IAS AC472
AS/NZS 5131 CC3
EN 1090 EXC3 · CE
Singapore
Solution · Typhoon & earthquake
Steel designed for typhoons and earthquakes
The Philippines faces both every year. We design every frame for NSCP 2015 wind and seismic Zone 4 – and show you exactly which one governed.
- Sec. 207
- NSCP wind design
- Sec. 208
- NSCP seismic design
- Zone 4
- Most of the archipelago
Two hazards, one frame
Steel is light, so earthquake forces stay low, and ductile, so it yields rather than snaps. But light also means wind uplift can govern the roof, purlins and anchors. A good Philippine design checks both, for your exact site, and details connections that keep their strength through repeated loading.
We choose between moment frames, braced frames and combinations based on your layout and the soil profile.
Applications
What we check
01
Basic wind speed
For your municipality and exposure.
02
Roof uplift
Purlins, fixings and anchor bolts.
03
Seismic zone & source
Including near-fault effects.
04
Soil profile
From your geotechnical report.
05
Ductile detailing
Connections that yield safely.
06
Drift limits
Protecting walls and finishes.
Codes & compliance
Designed for Philippine approval
The codes our engineers work to on Philippine projects – and the approvals your project team will obtain with our documents.
Philippines
- NSCP 2015 Vol. 1National Structural Code of the Philippines – loads, wind (Sec. 207), seismic (Sec. 208) and steel design
- AISC 360 / AISC 341Structural steel design and seismic provisions, as referenced by NSCP Chapter 5
- AISI S100Cold-formed steel members – purlins, girts and eave struts
- AWS D1.1Structural welding – procedures, welders and inspection
- ISO 12944Corrosion protection by paint systems, by corrosivity category C2–C5
- PD 1096 · RA 9514National Building Code and Fire Code of the Philippines (Revised IRR 2019)
- Engineer of record
- Plans and calculations signed and sealed by a Philippine-licensed civil or structural engineer for the building permit
- Fire safety
- Fire Safety Evaluation Clearance (FSEC) from the BFP before the permit; fire-resistance ratings per type of construction
Summary for orientation only – the project specification, the adopted code edition and the authority having jurisdiction govern.
Engineering
Bracing and connections
Braced bays are detailed so the brace yields before the connection, and moment connections follow prequalified details where ductility is required.
Engineering
Purlins in a typhoon
Most typhoon damage starts at the edge of the roof. We tighten purlin spacing and bracing at corners and edges, where suction peaks.
FAQ
Frequently asked questions
Is all of the Philippines in seismic Zone 4?
Almost all of it; only Palawan, Sulu and Tawi-Tawi are Zone 2 under NSCP 2015. We use the zone and fault distance for your site.
What wind speed do you use?
The basic wind speed in NSCP 2015 for your location, with exposure and topography factors.
Related content
ProductsC/Z purlins & girts
Reference projects
Ready to price your building?
Send the layout, the site location and your target date. We reply with a frame concept, steel tonnage and a CIF or DDP price.
Delivery terms · Incoterms® 2020
Delivered on the terms you need
World Steel quotes ex-factory, free on board or delivered to your port or site. Export packing, documents and shipment from Ho Chi Minh City are part of our service.
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