Q A_dated_13_May_16.pdf

QUESTIONS AND ANSWERS

FA5209-16-R-0011

Query

No Target for Question

Reference Question by Offerors Gov’t Response/Clarification

1 SOW II.B,

1,2,3,12,13 & 14

For replacement of existing circuit, please provide circuit diagram(s) if available. TEDL, PAPI, RCLL, RTZL, RGL, RDML, WIND CONE, SFL.

既設回路撤去・切換の計画にあたり、回路図を提供し

ていただけるか？TEDL, PAPI, ROLL, RTZL, RGL,

RDMK, WIND CONE, SFL.

The Government will provide the as-built drawings via Safe Access File Exchange (SAFE) site to the prospective offerors. Please contact Ms. Namiko Kaneko (namiko.kaneko.1.jp@us.af.mil) to obtain the copy.

2 SOW II.B.1

E201, 221

Please provide a light coordinate list. TEDL will be installed based on the list. Also please instruct if measurement of taxiway and reconsideration of lamp layout is necessary.

TEDLの設置は灯火座標リストを頂い、その座標店に灯

器を設置するものと考えています。誘導路形状の測

量・灯器配置の再設計が必要であればご指示をお願い

します。

The design is based on existing "as-built" drawings with some corrections per field survey. The Government does not have a light coordinate list. Locations of the NAVAIDS are determined by the dimensions shown on the Site Electrical Plans (E-201 through E-221) and installation details (E-501 through E-506). Taxiway edge light spacing is shown on the Site Electrical Plans. Taxiway Light Position Detail/E-506 shows the relative position of the new taxiway edge lights in relation to the taxiway edge striping and the existing taxiway edge lights. The contractor is required to conduct the appropriate survey and measurement before installation. In addition, Sheet E- 002, General Scope of Work - Airfield Lighting, item #16 requires the Contractor to provide Geo-Base "As-Built" drawings: "UPON

COMPLETION OF THE PROJECT, PROVIDE GEO-BASE AS-

BUILT DRAWINGS SHOWING ALL ACTIVE NAVAID

FIXTURES/EQUIPMENT INCLUDING (BUT NOT LIMITED TO)

APPROACH LIGHTS, PAPI, RUNWAY LIGHTS, THRESHOLD

LIGHTS, TAXIWAY LIGHTS, GUARD LIGHTS, SIGNS, WIND

CONES, MANHOLES, HANDHOLES AND JUNCTION CAN

PLAZAS." Therefore, the contractor shall provide the as-built drawings with a light coordinate list. (Reference Questions #24, 34)

3 SOW II.B.1

E201, 221, Underground piping in greenery area is indicated in the plan view; however not in the detailed view. Please provide detail plan of greenery area.

平面図には緑地部の埋設配管の記載があるが、詳細図

には緑地部の記載がない。緑地部の詳細をご指示くだ

さい。

See Amendment 0003, Sheet E-505, detail 4/E-505, TYPICAL

DUCTLINE SECTION – GRASSED AREA.

4 SOW II.B.1

E201, 221, For replacement of TEDL, is there any specified procedure required? E.g 1: [Shutdown] [Remove] [Install new] [Restore] in sequence, one taxiway at the time.

E.g 2: Temporary relocate the light, provide exposed primary and secondary cable temporarily. Install new TEDL. Remove

There are no special procedures, but your suggested examples are not acceptable. All existing lights shall remain operational during construction. Install new ductlines, cables, bases and lights for new circuits. Test new light installation. Remove existing lights and cables.

existing light and temporary cables.

Or is there any other procedure required?

TEDL切換にあたり現状どのような停止手順を計画して

いるか？ ケース１：使用しない誘導路を決め、順次停止・撤

去・新設・復旧を繰り返す。 ケース２：灯器を仮設基台を用い仮置きし、一次側、

二次側ケーブルを露出で仮設し、掘削・埋設配管・灯

器設置などを行い仮設した既設機器・ケーブルを撤去

する。

(Reference Questions: #33)

5 SOW II.B.1

E201, 221, For excavation at taxiway shoulder and greenery area, backfilling by the end of work hours could be difficult. Is it acceptable to separate the excavated area with A-type (single pipe) barricade? Temporary fence has a risk of scattering.

誘導路ショルダー・緑地部の開口部養生は必要でしょ

うか。誘導路ショルダーの掘削は即日復旧はできず、

仮設フェンスはブラスト等で飛散する可能性があるた

め、単管バリケードの養生を考えているがよろしいで

しょうか？

Provide self-illuminated construction barricade in accordance with UFC 3-260-01, Chapter 14 and FAA AC 150/5370-2F. Or a temporary barricade of the H steel or railroad tie with amber flasher lights is necessary. A-type barricade is not acceptable. (Reference Questions: #7, 39)

6 SOW II.B.1

E501

New light (TEDL etc) seems non-heat type based on the size of rubber trance. Is it correct?

新設の灯器（TEDL等）はヒータ無のタイプでよろしい

でしょうか。ゴムトランスのサイズからはヒーターな

しと読取れます。

Yes, it is correct. Arctic heater NOT required.

7 SOW II.B.1,

12 & E101, E124

Please specify any requirements regarding excavated opening by the end of the work hours. (e.g Must be backfilled within certain distance from R/W, T/W etc.)

日々の作業終了時、掘削開口部の状態に制約はありま

すか。(R/W,T/Wから○○m以内は必ず埋戻し,30㎝以内の

起伏はOK等。）

Provide self-illuminated construction barricade in accordance with UFC 3-260-01, Chapter 14 and FAA AC 150/5370-2F. Or a temporary barricade of the H steel or railroad tie with amber flasher lights is necessary. A-type barricade is not acceptable. (Reference Questions: #5, 39)

8 SOW II.B.1,

6 & E602

Modification of console seems to be required in accordance with consolidation of TEDL circuit. Please provide detail requirement other than name plate replacement.

TEDLの回路集約に伴い、コンソールの改修が必要で

す。銘板交換の指示ありますが、その他の仕様が不明

確です。ご教示ください。

Indicator lights and switches need to be rewired/ Reprogrammed by the manufacturer to match new circuiting.

9 SOW II.B.2

& E201, E221

Existing rubber trans will be 2A-2B plug recep because of 3kV circuit. 5kW cable outer diameter does not match. Please advise that rubber trance can be diverted.

既設ゴムトランスは3kVの回路なので、2A-2Bのプラグ

Provide new FAA L-823 5KV connector between existing PAPI, RCLL and RTZL 6.6A transformers and new FAA L-824 5KV cable.

See Amendment 0003, Sheet E-002, GENERAL SCOPE OF WORK

– AIRFIELD LIGHTING, Item #7.

レセップとなります。5kVのケーブルでは外径が合いま

せん。ゴムトランスは流用で間違いないかご指示くだ

さい。

10 SOW II.B.2

& E602 As Question No.9 above, modification of SAFETY-CUT OUT SW will be needed in order to change to 5kV cable. Is it acceptable?

「9」項と同じく、5kVのケーブルに変更するため

SAFETY-CUT OUT SWの改修が必要と思われます。ご

指示お願いします。

Existing Safety Cut-Out Switches do not need to be modified, however the existing 3KV cables will need to be removed and new 5KV cables installed. See Amendment 0003, Sheet E-002, GENERAL SCOPE OF WORK – AIRFIELD LIGHTING, Item #8, Sheet E-601 and Sheet E-602.

11 SOW II.B.2

& E201, E221

If RCLL, RTZL etc can be shutdown, the procedure of remove all cables and replace with new acceptable? If not, replacement work for some span at the time is considered.

対象回路の不点灯期間は認められないものと考え、既

設回路と新設回路を数スパンずつ切換えていく工法を

考えています。

仮にRCLL・RTZL等を停止できるのであれば既設ケー

ブルをすべて撤去し、その後新設ケーブルに引換えを

行います。

RCLL, RTZL etc shall not be shutdown. Extended shut-down will not be allowed.

12 SOW II.B.3 Please provide circuit configuration of the existing RGL.

既設の RGL の回路構成をおしえてください。

Existing RGLs are connected to associated taxiway edge light circuit.

The Government will provide the as-built drawings via Safe Access File Exchange (SAFE) site to the prospective offerors. Please contact Ms. Namiko Kaneko (namiko.kaneko.1.jp@us.af.mil) to obtain the copy.

13 SOW II.B.3

& E502

Is RGL FAA L-804 correct? Drawing shows L-861T.

RGLの仕様はFAA L-804で良いでしょうか。図面にはL-

861Tと記載があります。

FAA L-804(L) is correct. See Amendment 0003, Sheet E-502, Detail

2/E-502, RUNWAY GUARD LIGHT DETAIL.

