shall be Erico CADW

ELD or approved equal.

7.7.2.

Irreversible Com pression Connectors (ICC): ICC’s shall be gas tight. ICC’s to be buried shall be designed and listed for direct burial. Connections to m etal equipm ent and structures shall be m ade w ith 2-hole connectors. Burndy or approved equal.

7.8.

The Design/Build entity shall rem ove all paint, oxidation or any other non-conductive coating before m aking a connection from the grounding system to a m etallic surface. Any rem oved paint shall be repaired to prevent future corrosion of painted surface.

7.9.

Grounding Electrodes shall be: Lyncole XIT Grounding conductors (Chem rods) or approved equal; 10’ L- Shaped configuration w ith 2/0 pig tail connection; Installed per m anufacturer’s requirem ents including Lynconite II backfill.

7.10.

All m etallic equipm ent located w ithin six (6) feet of the grounding ring or located inside the grounding ring shall be bonded to the ground ring using 2/0 bare stranded copper w ire. This shall include at a m inim um

, all tow er legs, concrete encased electrodes in all foundations, equipm ent shelters, standby generator sets, m ufflers, air intakes, louvers, m etallic portion of the building exterior, electric pow er service entrances, fences, gates, HVAC units and LPG tanks.

7.11.

Ground connections m ade to the tow er structural steel shall be m ade on a plate, w elded to the structure by the fabricator at the factory, w hich does not dim inish the structural integrity of the tow er.

Connections m ade directly to the structure, w ithout prior w ritten approval from the State, w ill be cause for repair or replacem ent at the discretion of the State.

7.12.

Ground bars, at a m inim um

, shall be sized to accom m odate all equipm ent listed in Table 3 plus 25% additional capacity. Bars shall be constructed from solid copper and at a m inim um m easure 1/4” thick by 4” tall by 12” w ide. Ground bars shall be tin plated. Ground bars to be isolated from m ount location w ith connectors/brackets as approved by the m anufacturer. Ground bars shall be attached to the ground ring w ith 4/0 stranded copper conductors or copper strap as show n on the draw ing.

7.13.

The new ly constructed grounding system shall be bonded to all existing site ground system s to form a single grounding system iscretion oof th f th f th f th f thtthtttttttthttttttthhhhhee e e St eeeeeeee ate and

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7.14.

The Design/Build Entity shall test the resistance of the ground system using the Fall of Potential Test per M otorola R56, and report the results to the State. The Design/Build Entity shall not backfill excavations for the grounding system until the State approves the results of the grounding system test.

The Design/Build entity shall notify the State seven (7) days before testing to allow the State to w itness the test if they choose.

7.15.

Inside cable entry grounding shall be provided utilizing an arrestor trapeze, tw o (2) SitePro O ne

ATK306U or approved equal.

8.0.

TRAN

SM

ISSIO

N

EQ

UIPM

ENT

8.1.

The Design/Build Entity shall design, supply and install all necessary equipm ent for a fully functioning transm ission system . The Design/Build Entity shall provide and install all hangers, connectors, w aveguides and grounding kits for antennae. All equipm ent shall term inate inside the com m unication shelter. Support for the transm ission cables shall be provided inside the shelter to the equipm ent. The Design/Build Entity shall supply all equipm ent necessary to transport and install the system per all applicable law s, codes and standards.

8.2.

New and relocated antennae shall be installed w ith new grounding kits consistent w ith the follow ing m odels or alternates approved by the State:

8.2.1.

1/2” Coax – RFS m odel GKFO

RM

60-12 8.2.2.

7/8” Coax – RFS m odel GKFO

RM

60-78

8.2.3.

1.3 x 0.8” W aveguide – RFS m odel GKIT-24-105

8.2.4.

2.0 x 1.2” W aveguide – RFS m odel GKIT-24-065

8.3.

Feedlines shall be consistent w ith the follow ing m odels or alternates approved by the State:

8.3.1.

1/2” Coax - RFS m odel LCF12-50J 8.3.2.

7/8” Coax – RFS m odel LCF78-50JA

8.3.3.

1.3 x 0.8” W aveguide – RFS m odel E105

8.3.4.

2.0 x 1.2” W aveguide - RFS m odel E65

8.4.

