Explore the Engineering Database more efficiently by signing up for free. Sign up free

R-697 — Cotton

Name: Insulation R Values — cotton: record id 697 · rsi per inch 0.100914 m2K/W/in · r value per inch 0.573015 ft2hF/BTU/in · k w mk 0.2517 W/mK · mean temp 71.03 F
Creator: Engineering Database

Material Id: Cotton
Record Id: 697
Date: 9/9/1949
Delta T (F): 24.31
Delta X (in): 0.6393
Density (lb/ft3): 0.98
Description: Roll 41012B, Sample # 1B, Backing
Form: Blanket
K W Mk (W/mK): 0.2517
Material: Cotton
Mean Temp (F): 71.03
R Value per Inch (ft2hF/BTU/in): 0.573015
Rsi per Inch (m2K/W/in): 0.100914
Standard: Nist Srd 81 API
Test Method: ASTM C 177

Source: NIST SRD 81 API

Browse more civil engineering reference tables →