10180031_1426 E. 2OTH - Plan - Laserfiche WebLink

Home Browse Search

SolarMount Unirac Code-Compliant Installation Manual :FUNIRAC Table 3. pneoo (psf) Roof Overhang ENctive Bosic Wind Speed, V (mph) Wind Areo - zone (so 90 1 00 1 1/0 1 120 130 140 150 170 2 10 -21.0 -25.9 -31.4 -37.3 -43.8 -50.8 -58.3 -74.9 2 20 -20.6 -25.5 -30.8 -36.7 -43.0 -49.9 -57.3 -73.6 2 50 -20.1 -24.9 -30.1 -35.8 -42.0 -48.7 -55.9 -71.8 2 100 -19.8 -24.4 -29.5 -35.1 -41.2 -47.8 .-54.9 -70.5 3 10 -34.6 -42.7 -51.6 -61.5 -72.1 -83.7 -96.0 -123.4 3 20 -27.1 -33.5 -40.5 -48.3 -56.6 -65.7 -75.4 -96.8 3 50 -17.3 -21.4 -25.9 -30.8 -36.1 -41.9 -48.1 -61.8 3 100 -10.0 -12.2 -14.8 -17.6 -20.6 -23.9 -27.4 -35.2 2 10 -27.2 -33.5 -40.6 -48.3 -56.7 -65.7 -75.5 -96.9 2 20 -27.2 -33.5 -40.6 -48.3 -56.7 -65.7 -75.5 -96.9 2 50 -27.2 -33.5 -40.6 -48.3 -56.7 -65.7 -75.5 -96.9 2 100 -27.2 -33.5 -40.6 -48.3 -56.7 -65.7 .-75.5 -96.9 3 10 -45.7 -56.4 -68.3 -81.2 -95.3 -110.6 -126.9 -163.0 3 20 -41.2 -50.9 -61.6 -73.3 -86.0 -99.8 -114.5 -147.1 3 50 -35.3 -43.6 -52.8 -62.8 -73.7 -85.5 -98.1 -126.1 3 100 -30.9 -38.1 -46.1 -54.9 -64.4 -74.7 -85.8 -110.1 2 10 -24.7 -30.5 -36.9 -43.9 -51.5 -59.8 -68.6 -88.1 2 20 -24.0 -29.6 -35.8 -42.6 -50.0 -58.0 -66.5 -85.5 2 50 -23.0 -28.4 -34.3 -40.8 -47.9 -55.6 -63.8 -82.0 2 100 -22.2 -27.4 -33.2 -39.5 -46.4 -53.8 -61.7 -79.3 3 10 -24.7 -30.5 -36.9 -43.9 -51.5 -59.8 -68.6 -88.1 3 20 -24.0 -29.6 -35.8 -42.6 -50.0 -58.0 -66.5 -85.5 3 50 -23.0 -28.4 -34.3 -40.8 -47.9 -55.6 -63.8 -82.0 3 100 -22.2 -27.4 -33.2 -39.5 -46.4 -53.8 -61.7 -79.3 r ASCE/SE; 7-05, Minimum Design Loads for 8ui/dings and Other Structures, Chapter 6, p. 44. Step 5: Determine the Topographic Factor, K,t For the purposes of this code compliance document, the Topographic Factor, Kzt, is taken as equal to one (1), meaning, the installation is surrounded by level ground (less than 10% slope). If the installation is not surrounded by level ground, please consult ASCE 7-05, Section 6.5.7 and the local building authority to determine the Topographic Factor. Step 6: Determine Exposure Category (B, C D) Determine the Exposure Category by using the following definitions for Surface Roughness Categories. SURFACE ROUGHNESS C: has open terrain with seat- tered obstructions having heights generally less than 30 feet. This category includes flat open country, grasslands, and all water surfaces in hurricane prone regions. SURFACE ROUGHNESS D: has flat, unobstructed areas and water surfaces outside hurricane prone regions. This category includes smooth mud flats, salt flats, and unbroken ice. The ASCE/SEI 7-05 defines wind surface roughness categories as follows: SURFACE RoUGHNESS B: is urban and suburban areas, wooded areas, or other terrain with numerous closely spaced obstructions having the size of single family dwellings. Also see ASCE 7-05 pages 287-291 for further explanation and explanatory photographs, and confirm your selection with the local building authority. 0 Page 7