Structural Loads For Multiwall Polycarbonate

Structural Loads For Multiwall Polycarbonate are stresses to structure from external or internal forces.

• Dead loads are gravity loads constant in structure life, such as hanging fans, heaters, etc
• Live loads are temporary, such as snow loads and wind loads.
• Snow loads vary considerably location. Ask your local bldg. dept. for total wind and snow load in your area.
( 12 inches of light, fluffy snow or 2 to 4 inches of heavy, wet snow = about 5 lbs per sq. ft.)
• Wind loads come from any direction, usually hit side walls perpendicular, most stress at edges.

Figures are in lbs. per sq. ft. Also Also See Lexan Tech Data for more load charts.

Wind Speed
85
mph
90
mph
100
mph
120
mph
130
mph
140
mph
150
mph
160
mph
18
20
25
36
43
48
56
85

Wind speeds up to 90 mph: Screws with 3/4″ sealing washers set at corners of glazed areas and every 1 ft. on-center. Base & Cap System: Screws provided with system to attach Base to frame and Cap to Base. The Base, Cap and Corner receive screws at ends of each Trim piece and every 1 ft. on center. In winds of 110 mph and over decrease distance between screws to every 10″. In winds of 125 mph and over increase screws to every 8 inches. In winds of 135 to 150 mph increase screws to every 6 inches. In winds over 110 mph consult with engineer to receive a stamp and bldg. dept. approval. For placement of screws in body sheet see Polycarb. Position & Attach.

For extreme high wind areas Email, prior to placing order, indicate max. wind speed.

• Combination loads are common. For example, a snowstorm may include high winds.

• Blocking, Purlin or Girt placement for wind and combination loads: Consult bldg. dept. for combine wind and snow load.

Important Hurricane Zone Notes: Above wind load figures and fastening recommendations are a general guideline. are also a general guideline. At design time it is the customers responsibility to receive an engineers stamp and approval from your local bldg. dept.

See 8-25mm Polycarb, some 20 yr Warranty

Polycarbonate Greenhouse and Sunroom Building Supplies