Statement of Work.pdf

STATEMENT OF WORK

FOR

REPAIR HANGAR DOORS, HANGARS

1010, 1060 AND 1090

PROJECT VNVP 021170

February 2009

PREPARED BY

ENGINEER FLIGHT

82d CIVIL ENGINEER SQUADRON

231 NINTH AVENUE

SHEPPARD AFB TX 76311-3333

PROJECT MANAGER: JOHN T. GILMORE III

VNVP 021170

TABLE OF CONTENTS

Project VNVP 021170

Division SECTION Title 1 General Requirements

01000 Statement Of Work 2 Site Work (Not Used)

3 Concrete (Not Used)

4 Masonry (Not Used)

5 Metals: Structural And Miscellaneous (Not Used)

6 Carpentry (Not Used)

7 Moisture Protection (Not Used)

8 Doors, Windows, And Glass 08342 Repair Steel Sliding Hangar Doors

9 Finishing (Not Used)

10 Specialties (Not Used)

11 Equipment (Not Used)

12 Furnishings (Not Used)

13 Special Construction (Not Used)

14 Conveying Systems (Not Used)

15 Mechanical (Not Used)

16 Electrical (Not Used)

STATEMENT OF WORK

1. DESCRIPTION OF WORK:

1.1 Work to be done:

The work to be performed under this contract and in accordance with these contract documents shall consist of furnishing all necessary plant, labor and materials; and constructing, installing and performing all work shown and described in the contract documents, all of which are made a part thereof.

1.2 Character of Work and Mechanics:

The work shall be executed in the best and most workmanlike manner, with the least inconvenience to the government, by qualified, careful, and efficient mechanics skilled in the trade. The work shall be in strict accordance with the contract documents and standards of the industry. Only certified journeymen in respective trades, or apprentices under the direct supervision of certified journeymen, will be permitted to install, supervise installation of, or alter or repair electrical and mechanical systems. Electrical and mechanical systems include but are not limited to: pipe, plumbing, electrical wiring, fire protection systems, welding, equipment and devices. A current state or municipal, tested and issued plumbing/gas and electrical license, will be recognized as certification upon approval by the Contracting Officer. License shall be available for government inspection at the pre-work conference and from mechanics and electricians at the job site throughout contract operations.

1.3 Location:

Sheppard Air Force Base is located in Wichita County, approximately five miles north of Wichita Falls, Texas. The project is VNVP 021170, Repair Hangar Doors, Hangars 1010, 1060 & 1090.

2. PRINCIPAL FEATURES:

2.1 General:

All work shall be done with the building occupied and the work area occupied.

The contractor shall coordinate all work with the occupants, the Civil Engineering contract inspector, and the Contracting Officer. Work area is the northwest, northeast and southeast hangar bay doors on Hangar 1010, southwest, northwest and southeast hangar bay doors on Hangar 1060 and the southwest, northwest, northeast and southeast hangar bay doors on Hangar 1090 as shown on the drawings. Existing doors roll or slide horizontally on wheels guided by rails and are manually operated. Heavy railroad track type rails fixed to the concrete floor guide the doors at the bottom and support the door weight. Vertical “knife edge” tracks affixed to the building guide the doors at the top. Each hangar bay door consists of 10 each individual door leaves as shown on the drawings.

Each leaf is 12’- 0” in width and 28’ -0” in height.

2.2 Existing Conditions:

Hangar 1010, Northwest Bay: SEE Sheet 3 for pictures, general. Door leafs are number designated #1 thru #10 from left to right as shown in picture L-3.

Mechanical room exists, but is offset south such that it does not interfere with door operation. No personnel doors exist. Interior partitions are not connected to doors. All 10 door leaves, #1 thru #10, are fully operational, opening and closing the full width of the hangar bay.

Hangar 1010, Northeast Bay: SEE Sheet 4 for pictures, general. Door leafs are number designated #1 thru #10 from left to right as shown in picture L-4.

Only door leafs #3 thru #10 are currently operational. Personnel doors have been installed in the southernmost door leaf (#1) and the door fixed in the closed position. An asphalt threshold has also been placed across the rails at the personnel doors. SEE picture R-4. The adjacent #2 door leaf is not fixed, but, due to the personnel doors, has been rendered nonoperational. This #2 door leaf is in its closed position and cannot be opened further to overlap the #1 leaf as a concrete fabricated pocket stop bulkhead has been set astride the rails. The #2 leaf cannot be closed further as the rails terminate. SEE pictures general, Sheet 4. The personnel doors enter under the mezzanine access stairs and gypsum walls have been erected to partition the hangar bay from the stairwells. The absence of a mechanical room addition on the east elevation makes it feasible to return door leafs #1 and #2 to full operation should the need arise in the future. Consequently, the interior gypsum wallboard partitions are involved in the work and their construction/configuration is discussed more fully below. When personnel doors were installed in the #1 hangar door leaf, interior gypsum board partition walls were erected above and below the mezzanine to create an enclosure isolating the personnel doors and the mezzanine stairwell from the main hangar bay. See Pictures B-4 & C-4. Above and below the mezzanine, the partition wall abuts door leaf #1. The eastern edge of the partition wall abuts the #1 hangar door leaf and ties in flush with its’ northern edge. Due to the absence of as-built drawings, and short of destructive investigation, it cannot be determined the method used to attach the vertical partition wall and interior gypsum wallboard sheathing to the inside face of door leaf #1. Since it is feasible to return door leafs #1 and #2 to full operation, the work scope in this bay includes all 10 door leafs #1 thru #10.