Feedline connectors shall be consistent w ith the follow ing m odel or alternates approved by the State:

8.4.1.

1/2” Coax - N-M ale connectors RFS m odel NM

-LCF12-D01 and N-fem ale connectors RFS m odel

NF-LCF12-D01

8.4.2.

7/8” Coax – N-M ale connectors, RFS m odel NM

-LCF78-D01 and N-fem ale connectors RFS m odel NF-LCF78-D01

8.4.3.

1.3 x 0.8” W aveguide – RFS m odel RFS C90-105FG (2 per line)

8.4.4.

2.0 x 1.2” W aveguide - RFS m odel C137-065FG (2 per line)

8.4.5.

7/8” Coax – DIN M ale – RFS m odel 716M

-LCF78-D01 and DIN Fem ale – RFS m odel 716F-LCF78- D01

8.5.

The Design/Build Entity shall use the 1/2” coax and connectors above for the jum pers for the 7/8” coax.

8.6.

All transm ission system com ponents shall be installed per the referenced standards and per the m anufacturer’s instructions.

8.7.

All feedlines shall be installed such that they form drip-loops betw een the tow er and the cable bridge.

8.8.

Feedlines shall be secured w ith m anufacturer approved clam ping devices to the tow er or to the w aveguide ladder no further than every three (3) feet unless Approved in w riting by the State.

8.9.

At a m inim um

, all feedlines shall be grounded for the top three (3) feet, at the bottom of the tow er, at the shelter entrance and at least every seventy-five (75) feet in a m anner approved by the m anufacturer. Grounding kits shall not be placed in the bend of the w aveguide.

8.10.

The Design/Build Entity shall w eatherproof all connectors and ground kits.

8.11.

The

Design/Build Entity shall specify and supply hoisting grips, hanger kits, hardw are and w eatherproofing for all transm ission lines.

8.12.

Feedline connectors shall be purchased pre-tuned by the m anufacturer.

8.13.

The Design/Build Entity shall perform the follow ing transm ission system tests:

8.13.1.

The Design/Build Entity shall perform the antenna system tests and perform antenna alignm ents for the antennae installed by the Design/Build Entity.

8.13.2.

All dish antenna w aveguides shall be tested for overall leakage to ensure the integrity of the com plete antenna system including the antenna, w aveguide and connectors. The tests shall be m ade per the m anufacturer’s specifications and shall be m ade from the pressure w indow

All test results shall be recorded.

8.13.3.

All w aveguides and coax shall be tested electrically: (1) w hile the w aveguide is on the reel and (2)after the w aveguide is hoisted and secured.

8.13.4.

All w aveguides and coax shall be tested for loss, return loss and cross-polarization discrim ination (as appropriate) from the radio bay to the antenna. The specific objective values shall be recorded for each test.

8.14.

M icrow ave azim uths given in Table 3 are approxim ate and intended for the design of the tow er structure only. The Design/Build entity is responsible for verifying the azim uths in Table 3 are accurate before aligning m icrow ave dishes.

9.0.

SHELTER M

O

DIFICATIO

N S

9.1.

The Design/Build Entity shall provide and install a new w aveguide entry panel into the existing equipm ent shelter. Unused ports shall be covered w ith a sealing cap w ith clam p and unused openings shall be plugged.

9.2.

Abandoned ports shall be covered w ith a sealing cap and clam p and unused openings shall be plugged.

10.0.

SUBM

ITTAL R

EQ

UIREM

ENTS

The Design/Build Entity shall subm it to the State all required docum entation in electronic (PDF) form at and on paper w ith three (3) copies. All com puter-generated draw ings shall be furnished to the State in an electronic form at of the softw are in w hich the draw ings w ere created. The State reserves the right to utilize a m axim um of five (5) business days for the review of each subm ittal. The Design/Build Entity shall subm it the follow ing docum ents for approval by the State prior to beginning procurem ent, fabrication, installation or construction:

10.1.

Copies of all perm its obtained by the Design/Build Entity. Design/Build Entity and the State shall coordinate perm it process as to avoid duplication.

10.2.

