CSI divisions - past and present

Here's a handy chart that lists the comparison of CSI numbers from the old format to the new format...

The Handy Chart

Some "rules of thumb"

Some miscellaneous items condensed nicely into an incomplete little list...

http://www.mclarneyconstruction.com/ChartTable/ArchRulesofThumb.pdf

Cool bike racks

Bike racks don't need to be boring. Check these out:

DERO bike racks

This one is for hanging on walls of parking garages under multifamily housing units:

Wall Rack

Concrete terminology - heavy and hard...

What's the difference between hydraulic cement underlayment and gypsum cement underlayment? Not much, based on this terminology database:

Concrete terms

Two separate spec sections for hydraulic vs gypcrete, and not much of a difference, it seems. The way hydraulic cement is defined, it seems that it means "just add water"...wha?