Hangar 1010, Southeast Bay: SEE Sheet 5 for pictures, general. Door leafs are number designated #1 thru #10 from left to right as shown in picture L-5.

No mechanical rooms, personnel doors or interior partitions exist and all 10 door leaves, #1 thru #10, are fully operational, opening and closing the full width of the hangar bay.

Hangar 1060, Southwest Bay: SEE Sheet 6 for pictures, general. Door leafs are number designated #1 thru #10 from left to right as shown in picture K-6. Only door leafs #3 thru #10 are currently operational. Personnel doors have been installed in the northernmost door leaf (#1) and the door fixed in the closed position. The adjacent #2 door leaf is not fixed, but, due to the personnel doors, has been rendered non-operational. The #2 door leaf is in its closed position and cannot be opened further to overlap the #1 leaf as a steel pocket stop bulkhead has been set astride and welded to the rails. The #2 leaf cannot be closed further as the bottom rails terminate. See pictures general, Sheet

6. The personnel doors enter under the mezzanine access stairs and interior gypsum wallboard partitions have been erected to separate the hangar bay from the stairwells. See Picture E-6 & F-6. A masonry mechanical room has been constructed north of the hangar bay, centered on the west hangar elevation.

Note that the mechanical room was constructed flush with the exterior hangar wall and partially over the space originally occupied by the door pocket. Picture K-6 shows the south wall of the mechanical room and the personnel doors. The mechanical room interferes with fully opening the doors on the north half of the hangar bay. The lack of offsets in the mechanical room addition makes it infeasible to return door leafs #1 and #2 to full operation at this time.

Consequently, work scope in this bay is limited to door leafs #3 thru #10.

No interior partition wall work is required, thus, the interior gypsum partitions are not shown or discussed in detail.

Hangar 1060, Northwest Bay: SEE Sheet 7 for pictures, general. Door leafs are number designated #1 thru #10 from left to right as shown in picture K-7. Only door leafs #1 thru #8 are currently operational. Personnel doors have been installed in the southernmost door leaf (#10) and the door fixed in the closed position. The adjacent #9 door leaf is not fixed, but, due to the personnel doors, has been rendered non-operational. The #9 door leaf is in its closed position and cannot be opened further to overlap the #10 leaf as a steel pocket stop bulkhead has been set astride and welded to the rails. The #9 leaf cannot be closed further as the bottom rails terminate. See pictures general, Sheet

7. The personnel doors enter under the mezzanine access stairs and interior gypsum wallboard partitions have been erected to separate the hangar bay from the stairwells. See Picture B-7 & C-7. A masonry mechanical room has been constructed south of the hangar bay, centered on the west hangar elevation.

Note that the mechanical room was constructed flush with the exterior hangar wall and partially over the space originally occupied by the door pocket. Picture O-7 shows the north wall of the mechanical room and Picture Q-7 shows the adjacent personnel doors. The mechanical room interferes with fully opening the doors on the south half of the hangar bay. The lack of offsets in the mechanical room addition makes it infeasible to return door leafs #9 and #10 to full operation at this time. Consequently, work scope in this bay is limited to door leafs #1 thru #8. No interior partition wall work is required, thus, the interior gypsum partitions are not shown or discussed in detail.

Hangar 1060, Southeast Bay: SEE Sheet 8 for pictures, general. Door leafs are number designated #1 thru #10 from left to right as shown in picture J-8. Only door leafs #1 thru #8 are currently operational. Personnel doors have been installed in the northernmost door leaf (#10) and the door fixed in the closed position. SEE picture P-8. The adjacent #9 door leaf is not fixed, but, due to the personnel doors, has been rendered non-operational. The #9 leaf is in its closed position and cannot be opened further to overlap the #10 leaf as a steel fabricated pocket stop bulkhead has been set astride and welded to the rails. The #9 leaf cannot be closed further as the rails terminate. SEE pictures general, Sheet 8. The absence of a mechanical room addition on the east elevation makes it feasible to return door leafs #9 and #10 to full operation should the need arise in the future. Consequently, the interior gypsum wallboard partitions are involved in the work and their construction/configuration is discussed more fully below. When personnel doors were installed in the #10 hangar door leaf, interior gypsum board partition walls were erected above and below the mezzanine to create an enclosure isolating the personnel doors and the mezzanine stairwell from the main hangar bay. SEE pictures E-8 & F-8. Above the mezzanine, the walls and ceiling of the upper enclosure are separate from, and not physically connected to door leaf #10. Below the mezzanine, the eastern edge of the partition wall abuts and ties into the #9 hangar door leaf. Due to the absence of as-built drawings, and short of destructive investigation, it cannot be determined the method used to attach the vertical partition wall to the inside face of door leaf #9. Since it is feasible to return door leafs #9 and #10 to full operation, the work scope in this bay includes all 10 door leafs #1 thru #10.

Hangar 1090, Southwest Bay: SEE Sheet 9 for pictures, general. Door leafs are number designated #1 thru #10 from left to right as shown in picture L-9. Only door leafs #3 thru #10 are currently operational. Personnel doors have been installed in the northernmost door leaf (#1) and the door fixed in the closed position. The adjacent #2 door leaf is not fixed, but, due to the personnel doors, has been rendered non-operational. The #2 door leaf is in its closed position and cannot be opened further to overlap the #1 leaf as a steel pocket stop bulkhead has been set astride and welded to the rails. The #2 leaf cannot be closed further as the bottom rails terminate. See pictures general, Sheet

9. The personnel doors enter under the mezzanine access stairs and interior gypsum wallboard partitions have been erected to separate the hangar bay from the stairwells. See Pictures E-9 & F-9. A masonry mechanical room has been constructed north of the hangar bay, centered on the west hangar elevation.

