How , Why , What.

How determine how many solar energy I need ?

Calculate how many electric energy need use in per day . What components of the system will need the electricity away before it actually reaches the load.

The average sun hours per day can provide how many solar energy ?

Light bulb     60 watt

Exhaust Fan    ? watt 

Wheel & Wheel Lock

Wheels

 http://www.rubicon-trail.com/G-Class/wheels/img/wheels.jpg

Wheels be added to increase the movement of portable toilet that easily moving from place to place .

Wheel Lock

http://i01.i.aliimg.com/photo/v0/1903382137/three_legs_parking_locker_parking_locker_portable.jpg_220x220.jpg

Wheel lock  to holder the wheel .

Sketches

Sketches

Here part of the sketches that try to redesign the portable toilet .

Adjustable Leg

Adjustable Leg

http://www.allproducts.com/handtools/maghin-1/08-adjustable_leg.html

http://www.backyard-design-ideas.com/images/Outdoor_cabinets_adjustable_legs.jpg

Searching some adjustable leg series as the references for study. A stronger and stable adjustable that able support the portable toilet. According the observe , some of the surface floor unbalance especially at the hillside.