Assessment module 3

Engineering Assessment

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Engineering Form

Complete the roof material, drainage arrangement, and catchment area assessment in this single engineering form.

Household ID Selected Household Engineer Name

Question 1. Housing structure

Enter the width and depth. The area will be calculated automatically and used in the final storage calculation.

Width (in ft) Depth (in ft) Area (W x D)

Question 2. Construction material used for roof

RCC slab(Lanter) Prefabricated RCC slabs, T-iron and girder beams Clay bricks/tiles, T-iron and grinder beams Any other

Question 3. Arrangement of Rainwater Drainage

Rainwater from rooftop, balconies, terraces and shades is drained separately and NOT drained into sewerage system. Rainwater is NOT drained separately and is drained into sewerage system Other arrangement Rainwater is drained directly into street Rainwater is drained into courtyard or other part of house

Question 4. Assessment of Catchment Area

Fill at least one row. Area is calculated automatically from Length x Width.

Type of area	Width (in ft)	Length (in ft)	Area (L x W)	Number of drainage points and diameter of each point
Mumty's Rooftop				P1: P2: P3: P4:
Rooftop 1				P1: P2: P3: P4:
Rooftop 2				P1: P2: P3: P4:
Balcony 1				P1: P2: P3: P4:
Balcony 2				P1: P2: P3: P4:
Balcony 3				P1: P2: P3: P4:
Terrace 1				P1: P2: P3: P4:
Terrace 2				P1: P2: P3: P4:
Terrace 3				P1: P2: P3: P4:
Shade 1				P1: P2: P3: P4:
Shade 2				P1: P2: P3: P4:
Shade 3				P1: P2: P3: P4:

Total catchment area

Question 4. Underground Tank

This question is enabled only if Underground tank was selected in SEAF facilities.

Number of underground tanks Material used in underground tanks Total storage capacity of underground tanks

Tank	Depth	Width	Length	Capacity (D x W x L)
Enter the number of underground tanks to generate rows.

Question 5. Overhead Tank

This question is enabled only if Overhead tank was selected in SEAF facilities.

Number of overhead tanks Material used in overhead tanks Total storage capacity of overhead tanks

Tank	Depth	Width	Length	Capacity (D x W x L)
Enter the number of overhead tanks to generate rows.

Question 6. Proposed storage capacity of tanks

Select the proposed storage capacity for the RWH Unit tanks.

Proposed storage capacity of tanks

Question 7. The house is not appropriate for RWHU

If such is the case, please briefly enlist the reasons for rejection.

Reasons for rejection

Question 8. Calculating household's water need and determining required storage capacity

Calculation of rainwater that can potentially be harvested through available catchment area/s.

Description	Calculations
Total available area (in square feet) that is exposed to rainwater and can act as catchment area (A) Calculated from Question 1 housing structure dimensions.	A = Square feet
Convert area (A) into three dimensional space assuming 01" (0.083 ft.) of rain has fallen (S)	S = 0.083 x A = Space in cubic feet
1 cubic feet of space can hold	28.32 liters of water
Run-off factor	0.9
Quantity of rainwater that can be harvested (Q)	Q = Liters

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