Somewhere in the Philippines right now, a building is being designed with column ties spaced 200mm apart right where the column meets the beam, a zone where NSCP 2015 Section 418.7.5.3 caps tie spacing at 150mm or less (often 100mm) — a detail invisible on a rendering, invisible to the owner, and the exact kind of shortcut that turns a moderate earthquake into a collapse. The document that prevents that is one most building owners never read.
That document is the National Structural Code of the Philippines (NSCP) 2015, 7th Edition — the legal backbone of structural engineering practice in the country, the single code that defines how buildings must be designed to carry loads, resist earthquakes and typhoons, and protect the people inside them.
This guide is the central hub for AEDO's NSCP 2015 resource library: an overview of every major section, links to our deep-dive guides and free tools, and a reference table you can use on-site or in the design office.
A section-by-section overview of NSCP 2015, links to full guides for the sections engineers use most, worked examples, and real-world context from recent Philippine structural failures. No paywall. No signup.
NSCP meaning: "National Structural Code of the Philippines." NSCP 2015 is Volume I, 7th Edition of that code, published by the Association of Structural Engineers of the Philippines, Inc. (ASEP). It is applied as a referral code of the National Building Code of the Philippines (PD 1096), which is why Building Officials check structural plans against it before a permit is issued. If you need those plans prepared, see our structural design service; for a building that already exists, a structural assessment checks it against the same code.
The code covers everything from how to compute the weight of a slab to how a reinforced concrete column must be detailed to survive strong shaking. Its concrete chapter follows the structure of ACI 318-14 (Section 418 on earthquake-resistant structures mirrors ACI Chapter 18), its earthquake section keeps the static force procedure with seismic coefficients Ca and Cv, and its wind section was, in the code's own words, "significantly revised from NSCP 2001 and NSCP 2010" (commentary to Section 207.1).
| Edition | Status (September 2026) |
|---|---|
| NSCP 2001 | Superseded |
| NSCP 2010 | Superseded |
| NSCP 2015, Volume I, 7th Edition | The edition in use for building design and permits |
| 8th Edition | Referred to in technical papers as a proposal; we have not found it published by ASEP or adopted for permits |
Before starting a new design, confirm the edition with ASEP or your local Building Official. If a newer edition is adopted, AEDO will update this guide and its calculators.
There is no official free PDF of NSCP 2015. The code is sold by its publisher, ASEP. Scanned copies on document-sharing sites are unofficial uploads: pages go missing, errata are not included, and a sealed design should never rest on one. For day-to-day lookups, AEDO's free guides below explain the sections engineers use most, with the tables and formulas worked through.
In practice, the code applies to everyone involved in building design and construction in the Philippines:
If you're the owner, you don't need to read the whole of NSCP 2015 yourself — that's what a licensed engineer's signature and seal is for. What you do need to know is that "NSCP-compliant" isn't marketing language on a proposal; it's a specific, checkable legal standard, and any engineer or contractor who can't point to which sections their design satisfies isn't actually giving you that standard.
Need your project's structural design checked against NSCP 2015? A licensed AEDO engineer can review or produce your full structural analysis — loads, seismic, wind, and permit-ready drawings.
Volume I is organized with the design loads in Chapter 2, then one chapter per material:
| Section / Chapter | Topic | Most-Used By |
|---|---|---|
| 203 | Combinations of loads (strength design and allowable stress design) | Engineers |
| 204 | Dead loads — unit weights of materials | Engineers, estimators |
| 205 | Live loads — Table 205-1 floor loads by occupancy | Engineers, architects |
| 206 | Other minimum loads — impact, elevators and machinery, wall anchorage, interior walls, retaining walls, water accumulation | Engineers |
| 207 | Wind loads — basic wind speed maps, velocity pressure | Engineers, architects |
| 208 | Earthquake loads — seismic zones, base shear | Engineers |
| 209 | Soil lateral loads — retaining and basement walls | Geotechnical and structural engineers |
| 210 | Rain loads | Engineers |
| 211 | Flood loads | Engineers |
| Chapter 3 | Earthworks and foundations | Geotechnical and structural engineers |
| Chapter 4 | Structural concrete | Engineers |
| Chapter 5 | Structural steel | Engineers |
| Chapter 6 | Wood | Engineers |
| Chapter 7 | Masonry — including CHB walls | Engineers |
AEDO's free NSCP guides cover the four sections that Philippine engineers use on almost every project. Each guide includes the complete tables, the formulas, and at least one worked example:
NSCP 2015 allows two design approaches: strength design / load and resistance factor design (Section 203.3) and allowable stress / allowable strength design (Section 203.4). Section 208.4.1 is plain about it: use the Section 203.3 combinations with strength design and the Section 203.4 combinations with allowable stress design. Here are the basic strength design combinations, with fluid (F), self-straining (T) and soil (H) loads shown where the code includes them:
| Eq. | Strength design combination (Sec. 203.3.1) |
|---|---|
| 203-1 | 1.4(D + F) |
| 203-2 | 1.2(D + F + T) + 1.6(L + H) + 0.5(Lr or R) |
| 203-3 | 1.2D + 1.6(Lr or R) + (f1L or 0.5W) |
| 203-4 | 1.2D + 1.0W + f1L + 0.5(Lr or R) |
| 203-5 | 1.2D + 1.0E + f1L |
| 203-6 | 0.9D + 1.0W + 1.6H |
| 203-7 | 0.9D + 1.0E + 1.6H |
f1 = 1.0 for floors in places of public assembly, for live loads over 4.8 kPa, and for garage live load; 0.5 for other live loads. Wind carries a factor of 1.0, not 1.6, because the NSCP 2015 wind speed maps are already strength-level. For allowable stress design the wind and earthquake terms become 0.6W and E/1.4 (for example Eq. 203-12: D + H + F + (0.6W or E/1.4), and Eq. 203-15: 0.6D + E/1.4 + H).
