A. CONVENTIONAL BILLBOARDS

These range from the 4-sheet Billboard to the Bulletin size Billboard which conform with international standards

(i) 4-SHEET BILLBOARD

The face panel of the 4-sheet Billboard measures 1.016m (3'4") in width and 1.524m (5.0") in height. Some flexibility is tolerated in the shape and appearance of the 4-sheet billboard even though the face panel size remains constant as indicated. It often has an aluminium frame. The panel size of the 4-sheet board is the basic unit of all conventional Billboards as the others usually has sizes which are multiples of the 4-sheet size.

(ii) 8-BILLBOARD

The 8-sheet billboard has face panel measuring 1.016m (3'4") * 3.048m (10'0"). Either of the two dimensions can be used as the height or the width. Like the 4-sheet billboard, it can appear in various shapes and sizes while maintaining the same face panel size. It also has an aluminium frame.

(iii) 16-SHEET BILLBOARD

The face panel of the 16 sheet Billboard measures 3.048m (10'0") in width and 2.032m (6.8") in height. The 16-sheet board made of steel proposed in this report has a total height of 4.53m with a minimum ground clearance of 2.2m. The ground level from which the clearance is measured is defined for the purposes of this standardization report as the level of the nearest existing carriageway.

(iv) 40-SHEET BILLBOARD

Having a face panel measuring 7.62m (25'0") in width and 2.032m (6'8") in height, the 40-sheet billboard constructed from steel proposed herein has a total height of 4.53 and a minimum ground clearance of 2.2m. The ground level from which the clearance is measured is as defined above for the 16-sheet billboard.

(v) BULLETIN BOARD

The Bulletin Board has a face panel measuring 2.896m (9'6") in height and 10.973 (36'0") in width. The Bulletin Board fabricated from steel which is proposed herein has a total height measuring 5.45m and 2.2m.

(vi) PUBLIC INFORMATION PANELS

Face width 3.048m
Face height 1.016m
Maximum height of the panel should correspond with the height of the bus shelter.

B. INNOVATIONS

(i) ROOFTOP BILLDOARD

The face panel of this type of Billboard measures 14.63m (48'0") in width and 4.877m (16'5") to allow for a constant spacing of 1.00m between adjacent frame bracing measured centre-to-centre along the frame height. The total height of the frame is 7.15m measured from the roof floor and including the concrete pedestal base measuring 400 x 4000m in plan and 150mm in height.

(ii) TOWER BILLBOARD

The Tower Billboard has a minimum total height of 10m. while the face panel measures 4.877m (16'0") in height and 14.63 (48'0) in width. The total height of the rationale for the Tower Billboard in addition to aesthetic considerations is to provide the visual effect of the Roof top Billboard.

(iii) INFLATABLES

These are vinyl-like materials inflated by continuous running external fans to assume any shape and size. They are usually inflated with ordinary air and begin to deflate once the fan motor is disconnected or switched off. They are held in place by ropes called Tethers attached to their sides which at the other end can be attached to any heavy stationary object such as concrete blocks, pillars, door-posts, poles etc. When inflated, they are liable to being punctured or ripped open by sharp objects such as nails, roofing sheets etc.

(iv) COMPUTER PRINTED FLEXIBLE FACES

These are vinyl-like materials computer printed with great precision to achieve very high picture clarity and resolution. The flex can be frontlit or backlit. Frontlit flex are sticked around wood or flat steel sheet face panel of conventional billboards and held in place by a system of tensioned ratchet straps. The lighting system is placed in front of the panels at the base. Backlit Computer printed flex are encased in aluminium frames which have concealed lighting in them. Their effect is very dramatic. Computer printed flexible faces are wholesome and environmental friendly additions to Outdoor Advertising Practice. The largest size of the frontlit variety measures 48'(14.63m) in width by 16' 94.88m) height. The most common size measures 36 (10.97m) in width by 12' (3.66m) in height. backlit flexible can be 8 sheet or 4 sheet or even smaller in size.

(v) DYNAMIC VISUAL DISPLAY UNIT

These are wall mounted or free standing Visual Display Units often encased in an aluminium frames in which the picture is constantly changing. This innovative form of outdoor advertising potent is complex and requires a lot of maintenance.