Question 1

Where in the MMCD would I find a detailed suggested curb finishing drawing profile?

Accepted Answer

QUESTION

I am looking to confirm that a detailed suggested curb finishing drawing profile exists as part of your package, and which package would contain this.

COMMENT

Standard Detail Drawings C1, C2, C3, C4 and C5 in Volume II.

Question 2

Does the chart on Dwg S1 apply to all scenarios regarding Manhole Diameters?

Accepted Answer

QUESTION

The chart on dwg. S1 for manhole diameters, was that assuming straight through lines or does it cover all cases e.g. manholes with multiple inlets?

COMMENT

The S1 table is a guide for one inlet pipe and one outlet pipe at a similar elevation. The Shaw Precast guide below is a good guide but I would still suggest the designer to rely on basic engineering principal when sizing manhole because there are situations you need to choose a smaller manhole when the inlet pipe is higher than the outlet pipe, or choose a bigger a manhole when there are multiple smaller pipes coming in at similar elevations.

Question 3

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 4

What is the correct Manhole Ladder Dimension?

Accepted Answer

QUESTION

What is the correct ladder dimension?

Std Dwg S1 states first rung in manhole to be no more than 650mm from finished top of manhole frame (150mm rung to barrel, risers max 500mm).

WorkSafeBC G13.2(1)(b) Ladders in manholes - "The maximum distance down from the entry level (rim of the manhole cover) to the centerline of the first rung below entry level in any manhole should be 500 mm (20 inches) where no handhold is provided above the first rung. Where a handhold is provided between the entry level and the first rung, the maximum distance may be increased to not more than 660 mm (26 inches)."

COMMENT

Review Std Dwg S1 with respect to conformance to WorkSafeBC.

Question 5

What is the most recent MMCD Document available?

Accepted Answer

The most recent edition of documentation is the MMCD 2019 Edition, released in 2020. Volume 1 contains the User Guide and Volume II contains the standard specifications and detail drawings.

The 2019 Edition marks the first ever server edition of the MMCD. Learn more here!