14 SOW II.B.4

& E601, E602

Details of equipment modification is unknown because elevation connection plan of existing equipment is not available. Please provide.

既設機器の展開接続図がないため、機器改造の詳細が

不明確です。 既設機器－展開接続図の提供をお願いします。

Provide mechanical interlock per Sheet E-602.

Please refer to the attached pictures.

15 SOW II.B.4

& E601, E602

Power outage will be required for the modification of existing equipment. Backup of lower load will not be provided. Is it acceptable?

既設機器の改造作業時は、対象機器および・下位の負

荷は停電が必要です。下位の負荷のバックアップは現

在、計画しておりませんがよろしいでしょうか？

Schedule power outages with Yokota AB. Backup power is not required.

16 SOW II.B.6 Providing name plate and paint for only new installation/modification? How about the existing? Also, New nameplates required for new and modified equipment only. See Specifications Section 26 20 00, paragraph 2.2.

please specify the specification of name plate.

機器、ハンドホール等への銘板取付・ペイント等は新

設・改修部のみの対応でしょうか。それとも、既設も

含めてすべてとなりますか。 17 SOW II.B.6 Name plate for circuit cables will not be provided for the out of work scope of this project. Is it acceptable?

今回工事対象範囲外の回路のケーブル銘板取付は不含

と考えていま

す。REDL , PALS 等。

Acceptable.

18 SOW II.B.7 Insulation resistance test and CCR adjustment will not be provided for the out of work scope of this project. Is it acceptable?

今回工事対象範囲外の回路の絶縁抵抗測定は不含と考

えていますが

よろしいでしょうか？REDL , PALS 等。

Acceptable.

19 SOW II.B.7 Insulation resistance test will be conducted and submitted when each circuit is completed. Is it acceptable?

絶縁抵抗測定結果の提出は、各回路完成時の測定値を

提出するものと考えていますがよろしいでしょうか？

Testing of each circuit can be done as they are completed but the Government will not perform inspection/acceptance by phase. Only one time final acceptance will be conducted at the end of the project.

20 SOW II.B.8 Detail of disconnection points, cable length and other information is not clear. Please provide information if it is available.

切り離し箇所、ケーブル長さ等の詳細が不明確です。 資料がありましたら提供をお願いします。

Information not available.

21 SOW II.B.9

& E201, E221, E507

Cable extension seems difficult with Junction Plaza Method indicated on the drawings. Also, connecting piping from under taxiways/overrun will make a big detour. Is it acceptable to use handhole/manhole instead?

設計図に記載されているジャンクションプラザの工法

ではケーブルの延線が困難です。また、誘導路下・オ

ーバーラン下の配管からの接続では曲りが大きくなっ

てしまいます。ハンドホール・マンホールへの代替は

可能でしょうか。

Junction Can Plaza is an Air Force Standard – please follow the details in Drawing E-507.

22 SOW II.B.9

& E207

Only on this drawing (E207) shows that the installation of handhole. Is Junction Plaza correct?

本図面のみハンドホールを設置することとなっていま

すが、ジャンクションプラザの誤りでしょうか。ご確

認お願いします。

Junction Can Plaza shall be provided. See Amendment 0003, Sheet

E-207, PARTIAL SITE ELECTRICAL PLAN - 1.

23 SOW II.B.10 Location of ground wire and other details are unknown.

Please provide information if available.

All ground wires for airfield lighting circuits shall be terminated on ground buses in existing handholes 18 and 19, located just outside of

アース線等の詳細が不明確です。 資料がありましたら提供をお願いします。 the existing Building #1370 (see E-401 for handhole location). DO NOT bond counterpoise ground conductor to airfield lighting circuit ground conductors/ground buses.

24 SOW II.B.11

& E201, E221

Please provide a light coordinate list. TEL will be installed based on the list. Also please instruct if measurement of taxiway and reconsideration of lamp layout is necessary.

