Bureau Of Indian Standards is in the process of finalising a Standard titled “Code of practice for laying, inspection and maintenance of Fragile Roofs” through Docket No. DOC CED45 (3762). This Standard endorses above Configuration of components in a full Set of roof Ladder, which is termed as “Minimum Adequate Quantity” to carry out various jobs on the fragile Roofs with minimum shifting.

Specifications : :

The Side members should be made from HE-9 grade tempered Aluminium Alloy No.    6063.

Steps are to be reinforced by Aluminium strips made from HE-20 grade alloy No.    6351.

Steps should have inserts of Aluminium, giving clearance of 0.1 mm over the Dia of    Rivets.

Brackets are made from Glass filled Nylon - Grade Virgin Nylon-66.

Rivets are hallow rivets, having good shear strength.

Saddles are made from Virgin `Low Density Polypropylene’.

Anti-skid padding should be made from Natural Rubber.

Elevating Pads are made from Virgin Polypropylene.

Eccentric Clamps should be made from good quality LM6 grade Aluminium / Virgin     Nylon- 66.

A segment of 3 Mtrs. should take Load of 500 Kgs. in operating conditions.

Full Ladder should NOT have steps less than 13 numbers, while Half Ladder 1.8 long    should not have steps less than 8 numbers not have steps less than 8 numbers.