DESIGNO R I E N T A T I O N

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PS 07

PLAYSURF EVOLUTION

DESIGNERS

Design orientation maps is a set of twenty-oneposters designed and produced by thestudents of DAI 300, Design Process, a classtaught by Pino Trogu at San Francisco StateUniversity, Department of Design & Industry,Fall 2007.

Each poster examines a speci�c object in thecontext of everyday human activities. Eachtopic tries to identify an invisible “thread”connecting objects together. Whether incomplex technological artifacts or in simpleeveryday tools, this thread can be found toconnect all the members of a particular family.The analysis of these threads is helpful inshowing how things are “put together” and howthey work, by analyzing their origins andtransformations through time. This poster,Design Orientation Map – 07 was designed byJoe Rillera,Joe Snyder and Tara Phettaphong .

Designed at San Francisco State University Printed in the U.S.A. Copyright © 2007 SFSU DAI 300

Cleaning > razorCommunication > newsDepicting > cameraDrawing > electronic input devicesDrinking > Outdoor water containerEating / toolsPlay > boardsSleeping > alarm clockTransportation of goods > Carrying groceriesTransportation of self > bicycleWalking > shoesMoney > walletCooking > utensilsAnalog/digital > telephoneProperty > keysMaking music > pianoPersonal shelter > helmetReading > newspaperTeaching > slanted DesksWaiting > foldable furnitureWriting > pencil

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Jon Rillera, Joe Snyder, Tara Phettaphong

ONE ORMULTIPLEPHOTOS IN THISAREA

SURFBOARD EVOLUTION

6ft

7ft

As we all know, we cannot stand on the surface of water, and yet surfers do just that every time they enter the water. This phenomenon is just a basic application of Archimedes' Principle.When a solid body is partially or completely immersed in water, the apparent loss in weight will be equal to the weight of the displaced liquid.

A surfer standing on a board floating on the surface of the water doesn't sink as he does when he is standing on his feet

8ft

9ft

Surfboarding has a long history that dates back to the Polynesians in 2000 B.C. In 400 A.D., The Polynesians took the sport to Hawaii, where surfing became deeply ingrained in the rituals and spiritual lives of the people.

For a while, surfing was largely unknown in the western hemisphere until the arrival of Captain Cook in the 19th century. From there, many people tinkered with the form of the surfboard. The original Hawaiian surfboard was actually quite heavy and was 14 to 16 feet long.

HISTORY

16ft

SURFBOARD ANATOMY

AncientAla iaWi l l iw i l l i6-9f t

AncientOloKoa Wood12-16ft

1920-1930sTom Blake “Cigar”Red Wood10ft .

1930’a Waik ik i Sty leRedWood10ft

1950Quigg “Hot Cur l”F in less Balsa11ft . ,6 in.

1957-1958Velzy-Jacobs“Pig”10ft . ,6 in

1966Greg Nol l“Da Cat”9f t . , 2 in.

1967Mc Tavish“Deep V”7ft . 11in.

Originally, we chose boardsfor the category of play. Eventually we decided onsurfboards, as they had the deepest, richest, and oldesthistory involving boards. Generally speaking, surfing can be defined as riding a wave using a boardwith a lower density thanthe water beneath it.

When a wave comes in from sea and reaches a quick declinein sea level, the water is forcedupward. It begins to curveas the water is funneled inward, and over, calledbreaking. Surfboards are designed with aerodynamics which allow a surfer tobalance on this breakingwave

Many people tried different types of wood and adding several new features to the surfboard, but it would not be until the invention of fiberglass that the surfboard took on its familiar shape today.

Surfing gained popularity in the 1950’s and this spurred on new designs and materials. Even now, surfing is still a popular and thriving sport with people of all ages.

Surfing In Hawaii

The First Hawaiians surfing

INTRODUCTION

Ancient Hawaiian Art Depiciting Surfing

Nose

Stringer Deck

Tail

Tri-Fin Board

Fin

PHYSICS SURFBOARDCREDIT

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aiipictures.com

SURFBOARD TAIL TYPES

The Squashtail is the most common tail shape. The design offers a stable ride but enables the surfboard to still remain loose.

The Pintail comes to much more of a point than the Rounded tail and finishes in a sharper, thinner pin. This shape is ideal for large powerful, hollow waves.

The Swallowtail is a great board for the novice! The wider tail gives better paddling power and increased drive in smaller waves.

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As he stands on a board the force of his weight is distributed over a greater area decreasing the over all pressure he creates on the water allowing him to float.

Since the surfer and the board are floating, we know that the sum of the forces on the board is zero.

*F=maximum buoyancy force*w=weight of surfboard*Ws=weight of surfer

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Sunset Surfer

Squashtail

Pintail

Swallowtail

Rail

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