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Mean Roof Height, h Horizontal Dimension Parallel to Wind Direction, L from above the ground to the bottom of the roof Gcpi 3.5 Internal Pressure Coefficient, See Section 207 A.11 and Table 207 A.11-1 If Yes, See Section 207 A.8 and Table 207 A.8-1 of NSCP 2015 and compute for it first and write the value here -> Enclosed Buildingģ.4 Enclosure Classification, See Section 207A.10 H is greater than or equal to 4.5 m for Exposure C and D and 18 m for Exposure B 207A.8-1 in the upper one-half of a hill or ridge or near the crest of an escarpment? The structure is located as shown in Fig. The hill, ridge, or escarpment protrudes above the height of any upwind terrain features within a 3.2 km radius in any quadrant by a factor of two or more? The distance shall be measured horizontally from the point at which the height H of he hill, ridge or escarpment is determined. The hill, ridge, or escarpment is isolated and unobstructed upwind by other similar topograpic features of comparable height for 100 times the height of the topographics feature (100H) or 3.2 km, whichever is less.
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Wind Speed-Up Effect Consideration Is the location of the structure to be built satisfies the conditions as per Section 207A.8.1 stated below? See Section 207 A.6 and Table 207 A.6-1 Cģ.2 Exposure Category See Section 207A.7.2 & 207A.7.3 3.3 Topograhic Factor, Occupancy Category Check Occupancy Category Table 103-1 Iīasic Wind Speed Determine basic wind speed, V, for the applicable risk category, see Fig. > INPUT DATA ->DON'T TOUCH, AUTOMATIC DATA INPUT STEP 7 Compute for Design Wind Pressure ,p,for Low-Rise Building NOTE: See Commentary Figure C207 C.4.1 for guidance on hip roofs. STEP 3 Determine Wind Load Parameters: 3.1 Wind Directionality Factor, Kd, see Section 207 A.6 and Table 207 A.6-1 3.2 Exposure Category B,C or D, see Section 207 A.7 3.3 Topograhic Factor, Kzt, see Section 207 A.8 and Table 207 A.8-1 3.4 Enclosure Classification, see Section 207 A.10 3.5 Internal Pressure Coefficient, GCpi, see Section 207 A.11 and Table 207 A.11-1 STEP 4 Determine Velocity Pressure Exposure Coefficients, Kz (or Kh), see Table 207 C.3-1 STEP 5 Determine Velocity Pressure, Qz (or Qh), see Equation 207 C.3-1 STEP 6 Determine External Pressure Coefficients, Qcpf, using Figure 207 C.4-1 for flat and gable roofs NOTE: See Commentary Figure C207 C.4.1 for guidance on hip roofs. 1 2015 Edition LIMITATIONS This program is BASED only on SECTION 207C of NSCP 2015 which discusses about Envelope Procedure for Enclosed and Partially Enclosed Low-Rise Buildings and is ALSO APPLICABLE to MAIN WIND FORCE RESISTING SYSTEM (MWFRS) of ENCLOSE SIMPLE DIAPHRAGM BUILDING LESS THAN 18 m in HEIGHT (PART 1) STEPS TO DETERMINE WIND LOADS ON MWFRS ON LOW RISE BUILDINGS STEP 1 Check occupancy category as per Table 103-1 STEP 2 Determine basic wind speed, V, for the applicable risk category, see Fig.
BASIC WIND SPEED MAP PHILIPPINES NSCP 2015 CODE
WIND LOAD ANALYSIS REFERENCE CODE National Structural Code of the Philippines, Vol.