TELの設置は、灯火の座標リストを提供いただき、その

座標点に灯器を設置するものと考えています。誘導路

形状の測量・灯器配置の再設計が必要であれば、その

旨、指示をお願いします。

The design is based on existing "as-built" drawings with some corrections per field survey. The Government does not have a light coordinate list. Locations of the NAVAIDS are determined by the dimensions shown on the Site Electrical Plans (E-201 through E-221) and installation details (E-501 through E-506). Taxiway edge light spacing is shown on the Site Electrical Plans. Taxiway Light Position Detail/E-506 shows the relative position of the new taxiway edge lights in relation to the taxiway edge striping and the existing taxiway edge lights. The contractor is required to conduct the appropriate survey and measurement before installation. In addition, Sheet E- 002, General Scope of Work - Airfield Lighting, item #16 requires the Contractor to provide Geo-Base "As-Built" drawings: "UPON

COMPLETION OF THE PROJECT, PROVIDE GEO-BASE AS-

BUILT DRAWINGS SHOWING ALL ACTIVE NAVAID

FIXTURES/EQUIPMENT INCLUDING (BUT NOT LIMITED TO)

APPROACH LIGHTS, PAPI, RUNWAY LIGHTS, THRESHOLD

LIGHTS, TAXIWAY LIGHTS, GUARD LIGHTS, SIGNS, WIND

CONES, MANHOLES, HANDHOLES AND JUNCTION CAN

PLAZAS." Therefore, the contractor shall provide the as-built drawings with a light coordinate list. (Reference Questions #2, 34)

25 SOW II.B.12

& E201, E207

Please provide a light coordinate list. RDML will be installed based on the list.

RDMLの設置は、灯火の座標リストを提供いただき、そ

の座標点に灯器を設置するものと考えています。

Please refer to the response above (#24)

26 SOW II.B.12

& E201, E207

Location of existing and new RDML could be interfered each other. In this case, possible power outage for several months may be anticipated. Please specify any requirements in case of long period of power outage.

新旧のRDML併設は位置が干渉すると予想されます。

その場合、数か月の期間で停止が必要となります。

New RDML shall not block visibility to existing RDML during construction. Installation of RDML concrete base can be completed without interfering with existing RDML visibility. IAW UFC 3-535- 01, para 9-6.2.1, the distance from the runway edge to the RDML shall be between 15 – 22.5 meters, therefore, there is sufficient space between the existing RDML and the runway edge to install the new

RDML.

27 SOW II.B.12

& E201, E207

Please provide detail information of existing RDML cable due to required removal work.

既設RDMLのケーブル撤去にあたり、線種が不明です。

既設資料の提供をお願いします。

Existing RDML cable is 1C 8sq L-824 5KV type C cable

28 SOW II.B.12

& E504

Precast concrete for the foundation is indicated on the drawing. However, delivering it to the site is difficult due to its heavy weight. Is it acceptable to cast concrete at the field site?

Yes. Note detail is for cast-in-place installation and NOT precast.

(Reference Questions: #29, 35, 36)

基礎工事は現場打ちでも良いでしょうか。（図面には

プレキャスト製と記載がありますが、重量が嵩み運搬

が困難なため。）

29 SOW II.B.12

& E504 Is it possible to change the foundation configuration? If yes, what is the condition for strength calculation?

基礎の形状変更は可能でしょうか。 その場合、強度計算の条件をご指示ください。

Note detail is for cast-in-place installation and NOT precast. The shape of the foundation can be rectangular, but the contractor shall maintain the same or larger depth/width/length.

(Reference Questions: #28, 35, 36)

30 SOW II.B.13

& E113, E118

There is no information about removal of WIND CONE existing cable. Please provide information if available.

WIND CONEの既設ケーブルの撤去については、詳細が

記載されていません。資料があれば提供をお願いしま

す。

See Sheets E-113 and E-118. Remove existing cable between existing wind cone and existing transformer of the panelboard.

31 SOW II.B.14 Regarding SFL modification, only removal work is indicated on the drawing. Please specify if any procedure required after removal work. Removal work in only overrun necessary?

SFL改修について、図面では撤去工事の内容しか確認で

きません。撤去後のステップがあれば提供をお願いし

ます。又は、オーバーラン内を撤去するのみで良いで

しょうか。

See Sheet E-002, GENERAL SCOPE OF WORK

- AIRFIELD LIGHTING, note #4.

32 SOW II.B.14

& E101, 102, 108, 109

Possible damages on near LAS piping/wiring is considered when removal of SFL piping. Is it possible to leave existing SFL piping?

SFL用の配管を撤去すると、直近にあるALS用の配管・

ケーブルの損傷が予想されます。SFL用配管の残置は可

能でしょうか。

See Sheet E-101/E-102 and E-108 – Remove cables only. Existing ductline shall be abandoned.