Note that the mechanical room was constructed flush with the exterior hangar wall and partially over the space originally occupied by the door pocket. Picture Q-9 shows the south wall of the mechanical room and the personnel doors. The mechanical room interferes with fully opening the doors on the north half of the hangar bay. The lack of offsets in the mechanical room addition makes it infeasible to return door leafs #1 and #2 to full operation at this time.

Consequently, work scope in this bay is limited to door leafs #3 thru #10. No interior partition wall work is required, thus, the interior gypsum partitions are not shown or discussed in detail.

Hangar 1090, Northwest Bay: SEE Sheet 10 for pictures, general. Door leafs are number designated #1 thru #10 from left to right as shown in picture L-10.

Only door leafs #1 thru #8 are currently operational. Personnel doors have been installed in the southernmost door leaf (#10) and the door fixed in the closed position. The adjacent #9 door leaf is not fixed, but, due to the personnel doors, has been rendered non-operational. The #9 door leaf is in its closed position and cannot be opened further to overlap the #10 leaf as a steel pocket stop bulkhead has been set astride and welded to the rails. The #9 leaf cannot be closed further as the bottom rails terminate. See pictures general, Sheet

10. The personnel doors enter under the mezzanine access stairs and interior gypsum wallboard partitions have been erected to separate the hangar bay from the stairwells. See Pictures B-10 & C-10. A masonry mechanical room has been constructed south of the hangar bay, centered on the west hangar elevation.

Note that the mechanical room was constructed flush with the exterior hangar wall and partially over the space originally occupied by the door pocket. Picture P-10 shows the north wall of the mechanical room and Picture R-10 shows the adjacent personnel doors. The mechanical room interferes with fully opening the doors on the south half of the hangar bay. The lack of offsets in the mechanical room addition makes it infeasible to return door leafs #9 and #10 to full operation at this time. Consequently, work scope in this bay is limited to door leafs #1 thru #8. No interior partition wall work is required, thus, the interior gypsum partitions are not shown or discussed in detail.

Hangar 1090, Northeast Bay: SEE Sheet 11 for pictures, general. Door leafs are number designated #1 thru #10 from left to right as shown in picture L-11.

Only door leafs #3 thru #10 are currently operational. Personnel doors have been installed in the southernmost door leaf (#1) and the door fixed in the closed position. The adjacent #2 door leaf is not fixed, but, due to the personnel doors, has been rendered non-operational. This #2 door leaf is in its closed position and cannot be opened further to overlap the #1 leaf as a steel fabricated pocket stop bulkhead has been set astride and welded to the rails. The #2 leaf cannot be closed further as the rails terminate. SEE pictures general, Sheet

11. The personnel doors enter under the mezzanine access stairs and gypsum walls have been erected to partition the hangar bay from the stairwells. The absence of a mechanical room addition on the east elevation makes it feasible to return door leafs #1 and #2 to full operation should the need arise in the future.

Consequently, the interior gypsum wallboard partitions are involved in the work and their construction/configuration is discussed more fully below. When personnel doors were installed in the #1 hangar door leaf, interior gypsum board partition walls were erected above and below the mezzanine to create an enclosure isolating the personnel doors and the mezzanine stairwell from the main hangar bay. See Pictures B-11 & C-11. Above the mezzanine, the walls and ceiling of the upper enclosure are separate from, and not physically connected to door leaf #1. Below the mezzanine, the eastern edge of the partition wall abuts and ties into the #2 hangar door leaf. Due to the absence of as-built drawings, and short of destructive investigation, it cannot be determined the method used to attach the vertical partition wall to the inside face of door leaf #2. Since it is feasible to return door leafs #1 and #2 to full operation, the work scope in this bay includes all 10 door leafs #1 thru #10.

Hangar 1090, Southeast Bay: SEE Sheet 12 for pictures, general. Door leafs are number designated #1 thru #10 from left to right as shown in picture L-12. Only door leafs #1 thru #8 are currently operational. Personnel doors have been installed in the northernmost door leaf (#10) and the door fixed in the closed position. The adjacent #9 door leaf is not fixed, but, due to the personnel doors, has been rendered non-operational. This #9 door leaf is in its closed position and cannot be opened further to overlap the #10 leaf as a steel fabricated pocket stop bulkhead has been set astride and welded to the rails. The #9 leaf cannot be closed further as the rails terminate. SEE pictures general, Sheet

12. The personnel doors enter under the mezzanine access stairs and gypsum walls have been erected to partition the hangar bay from the stairwells. The absence of a mechanical room addition on the east elevation makes it feasible to return door leafs #9 and #10 to full operation should the need arise in the future.

Consequently, the interior gypsum wallboard partitions are involved in the work and their construction/configuration is discussed more fully below. When personnel doors were installed in the #10 hangar door leaf, interior gypsum board partition walls were erected above and below the mezzanine to create an enclosure isolating the personnel doors and the mezzanine stairwell from the main hangar bay. See Pictures E-12 & F-12. Above the mezzanine, the walls and ceiling of the upper enclosure are separate from, and not physically connected to door leaf #10. Below the mezzanine, the eastern edge of the partition wall abuts and ties into the #9 hangar door leaf. Due to the absence of as-built drawings, and short of destructive investigation, it cannot be determined the method used to attach the vertical partition wall to the inside face of door leaf #9. Since it is feasible to return door leafs #9 and #10 to full operation, the work scope in this bay includes all 10 door leafs #1 thru #10.

