# Design Computation for National Building Code of the Philippines

September 23, 2017 | Author: Enrico Paolo Topacio | Category: Pedestrian Infrastructure, Civil Engineering, Real Estate, Engineering, Building

#### Short Description

Sample Computations for NBC from Arch. Barren Paul del Rosario, UAP...

#### Description

A PROPOSED INDUSTRIAL PROCESSING PLANT An export company has decided that its I-2 zoned property, with a Total Lot Area (TLA) of 3,600 square meters and located in an EPZA shall build an industrial processing plant. The project site is a corner lot with a 60-meter wide frontage facing west. The project site uniformly slopes at 2% towards the 30 meters wide street that is relatively flat and which has 5 meters wide sidewalk (which includes 2 meters wide planting strip) at both sides. To the north of the project site (as viewed from the main RROW) is a 16 meter wide RROW that is also sloping towards the main RROW at 2% which has 2.4m wide sidewalk (with 0.5m wide planting strip) at both sides. To the west side of the lot and across the east and north side of the project site are also low-rise industrial facilities as prescribed in the deed restrictions of up to five (5) storeys only. 1. What is the allowable maximum building footprint (AMBF) for the project? 2. What is the allowable maximum building footprint (AMBF) for the project, if the building shall not have a firewall? 3. What is the applicable percentage of site occupancy (PSO) for the project site? 4. What is the maximum impervious surface area (ISA) for the project? The answer should be in square meters. 5. What is the applicable unpaved surface area (USA) for the project? The answer should be in square meters. 6. For the project site, how much is the combined total maximum allowable ISA plus the minimum USA (in square meters)? 7. What is the maximum gross floor area (GFA) for the project, if the building shall not have a firewall? 8. Based on the NBCP and the allowable percentage of site occupancy (PSO), what shall be the total gross floor area (TGFA) for the project, if the building shall not have a firewall? 9. Based on the maximum gross floor area (GFA), what shall be the total gross floor area (TGFA) for the project? 10. Based on the allowable building height limit and the allowable maximum building footprint, what shall be the allowable maximum volume of building (AMVB) for the project, if the building shall not have a firewall?

18M RROW 5M

50M 30M RROW

60M

60M 8M

1.

47M

5M 5M

What is the allowable maximum building footprint (AMBF) for the project? 52 X 55 MTS. = 2,860 SQ.MTS.

2.

What is the allowable maximum building footprint (AMBF) for the project, if the building shall not

have a firewall? 47 X 50 MTS. = 2,350 SQ.MTS. 3.

What is the applicable percentage of site occupancy (PSO) for the project site? 3,600 SQ.MTS / 2,860 SQ.MTS = 0.7944 say 79.44% or 80%

4.

What is the maximum impervious surface area (ISA) for the project? The answer should be in

square meters. 5% of 3,600 = 180 SQ.MTS. 5.

What is the applicable unpaved surface area (USA) for the project? The answer should be in

square meters. 100 – 79.44 (PSO) = 20.56% 20.56 – 5 (ISA) = 15.56% 15.56% of 3,600 = 560.16 SQ.MTS. 6.

For the project site, how much is the combined total maximum allowable ISA plus the minimum

USA (in square meters)? ISA + USA = TOSL TOSL = TLA – AMBF 3,600 – 2,860 = 740 SQ.MTS. 7.

What is the maximum gross floor area (GFA) for the project, if the building shall not have a

firewall? GFA = TLA X FLARmax 3,600 x 3 = 10,800 SQ.MTS.

8.

Based on the NBCP and the allowable percentage of site occupancy (PSO), what shall be the total

gross floor area (TGFA) for the project, if the building shall not have a firewall? TGFA = BHL X AMBF (no firewall) 5 floors x 2,350 = 11,750 SQ.MTS. 9.

Based on the maximum gross floor area (GFA), what shall be the total gross floor area (TGFA) for

the project? TGFA = GFA X 1.5 (no firewall) = 16,200 SQ.MTS. 10.

Based on the allowable building height limit and the allowable maximum building footprint, what

shall be the allowable maximum volume of building (AMVB) for the project, if the building shall not have a firewall? AMVB = BHL X AMBF (no firewall) = 15 MTS. X 2,350 SQ.MTS. = 35,250 SQ. MTS.

93M