33 SOW II.B.15,

16 & E101, 124

For replacement of TXGS, is there any specified procedure required?

E.g 1: Shutdown all lights at once. Remove existing and install new. Restore.

E.g 2: Shutdown, remove existing and install new, restore in sequence by area/usage.

E.g 3: Shutdown, remove existing and install new, restore in sequence by each span to minimize shutdown area.

TXGSの切換えに当たっては、現状どのような手順を計

画しています か。 ケース1：一度にすべての灯火を停止。撤去、新設を待

って復旧。 ケース2：エリア/用途などに分けて順次停止、撤去、新

設、復旧を繰り返す。

There are no special procedures, but your suggested examples are not acceptable. All existing lights shall remain operational during construction. Install new ductlines, cables, bases and lights for new circuits. Test new light installation. Remove existing lights and cables.

(Reference Questions: #4)

ケース3：運用停止範囲を最小限とするため、1スパン

毎に停止・撤去・新設・復旧を繰り返し行う。

34 SOW II.B.15,

16 & E101, 124

Please provide a light coordinate list. TXGS will be installed based on the list. Also please provide information for installation degrees if available.

TXGSの設置は、灯火の座標リストを提供いただき、そ

の座標点に灯 器を設置するものと考えています。また、設置角度に

ついても設計資料を提供お願いします。

See details on Sheets E-508 through E-515. All signs (Runway Distance Marker, Arresting Gear Marker, Runway Hold, Taxiway directional, Taxiway Informational) are installed 90-degrees to the Runway/Taxiway centerline EXCEPT TACAN signs, which are installed 45-degrees to the Tacan Hold position. Please also refer to Q&A for #2, 34.

35 SOW II.B.15,

16 & E503

Precast concrete for the foundation is indicated on the drawing. However, delivering it to the site is difficult due to its heavy weight.

Is it acceptable to cast concrete at the field site?

基礎工事は現場打ちでも良いでしょうか。（図面には

プレキャスト製と記載がありますが、重量が嵩み運搬

が困難なため。）

Yes. Note detail is for cast-in-place installation and NOT precast.

(Reference Questions: #28, 29, 36)

36 SOW II.B.15,

16 & E503

Is it possible to change the foundation configuration? If yes, what is the condition for strength calculation?

基礎の形状変更は可能でしょうか。 その場合、強度計算の条件をご指示ください。

Note detail is for cast-in-place installation and NOT precast. The shape of the foundation can be rectangular, but the contractor shall maintain the same or larger depth/width/length.

(Reference Questions: #28, 29, 35)

37 E401 Notes-6 states that [RDMS and RGL shall be lit while REDL is lit]. Due to current logical condition (DAY/1000-/7+), [REDL=Lit, RDML=Unlit] is assumed. In this case, modification of program will be required. Please advice.

NOTES-6に「REDL点灯時はRDMLとRGLは点灯する」

とありますが、現在の論理条件（DAY/1000-/7+）では

REDLは点灯・RDMLは消灯です。プログラムの改修が

必要となります。ご指示お願いいたします。

Please refer to the revised Statement of Work. The Runway Guard Lights are all connected to a single/dedicated Constant Current Regulator (CCR #14). It should be relatively simple for Toshiba to program the system to turn on CCR #14 anytime either of the two Runway Edge Lights (REDL-A or REDL-B) is turned on. Similarly, the Runway Distance Marker Lights (RDML) are all connected to a single/dedicated CCR (RDML).

REDL(A) = ON, then RDML = ON, RGL = ON.

REDL(B) = ON, then RDML = ON, RGL = ON.

(Reference Questions: #38, 47, 49, 50)

38 E401 Notes-6 states that [RDMS and RGL shall be lit while REDL is lit]. The design seems to integrate RGL with TEDL circuit.

Logical condition for REDL and TEDL is different that the simultaneous light may be unable. Please advice.

NOTES-6に「REDL点灯時はRDMLとRGLは点灯する」

とありますが、RGLはTEDL回路に組込む設計となって

います。REDLとTEDLは論理条件が異なるので同時点

灯できない条件が発生します。ご指示お願いします。

Only RGL connected to circuit TEDL #14. Please refer to the revised Statement of Work.

(Reference Questions: #37, 47, 49, 50)

39 SOW II.B.18 Work area and excavated area will be surrounded with A-type Provide self-illuminated construction barricade in accordance with barricade (single pipe). Is it acceptable?