2.3 Work Scope:

Hangar 1010, Northwest Bay

Bottom Door Rails: All bottom door rails as prescribed below and in Section

08342 herein.

Wheels and Housings: All wheels and housings as prescribed below and in Section 08342 herein.

Top Door Guide Assembly: All top door guide assemblies as prescribed below and in Section 08342 herein.

Top Guide Bumpers: All top guide bumpers as prescribed below and in Section 08342 herein.

Pocket Stop Bumpers: All pocket stop bumpers as prescribed below.

Weather Seals: All weather seals as prescribed below.

Hangar 1010, Northeast Bay

Bottom Door Rails: All bottom door rails as prescribed below and in Section 08342 herein.

Wheels and Housings: All wheels and housings as prescribed below and in Section 08342 herein.

Top Door Guide Assembly: All top door guide assemblies as prescribed below and in Section 08342 herein.

Top Guide Bumpers: All top guide bumpers as prescribed below and in Section 08342 herein.

Pocket Stop Bumpers: All pocket stop bumpers as prescribed below. Demolish existing concrete pocket stop bulkhead. SEE picture R-4. Install new steel fabricated pocket stop bulkhead similar to existing on other hangar bays in its place by welding across new rails.

Weather Seals: All weather seals as prescribed below. In addition, the contractor shall:

a. Accomplish any and all demolition of gypsum personnel door enclosures necessary to complete the work and any and all work necessary to restore gypsum enclosures to their existing condition when the work is complete. This shall include furring, gypsum wallboard, tape, bed, texture and paint as necessary and as directed by the Contracting Officer at no additional cost to the government.

b. Fabricate and install new diamond plate steel threshold at existing personnel doors as shown in picture S-4. To prevent tripping, new threshold shall be shimmed to be flush with pavement and door bottom when welded in place. The contractor shall also fabricate and install door stops for each personnel door, welded to the rails, as shown in picture S-4.

c. The contractor shall remove and replace any and all personnel door hardware, such as pulls and closers, as necessary to complete the work.

Hangar 1010, Southeast Bay

Bottom Door Rails: All bottom door rails as prescribed below and in Section 08342 herein.

Wheels and Housings: All wheels and housings as prescribed below and in Section 08342 herein.

Top Door Guide Assembly: All top door guide assemblies as prescribed below and in Section 08342 herein.

Top Guide Bumpers: All top guide bumpers as prescribed below and in Section 08342 herein.

Pocket Stop Bumpers: All pocket stop bumpers as prescribed below and in Section 08342 herein.

Weather Seals: All weather seals as prescribed below and in Section 08342 herein.

Hangar 1060, Southwest Bay

Bottom Door Rails: All bottom door rails except those under door leaf #1 and those in the north door pocket adjacent to the mechanical room as prescribed below and in Section 08342 herein.

Wheels and Housings: All wheels and housings except those on door leaf #1 and door leaf #2 as prescribed below and in Section 08342 herein.

Top Door Guide Assembly: All top door guide assemblies except those on door leaf #1 and door leaf #2 as prescribed below and in Section 08342 herein.

Top Guide Bumpers: All top guide bumpers except those for door leaf #1 and door leaf #2 as prescribed below and in Section 08342 herein.

Pocket Stop Bumpers: All pocket stop bumpers as prescribed below, including those on the steel fabricated pocket stop bulkhead see Section 08342 herein.

Weather Seals: All weather seals as prescribed below and in Section 08342 herein.

In addition, the contractor shall:

a. Demolish existing concrete threshold at existing personnel doors and remove existing steel fabricated pocket stop bulkhead.

b. Reinstall existing or fabricate and install new steel fabricated pocket stop bulkhead by welding across the rails.

c. Fabricate and install new diamond plate steel threshold at existing personnel doors as shown in picture Q-6. To prevent tripping, new threshold shall be shimmed to be flush with pavement and door bottom when welded in place. The contractor shall also fabricate and install door stops for each personnel door, welded to the rails, as shown in picture Q-6.

d. The contractor shall remove and replace any and all personnel door hardware, such as pulls and closers, as necessary to complete the work.

Hangar 1060, Northwest Bay

Bottom Door Rails: All bottom door rails except those under door leaf #10 and those in the south door pocket adjacent to the mechanical room as prescribed below and in Section 08342 herein.

Wheels and Housings: All wheels and housings except those on door leaf #9 and door leaf #10 as prescribed below and in Section 08342 herein.

Top Door Guide Assembly: All top door guide assemblies except those on door leaf #9 and door leaf #10 as prescribed below and in Section 08342 herein.

Top Guide Bumpers: All top guide bumpers except those for door leaf #9 and door leaf #10 as prescribed below and in Section 08342 herein.

Pocket Stop Bumpers: All pocket stop bumpers as prescribed below, including those on the steel fabricated pocket stop bulkhead see Section 08342 herein.

Weather Seals: All weather seals as prescribed below and in Section 08342 herein.

In addition, the contractor shall:

a. Demolish existing concrete threshold at existing personnel doors and remove existing steel fabricated pocket stop bulkhead.

b. Reinstall existing or fabricate and install new steel fabricated pocket stop bulkhead by welding across the rails.

c. Fabricate and install new diamond plate steel threshold at existing personnel doors as shown in picture R-7. To prevent tripping, new threshold shall be shimmed to be flush with pavement and door bottom when welded in place. The contractor shall also fabricate and install door stops for each personnel door, welded to the rails, as shown in picture R-7.

d. The contractor shall remove and replace any and all personnel door hardware, such as pulls and closers, as necessary to complete the work.