The Design/Build Entity is responsible for subm itting a Construction Plan a m inim um of thirty (30) days prior to m obilizing. The Construction Plan shall include the construction schedule. The schedule shall include the follow ing activities at a m inim um : m obilization, earthw ork, concrete placem ent, grounding system installation, tow er erection, seeding and dem obilization.

10.3.

The tow er docum entation shall include:

10.3.1.

An electronic copy of the tow er design m odel in GUYM

AST form at (current edition);

10.3.2.

A draw ing, signed and sealed by a professional engineer, detailing tow er geom etry and assum ed equipm ent locations including fabrication details;

10.3.3.

All environm ental conditions utilized for the design;

10.3.4.

All m em ber sizes, m aterials and finishes;

10.3.5.

All connection designs including the num ber and type of fasteners assum ed and connection plate thicknesses and m aterials;

10.3.6.

M em ber capacities/stress ratios for all sections and m em ber types for w orst case loading;

10.3.7.

Tow er deflection and tw ist data under m axim um load and under service loads;

g

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10.3.8.

Tow er reactions for w orst cast loading broken dow n into concurrent shear and vertical loading for the m axim um shear and vertical loading conditions;

10.3.9.

M aterial take-offs and total tow er w eight;

10.3.10.W aveguide ladder, clim bing ladder, safety clim b;

10.3.11.M anufacturer’s recom m endations of all equipm ent to be m ounted on the tow er; and 10.3.12.M ill certificates for all structural elem ents including:

10.3.12.1.Legs;

10.3.12.2.Bracing;

10.3.12.3.Flanges and Tab Plates;

10.3.12.4.Bolt Assem blies;

10.3.12.5.Anchor Bolts;

10.3.12.6.Step Bolts;

10.3.12.7.M ounts; and 10.3.12.8.Clim bing and W aveguide Ladders.

10.4.

The foundation docum entation shall include:

10.4.1.

Draw ing, signed and sealed by a Registered Professional Engineer in the State of Colorado, of foundation show ing geom etry and reinforcing;

10.4.2.

Foundation calculations signed and sealed by a Registered Professional Engineer in the State of Colorado.

10.4.3.

Assum ed loading for the foundations utilized for the design;

10.4.4.

Assum ed concrete and reinforcing strengths;

10.4.5.

Details of m ix design including design strength, any adm ixtures, slum p range, air entrainm ent range and m axim um w ater content; and 10.4.6.

M ill certificates for all structural elem ents including:

10.4.6.1.

Anchor Bolts;

10.4.6.2.

All-Thread-Bar;

10.4.6.3.

Associated All-Thread-Bar Com ponents; and 10.4.6.4.

Concrete Reinforcing Bar.

10.4.6.5.

Concrete cylinder break reports.

10.5.

The grounding system docum entation shall include:

10.5.1.

The m anufacturer’s product literature and installation recom m endations for all proposed bonding and connections shall be subm itted to the State for approval prior to installation; and 10.5.2.

Field testing of grounding system perform ed by the Design/Build Entity.

10.6.

The cable bridge docum entation shall include:

10.6.1.

A construction draw ing shall be provided to the State prior to procurem ent. The draw ing shall include foundation details, all com ponent m aterials and m em ber sizes and finishes.

10.7.

Q ualifications of the independent inspection individuals and firm per the follow ing requirem ents:

10.7.1.

Resum e and/or qualifications of on-site independent inspector(s), inspection firm

(s) and testing firm

(s) prior to the start of construction.

10.8.

Transm ission system docum entation shall include:

10.8.1.

M anufacturer literature for all equipm ent installed.

10.8.2.

M anufacturer instructions for all equipm ent.

10.8.3.

W ritten test results, including sw eep line data, for all system tests shall be subm itted to the

State w ithin seven (7) days of the com pleted test.

10.9.

The Design/Build Entity shall provide as-built draw ings in electronically red-lined PDF form at.

10.10.

At the conclusion of the project, the Design/Build Entity shall provide all project docum entation including all subm ittal docum entation as required by Section 10 of this specification to the State in hard copy and electronic form at as follow s:

10.10.1.Hard Copies:

The Design/Build

Entity shall provide three

(3) copies of the project docum entation in bound form at.

10.10.2.Electronic: The Design/Build Entity shall provide three (3) copies of the project docum entation on three (3) individual thum b drives large enough to hold all the project files.

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