Enter the service-level load effects on one member (kN, kN·m or kPa, just keep the units the same). Wind and earthquake are each checked in both directions (±W, ±E), so a wind uplift or load reversal shows up as the governing minimum. The tool runs Equations 203-1 to 203-7 and shows which one governs.
Of all the load types in NSCP 2015, two are responsible for the vast majority of structural failures and deaths in the Philippines:
The Philippines sits on three tectonic plates and has over 100 active faults. The NSCP 2015 seismic provisions — zone factors, soil amplification, ductility requirements — exist because buildings without proper seismic detailing pancake-collapse under moderate shaking. The Angeles City collapse and building failures during the 2026 Mindanao M7.8 earthquake are recent proof. The West Valley Fault "Big One" has not yet moved.
The Philippines is the most typhoon-hit country on Earth by landfall count. NSCP 2015 Section 207 sets wind pressures from basic wind speed maps chosen by occupancy category, then adjusts for exposure (urban vs. open terrain), topography and height. Roof systems designed without proper NSCP 207 wind uplift analysis are the primary cause of post-typhoon roof losses every year. See our typhoon readiness guide for the practical checklist.
A residential building is being designed in Metro Manila. Which NSCP 2015 seismic zone factor applies?
When AEDO's engineers design a building in the Philippines, here is the sequence they follow — the same sequence NSCP 2015 is organized around:
Step 8 — ductility detailing — is where buildings die or survive. A building can be correctly sized for gravity loads and still have columns that shatter in an earthquake because ties are spaced at 200mm in the end zones of a special moment frame column, where Section 418.7.5.3 limits spacing to the smallest of one-fourth the column's least dimension, six bar diameters, and so (100mm to 150mm). Correct design forces (Steps 1–7) are necessary. Correct detailing (Step 8) is what saves lives.
For engineers and architects who want deeper coverage of the design process beyond the load chapters:
NSCP 2015 exists because the Philippines sits on three tectonic plates and takes the most typhoon landfalls on Earth. Every section — loads, seismic, wind, detailing — is written from real structural failures, not theory.
A building sized correctly on paper and detailed carelessly on site fails the same way an un-designed one does. Both halves matter.
If you need assistance with structural analysis or design for your project, AEDO Construction is ready to help.
NSCP 2015 (National Structural Code of the Philippines, Volume I, 7th Edition) is the structural design standard used in the Philippines, published by the Association of Structural Engineers of the Philippines (ASEP) and applied as a referral code of PD 1096 (the National Building Code). Building Officials check structural plans, signed and sealed by a licensed civil engineer, against it before issuing a building permit.
For a standard Philippine residential building, the most-used sections are: Section 204 (dead loads — slab weight, wall weights), Section 205 (live loads — floor occupancy), Section 207 (wind loads — especially roof systems in typhoon zones), Section 208 (earthquake — base shear for column and footing design), and Section 418 (earthquake-resistant detailing of beams, columns and joints). The load combinations in Section 203 tie them all together.
NSCP 2015 Section 208.4.4.1 states that the Philippine archipelago is divided into two seismic zones only. Zone 2 (Z = 0.20, Table 208-3) covers the provinces of Palawan (except Busuanga), Sulu and Tawi-Tawi. The rest of the country, including Metro Manila, Luzon, the Visayas and the rest of Mindanao, is Zone 4 (Z = 0.40). Zone 4 also carries an extra minimum base shear, 0.8ZNvIW/R (Eq. 208-11).
NSCP 2015 does not use the older UBC-style p = Ce × Cq × qs × Iw formula that many older references still quote. Section 207B.3.2 computes velocity pressure as qz = 0.613 Kz Kzt Kd V² (N/m², V in m/s), where Kz is the exposure coefficient, Kzt the topographic factor and Kd the directionality factor. The basic wind speed V comes from Figure 207A.5-1A, 1B or 1C depending on occupancy category (Section 207A.5.1). These maps are strength-level, so wind uses a load factor of 1.0 in the Section 203 combinations instead of a separate importance factor. Our wind load guide has the full step-by-step with tables.
NSCP 2015 Section 205, Table 205-1 lists minimum uniformly distributed live loads by occupancy. Key values: residential basic floor area — 1.9 kPa; other offices — 2.4 kPa (call centers 2.9 kPa); retail stores — 4.8 kPa (wholesale 6.0 kPa); assembly with movable seats — 4.8 kPa (fixed seats 2.9 kPa); storage — 6.0 kPa light, 12.0 kPa heavy. Our dead and live load guide reproduces the full table with explanations and a worked example for a residential beam.
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Statutes, codes, official tools and references used or referred to in this article, linked to their source. Links open in a new tab.
Prices, cost bands and rate figures in this article are AEDO Construction's own market and practice figures for Philippine work unless a source is named beside them. Code and statute references above link to the primary text.