Hangar 1060, Southeast Bay

Bottom Door Rails: All bottom door rails as prescribed below and in Section 08342 herein.

Wheels and Housings: All wheels and housings as prescribed below and in Section 08342 herein.

Top Door Guide Assembly: All top door guide assemblies as prescribed below and in Section 08342 herein.

Top Guide Bumpers: All top guide bumpers as prescribed below and in Section 08342 herein.

Pocket Stop Bumpers: All pocket stop bumpers as prescribed below. Demolish existing steel pocket stop bulkhead. SEE picture P-8. Install new steel fabricated pocket stop bulkhead similar to existing on other hangar bays in its place by welding across new rails.

Weather Seals: All weather seals as prescribed below and in Section 08342 herein.

In addition, the contractor shall:

a. Accomplish any and all demolition of gypsum personnel door enclosures necessary to complete the work and any and all work necessary to restore gypsum enclosures to their existing condition when the work is complete. This shall include furring, gypsum wallboard, tape, bed, texture and paint as necessary and as directed by the Contracting Officer at no additional cost to the government.

b. Fabricate and install new diamond plate steel threshold at existing personnel doors as shown in picture Q-8. To prevent tripping, new threshold shall be shimmed to be flush with pavement and door bottom when welded in place.

The contractor shall also fabricate and install door stops for each personnel door, welded to the rails, as shown in picture Q-8.

c. The contractor shall remove and replace any and all personnel door hardware, such as pulls and closers, as necessary to complete the work.

Hangar 1090, Southwest Bay

Bottom Door Rails: All bottom door rails except those under door leaf #1 and those in the north door pocket adjacent to the mechanical room as prescribed below and in Section 08342 herein.

Wheels and Housings: All wheels and housings except those on door leaf #1 and door leaf #2 as prescribed below and in Section 08342 herein.

Top Door Guide Assembly: All top door guide assemblies except those on door leaf #1 and door leaf #2 as prescribed below and in Section 08342 herein.

Top Guide Bumpers: All top guide bumpers except those for door leaf #1 and door leaf #2 as prescribed below and in Section 08342 herein.

Pocket Stop Bumpers: All pocket stop bumpers as prescribed below, including those on the steel fabricated pocket stop bulkhead see Section 08342 herein.

Weather Seals: All weather seals as prescribed below and in Section 08342 herein.

In addition, the contractor shall:

a. Demolish existing concrete threshold at existing personnel doors and remove existing steel fabricated pocket stop bulkhead.

b. Reinstall existing or fabricate and install new steel fabricated pocket stop bulkhead by welding across the rails.

c. Fabricate and install new diamond plate steel threshold at existing personnel doors as shown in picture S-9. To prevent tripping, new threshold shall be shimmed to be flush with pavement and door bottom when welded in place.

The contractor shall also fabricate and install door stops for each personnel door, welded to the rails, as shown in picture S-9.

d. The contractor shall remove and replace any and all personnel door hardware, such as pulls and closers, as necessary to complete the work.

Hangar 1090, Northwest Bay

Bottom Door Rails: All bottom door rails except those under door leaf #10 and those in the south door pocket adjacent to the mechanical room as prescribed below and in Section 08342 herein.

Wheels and Housings: All wheels and housings except those on door leaf #9 and door leaf #10 as prescribed below and in Section 08342 herein.

Top Door Guide Assembly: All top door guide assemblies except those on door leaf #9 and door leaf #10 as prescribed below and in Section 08342 herein.

Top Guide Bumpers: All top guide bumpers except those for door leaf #9 and door leaf #10 as prescribed below and in Section 08342 herein.

Pocket Stop Bumpers: All pocket stop bumpers as prescribed below, including those on the steel fabricated pocket stop bulkhead see Section 08342 herein.

Weather Seals: All weather seals as prescribed below and in Section 08342 herein.

In addition, the contractor shall:

a. Demolish existing concrete threshold at existing personnel doors and remove existing steel fabricated pocket stop bulkhead.

b. Reinstall existing or fabricate and install new steel fabricated pocket stop bulkhead by welding across the rails.

c. Fabricate and install new diamond plate steel threshold at existing personnel doors as shown in picture S-10. To prevent tripping, new threshold shall be shimmed to be flush with pavement and door bottom when welded in place.

The contractor shall also fabricate and install door stops for each personnel door, welded to the rails, as shown in picture S-10.

d. The contractor shall remove and replace any and all personnel door hardware, such as pulls and closers, as necessary to complete the work.

Hangar 1090, Northeast Bay

Bottom Door Rails: All bottom door rails as prescribed below prescribed below and in Section 08342 herein.

Wheels and Housings: All wheels and housings as prescribed below and in Section 08342 herein.

Top Door Guide Assembly: All top door guide assemblies as prescribed below and in Section 08342 herein.

Top Guide Bumpers: All top guide bumpers as prescribed below and in Section 08342 herein below prescribed below and in Section 08342 herein.

Pocket Stop Bumpers: All pocket stop bumpers as prescribed below.

Demolish existing steel pocket stop bulkhead. SEE picture P-11. Install new steel fabricated pocket stop bulkhead similar to existing on other hangar bays in its place by welding across new rails.

Weather Seals: All weather seals as prescribed below and in Section 08342 herein.

