Addendum_2_Items_0003.pdf
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- Solicitation number
- 140P2024R0010
About this file
This document is an addendum to a federal contract opportunity. The addendum includes changes to specifications for Piping System 9, which is a buried force main for sanitary sewer and similar applications. The key details are:
The addendum specifies the materials, fittings, and joint requirements for 2-inch and 4-inch buried piping, including PVC Schedule 80 and HDPE SDR 17 (125 psi). It also provides test requirements such as using water as the test medium, pressure testing at 1.25 times the working pressure, and a 6-hour duration. Additionally, the addendum includes changes to drawings, such as revising the size of the force main serving the Winter Solids Building from 4-inch to 2-inch.
The related federal contract opportunity is Solicitation Number 140P2024R0010 for the rehabilitation and expansion of a wastewater treatment plant, issued by the Department of the Interior National Park Service National Office.
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CHANGES TO SPECIFICATIONS
Section 40 05 00, Paragraph 3.12, Add Piping System 9:
Piping System 9 – Buried Force Main for Sanitary Sewer and Similar Applications.
1. General:
a. Piping symbol and service:
1) FM – Force Main (Sanitary Sewer or Similar)
b. Test requirements:
1) Test medium: Water.
2) Pressure: 1.25 x working pressure.
3) Duration: 6 hours.
c. Gaskets and O-rings:
1) O-rings: Neoprene or rubber.
2) Flanged, push-on and mechanical joints (ductile iron): Rubber, AWWA/ANSI C111/A21.11.
2. System components:
a. Pipe size, 2 inches:
1) Buried service:
a) Materials: PVC, Schedule 80.
b) Reference: ASTM D1785.
c) Lining: None.
d) Coating: None.
e) Fittings: Solvent welded, PVC, Schedule 80.
f) Joints: Solvent cement weld.
b. Pipe size, 4 inches:
1) Buried service:
a) Materials: HDPE, SDR 17 (125 psi), Ductile Iron Pipe Size (DIPS)
(1) Reference: AWWA/ANSI C909, ASTM F714, ASTM D3035, ASTM D3350
Cell Class 445574C/E
(2) Lining: None.
(3) Coating: None.
(4) Fittings: Butt Fusion Fittings, ASTM D3261
(5) Joints: Butt Fusion Joints
Section 40 61 96H, Paragraph 3.2.D, Delete Sample Pumps (02-SAP-1, 02-SAP-2, 02-SAP-3, and 02-
SAP-4)
CHANGES TO DRAWINGS
Drawing 00-D004:
Replace 00-D004 with the attached Sheet 00-D004. The Tertiary Treatment Process Diagram has been revised.
Drawing 01-C806:
Change the size of the forcemain serving the Winter Solids Building from 4-inch to 2-inch.
Drawing 09-Y612:
Delete sample pumps 02-SAP-1, 02-SAP-2, 02-SAP-3, and 02-SAP-4.
ATTACHMENTS
The items listed below and bound to and a part of this Addendum.
• Drawing 00-D004
| Piping System 9 – Buried Force Main for Sanitary Sewer and Similar Applications. |
| 1. General: |
| a. Piping symbol and service: |
| 1) FM – Force Main (Sanitary Sewer or Similar) |
| b. Test requirements: |
| 1) Test medium: Water. |
| 2) Pressure: 1.25 x working pressure. |
| 3) Duration: 6 hours. |
| c. Gaskets and O-rings: |
| 1) O-rings: Neoprene or rubber. |
| 2) Flanged, push-on and mechanical joints (ductile iron): Rubber, AWWA/ANSI C111/A21.11. |
| 2. System components: |
| a. Pipe size, 2 inches: |
| 1) Buried service: |
| a) Materials: PVC, Schedule 80. |
| b) Reference: ASTM D1785. |
| c) Lining: None. |
| d) Coating: None. |
| e) Fittings: Solvent welded, PVC, Schedule 80. |
| f) Joints: Solvent cement weld. |
| b. Pipe size, 4 inches: |
| 1) Buried service: |
| a) Materials: HDPE, SDR 17 (125 psi), Ductile Iron Pipe Size (DIPS) |
| (1) Reference: AWWA/ANSI C909, ASTM F714, ASTM D3035, ASTM D3350 Cell Class 445574C/E |
| (2) Lining: None. |
| (3) Coating: None. |
| (4) Fittings: Butt Fusion Fittings, ASTM D3261 |
| (5) Joints: Butt Fusion Joints |
ATTACHMENTS
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