| 205 West Touhy Avenue, Park Ridge, Illinois 60068, (312) 823-6747.
|
| Asphalt occurring in nature which has been derived from petroleum by natural processes of evaporation of volatile fractions leaving the asphalt fractions; the native asphalt of most importance are found in the Trinidad and Bermudez Lake deposits; asphalt from these sources is called Lake Asphalt.
|
| A tile made by either the dust-pressed method or the plastic method, from clays that produce a dense body having a distinctive, slightly textured appearance.
|
| slate which has been split into thinner pieces along its natural cleft or seam; it is rougher in appearance than machined slate.
|
| A natural V-shaped channel, space, opening, or fissure in a material.
|
| Fluid motion of air caused by the temperature difference between the solid surface and the fluid with which it is in contact.
|
| A natural stream of air up a chimney, caused by the stack effect, which draws combustion air through the burner or fuel bed.
|
| A transparent finish, usually a drying oil, sealer or varnish, applied to wood for protection against soiling or weathering; such a finish should not seriously change the original color of the wood or obscure its grain pattern.
|
| The constant frequency of a vibrating system in the state of natural oscillation.
|
| A mechanical measuring and recording device of the volume of natural gas passing a given point.
|
| Unbleached and undyed yarn spun from a blend of black, brown or gray wools.
|
| Essentially the result of exudation of trees; divided into two large classes, dammars and copals; resins are usually named after the locality in which they are found or the port of shipment.
|
| Any type of stone which is quarried and not manufactured.
|
| A term applied to the oils, resins, tars, and pitches derived from oleoresin contained in, exuded by, or extracted from trees, chiefly species of pines; historically, these were important items in the stores of wood sailing vessels.
|
| The main part of the interior of a church.
|
| National Building Granite Quarries Association.
|
| National Builders Hardware Association.
|
| A membrane typically reinforced with polyester; resists tears, punctures and weathering; remains flexible at low temperatures and has a low vapor permeability.
|
| National Bureau of Standards.
|
| National Council of Architectural Registration Boards.
|
| National Center for Earthquake Engineering Research.
|
| National Concrete Masonry Association.
|
| National Conference of States on Building Codes and Standards, Inc.
|
| A fluid mixture of hydraulic cement and water, with or without admixture; also the hardened equivalent of such mixture.
|
| Portland cement and water only, no aggregate.
|
| A mixture of hydraulic cement and water, both before and after setting and hardening.
|
| Hydraulic cement in the unhydrated state.
|
| 1. With no dilution and nothing added. 2. Plaster material requiring the addition of aggregate.
|
| National Electric Code.
|
| A steel or wood beam threaded through a hole in a bearing wall and used to support the wall and its superimposed loads during underpinning of its foundation.
|