In addition, the contractor shall: Accomplish any and all demolition of gypsum personnel door enclosures necessary to complete the work and any and all work necessary to restore gypsum enclosures to their existing condition when the work is complete. This shall include furring, gypsum wallboard, tape, bed, texture and paint as necessary and as directed by the Contracting Officer at no additional cost to the government.

a. Fabricate and install new diamond plate steel threshold at existing personnel doors as shown in picture S-11. To prevent tripping, new threshold shall be shimmed to be flush with pavement and door bottom when welded in place.

The contractor shall also fabricate and install door stops for each personnel door, welded to the rails, as shown in picture S-11.

c. The contractor shall remove and replace any and all personnel door hardware, such as pulls and closers, as necessary to complete the work.

Hangar 1090, Southeast Bay

Bottom Door Rails: All bottom door rails as prescribed below and in Section 08342 herein.

Wheels and Housings: All wheels and housings as prescribed and in Section 08342 herein.

Top Door Guide Assembly: All top door guide assemblies as prescribed below and in Section 08342 herein.

Top Guide Bumpers: All top guide bumpers as prescribed below and in Section 08342 herein below prescribed below and in Section 08342 herein.

Pocket Stop Bumpers: All pocket stop bumpers as prescribed below. Demolish existing steel pocket stop bulkhead. Install new steel fabricated pocket stop bulkhead similar to existing on other hangar bays in its place by welding across new rails.

Weather Seals: All weather seals as prescribed below and in Section 08342 herein.

In addition, the contractor shall:

a. Accomplish any and all demolition of gypsum personnel door enclosures necessary to complete the work and any and all work necessary to restore gypsum enclosures to their existing condition when the work is complete. This shall include furring, gypsum wallboard, tape, bed, texture and paint as necessary and as directed by the Contracting Officer at no additional cost to the government.

b. Fabricate and install new diamond plate steel threshold at existing personnel doors as shown in picture S-12. To prevent tripping, new threshold shall be shimmed to be flush with pavement and door bottom when welded in place.

The contractor shall also fabricate and install door stops for each personnel door, welded to the rails, as shown in picture S-12.

c. The contractor shall remove and replace any and all personnel door hardware, such as pulls and closers, as necessary to complete the work.

2.3.1

The contractor shall also provide and install cane bolt door locks for each door leaf that rests on new bottom door rails when closed. Each leaf is configured to accept one cane bolt that projects through the bottom door sill into the cane bolt door lock affixed to the rail. Fabricate cane bolt locks of 3/8” flat steel stock. Weld to new bottom door rails in the proper location. The contractor is not required to furnish any new cane bolts.

2.3.2

Also, the top of the existing bottom door rails is set slightly above the surrounding pavement grade resulting in an undesirable “bump”. The contractor shall install new bottom door rails with the top of the bottom rails set flush with the surrounding pavement surface. SEE Section 1/2/2, Sheet 2 of 12 of the drawings. New wheels and housings shall be adjusted so as to maintain the relationship between top door guide and the vertical “knife edge” track affixed to the building. Also note that, in the new installation, the concrete “fill” between the bottom door rails is flush with the surrounding pavement grade at all points. Rail drainage is provided by narrow sloped slots adjacent to each rail.

2.4 Description of Required Work:

2.4.1

Bottom Door Rails: Demolish existing concrete rail encasement, remove existing rolling hangar door bottom rails and rail cross-tie beams as shown on the drawings. Furnish and install new bottom door rails, cross-tie beams and concrete encasement as specified and as shown on the drawings. Concrete encasement shall be placed and shall incorporate provisions such as drains or grates and drainage piping, along with varying flowline gradient as necessary to ensure positive drainage of the area between the rails. Under no circumstances shall new rails, cross-tie beams or concrete encasement be placed such that water stands or will stand between the rails upon completion of the work.

2.4.2 Bottom Door Wheels and Housings:

Remove existing 13” bottom door wheels and housings from existing rolling hangar doors, entire. Furnish and install new bottom door wheels and housings as specified and as shown on the drawings.

2.4.3 Top Door Guide Assembly:

Remove existing top door guide assemblies from existing rolling hangar doors, entire. Furnish and install new top door guide assemblies as specified and as shown on the drawings.

2.4.4 Top Guide Bumpers:

Remove existing top guide bumper assemblies from existing rolling hangar doors, entire. Furnish and install new top guide bumper assemblies as specified and as shown on the drawings.

2.4.5 Pocket Stop Bumpers:

Remove and replace existing pocket stop bumpers at pocket stop bulkheads, entire.

2.4.6 Weather Seals:

Remove existing vertical, bulb type weather seals between existing doors, complete with fasteners and seal retainers. Furnish and install new vertical, bulb type weather seals between hangar doors complete with new fasteners and seal retainers. Replacement of vertical weather seals to include replacement of seals existing where doors butt when closed and replacement of seal fixed to the hangar bulkhead adjacent to the furthest north and furthest south doors. Remove existing horizontal, flap type weather seals, complete with fasteners and seal retainers. Furnish and install new horizontal, flat type weather seals complete with new fasteners and seal retainers.

3. WORK HOURS, UTILITY OUTAGE, AND SPECIAL CONDITIONS:

3.1 Work Hours:

Work hours shall be 7:30 a.m. to 4:30 p.m., Monday through Friday, exclusive of Federal holidays. At the option of the government and with approval of the Contracting Officer, work may be permitted on Federal holidays, weekends or after 4:30 p.m. daily at no additional cost to the government. The contractor shall provide written notice to the Contracting Officer at least 48 hours before starting the scheduled work.

