If Quikrete concrete mix yields .0075 cubic feet per pound (0.15 cubic feet per 20# ) each post will require 70# of Quikrete. However, if the inside diameter of the 8&quot; form is less than 8&quot; (which it probably is) a 60# bag should be enough for a post.
What Are SPDs. A surge protective device (SPD) is a protective device for limiting transient voltages by diverting or limiting surge current and is capable of repeating these functions as specified. SPDs were previously known as Transient Voltage Surge Suppressors (TVSS) or secondary surge arrestors (SSA). Secondary surge arrestor is a legacy term (often used by utilities) and is used most commonly for a device that has not been certified to ANSI/UL 1449. In 2009, after the adoption of ANSI/UL 1449 (3rd Edition), the term Transient Voltage Surge Suppressor was replaced by Surge Protective Device.
This is SPDY. A multi-plexed binary TLS-wrapped protocol from the future. SPDY (pronounced speedy) is a replacement for HTTP, and feels like a wrapper for it. SPDY is a packet (frame) oriented binary protocol, usually wrapped in TLS (SSL), and as such a little harder to follow than HTTP.he easiest way to see SPDY in action is with Google Chrome / Chromium. Browse to chrome://net-internals in one tab, and to https://www.google.com in another. Click SPDY in the sidebar, click a session, then click SPDY_SESSION (youâre in Events now).