仮設フェンスについて、図面には記載ありませんが、

工事エリア・掘削開口部の養生と考えています。よろ

しいでしょうか？

UFC 3-260-01, Chapter 14 and FAA AC 150/5370-2F. Or a temporary barricade of the H steel or railroad tie with amber flasher lights is necessary. A-type barricade is not acceptable. (Reference Questions: #5, 7)

40 SOW II.B.1

& E201, E221

Please specify the existing piping size and quantities. Also, specify MH size please.

既設の配管条数、MH サイズ等をご提示ください。

Most ductline sizes are 50mm, some 100mm. Manhole sizes vary.

Refer to the attached as-built drawings.

41 E501, E504 Please specify the spec of Tr stand.

Tr スタンドの仕様をご提示ください。

Transformer Stand = brick or concrete block.

42 General FEP will be used instead of noncombustible FEP. Is it acceptable?

難燃性 FEP は使用せず、一般用 FEP を使用するものと

します。

Acceptable.

43 SOW II.B.1

& E101, E124

Please specify the number of lights which will be disposed and reused.

廃棄灯器と再利用の灯器(指定場所に収集)の数量をご提

示ください。

Information is not available. Yokota AB is constantly replacing old and damaged lights.

44 SOW II.B.1

& E201, E221

There is no indication of PAPI, RCLL(A), (B) cable (cable

no. 5,6,12) of E210 - B1310. Please verify.

PAPI、RCLL(A)、(B)ケーブル(配線番号⑤、⑥、⑫)の

E-210上部～＃1310の記載がありません。配線および配

管の有無をご指示ください。

See Sheet E-002, NEW WORK NOTES.

45 SOW II.B.4 CCR adjustment will be conducted after switching the load, and CCR tap adjustment will be only one time during the construction. Is it acceptable?

CCR調整は最終的に負荷が切変わった後に実施するも

のとします。CCRのタップ調整は工事期間中にこの1度

だけと考えていますが、よろしいでしょうか？

Acceptable.

46 Operation of existing equipment will be exclude from the estimation. Is it acceptable?

既設機器の操作は全て別途としますがよろしいです

か？

Acceptable. All existing equipment is working.

Query No.

Target for Question Reference Question by Offerors Gov’t Response/Clarification

47 RGL SOW Ⅱ.B,3 As described on SOW “Reconnect existing Runway Guard Lights circuits to new runway sign circuits”, however it connects to TEDL circuit on the diagram. Should we

New Runway Guard Lights shall be connected to existing circuit TEDL #14. See Sheets E-002 and E-602. Please refer to the revised Statement of Work.

recognize as Runway sign circuit = TEDL Circuit? (Reference Questions: #37, 38, 47, 49, 50) 48 Replace cables between Safety Cutout Switch and

CCR

E-601 & E-

It seems that the cables between Safety Cutout Switch and CCR do not need to be exchanged on the diagram; however there are circuits are currently used 3kVA cables between them. Should we consider to exchange new at this part as well?

If so, cable connectors (Plug Receptacle) need to be exchanged. Is this plug FAA L823? We believe that Japanese products are currently used.

Replace existing 3KV cables with new FAA L-824 5KV cables between the existing CCRs and Safety Cut-Out Switches. See Amendment 0003, Sheet E-002, GENERAL SCOPE OF WORK – AIRFIELD LIGHTING, Item #8, Sheet E-601 and E-602.

49 RGL

E-602 NOTEs 5

Though stated as “Interlock RGL regulator shall turn on whenever REDL(A) or REDL(B) regulator are tuned on”, RGL is connected to the same circuits on TEDL or Airfield Sign. We believe that when REDL is turned on, all RGL, Taxiway Edge Lights and Airfield Sign are also turned on. Is this how we set the control panel?

All new Runway Guard Lights shall be circuited to existing TEDL #14. Only Runway Guard Lights shall be connected to TEDL #14.

Please refer to the revised Statement of Work.

(Reference Questions: #37, 38, 47, 48)

INTERLO

CK RGL

WITH

REDL

E-602 NOTEs 5

In relation to the above mentioned question, the automatic control is currently set as when REDL is turned on, TEDL is turned off. Should we consider this program needs to be modified as well?

If REDL(A) is turned on, TEDL #14 shall automatically be turned on.

If REDL(B) is turned on, TEDL #14 shall automatically be turned on.

TEDL #14 can be turned on manually for inspection/repair/testing if REDL(A) and REDL(B) is off.

