investigation and structural analysis

CERTIFICATION

In connection with the Project: Construction of 2-Storey 4-Classroom School Building, located at Brgy. Tabawan, Calbayog City with approved plan and specification of columns designated as C1, C2, and C3 having sections of 350x350mm.

In the course of implementation, said columns had been implemented with deficiency in its cross sectional area as reflected in the table below.

ColumnRequired Area (350x350mm)Actual ImplementationDeficiency in Area

C1122,500 mm2310x310mm = 96,100 mm226,400 mm2

C2122,500 mm2320x310mm = 99,200 mm223,300 mm2

C3122,500 mm2320x330mm = 105,600 mm216,900 mm2

After thorough investigation of the load bearing capacity in relation to the actual implementation of the columns, the results are as follows:

ColumnActual DimensionUltimate Load CapacityUltimate Load AppliedRemarks

C1310x310mm119.30 KN43.04 KNSafe and Stable

C2320x310mm1,596 KN254.70 KNSafe and Stable

C3320x330mm1,288 KN303.42 KNSafe and Stable

In conclusion therefore, this is to certify that columns C1, C2, and C3 with sections 310x310mm, 320x310mm, and 320x330mm respectively are SAFE, STABLE, and ADEQUATE for its ultimate load applied.

Prepared by:

ENGR. TOM G. ALERMechanical/Civil EngineerPTR. 0374063 Jan. 07, 2013Civil Lic. No. : 71444Mechanical Lic. No. : 41929