01630_Substitution_Procedures_2026.pdf
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- Solicitation number
- 101624
- Issued by
- Prince George's County, Maryland
About this file
This is a Standard Specifications document for Section 01630 on Substitution Procedures issued by the Washington Suburban Sanitary Commission (WSSC) in Maryland for use in 2026 construction contracts. The document outlines the process for contractors to request substitutions of specified materials, articles, or methods when products are identified as "or equal" in contract specifications. Substitution requests must be submitted no later than 30 days after the Notice to Proceed and require submission of three copies of complete data including manufacturer identification and literature, product performance and test data, reference standards, samples where appropriate, and references to similar projects with installation dates and contact information. For construction methods, contractors must provide detailed descriptions, illustrative drawings, and references to similar projects where the method was employed. All substitution requests must demonstrate how the proposed item compares to the specified product or method and detail any impacts on the construction schedule or other contracts.
The Engineer's decision regarding substitution evaluations is final and binding, and all approved substitutions must be incorporated into the contract through Change Order. Contractor requests for time extensions or additional costs resulting from submission, acceptance, or rejection of substitutions will be evaluated in accordance with Contract Documents. Notably, no substitutions are permitted when materials, articles, or methods are specified without the "or equal" phrase. The cost of any redesigns necessitated by substituted items remains the responsibility of the Contractor. Compliance with substitution procedures is considered incidental to the contract and will not be separately measured or paid.
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Text version
01630-1 2026
STANDARD SPECIFICATIONS
SECTION 01630
SUBSTITUTION PROCEDURES
PART 1 GENERAL
1.1 DESCRIPTION
A. Section includes Substitution Bid and Submittal Process.
1.2 SUBSTITUTION REQUIREMENTS
A. When material, article, or method is specified using name of proprietary product manufacturer, vendor, or method followed by phrase "or equal," specific item mentioned establishes basis upon which bids are to be prepared.
1. Other manufacturers' materials, articles, and methods not named will be considered as substitutions provided required information is submitted on “FORM FOR SUBSTITUTIONS FOR SPECIFIED ITEMS” and will not require substantial revisions of Contract Documents.
2. This applies to specific construction methods when required by Contract Documents.
B. Whenever material, article, or method is specified or described without phrase "or equal," no substitutions will be allowed.
C. Cost for redesigns due to substituted items are responsibility of Contractor.
D. Contractor certifies the following in making their request for substitution(s).
1. Has personally investigated proposed product or method and determined it is equal in all respects to that specified.
2. Will furnish same guarantee for substitution as for product or method specified.
3. Will coordinate installation of accepted substitution into Work, making design and construction changes to complete Work in all respects following Contract requirements without additional cost to the Commission.
E. Requests for substitutions will not be considered except as stated below:
1. Specified material or method is unavailable, due to cause(s) stated in General Conditions, Article 15.5.1.
a. Submit data to permit complete analysis of the proposed substitution.
1.3 SUBMITTAL OF DATA FOR PROPOSED SUBSTITUTIONS
A. In order for substitutions that do not change design intent to be considered, submit no later than 30 days after date of Notice to Proceed, 3 copies of complete data set forth
01630-2 2026 herein to permit complete analysis of proposed substitutions listed on submitted “FORM
FOR SUBSTITUTIONS FOR SPECIFIED ITEMS”.
1. For Products.
a. Identification including manufacturer's name and address.
b. Manufacturer's literature, including but not necessarily limited to:
1) Product description, performance, and test data.
2) Reference standards.
c. Samples where appropriate.
d. Name and address of similar projects on which product was used and dates of installation with contact name and telephone number.
2. For Construction Methods.
a. Detailed description of proposed method.
b. Drawings illustrating methods.
c. Name and address of similar projects on which method was used and dates of use with contact name and telephone number.
3. Comparison of proposed substitution with product or method specified.
4. Data relating to impact on construction schedule by proposed substitution.
5. Impact on other contracts.
1.4 APPROVAL OF SUBSTITUTION
A. Engineer's decision regarding evaluation of substitutions will be final and binding.
B. Request for time extensions and additional costs based on submission, acceptance, or rejection of substitutions will be evaluated following Contract Documents.
C. All approved substitutions will be incorporated into Contract by Change Order.
PART 2 PRODUCTS
NOT USED
PART 3 EXECUTION
NOT USED
PART 4 MEASUREMENT AND PAYMENT
4.1 Providing for and complying with requirements in this Section will not be measured for payment, but cost will be considered incidental to Contract.
**WSSC**
| STANDARD SPECIFICATIONS |
| SECTION 01630 |
| SUBSTITUTION PROCEDURES |
| 1.1 DESCRIPTION |
| 1.2 SUBSTITUTION REQUIREMENTS |
| 1.3 SUBMITTAL OF DATA FOR PROPOSED SUBSTITUTIONS |
| 1.4 APPROVAL OF SUBSTITUTION |
| 4.1 Providing for and complying with requirements in this Section will not be measured for payment, but cost will be considered incidental to Contract. |
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