3.2 Utility Outage: Not Used.

3.3 Special Conditions:

3.3.1 Contractor is responsible for coordinating with any contracted-services supplier when the contracted services supplier's equipment must be removed, installed, reinstalled or be otherwise affected or the supplier's personnel must be rescheduled to accommodate contractor's work.

3.3.2 Work shall be timed such that doors may be closed and the facility secured during freezing temperatures. Depending on bid opening date, multiple crews may be necessary. Delayed notice to proceed may also be employed if most advantageous to the government. Once work on a bay begins, it shall be prosecuted in the most expeditious manner possible to limit the time the bay is open, exposed to weather and without security, to the absolute minimum.

3.3.2 Unless otherwise approved, work on both hangar doors servicing any hangar bay may not be underway simultaneously. Example: Work on Hangar 1010 Northwest doors and Hangar 1010 Northeast doors may not be underway at the same time. One door, Northwest or Northeast, must be kept operational at all times during the work.

4. BASE FIRE REGULATIONS:

4.1 The contractor shall comply with Base Fire Regulations in SAFBI 32-2001, 10 August 98. The contractor shall use no explosives or fire in performing the work.

Contractor shall understand and comply with current Occupational Safety and Health Administration welding and cutting requirements.

5. ENVIRONMENTAL REQUIREMENTS:

5.1 Compliance with Environmental Laws:

The contractor shall comply, and assure that all subcontractors comply, with all applicable federal, state, and local laws, regulations, ordinances, policies and standards related to environmental matters. The contractor shall also comply, and assure that all subcontractors comply, with all applicable specific instructions, policies, or references contained herein. Published local policies and procedures can be reviewed at the Base Environmental Coordinators office, Bldg 1402, phone (940) 676-6840.

5.2 Hazardous Materials:

For the purposes of this specification, Hazardous Materials (HM) are defined as any product, material, chemical or substance listed in 49 CFR 172.101, as revised 1 Oct 97, and 40 CFR 302-304, as revised 1 Jul 97.

5.2.1

Absolutely no hazardous materials will be brought onto Sheppard AFB until that material is authorized for use, by the Environmental, Safety, and Occupational Health Team and properly recorded in the Air Force Environmental Management Information System. Point of contact to initiate this process is the Base Environmental Coordinator’s office (82 CES/CEVP), Bldg. 1402, telephone (940) 676-7842. The requirements apply for all hazardous material that the user intends to bring onto government property for a particular process or application. Prior to introducing any hazardous material onto Sheppard AFB, the contractor shall submit, to the Contracting Officer, on AF Form 3000, an AF Form 3952 Chemical/Harzardous Material Authorization Request, Material Safety Data Sheets (MSDS’ s) and any other supporting documentation for each hazardous chemical proposed for use, IAW SAFBI 32-7001.

5.3 Hazardous and Special Waste Generated by the Contractor:

For the purposes of this specification, hazardous and special wastes shall include those identified in 40 CFR 261, (Hazardous Waste Identification) as revised 1 Jul 97, and any wastes identified as either hazardous or Special Waste by the Texas Commission on Environmental Quality in 30 TAC 324, 330- 335, as revised 6 Mar 96.

5.3.1

All hazardous waste or special waste generated by the contractor during or as a result of this project shall be identified, characterized, containerized, and transported to a permitted disposal facility in strict accordance with the requirements of 40 CFR 260-279 (Hazardous Waste and Used Oil Regulations), as revised 1 Jul 97, 30 TAC 324, 330-335, (TCEQ Industrial and Hazardous Waste Regulations), as revised 6 Mar 96, and SAFB Hazardous Waste Management Plan, dated 15 Apr 97. Any anticipated hazardous or special waste generation shall be identified to the Contracting Officer prior to ANY generation of such waste. The Base Environmental Coordinator will assist the contractor in determining any special handling or storage procedures.

5.4 Unidentified Hazardous or Regulated Material/Waste Encountered by the Contractor:

The contractor shall notify the Contracting Officer upon encountering any material, not identified in the contract documents, thought to be hazardous to workers, personnel in the area, or the environment. The government shall be responsible for characterization, storage, transportation and disposal of the waste, if necessary.

5.5 Asbestos:

To the best of the government’s knowledge, no asbestos-containing material (ACM) will be disturbed by this project.

5.6 Lead Based Paint (LBP):

5.6.1

Most, if not all, metal associated with the hangar doors, to include frames, pulls, wheel housings, bumpers, guides and other associated hardware has been tested and is positive for lead-based paint (LBP).

5.6.2

This contract contains no provisions or requirements for abatement of lead-based paint (LBP). The contractor shall be aware that lead based paint (LBP) exists in the work area. The contractor shall take appropriate measures and shall conduct his work in such a manner that (LBP) is not unnecessarily disturbed and contract workers and government personnel in proximity of the work are protected from exposure. Should the contractor conclude that the work cannot be continued safely, as a result of (LBP), he shall notify the Contracting Officer immediately. The government will assume responsibility for and will conduct any and all testing and/or (LBP) abatement necessary, in the opinion of the government, at no cost to the contractor.

5.7 Nuisance and Polluting Activity Prohibited:

Polluting, dumping, or discharging of any harmful, nuisance, or regulated materials (such as concrete truck washout, vehicle maintenance fluids, residue from saw cutting operations, solid waste and hazardous substances) into building drains, site drains, streams, waterways, holding ponds or to the ground surface will not be permitted. The contractor shall be held responsible for any damages that may result. Further, the contractor shall conduct activities in such a fashion to avoid creating any legal nuisance, including but not limited to, suppressing noise and dust, controlling erosion, and implementing other measures as necessary to minimize off-site impacts of work activities.