Please refer to the revised Statement of Work.

(Reference Questions: #37, 38, 47, 48, 49, 50)

Query No.

Target for Question Reference Question by Offerors Gov’t Response/Clarification

51 Base Can E-501 & E-

The drawings specify L867B (12” non‐load bearing base cans) through out, however the detail drawings really look like L‐868B (12” load bearing bases). For USAF installations typically they now use L868B bases for both inpavement and elevated lights. I am concerned that the L‐867B is wrong.

Also on E‐507, that page shows the plaza cans and they call out both L867D left side and L867B right side, but then state a 15” cover for the 12” can….. In all cases, there are no reference to the thickness of the baseplates nor the blank solid covers on the plaza cans nor the sign cans.

In addition there are no cover plate gaskets specified.

FAA L-867B and L868B (12” and 16” diameter) base cans shall be provided as specified. FAA L-867B base cans are acceptable for non-load bearing installations, which covers the majority of the project.

See Amendment 0003, Sheets E-501, E-502, E-503, E-504, E-506, E- 507 and E-518.

Base cans for junction can plazas shall be FAA L-867B (16” diameter) with L-867B cover. Cover thickness shall be in accordance with FAA AC 150-5345-42H, paragraph 3.1.3.5.1 (minimum 0.375” thick) for FAA L-867B base cans. See Amendment 0003, Sheets E- 507.

Provide base can gaskets for all base cans. See Amendment 0003, Sheet E-001, Note #4.

52 Airfield Sign

E-503 & E-

Drawing E‐503 & E‐504 provide sign details. However, the sign manufacturer that is shown does not manufacturer FAA

The detail shows a typical installation and does not imply a particular sign manufacturer must be provided. Note #1 of the details specify certified Mode 3 (high wind) signs. In addition, there is no details provided for the sign base can installation.

high wind signs.

FAA L-867B base can shall be provided in location shown. See Amendment 0003, Sheet E-503, E-504 and E-506.

53 Base Can E-501 Drawing E‐501 Semi‐flush taxiway edge light detail shows the L‐852T installation.

However there is no flange ring or spacer ring that is part of a typical installation.

If base can is installed per detail, flange/spacer rings not required.

Should the top of the fixture end up below the top of concrete, an appropriately sized spacer ring will be required. See Amendment 0003, Sheet E-001, Note #4.

Taxiway Lights

E-501 The EMT for the L‐861T taxiway lights on E‐501 and the L‐ 804 Runway Guard lights on E‐502 is specified as 304 stainless steel. These are no FAA certified L‐861T or L‐804’s with 304 stainless steel EMT. To be FAA certified, manufacturers would have to design the product, including painting the EMT yellow (FAA requirement), redesign the frangibility requirements and pay to have these product FAA certified.

This would result in a considerable amount of time and expense. 304 stainless steel is not required for Yokota Air Base.

Provide EMT stem in accordance with Specification Section 26 56

20.00 10, paragraph 2.4.2.2.e.

See Amendment 0003, Sheets E-501 and E-502.

55 Base Can Cover Plate

E-501 & E-

The light bases that are specified are stainless steel. What is the requirement for the cover plates?

Provide 304 Stainless Steel base cover plates in accordance with Specification Section 26 56 20.00 10, paragraph 2.4.2.2.e.

See Amendment 0003, Sheet E-001, Note #3.

56 Base Can E-501 & E-

The light bases are specified as 2‐piece base cans. What is the height requirement for the top and bottom sections?

Typical top and bottom section base can heights are 4” and 20” respectively.

Query No.

Target for Question Reference Question by Offerors Gov’t Response/Clarification

57 E-501, E-502 L-861T Taxiway Edge Lights and L-804 Runway Guard lights that are specified on Drawings E-501 & E-502 with 304 Stainless Steel EMT conduit. There seems to be an error.

Standard EMT is correctly specified for the elevated NAVAIDS in Specification Section 26 56 20.00 10, paragraph 2.4.2.2.e.

IAW FAR 52.236-21, Specifications and Drawings for Construction, in case of difference between drawings and specifications, the specifications shall govern. See Amendment 0003, Sheets E-501 and E-502.

58 UFC UFC 3-535-

UFC 3-535-02, Design Drawings for Visual Air Navigation Facilities is no longer available in WBDG. Please clarify.

UFC 3-535-02 is discontinued.