Design of Wind Force on Appurtenances

Design Wind Force on Appurtenances FA = qzGh (EPA)A

(TIA-EIA-222-G, 2.6.9.2)

where: qz = velocity pressure at the centerline height of the appurtenances Gh = gust effect factor (EPA)A = effective projected area of the appurtenances

qz = 47.3x10-6KzKztKdV2Iw (kPa) Kz = 2.01 (z/zg)

(NSCP, 2010- 6TH EDITION, EQUATION 207-15)

2/α

(TIA-EIA-222-G, 2.6.5.2)

(EPA)A = Ka[(EPA)Ncos2(θ) + (EPA)Tsin2(θ)] Province Classification of Structure Exposure Zone zg α Ka

(NSCP, 2010-6TH EDITION, TABLE 207-1)

NCR III C 2 274 10 1.0

Kzmin

=

0.85

(TIA-EIA-222-G, TABLE 2-4)

Kzt

=

1.00

(TIA-EIA-222-G, 2.6.6.4)

Kd

= = =

0.95 200 1.15

(TIA-EIA-222-G, TABLE 2-2)

Velocity (kph) Iw Gh Building Height

= =

1.00 15.00

Appurtenances Panel Panel Panel Panel Panel Panel

(TIA-EIA-222-G, 2.6.9.2)

of = = = = =

Antenna Antenna Antenna Antenna Antenna Antenna

(2G) (2G) (2G) (3G) (3G) (3G)

Weight kg

kN

13.000 13.000 13.000 23.000 23.000 23.000

0.128 0.128 0.128 0.226 0.226 0.226

Prepared by: FREDERICK L. CRUZ, M.ASCE, M.PICE, M.ASEP

(TIA-EIA-222-G, TABLE 2-1) (NSCP, 2010-6TH EDITION, 207.5.6.3 EXPOSURE CATEGORIES)

CA (TIA-EIA-222G Table 2-8) Aspect Ratio = 7 ≤ 2.5 ≥ 25 7.0 25.0 2.5

(NSCP, 2010-6TH EDITION, TABLE 207-1) (TIA-EIA-222-G, TABLE 2-4) (TIA-EIA-222-G, TABLE 2-4) (TIA-EIA-222-G, 2.6.9.2)

Ca

Ca

Ca

1.2

1.4

2.0

(NSCP, 2010-6TH EDITION, TABLE 207-1) (TIA-EIA-222-G, TABLE 2-3) (TIA-EIA-222G 2.6.9)

m

z (m)

Kz

qz (kPa)

29.000 29.000 29.000 29.000 29.000 29.000

1.253 1.253 1.253 1.253 1.253 1.253

2.589 2.589 2.589 2.589 2.589 2.589

Dimension Height (m)

Width (m)

Depth (m)

1.360 1.360 1.360 2.580 2.580 2.580

0.160 0.160 0.160 0.268 0.268 0.268

0.080 0.080 0.080 0.138 0.138 0.138

θ

(EPA)N (m2)

(EPA)T (m2)

(EPA)A (m2)

Aspect Ratio

Ca

F (kN)

0 120 330 0 120 330

0.218 0.218 0.218 0.691 0.691 0.691

0.109 0.109 0.109 0.356 0.356 0.356

0.218 0.136 0.190 0.691 0.440 0.608

8.500 8.500 8.500 9.627 9.627 9.627

1.450 1.450 1.450 1.488 1.488 1.488

0.817 0.511 0.715 2.663 1.694 2.340