5.8 Recycled and Recovered Materials in Construction:

The contractor shall meet the requirements of the affirmative procurement provisions of Section 6002 of the Resource Conservation and Recovery Act and Executive Order 13101, “Greening the Government through Waste Prevention, Recycling and Federal Acquisition”, which require the use of recycled and recovered materials and products identified in 40 CFR, Chapter 247. Materials listed under this authority throughout this statement of work shall meet the recovered/recycled material requirements listed in the specifications. If the solicitation identifies these products, the government has determined that the items are available competitively, are available within a reasonable time and are available at a reasonable price. Such materials are:

Pozolanic materials as specified in Section 08342, paragraph 2.8.4.

6. SITE MAINTENANCE AND CLEANUP:

6.1 Site Maintenance:

The contractor shall protect adjacent property, buildings, and their contents from dust, dirt, or other materials. Contractor is to wet down dry materials, settle debris and prevent blowing dust. The contractor shall maintain work areas in a neat, clean, and safe condition. Work areas shall, at a minimum, be cleaned daily.

6.2 Cleanup:

The contractor shall collect all trash, debris, refuse, garbage, etc., which he generates and place it in appropriate approved containers daily. The aforementioned materials shall be hauled from the site by appropriate means daily, unless otherwise approved by the Contracting Officer. Disposal shall be outside the limits of government property. Disposal shall be at a municipal solid waste landfill or by other approved methods and shall conform to all local, state, and federal guidelines, criteria, and regulations.

7. ENERGY CONSERVATION:

The contractor shall use good judgment in the conservation of government utilities. The contractor shall adhere to and enforce prevailing energy conservation practices.

8. RESPONSIBILITY:

8.1

The above summaries 1 through 7 do not in any way limit the responsibility of the contractor to perform all work and furnish all plant, labor, and materials required by the contract documents referenced herein.

8.2 Approval for Excavation:

Before performing any excavation, grading, trenching or other operations whereby existing underground utilities may be damaged, the contractor shall complete AF Form 103, Base Civil Engineering Work Clearance Request (commonly referred to as a "Digging Permit"). The form, as received by the contractor, will list points of contact (POC's) and telephone numbers for each of the various underground utilities (Telephone, gas, water, electrical, etc.) existing in the work area. It shall be the contractor's responsibility to contact POC's for each utility listed, request that any utilities existing in the work area be marked, and obtain each POC's certification on the form. After each POC has been contacted and has certified such by signing or initialing the form, the form shall then be delivered to the Government inspector. The Government (or owner, in the case of privately owned utilities such as telephone service) will be responsible for marking the location of utilities in the work area.

Typically, flags and/or paint will be used to mark the earth and/or pavement to provide semi-permanent identification of the utility location. No indication/marking of the depth of the utility below the existing grade will be provided. The contractor shall allow sufficient time for the Government to accomplish this task at no additional cost to the Government. Once the utilities are marked, the contractor shall be responsible for maintaining the flags/paint at their proper location(s). No excavation will be permitted until all utilities existing in the area have been marked. The contractor shall be responsible for the repair of any underground utilities damaged as a result of his work provided that the actual location of the damaged utility is within a lateral zone 3 feet on either side of the Government/Commercial-provided mark indicating the location of that utility. This 3-foot zone on either side of the mark provided is a hand-dig only area. Since depth of the utility will not be provided, the contractor assumes responsibility for any depth determination necessary.

9. STORAGE AND PARKING:

9.1

Contractor storage and parking shall be near the job site, as designated by the Contracting Officer.

9.2 Petroleum Storage:

Petroleum storage will not be permitted on Sheppard AFB.

9.3 Storage Areas:

The contractor shall keep all storage areas free of debris, refuse, spills, leaks, stains, and splashes. All storage areas shall be maintained in a neat, clean, and safe condition. Any areas that incur contamination by any hazardous material or substances shall be cleaned up immediately by the contractor at no additional expense to the government. Remediation may include subsequent soil analysis if directed by the government.

10. TESTING PARAGRAPHS:

All testing indicated in these contract documents to be performed by the government will be performed only at the option of the government.

11. SAFETY:

11.1

The contractor shall comply with all applicable Air Force Occupational Health and Safety Standards and Regulations. The contractor is also required to comply with the American General Contractors' Safety Manual and the Occupational Safety and Health Act.

11.2

The contractor must obtain authorization to bring any nonexempt radioactive material (such as density gauges or moisture meters) onto Sheppard AFB by contacting the Nuclear Regulatory Commission, Region IV Office, using the NRC Form 241. Before bringing any radioactive material onto Sheppard AFB, the contractor shall forward a copy of the NRC Form 241 to the Contracting Officer.

12. COLOR AND MATERIAL SELECTIONS:

Not Used

13. PHASING REQUIREMENTS:

Not Used.

14. TREES, SHRUBS AND HEDGES:

Not Used.

SECTION 08342

REPAIR STEEL SLIDING HANGAR DOORS

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by the basic designation only.

AMERICAN INSTITUTE OF STEEL CONSTRUCTION (AISC)

AISC S335 (1989) Structural Steel Buildings Allowable Stress Design and Plastic Design

AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)

ASTM A 36/A 36M (1997; Rev. A) Carbon Structural Steel

ASTM C 150 (1996) Portland Cement

ASTM C 618 (1996) Coal Fly Ash and Raw or Calcined Natural…