Friday, January 21, 2011

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?