Question 1

Can you offer any further detail on what is meant by "flexible filler" as shown on standard detail W6 - Air Valve Assembly (25mm & 50mm valves)?

Accepted Answer

Standard drawing W6 section AA shows a 50 mm gap between the pipe and the precast concrete barrel, with a “flexible filler”. The cross reference spec 33 11 01 Waterworks cross references Section 33 44 01 Manholes and Catch-basins, but there is no specific MMCD standard for flexible joint fillers in the material specifications.

However, a brief Internet search turned up the following:

There are a number of video resources for pipe gasket installations for manholes and pipe joints. You might want to check out http://www.press-seal.com/videos/

Question 2

Is there an MMCD Unit Price contract template that can be used between General Contractors and Subcontractors?

Accepted Answer

QUESTION

Are MMCD contracts only for contracts between Owners and General Contractors? I'm hoping to find a Unit Price contract that can be used between General Contractors and Subcontractors.

COMMENT

There are no MMCD contract templates for subcontractors.

Question 3

Is 120mm concrete sidewalk thickness acceptable for passenger vehicle and service vehicle loading?

Accepted Answer

QUESTION

I'm looking for design guidance on the correct MMCD detail (minimum concrete thickness, strength, etc.) and/or other recommended documentation where a roll over curb provides vehicular access to a either a residential lot and/or a parking lot that will also receive delivery and service vehicles.

COMMENT

General guidance on sidewalk construction and maintenance is available on Federation of Canadian Municipalities website under INFRAGUIDE.

Question 4

What severity or range/size of a crack determines that the section of curb or sidewalk is to be replaced?

Accepted Answer

QUESTION

I'm writing to inquire about cracking that may occur in concrete curbs and sidewalks (MMCD section 03 30 20). Specifically a spec regarding the severity of a given crack. In section 03 30 20, 3.17.1 states that cracked gutters or sidewalks are to be replaced.

Does this mean any and all cracks that are found? For example a hair line crack is to be replaced? Or at what severity or range of the crack determines that the section of curb or sidewalk is to be replaced?

COMMENT

Here is a typical note for our Developers, Contractors, and Engineers in the deficiency list for a project.

“Complete all concrete repairs. Sidewalks and driveway letdowns shall be removed and replaced if any crack or defect is present. Curb and gutter sections with more than one crack shall be replaced from joint to joint, no half section repairs are permitted. For sections of curb and gutter with only one crack, crack injection filling is permitted by Tykon, Bondtech or Confill.

"Any separation that is wider than the thickness of a dime is considered as a crack. When there are 2 or more cracks between expansion joints, the section of curb shall be removed.”

Question 5

Are there specifications for brand and model for LED luminaires in the MMCD?

Accepted Answer

QUESTION

I am wondering if there are specifications for brand and model for LED luminaires in the specs.

COMMENT

We do not have LED fixture manufacturer/distributor related specifications in the MMCD. Public sector purchasers (i.e. cities/local governments etc.) in BC rely on the program developed by BC Hydro and BC MoTI called “LED Street Lights Across BC” for LED roadway lighting purchase specifications.

There’s a list of manufacturers/distributors that have been pre-qualified to sell products as part of this program.

If you are not a public sector purchaser, you can still acquire the pre-qualified products through the manufacturers/distributors listed in the link above.

For design purposes, roadway lighting designs shall meet the Transportation Association of Canada (TAC) guidelines (i.e. Guide for the design of Roadway Lighting – 2005), and Canadian Electrical Code (CEC) requirements, as well as local government guidelines/specifications.

The MMCD Design Guidelines are also a good reference for design purposes.

Question 6

Please inform how to read the fertilizer table correctly and outline what elements are required for a fertilizer to meet MMCD specifications?

Accepted Answer

QUESTION

Section 32 91 21 2.9.6 states that the fertilizer must include but is not limited to a number of elements. However, the weight percentages here do not equal 100%. Could you please inform me on how to read the table correctly and outline what elements are required for a fertilizer to meet MMCD specifications?

COMMENT

Specification 32 91 21 2.9.6 Table 1 says that where the specified chemicals are present in the fertilizer, they must meet or exceed the stipulated minimum percentage of the chemical in the fertilizer . The specification was derived from the BCLNA BC Landscape Standard 2008 (7th edition), copies of which are sometimes held by public libraries. This would probably be the most appropriate reference to seek information about other permissible constituents of appropriate fertilizers. Suppliers may also confirm which fertilizers meet MMCD specification 32 91 21

Question 7

What is the rate for liquidated damages?

Accepted Answer

QUESTION

I have a question about the interpretation of GC13.9 (no supplemental GC)

COMMENT

Liquidated damages are now set at $1000/day vis Platinum supplemental. GC 13.9 says the flat rate plus out of pocket costs.

Question 8

How does MMCD address issues relating to contaminated material discovered during construction?

Accepted Answer

QUESTION

How does MMCD address issues relating to contaminated material discovered during construction? Should it be cost to be borne by contractor or extra pay by owner?

COMMENT

GC12.2 to GC12.5 refer

Question 9

Which item is higher if there are contradicting statements between the Contract Documents, the Supplementary Specifications, the Schedule of Quantities and Prices, and the Drawings?

Accepted Answer

COMMENT

GC2.2(1) shows the hierarchy of documents

Question 10

Which MMCD contains information about sidewalk maintenance and restoration standards?

Accepted Answer

QUESTION

I need to get information on sidewalk maintenance and restoration standards and would like to purchase the MMCD applicable. I am not sure which of the options (Design Guideline Manual, Vol I User Guide, or Vol II User Guide) I should purchase.

COMMENT

A general treatment of sidewalk design construction and maintenance is covered in the free InfraGuide publication Sidewalk Design Construction and Maintenance at https://fcm.ca/en/resources/mamp/infraguide-national-guide-sustainable-municipal-infrastructure

MMCD has standard drawings for: